mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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loongarch-next
3847 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Shakeel Butt
|
9023691d75 |
mm: mmap_lock: optimize mmap_lock tracepoints
We are starting to deploy mmap_lock tracepoint monitoring across our fleet and the early results showed that these tracepoints are consuming significant amount of CPUs in kernfs_path_from_node when enabled. It seems like the kernel is trying to resolve the cgroup path in the fast path of the locking code path when the tracepoints are enabled. In addition for some application their metrics are regressing when monitoring is enabled. The cgroup path resolution can be slow and should not be done in the fast path. Most userspace tools, like bpftrace, provides functionality to get the cgroup path from cgroup id, so let's just trace the cgroup id and the users can use better tools to get the path in the slow path. Link: https://lkml.kernel.org/r/20241125171617.113892-1-shakeel.butt@linux.dev Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev> Reviewed-by: Yosry Ahmed <yosryahmed@google.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Roman Gushchin <roman.gushchin@linux.dev> Reviewed-by: Axel Rasmussen <axelrasmussen@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Muchun Song <muchun.song@linux.dev> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Naohiro Aota
|
453a73c306 |
btrfs: zoned: reclaim unused zone by zone resetting
On the zoned mode, once used and freed region is still not reusable after the freeing. The underlying zone needs to be reset before reusing. Btrfs resets a zone when it removes a block group, and then new block group is allocated on the zones to reuse the zones. But, it is sometime too late to catch up with a write side. This commit introduces a new space-info reclaim method ZONE_RESET. That will pick a block group from the unused list and reset its zone to reuse the zone_unusable space. It is faster than removing the block group and re-creating a new block group on the same zones. For the first implementation, the ZONE_RESET is only applied to a block group whose region is fully zone_unusable. Reclaiming partial zone_unusable block group could be implemented later. Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com> Signed-off-by: David Sterba <dsterba@suse.com> |
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Muchun Song
|
9ab96b524d |
hugetlb: fix NULL pointer dereference in trace_hugetlbfs_alloc_inode
hugetlb_file_setup() will pass a NULL @dir to hugetlbfs_get_inode(), so we
will access a NULL pointer for @dir. Fix it and set __entry->dr to 0 if
@dir is NULL. Because ->i_ino cannot be 0 (see get_next_ino()), there is
no confusing if user sees a 0 inode number.
Link: https://lkml.kernel.org/r/20250106033118.4640-1-songmuchun@bytedance.com
Fixes:
|
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David Howells
|
30bca65bbb
|
afs: Make /afs/@cell and /afs/.@cell symlinks
Make /afs/@cell a symlink in the /afs dynamic root to match what other AFS clients do rather than doing a substitution in the dentry name. This has the bonus of being tab-expandable also. Further, provide a /afs/.@cell symlink to point to the dotted cell share. Signed-off-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20250107183454.608451-4-dhowells@redhat.com cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
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Gabriele Monaco
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bc3d482dcc |
rv: Simplify manual steps in monitor creation
While creating a new monitor in RV, besides generating code from dot2k, there are a few manual steps which can be tedious and error prone, like adding the tracepoints, makefile lines and kconfig. This patch restructures the existing monitors to keep some files in the monitor's folder itself, which can be automatically generated by future versions of dot2k. Monitors have now their own Kconfig and tracepoint snippets. For simplicity, the main tracepoint definition, is moved to the RV directory, it defines only the tracepoint classes and includes the monitor-specific tracepoints, which reside in the monitor directory. Tracepoints and Kconfig no longer need to be copied and adapted from existing ones but only need to be included in the main files. The Makefile remains untouched since there's little advantage in having a separated Makefile for each monitor with a single line and including it in the main RV Makefile. Cc: Juri Lelli <juri.lelli@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: John Kacur <jkacur@redhat.com> Link: https://lore.kernel.org/20241227144752.362911-6-gmonaco@redhat.com Signed-off-by: Gabriele Monaco <gmonaco@redhat.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
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Marco Elver
|
e3f6a42272 |
tracing: Remove pid in task_rename tracing output
Remove pid in task_rename tracepoint output, since that tracepoint only deals with the current task, and is printed by default. This also saves some space in the entry and avoids wasted padding. Link: https://lkml.kernel.org/r/20241105120247.596a0dc9@gandalf.local.home Suggested-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Marco Elver <elver@google.com> Link: https://lore.kernel.org/r/20241108113455.2924361-2-elver@google.com Signed-off-by: Kees Cook <kees@kernel.org> |
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Marco Elver
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c38904ebb7 |
tracing: Add task_prctl_unknown tracepoint
prctl() is a complex syscall which multiplexes its functionality based
on a large set of PR_* options. Currently we count 64 such options. The
return value of unknown options is -EINVAL, and doesn't distinguish from
known options that were passed invalid args that also return -EINVAL.
To understand if programs are attempting to use prctl() options not yet
available on the running kernel, provide the task_prctl_unknown
tracepoint.
Note, this tracepoint is in an unlikely cold path, and would therefore
be suitable for continuous monitoring (e.g. via perf_event_open).
While the above is likely the simplest usecase, additionally this
tracepoint can help unlock some testing scenarios (where probing
sys_enter or sys_exit causes undesirable performance overheads):
a. unprivileged triggering of a test module: test modules may register a
probe to be called back on task_prctl_unknown, and pick a very large
unknown prctl() option upon which they perform a test function for an
unprivileged user;
b. unprivileged triggering of an eBPF program function: similar
as idea (a).
Example trace_pipe output:
test-380 [001] ..... 78.142904: task_prctl_unknown: option=1234 arg2=101 arg3=102 arg4=103 arg5=104
Signed-off-by: Marco Elver <elver@google.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
Link: https://lore.kernel.org/r/20241108113455.2924361-1-elver@google.com
Signed-off-by: Kees Cook <kees@kernel.org>
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David Howells
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3c49e529e1
|
afs: Add a tracepoint for afs_read_receive()
Add a tracepoint for afs_read_receive() to allow potential missed wakeups to be debugged. Signed-off-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20241216204124.3752367-32-dhowells@redhat.com cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
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David Howells
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836bb70bde
|
afs: Make afs_mkdir() locally initialise a new directory's content
Initialise a new directory's content when it is created by mkdir locally rather than downloading the content from the server as we can predict what it's going to look like. Signed-off-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20241216204124.3752367-29-dhowells@redhat.com cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
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David Howells
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e2d46f2ec3
|
netfs: Change the read result collector to only use one work item
Change the way netfslib collects read results to do all the collection for
a particular read request using a single work item that walks along the
subrequest queue as subrequests make progress or complete, unlocking folios
progressively rather than doing the unlock in parallel as parallel requests
come in.
The code is remodelled to be more like the write-side code, though only
using a single stream. This makes it more directly comparable and thus
easier to duplicate fixes between the two sides.
This has a number of advantages:
(1) It's simpler. There doesn't need to be a complex donation mechanism
to handle mismatches between the size and alignment of subrequests and
folios. The collector unlocks folios as the subrequests covering each
complete.
(2) It should cause less scheduler overhead as there's a single work item
in play unlocking pages in parallel when a read gets split up into a
lot of subrequests instead of one per subrequest.
Whilst the parallellism is nice in theory, in practice, the vast
majority of loads are sequential reads of the whole file, so
committing a bunch of threads to unlocking folios out of order doesn't
help in those cases.
(3) It should make it easier to implement content decryption. A folio
cannot be decrypted until all the requests that contribute to it have
completed - and, again, most loads are sequential and so, most of the
time, we want to begin decryption sequentially (though it's great if
the decryption can happen in parallel).
There is a disadvantage in that we're losing the ability to decrypt and
unlock things on an as-things-arrive basis which may affect some
applications.
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/20241216204124.3752367-28-dhowells@redhat.com
cc: Jeff Layton <jlayton@kernel.org>
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
|
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David Howells
|
9750be93b2
|
afs: Fix cleanup of immediately failed async calls
If we manage to begin an async call, but fail to transmit any data on it
due to a signal, we then abort it which causes a race between the
notification of call completion from rxrpc and our attempt to cancel the
notification. The notification will be necessary, however, for async
FetchData to terminate the netfs subrequest.
However, since we get a notification from rxrpc upon completion of a call
(aborted or otherwise), we can just leave it to that.
This leads to calls not getting cleaned up, but appearing in
/proc/net/rxrpc/calls as being aborted with code 6.
Fix this by making the "error_do_abort:" case of afs_make_call() abort the
call and then abandon it to the notification handler.
Fixes:
|
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David Howells
|
eae9e78951
|
afs: Use netfslib for symlinks, allowing them to be cached
Use netfslib to read symlinks, thereby allowing them to be cached by fscache and cachefiles. Signed-off-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20241216204124.3752367-23-dhowells@redhat.com cc: Marc Dionne <marc.dionne@auristor.com> cc: Jeff Layton <jlayton@kernel.org> cc: linux-afs@lists.infradead.org cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
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David Howells
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6dd8093661
|
afs: Use netfslib for directories
In the AFS ecosystem, directories are just a special type of file that is
downloaded and parsed locally. Download is done by the same mechanism as
ordinary files and the data can be cached. There is one important semantic
restriction on directories over files: the client must download the entire
directory in one go because, for example, the server could fabricate the
contents of the blob on the fly with each download and give a different
image each time.
So that we can cache the directory download, switch AFS directory support
over to using the netfslib single-object API, thereby allowing directory
content to be stored in the local cache.
To make this work, the following changes are made:
(1) A directory's contents are now stored in a folio_queue chain attached
to the afs_vnode (inode) struct rather than its associated pagecache,
though multipage folios are still used to hold the data. The folio
queue is discarded when the directory inode is evicted.
This also helps with the phasing out of ITER_XARRAY.
(2) Various directory operations are made to use and unuse the cache
cookie.
(3) The content checking, content dumping and content iteration are now
performed with a standard iov_iter iterator over the contents of the
folio queue.
(4) Iteration and modification must be done with the vnode's validate_lock
held. In conjunction with (1), this means that the iteration can be
done without the need to lock pages or take extra refs on them, unlike
when accessing ->i_pages.
(5) Convert to using netfs_read_single() to read data.
(6) Provide a ->writepages() to call netfs_writeback_single() to save the
data to the cache according to the VM's scheduling whilst holding the
validate_lock read-locked as (4).
(7) Change local directory image editing functions:
(a) Provide a function to get a specific block by number from the
folio_queue as we can no longer use the i_pages xarray to locate
folios by index. This uses a cursor to remember the current
position as we need to iterate through the directory contents.
The block is kmapped before being returned.
(b) Make the function in (a) extend the directory by an extra folio if
we run out of space.
(c) Raise the check of the block free space counter, for those blocks
that have one, higher in the function to eliminate a call to get a
block.
(d) Remove the page unlocking and putting done during the editing
loops. This is no longer necessary as the folio_queue holds the
references and the pages are no longer in the pagecache.
(e) Mark the inode dirty and pin the cache usage till writeback at the
end of a successful edit.
(8) Don't set the large_folios flag on the inode as we do the allocation
ourselves rather than the VM doing it automatically.
(9) Mark the inode as being a single object that isn't uploaded to the
server.
(10) Enable caching on directories.
(11) Only set the upload key for writeback for regular files.
Notes:
(*) We keep the ->release_folio(), ->invalidate_folio() and
->migrate_folio() ops as we set the mapping pointer on the folio.
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/20241216204124.3752367-22-dhowells@redhat.com
cc: Marc Dionne <marc.dionne@auristor.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-afs@lists.infradead.org
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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David Howells
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49866ce7ea
|
netfs: Add support for caching single monolithic objects such as AFS dirs
Add support for caching the content of a file that contains a single monolithic object that must be read/written with a single I/O operation, such as an AFS directory. Signed-off-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20241216204124.3752367-20-dhowells@redhat.com cc: Jeff Layton <jlayton@kernel.org> cc: Marc Dionne <marc.dionne@auristor.com> cc: netfs@lists.linux.dev cc: linux-afs@lists.infradead.org cc: linux-fsdevel@vger.kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
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David Howells
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e61bfaad8f
|
netfs: Add functions to build/clean a buffer in a folio_queue
Add two netfslib functions to build up or clean up a buffer in a folio_queue. The first, netfs_alloc_folioq_buffer() will add folios to a buffer, extending up at least to the given size. If it can, it will add multipage folios. The folios are optionally have the mapping set and will have the index set according to the distance from the front of the folio queue. The second function will free up a folio queue and put any folios in the queue that have the first mark set. The netfs_folio tracepoint is also altered to cope with folios that have a NULL mapping, and the folios being added/put will have trace lines emitted and will be accounted in the stats. Signed-off-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20241216204124.3752367-19-dhowells@redhat.com cc: Jeff Layton <jlayton@kernel.org> cc: Marc Dionne <marc.dionne@auristor.com> cc: netfs@lists.linux.dev cc: linux-afs@lists.infradead.org cc: linux-fsdevel@vger.kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
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David Howells
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9e705016eb
|
afs: Add more tracepoints to do with tracking validity
Add wrappers to set and clear the callback promise and to mark a directory
as invalidated, and add tracepoints to track these events:
(1) afs_cb_promise: Log when a callback promise is set on a vnode.
(2) afs_vnode_invalid: Log when the server's callback promise for a vnode
is no longer valid and we need to refetch the vnode metadata.
(3) afs_dir_invalid: Log when the contents of a directory are marked
invalid and requiring refetching from the server and the cache
invalidating.
and two tracepoints to record data version number management:
(4) afs_set_dv: Log when the DV is recorded on a vnode.
(5) afs_dv_mismatch: Log when the DV recorded on a vnode plus the expected
delta for the operation does not match the DV we got back from the
server.
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/20241216204124.3752367-18-dhowells@redhat.com
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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David Howells
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229105e5cf
|
cachefiles: Add auxiliary data trace
Add a display of the first 8 bytes of the downloaded auxiliary data and of the on-disk stored auxiliary data as these are used in coherency management. In the case of afs, this holds the data version number. Signed-off-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20241216204124.3752367-17-dhowells@redhat.com cc: Jeff Layton <jlayton@kernel.org> cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
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David Howells
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bcb33f79e1
|
cachefiles: Add some subrequest tracepoints
Add some tracepoints into the cachefiles write paths. Signed-off-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20241216204124.3752367-16-dhowells@redhat.com cc: netfs@lists.linux.dev Signed-off-by: Christian Brauner <brauner@kernel.org> |
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David Howells
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06fa229ceb
|
netfs: Abstract out a rolling folio buffer implementation
A rolling buffer is a series of folios held in a list of folio_queues. New folios and folio_queue structs may be inserted at the head simultaneously with spent ones being removed from the tail without the need for locking. The rolling buffer includes an iov_iter and it has to be careful managing this as the list of folio_queues is extended such that an oops doesn't incurred because the iterator was pointing to the end of a folio_queue segment that got appended to and then removed. We need to use the mechanism twice, once for read and once for write, and, in future patches, we will use a second rolling buffer to handle bounce buffering for content encryption. Signed-off-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20241216204124.3752367-6-dhowells@redhat.com cc: Jeff Layton <jlayton@kernel.org> cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
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David Howells
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aabcabf274
|
netfs: Add a tracepoint to log the lifespan of folio_queue structs
Add a tracepoint to log the lifespan of folio_queue structs. For tracing illustrative purposes, folio_queues are tagged with the debug ID of whatever they're related to (typically a netfs_io_request) and a debug ID of their own. Signed-off-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20241216204124.3752367-5-dhowells@redhat.com cc: Jeff Layton <jlayton@kernel.org> cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
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David Howells
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2a8a384621
|
cachefiles: Clean up some whitespace in trace header
Clean up some whitespace in the cachefiles trace header. Signed-off-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20241216204124.3752367-3-dhowells@redhat.com cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
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David Howells
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d3d3ec8656
|
netfs: Clean up some whitespace in trace header
Clean up some whitespace in the netfs trace header. Signed-off-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20241216204124.3752367-2-dhowells@redhat.com cc: Jeff Layton <jlayton@kernel.org> cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
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Ido Schimmel
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002bf68a3b |
tracing: ipv6: Add flow label to fib6_table_lookup tracepoint
The different parameters affecting the IPv6 route lookup are printed to
the trace buffer by the fib6_table_lookup tracepoint. Add the IPv6 flow
label for better observability as it can affect the route lookup both in
terms of multipath hash calculation and policy based routing (FIB
rules). Example:
# echo 1 > /sys/kernel/tracing/events/fib6/fib6_table_lookup/enable
# ip -6 route get ::1 flowlabel 0x12345 ipproto udp sport 12345 dport 54321 &> /dev/null
# cat /sys/kernel/tracing/trace_pipe
ip-358 [010] ..... 44.897484: fib6_table_lookup: table 255 oif 0 iif 1 proto 17 ::/12345 -> ::1/54321 flowlabel 0x12345 tos 0 scope 0 flags 0 ==> dev lo gw :: err 0
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Matthew Wilcox (Oracle)
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c910a64bc4 |
f2fs: Remove calls to folio_file_mapping()
All folios that f2fs sees belong to f2fs and not to the swapcache so it can dereference folio->mapping directly like all other filesystems do. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> |
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Matthew Wilcox (Oracle)
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87e2a15bc0 |
f2fs: Convert submit tracepoints to take a folio
Remove accesses to page->index and page->mapping as well as unnecessary calls to page_file_mapping(). Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> |
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Dave Airlie
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c7d6cb4c43 |
drm-misc-next for 6.14:
UAPI Changes:
Cross-subsystem Changes:
Core Changes:
- Remove driver date from drm_driver
Driver Changes:
- amdxdna: New driver!
- ivpu: Fix qemu crash when using passthrough
- nouveau: expose GSP-RM logging buffers via debugfs
- panfrost: Add MT8188 Mali-G57 MC3 support
- panthor: misc improvements,
- rockchip: Gamma LUT support
- tidss: Misc improvements
- virtio: convert to helpers, add prime support for scanout buffers
- v3d: Add DRM_IOCTL_V3D_PERFMON_SET_GLOBAL
- vc4: Add support for BCM2712
- vkms: Improvements all across the board
- panels:
- Introduce backlight quirks infrastructure
- New panels: KDB KD116N2130B12
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Merge tag 'drm-misc-next-2024-12-05' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next
[airlied: handle module ns conflict]
drm-misc-next for 6.14:
UAPI Changes:
Cross-subsystem Changes:
Core Changes:
- Remove driver date from drm_driver
Driver Changes:
- amdxdna: New driver!
- ivpu: Fix qemu crash when using passthrough
- nouveau: expose GSP-RM logging buffers via debugfs
- panfrost: Add MT8188 Mali-G57 MC3 support
- panthor: misc improvements,
- rockchip: Gamma LUT support
- tidss: Misc improvements
- virtio: convert to helpers, add prime support for scanout buffers
- v3d: Add DRM_IOCTL_V3D_PERFMON_SET_GLOBAL
- vc4: Add support for BCM2712
- vkms: Improvements all across the board
- panels:
- Introduce backlight quirks infrastructure
- New panels: KDB KD116N2130B12
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <mripard@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241205-agile-straight-pegasus-aca7f4@houat
|
||
|
Jakub Kicinski
|
5098462fba |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.13-rc3). No conflicts or adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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David Howells
|
7c48266593 |
rxrpc: Implement RACK/TLP to deal with transmission stalls [RFC8985]
When an rxrpc call is in its transmission phase and is sending a lot of packets, stalls occasionally occur that cause severe performance degradation (eg. increasing the transmission time for a 256MiB payload from 0.7s to 2.5s over a 10G link). rxrpc already implements TCP-style congestion control [RFC5681] and this helps mitigate the effects, but occasionally we're missing a time event that deals with a missing ACK, leading to a stall until the RTO expires. Fix this by implementing RACK/TLP in rxrpc. Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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David Howells
|
b40ef2b85a |
rxrpc: Manage RTT per-call rather than per-peer
Manage the determination of RTT on a per-call (ie. per-RPC op) basis rather than on a per-peer basis, averaging across all calls going to that peer. The problem is that the RTT measurements from the initial packets on a call may be off because the server may do some setting up (such as getting a lock on a file) before accepting the rest of the data in the RPC and, further, the RTT may be affected by server-side file operations, for instance if a large amount of data is being written or read. Note: When handling the FS.StoreData-type RPCs, for example, the server uses the userStatus field in the header of ACK packets as supplementary flow control to aid in managing this. AF_RXRPC does not yet support this, but it should be added. Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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|
David Howells
|
b509934094 |
rxrpc: Add a reason indicator to the tx_ack tracepoint
Record the reason for the transmission of an ACK in the rxrpc_tx_ack tracepoint, and not just in the rxrpc_propose_ack tracepoint. Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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|
David Howells
|
372d12d191 |
rxrpc: Add a reason indicator to the tx_data tracepoint
Add an indicator to the rxrpc_tx_data tracepoint to indicate what triggered the transmission of a particular packet. At this point, it's only normal transmission and retransmission, plus the tracepoint is also used to record loss injection, but in a future patch, TLP-induced (re-)transmission will also be a thing. Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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|
David Howells
|
08d55d7cf3 |
rxrpc: Don't allocate a txbuf for an ACK transmission
Don't allocate an rxrpc_txbuf struct for an ACK transmission. There's now no need as the memory to hold the ACK content is allocated with a page frag allocator. The allocation and freeing of a txbuf is just unnecessary overhead. Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
David Howells
|
a3d7f46d98 |
rxrpc: Display userStatus in rxrpc_rx_ack trace
Display the userStatus field from the Rx packet header in the rxrpc_rx_ack trace line. This is used for flow control purposes by FS.StoreData-type kafs RPC calls. Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
David Howells
|
93dfca65a1 |
rxrpc: Adjust the rxrpc_rtt_rx tracepoint
Adjust the rxrpc_rtt_rx tracepoint in the following ways:
(1) Display the collected RTT sample in the rxrpc_rtt_rx trace.
(2) Move the division of srtt by 8 to the TP_printk() rather doing it
before invoking the trace point.
(3) Display the min_rtt value.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
||
|
David Howells
|
dcdff0d8e3 |
rxrpc: Store the DATA serial in the txqueue and use this in RTT calc
Store the serial number set on a DATA packet at the point of transmission in the rxrpc_txqueue struct and when an ACK is received, match the reference number in the ACK by trawling the txqueue rather than sharing an RTT table with ACK RTT. This can be done as part of Tx queue rotation. This means we have a lot more RTT samples available and is faster to search with all the serial numbers packed together into a few cachelines rather than being hung off different txbufs. Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Link: https://patch.msgid.link/20241204074710.990092-25-dhowells@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
David Howells
|
9b052c6b92 |
rxrpc: Use the new rxrpc_tx_queue struct to more efficiently process ACKs
With the change in the structure of the transmission buffer to store buffers in bunches of 32 or 64 (BITS_PER_LONG) we can place sets of per-buffer flags into the rxrpc_tx_queue struct rather than storing them in rxrpc_tx_buf, thereby vastly increasing efficiency when assessing the SACK table in an ACK packet. Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Link: https://patch.msgid.link/20241204074710.990092-24-dhowells@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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|
David Howells
|
f7dd0dc965 |
rxrpc: Adjust names and types of congestion-related fields
Adjust some of the names of fields and constants to make them look a bit more like the TCP congestion symbol names, such as flight_size -> in_flight and congest_mode to ca_state. Move the persistent congestion-related fields from the rxrpc_ack_summary struct into the rxrpc_call struct rather than copying them out and back in again. The rxrpc_congest tracepoint can fetch them from the call struct. Rename the counters for soft acks and nacks to have an 's' on the front to reflect the softness, e.g. nr_acks -> nr_sacks. Make fields counting numbers of packets or numbers of acks u16 rather than u8 to allow for windows of up to 8192 DATA packets in flight in future. Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Link: https://patch.msgid.link/20241204074710.990092-23-dhowells@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
David Howells
|
203457e11b |
rxrpc: Replace call->acks_first_seq with tracking of the hard ACK point
Replace the call->acks_first_seq variable (which holds ack.firstPacket from the latest ACK packet and indicates the sequence number of the first ack slot in the SACK table) with call->acks_hard_ack which will hold the highest sequence hard ACK'd. This is 1 less than call->acks_first_seq, but it fits in the same schema as the other tracking variables which hold the sequence of a packet, not one past it. This will fix the rxrpc_congest tracepoint's calculation of SACK window size which shows one fewer than it should - and will occasionally go to -1. Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Link: https://patch.msgid.link/20241204074710.990092-21-dhowells@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
David Howells
|
692c4caa07 |
rxrpc: call->acks_hard_ack is now the same call->tx_bottom, so remove it
Now that packets are removed from the Tx queue in the rotation function rather than being cleaned up later, call->acks_hard_ack now advances in step with call->tx_bottom, so remove it. Some of the places call->acks_hard_ack is used in the rxrpc tracepoints are replaced by call->acks_first_seq instead as that's the peer's reported idea of the hard-ACK point. Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Link: https://patch.msgid.link/20241204074710.990092-20-dhowells@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
David Howells
|
b341a0263b |
rxrpc: Implement progressive transmission queue struct
We need to scan the buffers in the transmission queue occasionally when processing ACKs, but the transmission queue is currently a linked list of transmission buffers which, when we eventually expand the Tx window to 8192 packets will be very slow to walk. Instead, pull the fields we need to examine a lot (last sent time, retransmitted flag) into a new struct rxrpc_txqueue and make each one hold an array of 32 or 64 packets. The transmission queue is then a list of these structs, each pointing to a contiguous set of packets. Scanning is then a lot faster as the flags and timestamps are concentrated in the CPU dcache. The transmission timestamps are stored as a number of microseconds from a base ktime to reduce memory requirements. This should be fine provided we manage to transmit an entire buffer within an hour. This will make implementing RACK-TLP [RFC8985] easier as it will be less costly to scan the transmission buffers. Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Link: https://patch.msgid.link/20241204074710.990092-19-dhowells@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
David Howells
|
9e3cccd176 |
rxrpc: Fix CPU time starvation in I/O thread
Starvation can happen in the rxrpc I/O thread because it goes back to the
top of the I/O loop after it does any one thing without trying to give any
other connection or call CPU time. Also, because it processes one call
packet at a time, it tries to do the retransmission loop after each ACK
without checking to see if there are other ACKs already in the queue that
can update the SACK state.
Fix this by:
(1) Add a received-packet queue on each call.
(2) Distribute packets from the master Rx queue to the individual call,
conn and error queues and 'poking' calls to add them to the attend
queue first thing in the I/O thread.
(3) Go through all the attention-seeking connections and calls before
going back to the top of the I/O thread. Each queue is extracted as a
whole and then gone through so that new additions to insert themselves
into the queue.
(4) Make the call event handler go through all the packets currently on
the call's rx_queue before transmitting and retransmitting DATA
packets.
(5) Drop the skb argument from the call event handler as this is now
replaced with the rx_queue. Instead, keep track of whether we
received a packet or an ACK for the tests that used to rely on that.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Link: https://patch.msgid.link/20241204074710.990092-14-dhowells@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
||
|
David Howells
|
149d002bee |
rxrpc: Add a tracepoint to show variables pertinent to jumbo packet size
Add a tracepoint to be called right before packets are transmitted for the first time that shows variable values that are pertinent to how many subpackets will be added to a jumbo DATA packet. Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Link: https://patch.msgid.link/20241204074710.990092-13-dhowells@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
David Howells
|
eeaedc5449 |
rxrpc: Implement path-MTU probing using padded PING ACKs (RFC8899)
Implement path-MTU probing (along the lines of RFC8899) by padding some of the PING ACKs we send. PING ACKs get their own individual responses quite apart from the acking of data (though, as ACKs, they fulfil that role also). The probing concentrates on packet sizes that correspond how many subpackets can be stuffed inside a jumbo packet as jumbo DATA packets are just aggregations of individual DATA packets and can be split easily for retransmission purposes. If we want to perform probing, we advertise this by setting the maximum number of jumbo subpackets to 0 in the ack trailer when we send an ACK and see if the peer is also advertising the service. This is interpreted by non-supporting Rx stacks as an indication that jumbo packets aren't supported. The MTU sizes advertised in the ACK trailer AF_RXRPC transmits are pegged at a maximum of 1444 unless pmtud is supported by both sides. Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Link: https://patch.msgid.link/20241204074710.990092-10-dhowells@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
David Howells
|
8b5823ea43 |
rxrpc: Request an ACK on impending Tx stall
Set the REQUEST-ACK flag on the DATA packet we're about to send if we're about to stall transmission because the app layer isn't keeping up supplying us with data to transmit. Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Link: https://patch.msgid.link/20241204074710.990092-8-dhowells@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
David Howells
|
efa95c3235 |
rxrpc: Clean up Tx header flags generation handling
Clean up the generation of the header flags when building packet headers
for transmission:
(1) Assemble the flags in a local variable rather than in the txb->flags.
(2) Do the flags masking and JUMBO-PACKET setting in one bit of code for
both the main header and the jumbo headers.
(3) Generate the REQUEST-ACK flag afresh each time. There's a possibility
we might want to do jumbo retransmission packets in future.
(4) Pass the local flags variable to the rxrpc_tx_data tracepoint rather
than the combination of the txb flags and the wire header flags (the
latter belong only to the first subpacket).
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Link: https://patch.msgid.link/20241204074710.990092-5-dhowells@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
||
|
David Howells
|
0e56ebde24 |
rxrpc: Fix handling of received connection abort
Fix the handling of a connection abort that we've received. Though the
abort is at the connection level, it needs propagating to the calls on that
connection. Whilst the propagation bit is performed, the calls aren't then
woken up to go and process their termination, and as no further input is
forthcoming, they just hang.
Also add some tracing for the logging of connection aborts.
Fixes:
|
||
|
Akinobu Mita
|
6535b8669c |
mm/damon: fix order of arguments in damos_before_apply tracepoint
Since the order of the scheme_idx and target_idx arguments in TP_ARGS is
reversed, they are stored in the trace record in reverse.
Link: https://lkml.kernel.org/r/20241115182023.43118-1-sj@kernel.org
Link: https://patch.msgid.link/20241112154828.40307-1-akinobu.mita@gmail.com
Fixes:
|
||
|
Jordan Rome
|
d48da4d5ed
|
security: add trace event for cap_capable
In cases where we want a stable way to observe/trace cap_capable (e.g. protection from inlining and API updates) add a tracepoint that passes: - The credentials used - The user namespace of the resource being accessed - The user namespace in which the credential provides the capability to access the targeted resource - The capability to check for - The return value of the check Signed-off-by: Jordan Rome <linux@jordanrome.com> Acked-by: Andrii Nakryiko <andrii@kernel.org> Reviewed-by: Paul Moore <paul@paul-moore.com> Reviewed-by: Serge Hallyn <serge@hallyn.com> Link: https://lore.kernel.org/r/20241204155911.1817092-1-linux@jordanrome.com Signed-off-by: Serge Hallyn <sergeh@kernel.org> |
||
|
Maxime Ripard
|
3aba2eba84
|
Merge drm/drm-next into drm-misc-next
Kickstart 6.14 cycle. Signed-off-by: Maxime Ripard <mripard@kernel.org> |
||
|
Linus Torvalds
|
baf67f6aa9 |
NFS client updates for Linux 6.13
Highlights include:
Bugfixes:
- NFSv4.0: Fix a use-after-free problem in open()
- nfs/localio: fix for a memory corruption in nfs_local_read_done
- Revert "nfs: don't reuse partially completed requests in nfs_lock_and_join_requests"
- nfsv4: ignore SB_RDONLY when mounting nfs
- sunrpc: clear XPRT_SOCK_UPD_TIMEOUT when reseting the transport
- SUNRPC: timeout and cancel TLS handshake with -ETIMEDOUT
- sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket
- pNFS/blocklayout: Fix device registration issues
- SUNRPC: Fix a hang in TLS sock_close if sk_write_pending
Features and cleanups:
- localio cleanups from Mike Snitzer
- Clean up refcounting on the nfs version modules
- __counted_by() annotations
- nfs: make processes that are waiting for an I/O lock killable
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Merge tag 'nfs-for-6.13-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"Bugfixes:
- nfs/localio: fix for a memory corruption in nfs_local_read_done
- Revert "nfs: don't reuse partially completed requests in
nfs_lock_and_join_requests"
- nfsv4:
- ignore SB_RDONLY when mounting nfs
- Fix a use-after-free problem in open()
- sunrpc:
- clear XPRT_SOCK_UPD_TIMEOUT when reseting the transport
- timeout and cancel TLS handshake with -ETIMEDOUT
- fix one UAF issue caused by sunrpc kernel tcp socket
- Fix a hang in TLS sock_close if sk_write_pending
- pNFS/blocklayout: Fix device registration issues
Features and cleanups:
- localio cleanups from Mike Snitzer
- Clean up refcounting on the nfs version modules
- __counted_by() annotations
- nfs: make processes that are waiting for an I/O lock killable"
* tag 'nfs-for-6.13-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (24 commits)
fs/nfs/io: make nfs_start_io_*() killable
nfs/blocklayout: Limit repeat device registration on failure
nfs/blocklayout: Don't attempt unregister for invalid block device
sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket
SUNRPC: timeout and cancel TLS handshake with -ETIMEDOUT
sunrpc: clear XPRT_SOCK_UPD_TIMEOUT when reset transport
nfs: ignore SB_RDONLY when mounting nfs
Revert "nfs: don't reuse partially completed requests in nfs_lock_and_join_requests"
Revert "fs: nfs: fix missing refcnt by replacing folio_set_private by folio_attach_private"
nfs/localio: must clear res.replen in nfs_local_read_done
NFSv4.0: Fix a use-after-free problem in the asynchronous open()
NFSv4.0: Fix the wake up of the next waiter in nfs_release_seqid()
SUNRPC: Fix a hang in TLS sock_close if sk_write_pending
sunrpc: remove newlines from tracepoints
nfs: Annotate struct pnfs_commit_array with __counted_by()
nfs/localio: eliminate need for nfs_local_fsync_work forward declaration
nfs/localio: remove extra indirect nfs_to call to check {read,write}_iter
nfs/localio: eliminate unnecessary kref in nfs_local_fsync_ctx
nfs/localio: remove redundant suid/sgid handling
NFS: Implement get_nfs_version()
...
|
||
|
Linus Torvalds
|
7f4f3b14e8 |
Add Rust support for trace events:
- Allow Rust code to have trace events Trace events is a popular way to debug what is happening inside the kernel or just to find out what is happening. Rust code is being added to the Linux kernel but it currently does not support the tracing infrastructure. Add support of trace events inside Rust code. -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCZ0DjqhQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qrLlAPsF6t/c1nHSGTKDv9FJDJe4JHdP7e+U 7X0S8BmSTKFNAQD+K2TEd0bjVP7ug8dQZBT+fveiFr+ARYxAwJ3JnEFjUwg= =Ab+T -----END PGP SIGNATURE----- Merge tag 'trace-rust-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull rust trace event support from Steven Rostedt: "Allow Rust code to have trace events Trace events is a popular way to debug what is happening inside the kernel or just to find out what is happening. Rust code is being added to the Linux kernel but it currently does not support the tracing infrastructure. Add support of trace events inside Rust code" * tag 'trace-rust-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: rust: jump_label: skip formatting generated file jump_label: rust: pass a mut ptr to `static_key_count` samples: rust: fix `rust_print` build making it a combined module rust: add arch_static_branch jump_label: adjust inline asm to be consistent rust: samples: add tracepoint to Rust sample rust: add tracepoint support rust: add static_branch_unlikely for static_key_false |
||
|
Linus Torvalds
|
9f16d5e6f2 |
The biggest change here is eliminating the awful idea that KVM had, of
essentially guessing which pfns are refcounted pages. The reason to
do so was that KVM needs to map both non-refcounted pages (for example
BARs of VFIO devices) and VM_PFNMAP/VM_MIXMEDMAP VMAs that contain
refcounted pages. However, the result was security issues in the past,
and more recently the inability to map VM_IO and VM_PFNMAP memory
that _is_ backed by struct page but is not refcounted. In particular
this broke virtio-gpu blob resources (which directly map host graphics
buffers into the guest as "vram" for the virtio-gpu device) with the
amdgpu driver, because amdgpu allocates non-compound higher order pages
and the tail pages could not be mapped into KVM.
This requires adjusting all uses of struct page in the per-architecture
code, to always work on the pfn whenever possible. The large series that
did this, from David Stevens and Sean Christopherson, also cleaned up
substantially the set of functions that provided arch code with the
pfn for a host virtual addresses. The previous maze of twisty little
passages, all different, is replaced by five functions (__gfn_to_page,
__kvm_faultin_pfn, the non-__ versions of these two, and kvm_prefetch_pages)
saving almost 200 lines of code.
ARM:
* Support for stage-1 permission indirection (FEAT_S1PIE) and
permission overlays (FEAT_S1POE), including nested virt + the
emulated page table walker
* Introduce PSCI SYSTEM_OFF2 support to KVM + client driver. This call
was introduced in PSCIv1.3 as a mechanism to request hibernation,
similar to the S4 state in ACPI
* Explicitly trap + hide FEAT_MPAM (QoS controls) from KVM guests. As
part of it, introduce trivial initialization of the host's MPAM
context so KVM can use the corresponding traps
* PMU support under nested virtualization, honoring the guest
hypervisor's trap configuration and event filtering when running a
nested guest
* Fixes to vgic ITS serialization where stale device/interrupt table
entries are not zeroed when the mapping is invalidated by the VM
* Avoid emulated MMIO completion if userspace has requested synchronous
external abort injection
* Various fixes and cleanups affecting pKVM, vCPU initialization, and
selftests
LoongArch:
* Add iocsr and mmio bus simulation in kernel.
* Add in-kernel interrupt controller emulation.
* Add support for virtualization extensions to the eiointc irqchip.
PPC:
* Drop lingering and utterly obsolete references to PPC970 KVM, which was
removed 10 years ago.
* Fix incorrect documentation references to non-existing ioctls
RISC-V:
* Accelerate KVM RISC-V when running as a guest
* Perf support to collect KVM guest statistics from host side
s390:
* New selftests: more ucontrol selftests and CPU model sanity checks
* Support for the gen17 CPU model
* List registers supported by KVM_GET/SET_ONE_REG in the documentation
x86:
* Cleanup KVM's handling of Accessed and Dirty bits to dedup code, improve
documentation, harden against unexpected changes. Even if the hardware
A/D tracking is disabled, it is possible to use the hardware-defined A/D
bits to track if a PFN is Accessed and/or Dirty, and that removes a lot
of special cases.
* Elide TLB flushes when aging secondary PTEs, as has been done in x86's
primary MMU for over 10 years.
* Recover huge pages in-place in the TDP MMU when dirty page logging is
toggled off, instead of zapping them and waiting until the page is
re-accessed to create a huge mapping. This reduces vCPU jitter.
* Batch TLB flushes when dirty page logging is toggled off. This reduces
the time it takes to disable dirty logging by ~3x.
* Remove the shrinker that was (poorly) attempting to reclaim shadow page
tables in low-memory situations.
* Clean up and optimize KVM's handling of writes to MSR_IA32_APICBASE.
* Advertise CPUIDs for new instructions in Clearwater Forest
* Quirk KVM's misguided behavior of initialized certain feature MSRs to
their maximum supported feature set, which can result in KVM creating
invalid vCPU state. E.g. initializing PERF_CAPABILITIES to a non-zero
value results in the vCPU having invalid state if userspace hides PDCM
from the guest, which in turn can lead to save/restore failures.
* Fix KVM's handling of non-canonical checks for vCPUs that support LA57
to better follow the "architecture", in quotes because the actual
behavior is poorly documented. E.g. most MSR writes and descriptor
table loads ignore CR4.LA57 and operate purely on whether the CPU
supports LA57.
* Bypass the register cache when querying CPL from kvm_sched_out(), as
filling the cache from IRQ context is generally unsafe; harden the
cache accessors to try to prevent similar issues from occuring in the
future. The issue that triggered this change was already fixed in 6.12,
but was still kinda latent.
* Advertise AMD_IBPB_RET to userspace, and fix a related bug where KVM
over-advertises SPEC_CTRL when trying to support cross-vendor VMs.
* Minor cleanups
* Switch hugepage recovery thread to use vhost_task. These kthreads can
consume significant amounts of CPU time on behalf of a VM or in response
to how the VM behaves (for example how it accesses its memory); therefore
KVM tried to place the thread in the VM's cgroups and charge the CPU
time consumed by that work to the VM's container. However the kthreads
did not process SIGSTOP/SIGCONT, and therefore cgroups which had KVM
instances inside could not complete freezing. Fix this by replacing the
kthread with a PF_USER_WORKER thread, via the vhost_task abstraction.
Another 100+ lines removed, with generally better behavior too like
having these threads properly parented in the process tree.
* Revert a workaround for an old CPU erratum (Nehalem/Westmere) that didn't
really work; there was really nothing to work around anyway: the broken
patch was meant to fix nested virtualization, but the PERF_GLOBAL_CTRL
MSR is virtualized and therefore unaffected by the erratum.
* Fix 6.12 regression where CONFIG_KVM will be built as a module even
if asked to be builtin, as long as neither KVM_INTEL nor KVM_AMD is 'y'.
x86 selftests:
* x86 selftests can now use AVX.
Documentation:
* Use rST internal links
* Reorganize the introduction to the API document
Generic:
* Protect vcpu->pid accesses outside of vcpu->mutex with a rwlock instead
of RCU, so that running a vCPU on a different task doesn't encounter long
due to having to wait for all CPUs become quiescent. In general both reads
and writes are rare, but userspace that supports confidential computing is
introducing the use of "helper" vCPUs that may jump from one host processor
to another. Those will be very happy to trigger a synchronize_rcu(), and
the effect on performance is quite the disaster.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm updates from Paolo Bonzini:
"The biggest change here is eliminating the awful idea that KVM had of
essentially guessing which pfns are refcounted pages.
The reason to do so was that KVM needs to map both non-refcounted
pages (for example BARs of VFIO devices) and VM_PFNMAP/VM_MIXMEDMAP
VMAs that contain refcounted pages.
However, the result was security issues in the past, and more recently
the inability to map VM_IO and VM_PFNMAP memory that _is_ backed by
struct page but is not refcounted. In particular this broke virtio-gpu
blob resources (which directly map host graphics buffers into the
guest as "vram" for the virtio-gpu device) with the amdgpu driver,
because amdgpu allocates non-compound higher order pages and the tail
pages could not be mapped into KVM.
This requires adjusting all uses of struct page in the
per-architecture code, to always work on the pfn whenever possible.
The large series that did this, from David Stevens and Sean
Christopherson, also cleaned up substantially the set of functions
that provided arch code with the pfn for a host virtual addresses.
The previous maze of twisty little passages, all different, is
replaced by five functions (__gfn_to_page, __kvm_faultin_pfn, the
non-__ versions of these two, and kvm_prefetch_pages) saving almost
200 lines of code.
ARM:
- Support for stage-1 permission indirection (FEAT_S1PIE) and
permission overlays (FEAT_S1POE), including nested virt + the
emulated page table walker
- Introduce PSCI SYSTEM_OFF2 support to KVM + client driver. This
call was introduced in PSCIv1.3 as a mechanism to request
hibernation, similar to the S4 state in ACPI
- Explicitly trap + hide FEAT_MPAM (QoS controls) from KVM guests. As
part of it, introduce trivial initialization of the host's MPAM
context so KVM can use the corresponding traps
- PMU support under nested virtualization, honoring the guest
hypervisor's trap configuration and event filtering when running a
nested guest
- Fixes to vgic ITS serialization where stale device/interrupt table
entries are not zeroed when the mapping is invalidated by the VM
- Avoid emulated MMIO completion if userspace has requested
synchronous external abort injection
- Various fixes and cleanups affecting pKVM, vCPU initialization, and
selftests
LoongArch:
- Add iocsr and mmio bus simulation in kernel.
- Add in-kernel interrupt controller emulation.
- Add support for virtualization extensions to the eiointc irqchip.
PPC:
- Drop lingering and utterly obsolete references to PPC970 KVM, which
was removed 10 years ago.
- Fix incorrect documentation references to non-existing ioctls
RISC-V:
- Accelerate KVM RISC-V when running as a guest
- Perf support to collect KVM guest statistics from host side
s390:
- New selftests: more ucontrol selftests and CPU model sanity checks
- Support for the gen17 CPU model
- List registers supported by KVM_GET/SET_ONE_REG in the
documentation
x86:
- Cleanup KVM's handling of Accessed and Dirty bits to dedup code,
improve documentation, harden against unexpected changes.
Even if the hardware A/D tracking is disabled, it is possible to
use the hardware-defined A/D bits to track if a PFN is Accessed
and/or Dirty, and that removes a lot of special cases.
- Elide TLB flushes when aging secondary PTEs, as has been done in
x86's primary MMU for over 10 years.
- Recover huge pages in-place in the TDP MMU when dirty page logging
is toggled off, instead of zapping them and waiting until the page
is re-accessed to create a huge mapping. This reduces vCPU jitter.
- Batch TLB flushes when dirty page logging is toggled off. This
reduces the time it takes to disable dirty logging by ~3x.
- Remove the shrinker that was (poorly) attempting to reclaim shadow
page tables in low-memory situations.
- Clean up and optimize KVM's handling of writes to
MSR_IA32_APICBASE.
- Advertise CPUIDs for new instructions in Clearwater Forest
- Quirk KVM's misguided behavior of initialized certain feature MSRs
to their maximum supported feature set, which can result in KVM
creating invalid vCPU state. E.g. initializing PERF_CAPABILITIES to
a non-zero value results in the vCPU having invalid state if
userspace hides PDCM from the guest, which in turn can lead to
save/restore failures.
- Fix KVM's handling of non-canonical checks for vCPUs that support
LA57 to better follow the "architecture", in quotes because the
actual behavior is poorly documented. E.g. most MSR writes and
descriptor table loads ignore CR4.LA57 and operate purely on
whether the CPU supports LA57.
- Bypass the register cache when querying CPL from kvm_sched_out(),
as filling the cache from IRQ context is generally unsafe; harden
the cache accessors to try to prevent similar issues from occuring
in the future. The issue that triggered this change was already
fixed in 6.12, but was still kinda latent.
- Advertise AMD_IBPB_RET to userspace, and fix a related bug where
KVM over-advertises SPEC_CTRL when trying to support cross-vendor
VMs.
- Minor cleanups
- Switch hugepage recovery thread to use vhost_task.
These kthreads can consume significant amounts of CPU time on
behalf of a VM or in response to how the VM behaves (for example
how it accesses its memory); therefore KVM tried to place the
thread in the VM's cgroups and charge the CPU time consumed by that
work to the VM's container.
However the kthreads did not process SIGSTOP/SIGCONT, and therefore
cgroups which had KVM instances inside could not complete freezing.
Fix this by replacing the kthread with a PF_USER_WORKER thread, via
the vhost_task abstraction. Another 100+ lines removed, with
generally better behavior too like having these threads properly
parented in the process tree.
- Revert a workaround for an old CPU erratum (Nehalem/Westmere) that
didn't really work; there was really nothing to work around anyway:
the broken patch was meant to fix nested virtualization, but the
PERF_GLOBAL_CTRL MSR is virtualized and therefore unaffected by the
erratum.
- Fix 6.12 regression where CONFIG_KVM will be built as a module even
if asked to be builtin, as long as neither KVM_INTEL nor KVM_AMD is
'y'.
x86 selftests:
- x86 selftests can now use AVX.
Documentation:
- Use rST internal links
- Reorganize the introduction to the API document
Generic:
- Protect vcpu->pid accesses outside of vcpu->mutex with a rwlock
instead of RCU, so that running a vCPU on a different task doesn't
encounter long due to having to wait for all CPUs become quiescent.
In general both reads and writes are rare, but userspace that
supports confidential computing is introducing the use of "helper"
vCPUs that may jump from one host processor to another. Those will
be very happy to trigger a synchronize_rcu(), and the effect on
performance is quite the disaster"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (298 commits)
KVM: x86: Break CONFIG_KVM_X86's direct dependency on KVM_INTEL || KVM_AMD
KVM: x86: add back X86_LOCAL_APIC dependency
Revert "KVM: VMX: Move LOAD_IA32_PERF_GLOBAL_CTRL errata handling out of setup_vmcs_config()"
KVM: x86: switch hugepage recovery thread to vhost_task
KVM: x86: expose MSR_PLATFORM_INFO as a feature MSR
x86: KVM: Advertise CPUIDs for new instructions in Clearwater Forest
Documentation: KVM: fix malformed table
irqchip/loongson-eiointc: Add virt extension support
LoongArch: KVM: Add irqfd support
LoongArch: KVM: Add PCHPIC user mode read and write functions
LoongArch: KVM: Add PCHPIC read and write functions
LoongArch: KVM: Add PCHPIC device support
LoongArch: KVM: Add EIOINTC user mode read and write functions
LoongArch: KVM: Add EIOINTC read and write functions
LoongArch: KVM: Add EIOINTC device support
LoongArch: KVM: Add IPI user mode read and write function
LoongArch: KVM: Add IPI read and write function
LoongArch: KVM: Add IPI device support
LoongArch: KVM: Add iocsr and mmio bus simulation in kernel
KVM: arm64: Pass on SVE mapping failures
...
|
||
|
Linus Torvalds
|
5c00ff742b |
- The series "zram: optimal post-processing target selection" from
Sergey Senozhatsky improves zram's post-processing selection algorithm.
This leads to improved memory savings.
- Wei Yang has gone to town on the mapletree code, contributing several
series which clean up the implementation:
- "refine mas_mab_cp()"
- "Reduce the space to be cleared for maple_big_node"
- "maple_tree: simplify mas_push_node()"
- "Following cleanup after introduce mas_wr_store_type()"
- "refine storing null"
- The series "selftests/mm: hugetlb_fault_after_madv improvements" from
David Hildenbrand fixes this selftest for s390.
- The series "introduce pte_offset_map_{ro|rw}_nolock()" from Qi Zheng
implements some rationaizations and cleanups in the page mapping code.
- The series "mm: optimize shadow entries removal" from Shakeel Butt
optimizes the file truncation code by speeding up the handling of shadow
entries.
- The series "Remove PageKsm()" from Matthew Wilcox completes the
migration of this flag over to being a folio-based flag.
- The series "Unify hugetlb into arch_get_unmapped_area functions" from
Oscar Salvador implements a bunch of consolidations and cleanups in the
hugetlb code.
- The series "Do not shatter hugezeropage on wp-fault" from Dev Jain
takes away the wp-fault time practice of turning a huge zero page into
small pages. Instead we replace the whole thing with a THP. More
consistent cleaner and potentiall saves a large number of pagefaults.
- The series "percpu: Add a test case and fix for clang" from Andy
Shevchenko enhances and fixes the kernel's built in percpu test code.
- The series "mm/mremap: Remove extra vma tree walk" from Liam Howlett
optimizes mremap() by avoiding doing things which we didn't need to do.
- The series "Improve the tmpfs large folio read performance" from
Baolin Wang teaches tmpfs to copy data into userspace at the folio size
rather than as individual pages. A 20% speedup was observed.
- The series "mm/damon/vaddr: Fix issue in
damon_va_evenly_split_region()" fro Zheng Yejian fixes DAMON splitting.
- The series "memcg-v1: fully deprecate charge moving" from Shakeel Butt
removes the long-deprecated memcgv2 charge moving feature.
- The series "fix error handling in mmap_region() and refactor" from
Lorenzo Stoakes cleanup up some of the mmap() error handling and
addresses some potential performance issues.
- The series "x86/module: use large ROX pages for text allocations" from
Mike Rapoport teaches x86 to use large pages for read-only-execute
module text.
- The series "page allocation tag compression" from Suren Baghdasaryan
is followon maintenance work for the new page allocation profiling
feature.
- The series "page->index removals in mm" from Matthew Wilcox remove
most references to page->index in mm/. A slow march towards shrinking
struct page.
- The series "damon/{self,kunit}tests: minor fixups for DAMON debugfs
interface tests" from Andrew Paniakin performs maintenance work for
DAMON's self testing code.
- The series "mm: zswap swap-out of large folios" from Kanchana Sridhar
improves zswap's batching of compression and decompression. It is a
step along the way towards using Intel IAA hardware acceleration for
this zswap operation.
- The series "kasan: migrate the last module test to kunit" from
Sabyrzhan Tasbolatov completes the migration of the KASAN built-in tests
over to the KUnit framework.
- The series "implement lightweight guard pages" from Lorenzo Stoakes
permits userapace to place fault-generating guard pages within a single
VMA, rather than requiring that multiple VMAs be created for this.
Improved efficiencies for userspace memory allocators are expected.
- The series "memcg: tracepoint for flushing stats" from JP Kobryn uses
tracepoints to provide increased visibility into memcg stats flushing
activity.
- The series "zram: IDLE flag handling fixes" from Sergey Senozhatsky
fixes a zram buglet which potentially affected performance.
- The series "mm: add more kernel parameters to control mTHP" from
Maíra Canal enhances our ability to control/configuremultisize THP from
the kernel boot command line.
- The series "kasan: few improvements on kunit tests" from Sabyrzhan
Tasbolatov has a couple of fixups for the KASAN KUnit tests.
- The series "mm/list_lru: Split list_lru lock into per-cgroup scope"
from Kairui Song optimizes list_lru memory utilization when lockdep is
enabled.
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Merge tag 'mm-stable-2024-11-18-19-27' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- The series "zram: optimal post-processing target selection" from
Sergey Senozhatsky improves zram's post-processing selection
algorithm. This leads to improved memory savings.
- Wei Yang has gone to town on the mapletree code, contributing several
series which clean up the implementation:
- "refine mas_mab_cp()"
- "Reduce the space to be cleared for maple_big_node"
- "maple_tree: simplify mas_push_node()"
- "Following cleanup after introduce mas_wr_store_type()"
- "refine storing null"
- The series "selftests/mm: hugetlb_fault_after_madv improvements" from
David Hildenbrand fixes this selftest for s390.
- The series "introduce pte_offset_map_{ro|rw}_nolock()" from Qi Zheng
implements some rationaizations and cleanups in the page mapping
code.
- The series "mm: optimize shadow entries removal" from Shakeel Butt
optimizes the file truncation code by speeding up the handling of
shadow entries.
- The series "Remove PageKsm()" from Matthew Wilcox completes the
migration of this flag over to being a folio-based flag.
- The series "Unify hugetlb into arch_get_unmapped_area functions" from
Oscar Salvador implements a bunch of consolidations and cleanups in
the hugetlb code.
- The series "Do not shatter hugezeropage on wp-fault" from Dev Jain
takes away the wp-fault time practice of turning a huge zero page
into small pages. Instead we replace the whole thing with a THP. More
consistent cleaner and potentiall saves a large number of pagefaults.
- The series "percpu: Add a test case and fix for clang" from Andy
Shevchenko enhances and fixes the kernel's built in percpu test code.
- The series "mm/mremap: Remove extra vma tree walk" from Liam Howlett
optimizes mremap() by avoiding doing things which we didn't need to
do.
- The series "Improve the tmpfs large folio read performance" from
Baolin Wang teaches tmpfs to copy data into userspace at the folio
size rather than as individual pages. A 20% speedup was observed.
- The series "mm/damon/vaddr: Fix issue in
damon_va_evenly_split_region()" fro Zheng Yejian fixes DAMON
splitting.
- The series "memcg-v1: fully deprecate charge moving" from Shakeel
Butt removes the long-deprecated memcgv2 charge moving feature.
- The series "fix error handling in mmap_region() and refactor" from
Lorenzo Stoakes cleanup up some of the mmap() error handling and
addresses some potential performance issues.
- The series "x86/module: use large ROX pages for text allocations"
from Mike Rapoport teaches x86 to use large pages for
read-only-execute module text.
- The series "page allocation tag compression" from Suren Baghdasaryan
is followon maintenance work for the new page allocation profiling
feature.
- The series "page->index removals in mm" from Matthew Wilcox remove
most references to page->index in mm/. A slow march towards shrinking
struct page.
- The series "damon/{self,kunit}tests: minor fixups for DAMON debugfs
interface tests" from Andrew Paniakin performs maintenance work for
DAMON's self testing code.
- The series "mm: zswap swap-out of large folios" from Kanchana Sridhar
improves zswap's batching of compression and decompression. It is a
step along the way towards using Intel IAA hardware acceleration for
this zswap operation.
- The series "kasan: migrate the last module test to kunit" from
Sabyrzhan Tasbolatov completes the migration of the KASAN built-in
tests over to the KUnit framework.
- The series "implement lightweight guard pages" from Lorenzo Stoakes
permits userapace to place fault-generating guard pages within a
single VMA, rather than requiring that multiple VMAs be created for
this. Improved efficiencies for userspace memory allocators are
expected.
- The series "memcg: tracepoint for flushing stats" from JP Kobryn uses
tracepoints to provide increased visibility into memcg stats flushing
activity.
- The series "zram: IDLE flag handling fixes" from Sergey Senozhatsky
fixes a zram buglet which potentially affected performance.
- The series "mm: add more kernel parameters to control mTHP" from
Maíra Canal enhances our ability to control/configuremultisize THP
from the kernel boot command line.
- The series "kasan: few improvements on kunit tests" from Sabyrzhan
Tasbolatov has a couple of fixups for the KASAN KUnit tests.
- The series "mm/list_lru: Split list_lru lock into per-cgroup scope"
from Kairui Song optimizes list_lru memory utilization when lockdep
is enabled.
* tag 'mm-stable-2024-11-18-19-27' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (215 commits)
cma: enforce non-zero pageblock_order during cma_init_reserved_mem()
mm/kfence: add a new kunit test test_use_after_free_read_nofault()
zram: fix NULL pointer in comp_algorithm_show()
memcg/hugetlb: add hugeTLB counters to memcg
vmstat: call fold_vm_zone_numa_events() before show per zone NUMA event
mm: mmap_lock: check trace_mmap_lock_$type_enabled() instead of regcount
zram: ZRAM_DEF_COMP should depend on ZRAM
MAINTAINERS/MEMORY MANAGEMENT: add document files for mm
Docs/mm/damon: recommend academic papers to read and/or cite
mm: define general function pXd_init()
kmemleak: iommu/iova: fix transient kmemleak false positive
mm/list_lru: simplify the list_lru walk callback function
mm/list_lru: split the lock to per-cgroup scope
mm/list_lru: simplify reparenting and initial allocation
mm/list_lru: code clean up for reparenting
mm/list_lru: don't export list_lru_add
mm/list_lru: don't pass unnecessary key parameters
kasan: add kunit tests for kmalloc_track_caller, kmalloc_node_track_caller
kasan: change kasan_atomics kunit test as KUNIT_CASE_SLOW
kasan: use EXPORT_SYMBOL_IF_KUNIT to export symbols
...
|
||
|
Linus Torvalds
|
06afb0f361 |
tracing updates for v6.13:
- Addition of faultable tracepoints
There's a tracepoint attached to both a system call entry and exit. This
location is known to allow page faults. The tracepoints are called under
an rcu_read_lock() which does not allow faults that can sleep. This limits
the ability of tracepoint handlers to page fault in user space system call
parameters. Now these tracepoints have been made "faultable", allowing the
callbacks to fault in user space parameters and record them.
Note, only the infrastructure has been implemented. The consumers (perf,
ftrace, BPF) now need to have their code modified to allow faults.
- Fix up of BPF code for the tracepoint faultable logic
- Update tracepoints to use the new static branch API
- Remove trace_*_rcuidle() variants and the SRCU protection they used
- Remove unused TRACE_EVENT_FL_FILTERED logic
- Replace strncpy() with strscpy() and memcpy()
- Use replace per_cpu_ptr(smp_processor_id()) with this_cpu_ptr()
- Fix perf events to not duplicate samples when tracing is enabled
- Replace atomic64_add_return(1, counter) with atomic64_inc_return(counter)
- Make stack trace buffer 4K instead of PAGE_SIZE
- Remove TRACE_FLAG_IRQS_NOSUPPORT flag as it was never used
- Get the true return address for function tracer when function graph tracer
is also running.
When function_graph trace is running along with function tracer,
the parent function of the function tracer sometimes is
"return_to_handler", which is the function graph trampoline to record
the exit of the function. Use existing logic that calls into the
fgraph infrastructure to find the real return address.
- Remove (un)regfunc pointers out of tracepoint structure
- Added last minute bug fix for setting pending modules in stack function
filter.
echo "write*:mod:ext3" > /sys/kernel/tracing/stack_trace_filter
Would cause a kernel NULL dereference.
- Minor clean ups
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Merge tag 'trace-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing updates from Steven Rostedt:
- Addition of faultable tracepoints
There's a tracepoint attached to both a system call entry and exit.
This location is known to allow page faults. The tracepoints are
called under an rcu_read_lock() which does not allow faults that can
sleep. This limits the ability of tracepoint handlers to page fault
in user space system call parameters. Now these tracepoints have been
made "faultable", allowing the callbacks to fault in user space
parameters and record them.
Note, only the infrastructure has been implemented. The consumers
(perf, ftrace, BPF) now need to have their code modified to allow
faults.
- Fix up of BPF code for the tracepoint faultable logic
- Update tracepoints to use the new static branch API
- Remove trace_*_rcuidle() variants and the SRCU protection they used
- Remove unused TRACE_EVENT_FL_FILTERED logic
- Replace strncpy() with strscpy() and memcpy()
- Use replace per_cpu_ptr(smp_processor_id()) with this_cpu_ptr()
- Fix perf events to not duplicate samples when tracing is enabled
- Replace atomic64_add_return(1, counter) with
atomic64_inc_return(counter)
- Make stack trace buffer 4K instead of PAGE_SIZE
- Remove TRACE_FLAG_IRQS_NOSUPPORT flag as it was never used
- Get the true return address for function tracer when function graph
tracer is also running.
When function_graph trace is running along with function tracer, the
parent function of the function tracer sometimes is
"return_to_handler", which is the function graph trampoline to record
the exit of the function. Use existing logic that calls into the
fgraph infrastructure to find the real return address.
- Remove (un)regfunc pointers out of tracepoint structure
- Added last minute bug fix for setting pending modules in stack
function filter.
echo "write*:mod:ext3" > /sys/kernel/tracing/stack_trace_filter
Would cause a kernel NULL dereference.
- Minor clean ups
* tag 'trace-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (31 commits)
ftrace: Fix regression with module command in stack_trace_filter
tracing: Fix function name for trampoline
ftrace: Get the true parent ip for function tracer
tracing: Remove redundant check on field->field in histograms
bpf: ensure RCU Tasks Trace GP for sleepable raw tracepoint BPF links
bpf: decouple BPF link/attach hook and BPF program sleepable semantics
bpf: put bpf_link's program when link is safe to be deallocated
tracing: Replace strncpy() with strscpy() when copying comm
tracing: Add might_fault() check in __DECLARE_TRACE_SYSCALL
tracing: Fix syscall tracepoint use-after-free
tracing: Introduce tracepoint_is_faultable()
tracing: Introduce tracepoint extended structure
tracing: Remove TRACE_FLAG_IRQS_NOSUPPORT
tracing: Replace multiple deprecated strncpy with memcpy
tracing: Make percpu stack trace buffer invariant to PAGE_SIZE
tracing: Use atomic64_inc_return() in trace_clock_counter()
trace/trace_event_perf: remove duplicate samples on the first tracepoint event
tracing/bpf: Add might_fault check to syscall probes
tracing/perf: Add might_fault check to syscall probes
tracing/ftrace: Add might_fault check to syscall probes
...
|
||
|
Lizhi Hou
|
aac243092b |
accel/amdxdna: Add command execution
Add interfaces for user application to submit command and wait for its completion. Co-developed-by: Min Ma <min.ma@amd.com> Signed-off-by: Min Ma <min.ma@amd.com> Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com> Signed-off-by: Lizhi Hou <lizhi.hou@amd.com> Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com> Link: https://patchwork.freedesktop.org/patch/msgid/20241118172942.2014541-8-lizhi.hou@amd.com |
||
|
Lizhi Hou
|
b87f920b93 |
accel/amdxdna: Support hardware mailbox
The hardware mailboxes are used by the driver to submit requests to firmware and receive the completion notices from hardware. Initially, a management mailbox channel is up and running. The driver may request firmware to create/destroy more channels dynamically through management channel. Add driver internal mailbox interfaces. - create/destroy a mailbox channel instance - send a message to the firmware through a specific channel - wait for a notification from the specific channel Co-developed-by: George Yang <George.Yang@amd.com> Signed-off-by: George Yang <George.Yang@amd.com> Co-developed-by: Min Ma <min.ma@amd.com> Signed-off-by: Min Ma <min.ma@amd.com> Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com> Signed-off-by: Lizhi Hou <lizhi.hou@amd.com> Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com> Link: https://patchwork.freedesktop.org/patch/msgid/20241118172942.2014541-4-lizhi.hou@amd.com |
||
|
Linus Torvalds
|
51ae62a12c |
dma-mapping updates for Linux 6.13
- improve the DMA API tracing code (Sean Anderson) - misc cleanups (Christoph Hellwig, Sui Jingfeng) - fix pointer abuse when finding the shared DMA pool (Geert Uytterhoeven) - fix a deadlock in dma-debug (Levi Yun) -----BEGIN PGP SIGNATURE----- iQI/BAABCgApFiEEgdbnc3r/njty3Iq9D55TZVIEUYMFAmc8xN8LHGhjaEBsc3Qu ZGUACgkQD55TZVIEUYNwEBAAtd0zTiNuEUklY6YtZ7l/Zaudibmq1klHLGAQZEa9 J4P2zzJ6xTkUblq/aVmFUQmf+vuuszjHIrrXnL3tAulSQKxS5Zj3Cci4cW4IAfBn GXB3OTR2lgXSk+8sulgiwc1AA8xgIFJJgZDTni1WdiW9LwLvUyYI1XNVAwCYOM2J HS2QxIySm3eg23F5bRz+Xl3LQlWYlHkMHryqKloHWIqchmVpYlYbj7uBMjAH4FKz l3zhd9pZSp9w5NNCp2Y/d81XdOUSjcYSR1gUotLzmW0Sj3YjnKXKdjjlPrj3zimb 9EhgdalnpVrJ4Nr7MmpSUEbTVs+hBjXDoxTnnBRlKEl5aIKqceCrSBvoP70ygbkf KRqNS4ZxKe59cfnWAZQVcg8g01TetCoJR6QyGaoTE9Lz+9cPl2xAwyFmcYN2w/Cp qs0ZEFiNpqLAN5zwR/Pakz5YgIA/3N5MW0d9X9yEH9l4+HUMxWIF/qvThBSsGswT EmVUQqPpEzGJrcNYgC1UsEBltGmle02BwcoFEdMr7bzldW7yIpoDEOkKkBM3JFF9 vgkpAkZGA5j4VMSkSwOrhi1rI0XAoImtJeM0wqhLtpXgQDjrMd3DaW6by6uUeH5x DcXf6qVOAsB04je9JkHh9I4BXVrWC01MSgFdjfQRl9gktn7970YFswG4ksYAwxU6 xHQ= =ivZc -----END PGP SIGNATURE----- Merge tag 'dma-mapping-6.13-2024-11-19' of git://git.infradead.org/users/hch/dma-mapping Pull dma-mapping updates from Christoph Hellwig: - improve the DMA API tracing code (Sean Anderson) - misc cleanups (Christoph Hellwig, Sui Jingfeng) - fix pointer abuse when finding the shared DMA pool (Geert Uytterhoeven) - fix a deadlock in dma-debug (Levi Yun) * tag 'dma-mapping-6.13-2024-11-19' of git://git.infradead.org/users/hch/dma-mapping: dma-mapping: save base/size instead of pointer to shared DMA pool dma-mapping: fix swapped dir/flags arguments to trace_dma_alloc_sgt_err dma-mapping: drop unneeded includes from dma-mapping.h dma-mapping: trace more error paths dma-mapping: use trace_dma_alloc for dma_alloc* instead of using trace_dma_map dma-mapping: trace dma_alloc/free direction dma-mapping: use macros to define events in a class dma-mapping: remove an outdated comment from dma-map-ops.h dma-debug: remove DMA_API_DEBUG_SG dma-debug: store a phys_addr_t in struct dma_debug_entry dma-debug: fix a possible deadlock on radix_lock |
||
|
Linus Torvalds
|
fcc79e1714 |
Networking changes for 6.13.
The most significant set of changes is the per netns RTNL. The new
behavior is disabled by default, regression risk should be contained.
Notably the new config knob PTP_1588_CLOCK_VMCLOCK will inherit its
default value from PTP_1588_CLOCK_KVM, as the first is intended to be
a more reliable replacement for the latter.
Core
----
- Started a very large, in-progress, effort to make the RTNL lock
scope per network-namespace, thus reducing the lock contention
significantly in the containerized use-case, comprising:
- RCU-ified some relevant slices of the FIB control path
- introduce basic per netns locking helpers
- namespacified the IPv4 address hash table
- remove rtnl_register{,_module}() in favour of rtnl_register_many()
- refactor rtnl_{new,del,set}link() moving as much validation as
possible out of RTNL lock
- convert all phonet doit() and dumpit() handlers to RCU
- convert IPv4 addresses manipulation to per-netns RTNL
- convert virtual interface creation to per-netns RTNL
the per-netns lock infra is guarded by the CONFIG_DEBUG_NET_SMALL_RTNL
knob, disabled by default ad interim.
- Introduce NAPI suspension, to efficiently switching between busy
polling (NAPI processing suspended) and normal processing.
- Migrate the IPv4 routing input, output and control path from direct
ToS usage to DSCP macros. This is a work in progress to make ECN
handling consistent and reliable.
- Add drop reasons support to the IPv4 rotue input path, allowing
better introspection in case of packets drop.
- Make FIB seqnum lockless, dropping RTNL protection for read
access.
- Make inet{,v6} addresses hashing less predicable.
- Allow providing timestamp OPT_ID via cmsg, to correlate TX packets
and timestamps
Things we sprinkled into general kernel code
--------------------------------------------
- Add small file operations for debugfs, to reduce the struct ops size.
- Refactoring and optimization for the implementation of page_frag API,
This is a preparatory work to consolidate the page_frag
implementation.
Netfilter
---------
- Optimize set element transactions to reduce memory consumption
- Extended netlink error reporting for attribute parser failure.
- Make legacy xtables configs user selectable, giving users
the option to configure iptables without enabling any other config.
- Address a lot of false-positive RCU issues, pointed by recent
CI improvements.
BPF
---
- Put xsk sockets on a struct diet and add various cleanups. Overall,
this helps to bump performance by 12% for some workloads.
- Extend BPF selftests to increase coverage of XDP features in
combination with BPF cpumap.
- Optimize and homogenize bpf_csum_diff helper for all archs and also
add a batch of new BPF selftests for it.
- Extend netkit with an option to delegate skb->{mark,priority}
scrubbing to its BPF program.
- Make the bpf_get_netns_cookie() helper available also to tc(x) BPF
programs.
Protocols
---------
- Introduces 4-tuple hash for connected udp sockets, speeding-up
significantly connected sockets lookup.
- Add a fastpath for some TCP timers that usually expires after close,
the socket lock contention.
- Add inbound and outbound xfrm state caches to speed up state lookups.
- Avoid sending MPTCP advertisements on stale subflows, reducing
risks on loosing them.
- Make neighbours table flushing more scalable, maintaining per device
neigh lists.
Driver API
----------
- Introduce a unified interface to configure transmission H/W shaping,
and expose it to user-space via generic-netlink.
- Add support for per-NAPI config via netlink. This makes napi
configuration persistent across queues removal and re-creation.
Requires driver updates, currently supported drivers are:
nVidia/Mellanox mlx4 and mlx5, Broadcom brcm and Intel ice.
- Add ethtool support for writing SFP / PHY firmware blocks.
- Track RSS context allocation from ethtool core.
- Implement support for mirroring to DSA CPU port, via TC mirror
offload.
- Consolidate FDB updates notification, to avoid duplicates on
device-specific entries.
- Expose DPLL clock quality level to the user-space.
- Support master-slave PHY config via device tree.
Tests and tooling
-----------------
- forwarding: introduce deferred commands, to simplify
the cleanup phase
Drivers
-------
- Updated several drivers - Amazon vNic, Google vNic, Microsoft vNic,
Intel e1000e and Broadcom Tigon3 - to use netdev-genl to link the
IRQs and queues to NAPI IDs, allowing busy polling and better
introspection.
- Ethernet high-speed NICs:
- nVidia/Mellanox:
- mlx5:
- a large refactor to implement support for cross E-Switch
scheduling
- refactor H/W conter management to let it scale better
- H/W GRO cleanups
- Intel (100G, ice)::
- adds support for ethtool reset
- implement support for per TX queue H/W shaping
- AMD/Solarflare:
- implement per device queue stats support
- Broadcom (bnxt):
- improve wildcard l4proto on IPv4/IPv6 ntuple rules
- Marvell Octeon:
- Adds representor support for each Resource Virtualization Unit
(RVU) device.
- Hisilicon:
- adds support for the BMC Gigabit Ethernet
- IBM (EMAC):
- driver cleanup and modernization
- Cisco (VIC):
- raise the queues number limit to 256
- Ethernet virtual:
- Google vNIC:
- implements page pool support
- macsec:
- inherit lower device's features and TSO limits when offloading
- virtio_net:
- enable premapped mode by default
- support for XDP socket(AF_XDP) zerocopy TX
- wireguard:
- set the TSO max size to be GSO_MAX_SIZE, to aggregate larger
packets.
- Ethernet NICs embedded and virtual:
- Broadcom ASP:
- enable software timestamping
- Freescale:
- add enetc4 PF driver
- MediaTek: Airoha SoC:
- implement BQL support
- RealTek r8169:
- enable TSO by default on r8168/r8125
- implement extended ethtool stats
- Renesas AVB:
- enable TX checksum offload
- Synopsys (stmmac):
- support header splitting for vlan tagged packets
- move common code for DWMAC4 and DWXGMAC into a separate FPE
module.
- Add the dwmac driver support for T-HEAD TH1520 SoC
- Synopsys (xpcs):
- driver refactor and cleanup
- TI:
- icssg_prueth: add VLAN offload support
- Xilinx emaclite:
- adds clock support
- Ethernet switches:
- Microchip:
- implement support for the lan969x Ethernet switch family
- add LAN9646 switch support to KSZ DSA driver
- Ethernet PHYs:
- Marvel: 88q2x: enable auto negotiation
- Microchip: add support for LAN865X Rev B1 and LAN867X Rev C1/C2
- PTP:
- Add support for the Amazon virtual clock device
- Add PtP driver for s390 clocks
- WiFi:
- mac80211
- EHT 1024 aggregation size for transmissions
- new operation to indicate that a new interface is to be added
- support radio separation of multi-band devices
- move wireless extension spy implementation to libiw
- Broadcom:
- brcmfmac: optional LPO clock support
- Microchip:
- add support for Atmel WILC3000
- Qualcomm (ath12k):
- firmware coredump collection support
- add debugfs support for a multitude of statistics
- Qualcomm (ath5k):
- Arcadyan ARV45XX AR2417 & Gigaset SX76[23] AR241[34]A support
- Realtek:
- rtw88: 8821au and 8812au USB adapters support
- rtw89: add thermal protection
- rtw89: fine tune BT-coexsitence to improve user experience
- rtw89: firmware secure boot for WiFi 6 chip
- Bluetooth
- add Qualcomm WCN785x support for ids Foxconn 0xe0fc/0xe0f3 and
0x13d3:0x3623
- add Realtek RTL8852BE support for id Foxconn 0xe123
- add MediaTek MT7920 support for wireless module ids
- btintel_pcie: add handshake between driver and firmware
- btintel_pcie: add recovery mechanism
- btnxpuart: add GPIO support to power save feature
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
"The most significant set of changes is the per netns RTNL. The new
behavior is disabled by default, regression risk should be contained.
Notably the new config knob PTP_1588_CLOCK_VMCLOCK will inherit its
default value from PTP_1588_CLOCK_KVM, as the first is intended to be
a more reliable replacement for the latter.
Core:
- Started a very large, in-progress, effort to make the RTNL lock
scope per network-namespace, thus reducing the lock contention
significantly in the containerized use-case, comprising:
- RCU-ified some relevant slices of the FIB control path
- introduce basic per netns locking helpers
- namespacified the IPv4 address hash table
- remove rtnl_register{,_module}() in favour of
rtnl_register_many()
- refactor rtnl_{new,del,set}link() moving as much validation as
possible out of RTNL lock
- convert all phonet doit() and dumpit() handlers to RCU
- convert IPv4 addresses manipulation to per-netns RTNL
- convert virtual interface creation to per-netns RTNL
the per-netns lock infrastructure is guarded by the
CONFIG_DEBUG_NET_SMALL_RTNL knob, disabled by default ad interim.
- Introduce NAPI suspension, to efficiently switching between busy
polling (NAPI processing suspended) and normal processing.
- Migrate the IPv4 routing input, output and control path from direct
ToS usage to DSCP macros. This is a work in progress to make ECN
handling consistent and reliable.
- Add drop reasons support to the IPv4 rotue input path, allowing
better introspection in case of packets drop.
- Make FIB seqnum lockless, dropping RTNL protection for read access.
- Make inet{,v6} addresses hashing less predicable.
- Allow providing timestamp OPT_ID via cmsg, to correlate TX packets
and timestamps
Things we sprinkled into general kernel code:
- Add small file operations for debugfs, to reduce the struct ops
size.
- Refactoring and optimization for the implementation of page_frag
API, This is a preparatory work to consolidate the page_frag
implementation.
Netfilter:
- Optimize set element transactions to reduce memory consumption
- Extended netlink error reporting for attribute parser failure.
- Make legacy xtables configs user selectable, giving users the
option to configure iptables without enabling any other config.
- Address a lot of false-positive RCU issues, pointed by recent CI
improvements.
BPF:
- Put xsk sockets on a struct diet and add various cleanups. Overall,
this helps to bump performance by 12% for some workloads.
- Extend BPF selftests to increase coverage of XDP features in
combination with BPF cpumap.
- Optimize and homogenize bpf_csum_diff helper for all archs and also
add a batch of new BPF selftests for it.
- Extend netkit with an option to delegate skb->{mark,priority}
scrubbing to its BPF program.
- Make the bpf_get_netns_cookie() helper available also to tc(x) BPF
programs.
Protocols:
- Introduces 4-tuple hash for connected udp sockets, speeding-up
significantly connected sockets lookup.
- Add a fastpath for some TCP timers that usually expires after
close, the socket lock contention.
- Add inbound and outbound xfrm state caches to speed up state
lookups.
- Avoid sending MPTCP advertisements on stale subflows, reducing
risks on loosing them.
- Make neighbours table flushing more scalable, maintaining per
device neigh lists.
Driver API:
- Introduce a unified interface to configure transmission H/W
shaping, and expose it to user-space via generic-netlink.
- Add support for per-NAPI config via netlink. This makes napi
configuration persistent across queues removal and re-creation.
Requires driver updates, currently supported drivers are:
nVidia/Mellanox mlx4 and mlx5, Broadcom brcm and Intel ice.
- Add ethtool support for writing SFP / PHY firmware blocks.
- Track RSS context allocation from ethtool core.
- Implement support for mirroring to DSA CPU port, via TC mirror
offload.
- Consolidate FDB updates notification, to avoid duplicates on
device-specific entries.
- Expose DPLL clock quality level to the user-space.
- Support master-slave PHY config via device tree.
Tests and tooling:
- forwarding: introduce deferred commands, to simplify the cleanup
phase
Drivers:
- Updated several drivers - Amazon vNic, Google vNic, Microsoft vNic,
Intel e1000e and Broadcom Tigon3 - to use netdev-genl to link the
IRQs and queues to NAPI IDs, allowing busy polling and better
introspection.
- Ethernet high-speed NICs:
- nVidia/Mellanox:
- mlx5:
- a large refactor to implement support for cross E-Switch
scheduling
- refactor H/W conter management to let it scale better
- H/W GRO cleanups
- Intel (100G, ice)::
- add support for ethtool reset
- implement support for per TX queue H/W shaping
- AMD/Solarflare:
- implement per device queue stats support
- Broadcom (bnxt):
- improve wildcard l4proto on IPv4/IPv6 ntuple rules
- Marvell Octeon:
- Add representor support for each Resource Virtualization Unit
(RVU) device.
- Hisilicon:
- add support for the BMC Gigabit Ethernet
- IBM (EMAC):
- driver cleanup and modernization
- Cisco (VIC):
- raise the queues number limit to 256
- Ethernet virtual:
- Google vNIC:
- implement page pool support
- macsec:
- inherit lower device's features and TSO limits when
offloading
- virtio_net:
- enable premapped mode by default
- support for XDP socket(AF_XDP) zerocopy TX
- wireguard:
- set the TSO max size to be GSO_MAX_SIZE, to aggregate larger
packets.
- Ethernet NICs embedded and virtual:
- Broadcom ASP:
- enable software timestamping
- Freescale:
- add enetc4 PF driver
- MediaTek: Airoha SoC:
- implement BQL support
- RealTek r8169:
- enable TSO by default on r8168/r8125
- implement extended ethtool stats
- Renesas AVB:
- enable TX checksum offload
- Synopsys (stmmac):
- support header splitting for vlan tagged packets
- move common code for DWMAC4 and DWXGMAC into a separate FPE
module.
- add dwmac driver support for T-HEAD TH1520 SoC
- Synopsys (xpcs):
- driver refactor and cleanup
- TI:
- icssg_prueth: add VLAN offload support
- Xilinx emaclite:
- add clock support
- Ethernet switches:
- Microchip:
- implement support for the lan969x Ethernet switch family
- add LAN9646 switch support to KSZ DSA driver
- Ethernet PHYs:
- Marvel: 88q2x: enable auto negotiation
- Microchip: add support for LAN865X Rev B1 and LAN867X Rev C1/C2
- PTP:
- Add support for the Amazon virtual clock device
- Add PtP driver for s390 clocks
- WiFi:
- mac80211
- EHT 1024 aggregation size for transmissions
- new operation to indicate that a new interface is to be added
- support radio separation of multi-band devices
- move wireless extension spy implementation to libiw
- Broadcom:
- brcmfmac: optional LPO clock support
- Microchip:
- add support for Atmel WILC3000
- Qualcomm (ath12k):
- firmware coredump collection support
- add debugfs support for a multitude of statistics
- Qualcomm (ath5k):
- Arcadyan ARV45XX AR2417 & Gigaset SX76[23] AR241[34]A support
- Realtek:
- rtw88: 8821au and 8812au USB adapters support
- rtw89: add thermal protection
- rtw89: fine tune BT-coexsitence to improve user experience
- rtw89: firmware secure boot for WiFi 6 chip
- Bluetooth
- add Qualcomm WCN785x support for ids Foxconn 0xe0fc/0xe0f3 and
0x13d3:0x3623
- add Realtek RTL8852BE support for id Foxconn 0xe123
- add MediaTek MT7920 support for wireless module ids
- btintel_pcie: add handshake between driver and firmware
- btintel_pcie: add recovery mechanism
- btnxpuart: add GPIO support to power save feature"
* tag 'net-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1475 commits)
mm: page_frag: fix a compile error when kernel is not compiled
Documentation: tipc: fix formatting issue in tipc.rst
selftests: nic_performance: Add selftest for performance of NIC driver
selftests: nic_link_layer: Add selftest case for speed and duplex states
selftests: nic_link_layer: Add link layer selftest for NIC driver
bnxt_en: Add FW trace coredump segments to the coredump
bnxt_en: Add a new ethtool -W dump flag
bnxt_en: Add 2 parameters to bnxt_fill_coredump_seg_hdr()
bnxt_en: Add functions to copy host context memory
bnxt_en: Do not free FW log context memory
bnxt_en: Manage the FW trace context memory
bnxt_en: Allocate backing store memory for FW trace logs
bnxt_en: Add a 'force' parameter to bnxt_free_ctx_mem()
bnxt_en: Refactor bnxt_free_ctx_mem()
bnxt_en: Add mem_valid bit to struct bnxt_ctx_mem_type
bnxt_en: Update firmware interface spec to 1.10.3.85
selftests/bpf: Add some tests with sockmap SK_PASS
bpf: fix recursive lock when verdict program return SK_PASS
wireguard: device: support big tcp GSO
wireguard: selftests: load nf_conntrack if not present
...
|
||
|
Linus Torvalds
|
7d75606665 |
pwm: Changes for v6.13-rc1
This pull request prominently contains a new abstraction for PWM waveforms that is more expressive that the legacy one. Compared to the old abstraction it contains a duty_offset member instead of polarity. This new abstraction is already used in an ADC driver merged into the iio tree. So I expect you will get a part of this tree also via the iio pull request for 6.13-rc1 (tag pwm/duty_offset-for-6.13-rc1). Otherwise it's the usual collection of fixes, cleanups and dt doc updates. This time around thanks go to Andy Shevchenko, Clark Wang, Conor Dooley, David Lechner, Dimitri Fedrau, Frank Li, Jun Li, Kelvin Zhang, Krzysztof Kozlowski, Nuno Sa, Shen Lichuan and Trevor Gamblin for code contributions, testing and review. -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEP4GsaTp6HlmJrf7Tj4D7WH0S/k4FAmc7DoAACgkQj4D7WH0S /k5tEgf/QJY8mAPPZR45dDo+GdUnZAaV85sseOezeApjB6kMYXKsKWoDC0uQ9m40 t7zkR8rXCk84rYSg4fGpcWL12v03n8cXmABkJUsqkUkLCcU/pifKzxanC25IWMH1 DGCW8tev4/NSe2ud9kLmFR/p85aioIW47Az3QH096Wv+Y5ij3v5e8PHBIaSiWHlb gfQI1XWerHSbAZexF132zGZOD/TBWb6djAQKACh5KWBPWB54zK3n3ngxoOCSMKSh Li8nfVyy32mPurLfTqaTaAHg7uGrcCGOVhqnXSQiuUayMlV/T7FX/uwfF/X/YKFm iqIPoYeUhLHmHJkHLACtPzUajkTJbg== =3d9l -----END PGP SIGNATURE----- Merge tag 'pwm/for-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux Pull pwm updates from Uwe Kleine-König: "This contains a new abstraction for PWM waveforms that is more expressive that the legacy one. Compared to the old abstraction it contains a duty_offset member instead of polarity. This new abstraction is already used in an ADC driver merged into the iio tree. The new API requires changes to the lowlevel drivers. For now there are two drivers that are converted to the new API (axi-pwmgen and stm32). Converted drivers continue to work with the old API. Drivers not yet converted only work with the older API. Otherwise it's the usual collection of fixes, cleanups and dt doc updates. This time around thanks go to Andy Shevchenko, Clark Wang, Conor Dooley, David Lechner, Dimitri Fedrau, Frank Li, Jun Li, Kelvin Zhang, Krzysztof Kozlowski, Nuno Sa, Shen Lichuan and Trevor Gamblin for code contributions, testing and review" * tag 'pwm/for-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux: pwm: Assume a disabled PWM to emit a constant inactive output pwm: core: export pwm_get_state_hw() pwm: core: use device_match_name() instead of strcmp(dev_name(... dt-bindings: pwm: adi,axi-pwmgen: Increase #pwm-cells to 3 pwm: imx27: Use clk_bulk_*() API to simplify clock handling pwm: imx27: Workaround of the pwm output bug when decrease the duty cycle pwm: axi-pwmgen: Enable FORCE_ALIGN by default pwm: axi-pwmgen: Rename 0x10 register dt-bindings: pwm: amlogic: Document C3 PWM pwm: axi-pwmgen: Create a dedicated function for getting driver data from a chip pwm: atmel-tcb: Use min() macro pwm: stm32: Fix error checking for a regmap_read() call pwm: Add kernel doc for members added to pwm_ops recently pwm: Reorder symbols in core.c pwm: stm32: Implementation of the waveform callbacks pwm: axi-pwmgen: Implementation of the waveform callbacks pwm: Add tracing for waveform callbacks pwm: Provide new consumer API functions for waveforms pwm: New abstraction for PWM waveforms pwm: Add more locking |
||
|
Linus Torvalds
|
c1f2ffe207 |
- Log and handle twp new AMD-specific MCA registers: SYND1 and SYND2 and
report the Field Replaceable Unit text info reported through them
- Add support for handling variable-sized SMCA BERT records
- Add the capability for reporting vendor-specific RAS error info without
adding vendor-specific fields to struct mce
- Cleanups
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Merge tag 'ras_core_for_v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RAS updates from Borislav Petkov:
- Log and handle twp new AMD-specific MCA registers: SYND1 and SYND2
and report the Field Replaceable Unit text info reported through them
- Add support for handling variable-sized SMCA BERT records
- Add the capability for reporting vendor-specific RAS error info
without adding vendor-specific fields to struct mce
- Cleanups
* tag 'ras_core_for_v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
EDAC/mce_amd: Add support for FRU text in MCA
x86/mce/apei: Handle variable SMCA BERT record size
x86/MCE/AMD: Add support for new MCA_SYND{1,2} registers
tracing: Add __print_dynamic_array() helper
x86/mce: Add wrapper for struct mce to export vendor specific info
x86/mce/intel: Use MCG_BANKCNT_MASK instead of 0xff
x86/mce/mcelog: Use xchg() to get and clear the flags
|
||
|
Linus Torvalds
|
8350142a4b |
for-6.13/io_uring-20241118
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||
|
Linus Torvalds
|
77a0cfafa9 |
for-6.13/block-20241118
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Merge tag 'for-6.13/block-20241118' of git://git.kernel.dk/linux
Pull block updates from Jens Axboe:
- NVMe updates via Keith:
- Use uring_cmd helper (Pavel)
- Host Memory Buffer allocation enhancements (Christoph)
- Target persistent reservation support (Guixin)
- Persistent reservation tracing (Guixen)
- NVMe 2.1 specification support (Keith)
- Rotational Meta Support (Matias, Wang, Keith)
- Volatile cache detection enhancment (Guixen)
- MD updates via Song:
- Maintainers update
- raid5 sync IO fix
- Enhance handling of faulty and blocked devices
- raid5-ppl atomic improvement
- md-bitmap fix
- Support for manually defining embedded partition tables
- Zone append fixes and cleanups
- Stop sending the queued requests in the plug list to the driver
->queue_rqs() handle in reverse order.
- Zoned write plug cleanups
- Cleanups disk stats tracking and add support for disk stats for
passthrough IO
- Add preparatory support for file system atomic writes
- Add lockdep support for queue freezing. Already found a bunch of
issues, and some fixes for that are in here. More will be coming.
- Fix race between queue stopping/quiescing and IO queueing
- ublk recovery improvements
- Fix ublk mmap for 64k pages
- Various fixes and cleanups
* tag 'for-6.13/block-20241118' of git://git.kernel.dk/linux: (118 commits)
MAINTAINERS: Update git tree for mdraid subsystem
block: make struct rq_list available for !CONFIG_BLOCK
block/genhd: use seq_put_decimal_ull for diskstats decimal values
block: don't reorder requests in blk_mq_add_to_batch
block: don't reorder requests in blk_add_rq_to_plug
block: add a rq_list type
block: remove rq_list_move
virtio_blk: reverse request order in virtio_queue_rqs
nvme-pci: reverse request order in nvme_queue_rqs
btrfs: validate queue limits
block: export blk_validate_limits
nvmet: add tracing of reservation commands
nvme: parse reservation commands's action and rtype to string
nvmet: report ns's vwc not present
md/raid5: Increase r5conf.cache_name size
block: remove the ioprio field from struct request
block: remove the write_hint field from struct request
nvme: check ns's volatile write cache not present
nvme: add rotational support
nvme: use command set independent id ns if available
...
|
||
|
Linus Torvalds
|
c14a8a4c04 |
for-6.13-tag
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Merge tag 'for-6.13-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba:
"Changes outside of btrfs: add io_uring command flag to track a dying
task (the rest will go via the block git tree).
User visible changes:
- wire encoded read (ioctl) to io_uring commands, this can be used on
itself, in the future this will allow 'send' to be asynchronous. As
a consequence, the encoded read ioctl can also work in non-blocking
mode
- new ioctl to wait for cleaned subvolumes, no need to use the
generic and root-only SEARCH_TREE ioctl, will be used by "btrfs
subvol sync"
- recognize different paths/symlinks for the same devices and don't
report them during rescanning, this can be observed with LVM or DM
- seeding device use case change, the sprout device (the one
capturing new writes) will not clear the read-only status of the
super block; this prevents accumulating space from deleted
snapshots
Performance improvements:
- reduce lock contention when traversing extent buffers
- reduce extent tree lock contention when searching for inline
backref
- switch from rb-trees to xarray for delayed ref tracking,
improvements due to better cache locality, branching factors and
more compact data structures
- enable extent map shrinker again (prevent memory exhaustion under
some types of IO load), reworked to run in a single worker thread
(there used to be problems causing long stalls under memory
pressure)
Core changes:
- raid-stripe-tree feature updates:
- make device replace and scrub work
- implement partial deletion of stripe extents
- new selftests
- split the config option BTRFS_DEBUG and add EXPERIMENTAL for
features that are experimental or with known problems so we don't
misuse debugging config for that
- subpage mode updates (sector < page):
- update compression implementations
- update writepage, writeback
- continued folio API conversions:
- buffered writes
- make buffered write copy one page at a time, preparatory work for
future integration with large folios, may cause performance drop
- proper locking of root item regarding starting send
- error handling improvements
- code cleanups and refactoring:
- dead code removal
- unused parameter reduction
- lockdep assertions"
* tag 'for-6.13-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (119 commits)
btrfs: send: check for read-only send root under critical section
btrfs: send: check for dead send root under critical section
btrfs: remove check for NULL fs_info at btrfs_folio_end_lock_bitmap()
btrfs: fix warning on PTR_ERR() against NULL device at btrfs_control_ioctl()
btrfs: fix a typo in btrfs_use_zone_append
btrfs: avoid superfluous calls to free_extent_map() in btrfs_encoded_read()
btrfs: simplify logic to decrement snapshot counter at btrfs_mksnapshot()
btrfs: remove hole from struct btrfs_delayed_node
btrfs: update stale comment for struct btrfs_delayed_ref_node::add_list
btrfs: add new ioctl to wait for cleaned subvolumes
btrfs: simplify range tracking in cow_file_range()
btrfs: remove conditional path allocation in btrfs_read_locked_inode()
btrfs: push cleanup into btrfs_read_locked_inode()
io_uring/cmd: let cmds to know about dying task
btrfs: add struct io_btrfs_cmd as type for io_uring_cmd_to_pdu()
btrfs: add io_uring command for encoded reads (ENCODED_READ ioctl)
btrfs: move priv off stack in btrfs_encoded_read_regular_fill_pages()
btrfs: don't sleep in btrfs_encoded_read() if IOCB_NOWAIT is set
btrfs: change btrfs_encoded_read() so that reading of extent is done by caller
btrfs: remove pointless iocb::ki_pos addition in btrfs_encoded_read()
...
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Linus Torvalds
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8dcf44fcad |
vfs-6.13.netfs
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Merge tag 'vfs-6.13.netfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull netfs updates from Christian Brauner:
"Various fixes for the netfs library and related infrastructure:
cachefiles:
- Fix a dentry leak in cachefiles_open_file()
- Fix incorrect length return value in
cachefiles_ondemand_fd_write_iter()
- Fix missing pos updates in cachefiles_ondemand_fd_write_iter()
- Clean up in cachefiles_commit_tmpfile()
- Fix NULL pointer dereference in object->file
- Add a memory barrier for FSCACHE_VOLUME_CREATING
netfs:
- Remove call to folio_index()
- Fix a few minor bugs in netfs_page_mkwrite()
- Remove unnecessary references to pages"
* tag 'vfs-6.13.netfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
netfs/fscache: Add a memory barrier for FSCACHE_VOLUME_CREATING
cachefiles: Fix NULL pointer dereference in object->file
cachefiles: Clean up in cachefiles_commit_tmpfile()
cachefiles: Fix missing pos updates in cachefiles_ondemand_fd_write_iter()
cachefiles: Fix incorrect length return value in cachefiles_ondemand_fd_write_iter()
netfs: Remove unnecessary references to pages
netfs: Fix a few minor bugs in netfs_page_mkwrite()
netfs: Remove call to folio_index()
|
||
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Linus Torvalds
|
70e7730c2a |
vfs-6.13.misc
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Merge tag 'vfs-6.13.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull misc vfs updates from Christian Brauner:
"Features:
- Fixup and improve NLM and kNFSD file lock callbacks
Last year both GFS2 and OCFS2 had some work done to make their
locking more robust when exported over NFS. Unfortunately, part of
that work caused both NLM (for NFS v3 exports) and kNFSD (for
NFSv4.1+ exports) to no longer send lock notifications to clients
This in itself is not a huge problem because most NFS clients will
still poll the server in order to acquire a conflicted lock
It's important for NLM and kNFSD that they do not block their
kernel threads inside filesystem's file_lock implementations
because that can produce deadlocks. We used to make sure of this by
only trusting that posix_lock_file() can correctly handle blocking
lock calls asynchronously, so the lock managers would only setup
their file_lock requests for async callbacks if the filesystem did
not define its own lock() file operation
However, when GFS2 and OCFS2 grew the capability to correctly
handle blocking lock requests asynchronously, they started
signalling this behavior with EXPORT_OP_ASYNC_LOCK, and the check
for also trusting posix_lock_file() was inadvertently dropped, so
now most filesystems no longer produce lock notifications when
exported over NFS
Fix this by using an fop_flag which greatly simplifies the problem
and grooms the way for future uses by both filesystems and lock
managers alike
- Add a sysctl to delete the dentry when a file is removed instead of
making it a negative dentry
Commit
|
||
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Linus Torvalds
|
6ac81fd55e |
vfs-6.13.mgtime
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Merge tag 'vfs-6.13.mgtime' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs multigrain timestamps from Christian Brauner:
"This is another try at implementing multigrain timestamps. This time
with significant help from the timekeeping maintainers to reduce the
performance impact.
Thomas provided a base branch that contains the required timekeeping
interfaces for the VFS. It serves as the base for the multi-grain
timestamp work:
- Multigrain timestamps allow the kernel to use fine-grained
timestamps when an inode's attributes is being actively observed
via ->getattr(). With this support, it's possible for a file to get
a fine-grained timestamp, and another modified after it to get a
coarse-grained stamp that is earlier than the fine-grained time. If
this happens then the files can appear to have been modified in
reverse order, which breaks VFS ordering guarantees.
To prevent this, a floor value is maintained for multigrain
timestamps. Whenever a fine-grained timestamp is handed out, record
it, and when later coarse-grained stamps are handed out, ensure
they are not earlier than that value. If the coarse-grained
timestamp is earlier than the fine-grained floor, return the floor
value instead.
The timekeeper changes add a static singleton atomic64_t into
timekeeper.c that is used to keep track of the latest fine-grained
time ever handed out. This is tracked as a monotonic ktime_t value
to ensure that it isn't affected by clock jumps. Because it is
updated at different times than the rest of the timekeeper object,
the floor value is managed independently of the timekeeper via a
cmpxchg() operation, and sits on its own cacheline.
Two new public timekeeper interfaces are added:
(1) ktime_get_coarse_real_ts64_mg() fills a timespec64 with the
later of the coarse-grained clock and the floor time
(2) ktime_get_real_ts64_mg() gets the fine-grained clock value,
and tries to swap it into the floor. A timespec64 is filled
with the result.
- The VFS has always used coarse-grained timestamps when updating the
ctime and mtime after a change. This has the benefit of allowing
filesystems to optimize away a lot metadata updates, down to around
1 per jiffy, even when a file is under heavy writes.
Unfortunately, this has always been an issue when we're exporting
via NFSv3, which relies on timestamps to validate caches. A lot of
changes can happen in a jiffy, so timestamps aren't sufficient to
help the client decide when to invalidate the cache. Even with
NFSv4, a lot of exported filesystems don't properly support a
change attribute and are subject to the same problems with
timestamp granularity. Other applications have similar issues with
timestamps (e.g backup applications).
If we were to always use fine-grained timestamps, that would
improve the situation, but that becomes rather expensive, as the
underlying filesystem would have to log a lot more metadata
updates.
This adds a way to only use fine-grained timestamps when they are
being actively queried. Use the (unused) top bit in
inode->i_ctime_nsec as a flag that indicates whether the current
timestamps have been queried via stat() or the like. When it's set,
we allow the kernel to use a fine-grained timestamp iff it's
necessary to make the ctime show a different value.
This solves the problem of being able to distinguish the timestamp
between updates, but introduces a new problem: it's now possible
for a file being changed to get a fine-grained timestamp. A file
that is altered just a bit later can then get a coarse-grained one
that appears older than the earlier fine-grained time. This
violates timestamp ordering guarantees.
This is where the earlier mentioned timkeeping interfaces help. A
global monotonic atomic64_t value is kept that acts as a timestamp
floor. When we go to stamp a file, we first get the latter of the
current floor value and the current coarse-grained time. If the
inode ctime hasn't been queried then we just attempt to stamp it
with that value.
If it has been queried, then first see whether the current coarse
time is later than the existing ctime. If it is, then we accept
that value. If it isn't, then we get a fine-grained time and try to
swap that into the global floor. Whether that succeeds or fails, we
take the resulting floor time, convert it to realtime and try to
swap that into the ctime.
We take the result of the ctime swap whether it succeeds or fails,
since either is just as valid.
Filesystems can opt into this by setting the FS_MGTIME fstype flag.
Others should be unaffected (other than being subject to the same
floor value as multigrain filesystems)"
* tag 'vfs-6.13.mgtime' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
fs: reduce pointer chasing in is_mgtime() test
tmpfs: add support for multigrain timestamps
btrfs: convert to multigrain timestamps
ext4: switch to multigrain timestamps
xfs: switch to multigrain timestamps
Documentation: add a new file documenting multigrain timestamps
fs: add percpu counters for significant multigrain timestamp events
fs: tracepoints around multigrain timestamp events
fs: handle delegated timestamps in setattr_copy_mgtime
timekeeping: Add percpu counter for tracking floor swap events
timekeeping: Add interfaces for handling timestamps with a floor value
fs: have setattr_copy handle multigrain timestamps appropriately
fs: add infrastructure for multigrain timestamps
|
||
|
Xianglai Li
|
948ccbd950 |
LoongArch: KVM: Add iocsr and mmio bus simulation in kernel
Add iocsr and mmio memory read and write simulation to the kernel. When the VM accesses the device address space through iocsr instructions or mmio, it does not need to return to the qemu user mode but can directly completes the access in the kernel mode. Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn> Signed-off-by: Xianglai Li <lixianglai@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> |
||
|
Christoph Hellwig
|
6975c1a486 |
block: remove the ioprio field from struct request
The request ioprio is only initialized from the first attached bio, so requests without a bio already never set it. Directly use the bio field instead. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Link: https://lore.kernel.org/r/20241112170050.1612998-3-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk> |
||
|
Vlastimil Babka
|
9b5c87d479 |
mm: mmap_lock: check trace_mmap_lock_$type_enabled() instead of regcount
Since
|
||
|
David Howells
|
8b9a7bd4d6 |
rxrpc: Add a tracepoint for aborts being proposed
Add a tracepoint to rxrpc to trace the proposal of an abort. The abort is performed asynchronously by the I/O thread. Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: Simon Horman <horms@kernel.org> cc: linux-afs@lists.infradead.org Link: https://patch.msgid.link/726356.1730898045@warthog.procyon.org.uk Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Filipe Manana
|
e7fa845010 |
btrfs: rename extent map shrinker members from struct btrfs_fs_info
The names for the members of struct btrfs_fs_info related to the extent map shrinker are a bit too long, so rename them to be shorter by replacing the "extent_map_" prefix with the "em_" prefix. Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
||
|
Filipe Manana
|
70a5f9e266 |
btrfs: simplify tracking progress for the extent map shrinker
Now that the extent map shrinker can only be run by a single task (as a work queue item) there is no need to keep the progress of the shrinker protected by a spinlock and passing the progress to trace events as parameters. So remove the lock and simplify the arguments for the trace events. Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
||
|
Dr. David Alan Gilbert
|
b628c13951 |
btrfs: remove unused btrfs_try_tree_write_lock()
btrfs_try_tree_write_lock() has been unused since commit
|
||
|
Filipe Manana
|
c28b97f53b |
btrfs: qgroups: remove bytenr field from struct btrfs_qgroup_extent_record
Now that we track qgroup extent records in a xarray we don't need to have a "bytenr" field in struct btrfs_qgroup_extent_record, since we can get it from the index of the record in the xarray. So remove the field and grab the bytenr from either the index key or any other place where it's available (delayed refs). This reduces the size of struct btrfs_qgroup_extent_record from 40 bytes down to 32 bytes, meaning that we now can store 128 instances of this structure instead of 102 per 4K page. Reviewed-by: Qu Wenruo <wqu@suse.com> Signed-off-by: Filipe Manana <fdmanana@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
||
|
JP Kobryn
|
f914ac96ee |
memcg: add flush tracepoint
This tracepoint gives visibility on how often the flushing of memcg stats occurs and contains info on whether it was forced, skipped, and the value of stats updated. It can help with understanding how readers are affected by having to perform the flush, and the effectiveness of the flush by inspecting the number of stats updated. Paired with the recently added tracepoints for tracing rstat updates, it can also help show correlation where stats exceed thresholds frequently. Link: https://lkml.kernel.org/r/20241029021106.25587-3-inwardvessel@gmail.com Signed-off-by: JP Kobryn <inwardvessel@gmail.com> Reviewed-by: Yosry Ahmed <yosryahmed@google.com> Acked-by: Shakeel Butt <shakeel.butt@linux.dev> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Jeff Layton
|
93970b6a14 |
sunrpc: remove newlines from tracepoints
Tracepoint strings don't require newlines (and in fact, they are undesirable). Signed-off-by: Jeff Layton <jlayton@kernel.org> Acked-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> |
||
|
Linus Torvalds
|
bfc64d9b7e |
Including fixes from can and netfilter.
Things are slowing down quite a bit, mostly driver fixes here.
No known ongoing investigations.
Current release - new code bugs:
- eth: ti: am65-cpsw:
- fix multi queue Rx on J7
- fix warning in am65_cpsw_nuss_remove_rx_chns()
Previous releases - regressions:
- mptcp: do not require admin perm to list endpoints, got missed
in a refactoring
- mptcp: use sock_kfree_s instead of kfree
Previous releases - always broken:
- sctp: properly validate chunk size in sctp_sf_ootb() fix OOB access
- virtio_net: make RSS interact properly with queue number
- can: mcp251xfd: mcp251xfd_get_tef_len(): fix length calculation
- can: mcp251xfd: mcp251xfd_ring_alloc(): fix coalescing configuration
when switching CAN modes
Misc:
- revert earlier hns3 fixes, they were ignoring IOMMU abstractions
and need to be reworked
- can: {cc770,sja1000}_isa: allow building on x86_64
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from can and netfilter.
Things are slowing down quite a bit, mostly driver fixes here. No
known ongoing investigations.
Current release - new code bugs:
- eth: ti: am65-cpsw:
- fix multi queue Rx on J7
- fix warning in am65_cpsw_nuss_remove_rx_chns()
Previous releases - regressions:
- mptcp: do not require admin perm to list endpoints, got missed in a
refactoring
- mptcp: use sock_kfree_s instead of kfree
Previous releases - always broken:
- sctp: properly validate chunk size in sctp_sf_ootb() fix OOB access
- virtio_net: make RSS interact properly with queue number
- can: mcp251xfd: mcp251xfd_get_tef_len(): fix length calculation
- can: mcp251xfd: mcp251xfd_ring_alloc(): fix coalescing
configuration when switching CAN modes
Misc:
- revert earlier hns3 fixes, they were ignoring IOMMU abstractions
and need to be reworked
- can: {cc770,sja1000}_isa: allow building on x86_64"
* tag 'net-6.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (42 commits)
drivers: net: ionic: add missed debugfs cleanup to ionic_probe() error path
net/smc: do not leave a dangling sk pointer in __smc_create()
rxrpc: Fix missing locking causing hanging calls
net/smc: Fix lookup of netdev by using ib_device_get_netdev()
net: arc: rockchip: fix emac mdio node support
net: arc: fix the device for dma_map_single/dma_unmap_single
virtio_net: Update rss when set queue
virtio_net: Sync rss config to device when virtnet_probe
virtio_net: Add hash_key_length check
virtio_net: Support dynamic rss indirection table size
netfilter: nf_tables: wait for rcu grace period on net_device removal
net: stmmac: Fix unbalanced IRQ wake disable warning on single irq case
net: vertexcom: mse102x: Fix possible double free of TX skb
mptcp: use sock_kfree_s instead of kfree
mptcp: no admin perm to list endpoints
net: phy: ti: add PHY_RST_AFTER_CLK_EN flag
net: ethernet: ti: am65-cpsw: fix warning in am65_cpsw_nuss_remove_rx_chns()
net: ethernet: ti: am65-cpsw: Fix multi queue Rx on J7
net: hns3: fix kernel crash when uninstalling driver
Revert "Merge branch 'there-are-some-bugfix-for-the-hns3-ethernet-driver'"
...
|
||
|
David Howells
|
fc9de52de3 |
rxrpc: Fix missing locking causing hanging calls
If a call gets aborted (e.g. because kafs saw a signal) between it being
queued for connection and the I/O thread picking up the call, the abort
will be prioritised over the connection and it will be removed from
local->new_client_calls by rxrpc_disconnect_client_call() without a lock
being held. This may cause other calls on the list to disappear if a race
occurs.
Fix this by taking the client_call_lock when removing a call from whatever
list its ->wait_link happens to be on.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: linux-afs@lists.infradead.org
Reported-by: Marc Dionne <marc.dionne@auristor.com>
Fixes:
|
||
|
Jaewon Kim
|
1f2d03cc53 |
vmscan: add a vmscan event for reclaim_pages
reclaim_folio_list uses a dummy reclaim_stat and is not being used. To know the memory stat, add a new trace event. This is useful how how many pages are not reclaimed or why. This is an example: mm_vmscan_reclaim_pages: nid=0 nr_scanned=112 nr_reclaimed=112 nr_dirty=0 nr_writeback=0 nr_congested=0 nr_immediate=0 nr_activate_anon=0 nr_activate_file=0 nr_ref_keep=0 nr_unmap_fail=0 Currently reclaim_folio_list is only called by reclaim_pages, and reclaim_pages is used by damon and madvise. In the latest Android, reclaim_pages is also used by shmem to reclaim all pages in a address_space. [jaewon31.kim@samsung.com: use sc.nr_scanned rather than new counting] Link: https://lkml.kernel.org/r/20241016143227.961162-1-jaewon31.kim@samsung.com Link: https://lkml.kernel.org/r/20241011124928.1224813-1-jaewon31.kim@samsung.com Signed-off-by: Jaewon Kim <jaewon31.kim@samsung.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Jaewon Kim <jaewon31.kim@samsung.com> Cc: Kalesh Singh <kaleshsingh@google.com> Cc: Minchan Kim <minchan@kernel.org> Cc: SeongJae Park <sj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Shakeel Butt
|
0aa3ef3637 |
memcg: add tracing for memcg stat updates
The memcg stats are maintained in rstat infrastructure which provides very fast updates side and reasonable read side. However memcg added plethora of stats and made the read side, which is cgroup rstat flush, very slow. To solve that, threshold was added in the memcg stats read side i.e. no need to flush the stats if updates are within the threshold. This threshold based improvement worked for sometime but more stats were added to memcg and also the read codepath was getting triggered in the performance sensitive paths which made threshold based ratelimiting ineffective. We need more visibility into the hot and cold stats i.e. stats with a lot of updates. Let's add trace to get that visibility. [shakeel.butt@linux.dev: use unsigned long type for memcg_rstat_events, per Yosry] Link: https://lkml.kernel.org/r/20241015213721.3804209-1-shakeel.butt@linux.dev Link: https://lkml.kernel.org/r/20241010003550.3695245-1-shakeel.butt@linux.dev Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev> Acked-by: Roman Gushchin <roman.gushchin@linux.dev> Reviewed-by: Yosry Ahmed <yosryahmed@google.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: T.J. Mercier <tjmercier@google.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Muchun Song <songmuchun@bytedance.com> Cc: JP Kobryn <inwardvessel@gmail.com> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Alice Ryhl
|
91d39024e1 |
rust: samples: add tracepoint to Rust sample
This updates the Rust printing sample to invoke a tracepoint. This ensures that we have a user in-tree from the get-go even though the patch is being merged before its real user. Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Josh Poimboeuf <jpoimboe@kernel.org> Cc: Jason Baron <jbaron@akamai.com> Cc: Ard Biesheuvel <ardb@kernel.org> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Alex Gaynor <alex.gaynor@gmail.com> Cc: Wedson Almeida Filho <wedsonaf@gmail.com> Cc: Gary Guo <gary@garyguo.net> Cc: " =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= " <bjorn3_gh@protonmail.com> Cc: Benno Lossin <benno.lossin@proton.me> Cc: Andreas Hindborg <a.hindborg@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Uros Bizjak <ubizjak@gmail.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Marc Zyngier <maz@kernel.org> Cc: Oliver Upton <oliver.upton@linux.dev> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Fuad Tabba <tabba@google.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Anup Patel <apatel@ventanamicro.com> Cc: Andrew Jones <ajones@ventanamicro.com> Cc: Alexandre Ghiti <alexghiti@rivosinc.com> Cc: Conor Dooley <conor.dooley@microchip.com> Cc: Samuel Holland <samuel.holland@sifive.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: WANG Xuerui <kernel@xen0n.name> Cc: Bibo Mao <maobibo@loongson.cn> Cc: Tiezhu Yang <yangtiezhu@loongson.cn> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Tianrui Zhao <zhaotianrui@loongson.cn> Link: https://lore.kernel.org/20241030-tracepoint-v12-3-eec7f0f8ad22@google.com Reviewed-by: Boqun Feng <boqun.feng@gmail.com> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Linus Torvalds
|
d56239a82e |
vfs-6.12-rc6.fixes
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Merge tag 'vfs-6.12-rc6.fixes' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs
Pull filesystem fixes from Christian Brauner:
"VFS:
- Fix copy_page_from_iter_atomic() if KMAP_LOCAL_FORCE_MAP=y is set
- Add a get_tree_bdev_flags() helper that allows to modify e.g.,
whether errors are logged into the filesystem context during
superblock creation. This is used by erofs to fix a userspace
regression where an error is currently logged when its used on a
regular file which is an new allowed mode in erofs.
netfs:
- Fix the sysfs debug path in the documentation.
- Fix iov_iter_get_pages*() for folio queues by skipping the page
extracation if we're at the end of a folio.
afs:
- Fix moving subdirectories to different parent directory.
autofs:
- Fix handling of AUTOFS_DEV_IOCTL_TIMEOUT_CMD ioctl in
validate_dev_ioctl(). The actual ioctl number, not the ioctl
command needs to be checked for autofs"
* tag 'vfs-6.12-rc6.fixes' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs:
iov_iter: fix copy_page_from_iter_atomic() if KMAP_LOCAL_FORCE_MAP
autofs: fix thinko in validate_dev_ioctl()
iov_iter: Fix iov_iter_get_pages*() for folio_queue
afs: Fix missing subdir edit when renamed between parent dirs
doc: correcting the debug path for cachefiles
erofs: use get_tree_bdev_flags() to avoid misleading messages
fs/super.c: introduce get_tree_bdev_flags()
|
||
|
Avadhut Naik
|
d4fca1358e |
x86/MCE/AMD: Add support for new MCA_SYND{1,2} registers
Starting with Zen4, AMD's Scalable MCA systems incorporate two new registers: MCA_SYND1 and MCA_SYND2. These registers will include supplemental error information in addition to the existing MCA_SYND register. The data within these registers is considered valid if MCA_STATUS[SyndV] is set. Userspace error decoding tools like rasdaemon gather related hardware error information through the tracepoints. Therefore, export these two registers through the mce_record tracepoint so that tools like rasdaemon can parse them and output the supplemental error information like FRU text contained in them. [ bp: Massage. ] Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com> Signed-off-by: Avadhut Naik <avadhut.naik@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com> Link: https://lore.kernel.org/r/20241022194158.110073-4-avadhut.naik@amd.com |
||
|
Avadhut Naik
|
750fd23926 |
x86/mce: Add wrapper for struct mce to export vendor specific info
Currently, exporting new additional machine check error information involves adding new fields for the same at the end of the struct mce. This additional information can then be consumed through mcelog or tracepoint. However, as new MSRs are being added (and will be added in the future) by CPU vendors on their newer CPUs with additional machine check error information to be exported, the size of struct mce will balloon on some CPUs, unnecessarily, since those fields are vendor-specific. Moreover, different CPU vendors may export the additional information in varying sizes. The problem particularly intensifies since struct mce is exposed to userspace as part of UAPI. It's bloating through vendor-specific data should be avoided to limit the information being sent out to userspace. Add a new structure mce_hw_err to wrap the existing struct mce. The same will prevent its ballooning since vendor-specifc data, if any, can now be exported through a union within the wrapper structure and through __dynamic_array in mce_record tracepoint. Furthermore, new internal kernel fields can be added to the wrapper struct without impacting the user space API. [ bp: Restore reverse x-mas tree order of function vars declarations. ] Suggested-by: Borislav Petkov (AMD) <bp@alien8.de> Signed-off-by: Avadhut Naik <avadhut.naik@amd.com> Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com> Link: https://lore.kernel.org/r/20241022194158.110073-2-avadhut.naik@amd.com |
||
|
Pavel Begunkov
|
2946f08ae9 |
io_uring: clean up cqe trace points
We have too many helpers posting CQEs, instead of tracing completion events before filling in a CQE and thus having to pass all the data, set the CQE first, pass it to the tracing helper and let it extract everything it needs. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/b83c1ca9ee5aed2df0f3bb743bf5ed699cce4c86.1729267437.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk> |
||
|
Sean Anderson
|
68b6dbf1f4 |
dma-mapping: trace more error paths
It can be surprising to the user if DMA functions are only traced on success. On failure, it can be unclear what the source of the problem is. Fix this by tracing all functions even when they fail. Cases where we BUG/WARN are skipped, since those should be sufficiently noisy already. Signed-off-by: Sean Anderson <sean.anderson@linux.dev> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Christoph Hellwig <hch@lst.de> |
||
|
Sean Anderson
|
c4484ab86e |
dma-mapping: use trace_dma_alloc for dma_alloc* instead of using trace_dma_map
In some cases, we use trace_dma_map to trace dma_alloc* functions. This generally follows dma_debug. However, this does not record all of the relevant information for allocations, such as GFP flags. Create new dma_alloc tracepoints for these functions. Note that while dma_alloc_noncontiguous may allocate discontiguous pages (from the CPU's point of view), the device will only see one contiguous mapping. Therefore, we just need to trace dma_addr and size. Signed-off-by: Sean Anderson <sean.anderson@linux.dev> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Christoph Hellwig <hch@lst.de> |
||
|
Sean Anderson
|
3afff779a7 |
dma-mapping: trace dma_alloc/free direction
In preparation for using these tracepoints in a few more places, trace the DMA direction as well. For coherent allocations this is always bidirectional. Signed-off-by: Sean Anderson <sean.anderson@linux.dev> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Christoph Hellwig <hch@lst.de> |
||
|
Sean Anderson
|
5af5fc895f |
dma-mapping: use macros to define events in a class
Use a macro to avoid repeating the parameters and arguments for each event in a class. Signed-off-by: Sean Anderson <sean.anderson@linux.dev> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Christoph Hellwig <hch@lst.de> |
||
|
Uwe Kleine-König
|
acf2b31489 |
pwm: Support for duty_offset
Support a new abstraction for pwm configuration that allows to specify
the time between start of period and the raising edge of the signal
("duty offset").
This is used in a patch series by Trevor Gamblin for triggering an ADC
conversion and afterwards read out the result. See
https://lore.kernel.org/linux-iio/20240909-ad7625_r1-v5-0-60a397768b25@baylibre.com/
for more details.
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Merge tag 'pwm/duty_offset-for-6.13-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux
pwm: Support for duty_offset
Support a new abstraction for pwm configuration that allows to specify
the time between start of period and the raising edge of the signal
("duty offset").
This is used in a patch series by Trevor Gamblin for triggering an ADC
conversion and afterwards read out the result. See
https://lore.kernel.org/linux-iio/20240909-ad7625_r1-v5-0-60a397768b25@baylibre.com/
for more details.
|
||
|
David Howells
|
247d65fb12
|
afs: Fix missing subdir edit when renamed between parent dirs
When rename moves an AFS subdirectory between parent directories, the
subdir also needs a bit of editing: the ".." entry needs updating to point
to the new parent (though I don't make use of the info) and the DV needs
incrementing by 1 to reflect the change of content. The server also sends
a callback break notification on the subdirectory if we have one, but we
can take care of recovering the promise next time we access the subdir.
This can be triggered by something like:
mount -t afs %example.com:xfstest.test20 /xfstest.test/
mkdir /xfstest.test/{aaa,bbb,aaa/ccc}
touch /xfstest.test/bbb/ccc/d
mv /xfstest.test/{aaa/ccc,bbb/ccc}
touch /xfstest.test/bbb/ccc/e
When the pathwalk for the second touch hits "ccc", kafs spots that the DV
is incorrect and downloads it again (so the fix is not critical).
Fix this, if the rename target is a directory and the old and new
parents are different, by:
(1) Incrementing the DV number of the target locally.
(2) Editing the ".." entry in the target to refer to its new parent's
vnode ID and uniquifier.
Link: https://lore.kernel.org/r/3340431.1729680010@warthog.procyon.org.uk
Fixes:
|
||
|
Linus Torvalds
|
7166c32651 |
vfs-6.12-rc5.fixes
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Merge tag 'vfs-6.12-rc5.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs fixes from Christian Brauner:
"afs:
- Fix a lock recursion in afs_wake_up_async_call() on ->notify_lock
netfs:
- Drop the references to a folio immediately after the folio has been
extracted to prevent races with future I/O collection
- Fix a documenation build error
- Downgrade the i_rwsem for buffered writes to fix a cifs reported
performance regression when switching to netfslib
vfs:
- Explicitly return -E2BIG from openat2() if the specified size is
unexpectedly large. This aligns openat2() with other extensible
struct based system calls
- When copying a mount namespace ensure that we only try to remove
the new copy from the mount namespace rbtree if it has already been
added to it
nilfs:
- Clear the buffer delay flag when clearing the buffer state clags
when a buffer head is discarded to prevent a kernel OOPs
ocfs2:
- Fix an unitialized value warning in ocfs2_setattr()
proc:
- Fix a kernel doc warning"
* tag 'vfs-6.12-rc5.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
proc: Fix W=1 build kernel-doc warning
afs: Fix lock recursion
fs: Fix uninitialized value issue in from_kuid and from_kgid
fs: don't try and remove empty rbtree node
netfs: Downgrade i_rwsem for a buffered write
nilfs2: fix kernel bug due to missing clearing of buffer delay flag
openat2: explicitly return -E2BIG for (usize > PAGE_SIZE)
netfs: fix documentation build error
netfs: In readahead, put the folio refs as soon extracted
|
||
|
Linus Torvalds
|
10e93e1900 |
dma-mapping fix for Linux 6.12
Just another small tracing fix from Sean. -----BEGIN PGP SIGNATURE----- iQI/BAABCgApFiEEgdbnc3r/njty3Iq9D55TZVIEUYMFAmcUhhoLHGhjaEBsc3Qu ZGUACgkQD55TZVIEUYPzww//XpnJtQ2glWj9MZAbrPAHsBooazaIae1wfxPXCb9u EzaookDsTZhVtS0buSH9+EcNC5fWsr7Q7wyazx4cmGl6wOdHZ6mq+YbpxGQmhgWe MHDXu/X+rCRsa4cU5X8LUCjWVpKsu0kQE2B3E7M6cYfCWH9r1r9jaW0uXxdTQRWf Yi6W43cL/G946aT76wTspFrCfBqLgxypuTPGgehHpbF99sC/eJ6YHzGkOxc+mZ/5 AatMB/npW8Y0G38yScp6gJZ4XaetJ6hflXoFN1pR7ehDggmZAjM/WfPwFlqZgjbk sVL0GjLuE4kbLnXIWX7GzzY/sXlUbebIKkAiYw3uqeo3KchU8/pA2Cqb9qWzdQmf FkMJQO7rgj7BvlJnxccDVAZYedkoywdj4Jw/B8hnm5jF355g4tZDmXm+4A88KtHZ qnz7pBNdfFumyMEJFwUzOAMWyN2ZDdirb3lrDsCXlIV56h4NH60I6D+cAsX9a+94 Qao0xLr72jlk4NNDQShYJgHybCVTMMep3Wjkejg/EEZCxdkkyMpSOZXJeBLlxn80 O2fdRynM5EhG+e28pjFYvU+/zLT0poSRaE+jBfWJLtG9xCFMybWRKtASH7VcaRLQ /kDPR51ZttfNYQscVWi7S+R37VWksPLEbFQHSFDvOcwGKgcnFpllDuwv+o62TuUc eKk= =MnDt -----END PGP SIGNATURE----- Merge tag 'dma-mapping-6.12-2024-10-20' of git://git.infradead.org/users/hch/dma-mapping Pull dma-mapping fix from Christoph Hellwig: "Just another small tracing fix from Sean" * tag 'dma-mapping-6.12-2024-10-20' of git://git.infradead.org/users/hch/dma-mapping: dma-mapping: fix tracing dma_alloc/free with vmalloc'd memory |
||
|
Sean Anderson
|
78b2770c93 |
dma-mapping: fix tracing dma_alloc/free with vmalloc'd memory
Not all virtual addresses have physical addresses, such as if they were
vmalloc'd. Just trace the virtual address instead of trying to trace a
physical address. This aligns with the API, and is good enough to
associate dma_alloc with dma_free.
Fixes:
|
||
|
Yang Shi
|
37f0b47c51 |
mm: khugepaged: fix the arguments order in khugepaged_collapse_file trace point
The "addr" and "is_shmem" arguments have different order in TP_PROTO and
TP_ARGS. This resulted in the incorrect trace result:
text-hugepage-644429 [276] 392092.878683: mm_khugepaged_collapse_file:
mm=0xffff20025d52c440, hpage_pfn=0x200678c00, index=512, addr=1, is_shmem=0,
filename=text-hugepage, nr=512, result=failed
The value of "addr" is wrong because it was treated as bool value, the
type of is_shmem.
Fix the order in TP_PROTO to keep "addr" is before "is_shmem" since the
original patch review suggested this order to achieve best packing.
And use "lx" for "addr" instead of "ld" in TP_printk because address is
typically shown in hex.
After the fix, the trace result looks correct:
text-hugepage-7291 [004] 128.627251: mm_khugepaged_collapse_file:
mm=0xffff0001328f9500, hpage_pfn=0x20016ea00, index=512, addr=0x400000,
is_shmem=0, filename=text-hugepage, nr=512, result=failed
Link: https://lkml.kernel.org/r/20241012011702.1084846-1-yang@os.amperecomputing.com
Fixes:
|
||
|
Christian Brauner
|
b40508ca5d
|
Merge patch series "timekeeping/fs: multigrain timestamp redux"
Jeff Layton <jlayton@kernel.org> says: The VFS has always used coarse-grained timestamps when updating the ctime and mtime after a change. This has the benefit of allowing filesystems to optimize away a lot metadata updates, down to around 1 per jiffy, even when a file is under heavy writes. Unfortunately, this has always been an issue when we're exporting via NFSv3, which relies on timestamps to validate caches. A lot of changes can happen in a jiffy, so timestamps aren't sufficient to help the client decide when to invalidate the cache. Even with NFSv4, a lot of exported filesystems don't properly support a change attribute and are subject to the same problems with timestamp granularity. Other applications have similar issues with timestamps (e.g backup applications). If we were to always use fine-grained timestamps, that would improve the situation, but that becomes rather expensive, as the underlying filesystem would have to log a lot more metadata updates. What we need is a way to only use fine-grained timestamps when they are being actively queried. Use the (unused) top bit in inode->i_ctime_nsec as a flag that indicates whether the current timestamps have been queried via stat() or the like. When it's set, we allow the kernel to use a fine-grained timestamp iff it's necessary to make the ctime show a different value. This solves the problem of being able to distinguish the timestamp between updates, but introduces a new problem: it's now possible for a file being changed to get a fine-grained timestamp. A file that is altered just a bit later can then get a coarse-grained one that appears older than the earlier fine-grained time. This violates timestamp ordering guarantees. To remedy this, keep a global monotonic atomic64_t value that acts as a timestamp floor. When we go to stamp a file, we first get the latter of the current floor value and the current coarse-grained time. If the inode ctime hasn't been queried then we just attempt to stamp it with that value. If it has been queried, then first see whether the current coarse time is later than the existing ctime. If it is, then we accept that value. If it isn't, then we get a fine-grained time and try to swap that into the global floor. Whether that succeeds or fails, we take the resulting floor time, convert it to realtime and try to swap that into the ctime. We take the result of the ctime swap whether it succeeds or fails, since either is just as valid. Filesystems can opt into this by setting the FS_MGTIME fstype flag. Others should be unaffected (other than being subject to the same floor value as multigrain filesystems). * patches from https://lore.kernel.org/r/20241002-mgtime-v10-0-d1c4717f5284@kernel.org: tmpfs: add support for multigrain timestamps btrfs: convert to multigrain timestamps ext4: switch to multigrain timestamps xfs: switch to multigrain timestamps Documentation: add a new file documenting multigrain timestamps fs: add percpu counters for significant multigrain timestamp events fs: tracepoints around multigrain timestamp events fs: handle delegated timestamps in setattr_copy_mgtime fs: have setattr_copy handle multigrain timestamps appropriately fs: add infrastructure for multigrain timestamps Link: https://lore.kernel.org/r/20241002-mgtime-v10-0-d1c4717f5284@kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
Jeff Layton
|
c86e3c4718
|
fs: tracepoints around multigrain timestamp events
Add some tracepoints around various multigrain timestamp events. Reviewed-by: Josef Bacik <josef@toxicpanda.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Tested-by: Randy Dunlap <rdunlap@infradead.org> # documentation bits Signed-off-by: Jeff Layton <jlayton@kernel.org> Link: https://lore.kernel.org/r/20241002-mgtime-v10-6-d1c4717f5284@kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
Mathieu Desnoyers
|
0e6caab8db |
tracing: Declare system call tracepoints with TRACE_EVENT_SYSCALL
In preparation for allowing system call tracepoints to handle page faults, introduce TRACE_EVENT_SYSCALL to declare the sys_enter/sys_exit tracepoints. Move the common code between __DECLARE_TRACE and __DECLARE_TRACE_SYSCALL into __DECLARE_TRACE_COMMON. This change is not meant to alter the generated code, and only prepares the following modifications. Cc: Michael Jeanson <mjeanson@efficios.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Yonghong Song <yhs@fb.com> Cc: Paul E. McKenney <paulmck@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Andrii Nakryiko <andrii.nakryiko@gmail.com> Cc: bpf@vger.kernel.org Cc: Joel Fernandes <joel@joelfernandes.org> Link: https://lore.kernel.org/20241009010718.2050182-2-mathieu.desnoyers@efficios.com Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Steven Rostedt
|
48bcda6848 |
tracing: Remove definition of trace_*_rcuidle()
The trace_*_rcuidle() variant of a tracepoint was to handle places where a tracepoint was located but RCU was not "watching". All those locations have been removed, and RCU should be watching where all tracepoints are located. We can now remove the trace_*_rcuidle() variant. Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Joel Fernandes <joel@joelfernandes.org> Link: https://lore.kernel.org/20241003181629.36209057@gandalf.local.home Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
David Howells
|
796a404964
|
netfs: In readahead, put the folio refs as soon extracted
netfslib currently defers dropping the ref on the folios it obtains during
readahead to after it has started I/O on the basis that we can do it whilst
we wait for the I/O to complete, but this runs the risk of the I/O
collection racing with this in future.
Furthermore, Matthew Wilcox strongly suggests that the refs should be
dropped immediately, as readahead_folio() does (netfslib is using
__readahead_batch() which doesn't drop the refs).
Fixes:
|
||
|
Christian Brauner
|
9b8e8091c8
|
Merge patch series "Random netfs folio fixes"
Matthew Wilcox (Oracle) <willy@infradead.org> says: A few minor fixes; nothing earth-shattering. Matthew Wilcox (Oracle) (3): netfs: Remove call to folio_index() netfs: Fix a few minor bugs in netfs_page_mkwrite() netfs: Remove unnecessary references to pages Link: https://lore.kernel.org/r/20241005182307.3190401-1-willy@infradead.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
Matthew Wilcox (Oracle)
|
fcd4904e2f
|
netfs: Remove call to folio_index()
Calling folio_index() is pointless overhead; directly dereferencing folio->index is fine. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Link: https://lore.kernel.org/r/20241005182307.3190401-2-willy@infradead.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
Linus Torvalds
|
79eb2c07af |
for-6.12-rc1-tag
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||
|
Christian Brauner
|
2b2b1a20db
|
Merge patch series "Introduce tracepoint for hugetlbfs"
Hongbo Li <lihongbo22@huawei.com> says:
Add some basic tracepoints for debugging hugetlbfs: {alloc, free,
evict}_inode, setattr and fallocate.
* patches from https://lore.kernel.org/r/20240829064110.67884-1-lihongbo22@huawei.com:
hugetlbfs: use tracepoints in hugetlbfs functions.
hugetlbfs: support tracepoint
Link: https://lore.kernel.org/r/20240829064110.67884-1-lihongbo22@huawei.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
|
||
|
Filipe Manana
|
50c6f6e680 |
btrfs: tracepoints: end assignment with semicolon at btrfs_qgroup_extent event class
While running checkpatch.pl against a patch that modifies the btrfs_qgroup_extent event class, it complained about using a comma instead of a semicolon: $ ./scripts/checkpatch.pl qgroups/0003-btrfs-qgroups-remove-bytenr-field-from-struct-btrfs_.patch WARNING: Possible comma where semicolon could be used #215: FILE: include/trace/events/btrfs.h:1720: + __entry->bytenr = bytenr, __entry->num_bytes = rec->num_bytes; total: 0 errors, 1 warnings, 184 lines checked So replace the comma with a semicolon to silence checkpatch and possibly other tools. It also makes the code consistent with the rest. Reviewed-by: Qu Wenruo <wqu@suse.com> Signed-off-by: Filipe Manana <fdmanana@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
||
|
Linus Torvalds
|
a5f24c7955 |
vfs-6.12-rc2.fixes
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Merge tag 'vfs-6.12-rc2.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs fixes from Christian Brauner:
"afs:
- Fix setting of the server responding flag
- Remove unused struct afs_address_list and afs_put_address_list()
function
- Fix infinite loop because of unresponsive servers
- Ensure that afs_retry_request() function is correctly added to the
afs_req_ops netfs operations table
netfs:
- Fix netfs_folio tracepoint handling to handle NULL mappings
- Add a missing folio_queue API documentation
- Ensure that netfs_write_folio() correctly advances the iterator via
iov_iter_advance()
- Fix a dentry leak during concurrent cull and cookie lookup
operations in cachefiles
pidfs:
- Correctly handle accessing another task's pid namespace"
* tag 'vfs-6.12-rc2.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
netfs: Fix the netfs_folio tracepoint to handle NULL mapping
netfs: Add folio_queue API documentation
netfs: Advance iterator correctly rather than jumping it
afs: Fix the setting of the server responding flag
afs: Remove unused struct and function prototype
afs: Fix possible infinite loop with unresponsive servers
pidfs: check for valid pid namespace
afs: Fix missing wire-up of afs_retry_request()
cachefiles: fix dentry leak in cachefiles_open_file()
|
||
|
David Howells
|
f801850bc2
|
netfs: Fix the netfs_folio tracepoint to handle NULL mapping
Fix the netfs_folio tracepoint to handle folios that have a NULL mapping
pointer. In such a case, just substitute a zero inode number.
Fixes:
|
||
|
Linus Torvalds
|
b81b78dacc |
dma-mapping fixes for Linux 6.12
- handle chained SGLs in the new tracing code (Christoph Hellwig) -----BEGIN PGP SIGNATURE----- iQI/BAABCgApFiEEgdbnc3r/njty3Iq9D55TZVIEUYMFAmb47voLHGhjaEBsc3Qu ZGUACgkQD55TZVIEUYMqAw//TCBIiBNBwjWipVBXmvizu0MaB+PU8ZOjXZoeEdlN WeGSPvuW2lWJxjBblPcFA3MFO9pztO9E94dayu5/jV5QP4G+EzyCJDoZOQu8iHYX YzaIgkt0W+vKEFmvAqfrHuPHHO0mZ00qaBmj/r+cayWqBBvWPLbj7kU7+sFVG4it lP2QGGYGV6Ryvkwcft+Got4oIKmyuTsS4i4Cq17WNuhAxDMZftnVPIuUJ9Q00xza zDSwKgAOoPqaf3r026MqahpEECAQP0S7uqH10I+MJe7AbREbO7GSHcx4YWDhmyLd KFJ+Wv67H8voCsvdH76zANVLE6S5YMyAwMAJSRQxuVSjqrIM0vyyQ4jeRZCHibva NvYnv/xRRF+BKyNthNAz1m69K3y8UV5gvP/otezHInGd5/b527UoLXdFl+wQvdJm aJwCYSFgQbAsoAh4kWCUmYXGwc1h6aQQ3pcHD118yf9Glzjl4vwHOyF12GigfCdQ cbNo+ceacO3rg/H85zMl8OCMtnPwAlNAU+16MY0JwefKKs6rmRyQeTreQKjjdhTm /0FVKq1PXJeOdMBqSnrN/tJBIEJxtQlUqE7mx7B2OnczvNpaO4THGlo181nnzPPd HTb9fXzBJeSSbDGWF8W6MZIleDj+s4V5Z6Qqi0cW9F7Yn4dCw9ghBBkDZtcm+hkb +q0= =zjTS -----END PGP SIGNATURE----- Merge tag 'dma-mapping-6.12-2024-09-29' of git://git.infradead.org/users/hch/dma-mapping Pull dma-mapping fix from Christoph Hellwig: - handle chained SGLs in the new tracing code (Christoph Hellwig) * tag 'dma-mapping-6.12-2024-09-29' of git://git.infradead.org/users/hch/dma-mapping: dma-mapping: fix DMA API tracing for chained scatterlists |
||
|
Uwe Kleine-König
|
1afd01db1a |
pwm: Add tracing for waveform callbacks
This adds trace events for the recently introduced waveform callbacks. With the introduction of some helper macros consistency among the different events is ensured. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://lore.kernel.org/r/1d71879b0de3bf01459c7a9d0f040d43eb5ace56.1726819463.git.u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org> |
||
|
Christoph Hellwig
|
bfc4a245a7 |
dma-mapping: fix DMA API tracing for chained scatterlists
scatterlist allocations can be chained, and thus all iterations need to
use the chain-aware iterators. Switch the newly added tracing to use the
proper iterators so that they work with chained scatterlists.
Fixes:
|
||
|
Linus Torvalds
|
79952bdcbc |
f2fs-6.12-rc1
In this series, the main changes include 1) converting major IO paths to use
folio, and 2) adding various knobs to control GC more flexibly for Zoned
devices. In addition, there are several patches to address corner cases of
atomic file operations and better support for file pinning on zoned device.
Enhancement:
- add knobs to tune foreground/background GCs for Zoned devices
- convert IO paths to use folio
- reduce expensive checkpoint trigger frequency
- allow F2FS_IPU_NOCACHE for pinned file
- forcibly migrate to secure space for zoned device file pinning
- get rid of buffer_head use
- add write priority option based on zone UFS
- get rid of online repair on corrupted directory
Bug fix:
- fix to don't panic system for no free segment fault injection
- fix to don't set SB_RDONLY in f2fs_handle_critical_error()
- avoid unused block when dio write in LFS mode
- compress: don't redirty sparse cluster during {,de}compress
- check discard support for conventional zones
- atomic: prevent atomic file from being dirtied before commit
- atomic: fix to check atomic_file in f2fs ioctl interfaces
- atomic: fix to forbid dio in atomic_file
- atomic: fix to truncate pagecache before on-disk metadata truncation
- atomic: create COW inode from parent dentry
- atomic: fix to avoid racing w/ GC
- atomic: require FMODE_WRITE for atomic write ioctls
- fix to wait page writeback before setting gcing flag
- fix to avoid racing in between read and OPU dio write, dio completion
- fix several potential integer overflows in file offsets and dir_block_index
- fix to avoid use-after-free in f2fs_stop_gc_thread()
As usual, there are several code clean-ups and refactorings.
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Merge tag 'f2fs-for-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim:
"The main changes include converting major IO paths to use folio, and
adding various knobs to control GC more flexibly for Zoned devices.
In addition, there are several patches to address corner cases of
atomic file operations and better support for file pinning on zoned
device.
Enhancement:
- add knobs to tune foreground/background GCs for Zoned devices
- convert IO paths to use folio
- reduce expensive checkpoint trigger frequency
- allow F2FS_IPU_NOCACHE for pinned file
- forcibly migrate to secure space for zoned device file pinning
- get rid of buffer_head use
- add write priority option based on zone UFS
- get rid of online repair on corrupted directory
Bug fixes:
- fix to don't panic system for no free segment fault injection
- fix to don't set SB_RDONLY in f2fs_handle_critical_error()
- avoid unused block when dio write in LFS mode
- compress: don't redirty sparse cluster during {,de}compress
- check discard support for conventional zones
- atomic: prevent atomic file from being dirtied before commit
- atomic: fix to check atomic_file in f2fs ioctl interfaces
- atomic: fix to forbid dio in atomic_file
- atomic: fix to truncate pagecache before on-disk metadata truncation
- atomic: create COW inode from parent dentry
- atomic: fix to avoid racing w/ GC
- atomic: require FMODE_WRITE for atomic write ioctls
- fix to wait page writeback before setting gcing flag
- fix to avoid racing in between read and OPU dio write, dio completion
- fix several potential integer overflows in file offsets and dir_block_index
- fix to avoid use-after-free in f2fs_stop_gc_thread()
As usual, there are several code clean-ups and refactorings"
* tag 'f2fs-for-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (60 commits)
f2fs: allow F2FS_IPU_NOCACHE for pinned file
f2fs: forcibly migrate to secure space for zoned device file pinning
f2fs: remove unused parameters
f2fs: fix to don't panic system for no free segment fault injection
f2fs: fix to don't set SB_RDONLY in f2fs_handle_critical_error()
f2fs: add valid block ratio not to do excessive GC for one time GC
f2fs: create gc_no_zoned_gc_percent and gc_boost_zoned_gc_percent
f2fs: do FG_GC when GC boosting is required for zoned devices
f2fs: increase BG GC migration window granularity when boosted for zoned devices
f2fs: add reserved_segments sysfs node
f2fs: introduce migration_window_granularity
f2fs: make BG GC more aggressive for zoned devices
f2fs: avoid unused block when dio write in LFS mode
f2fs: fix to check atomic_file in f2fs ioctl interfaces
f2fs: get rid of online repaire on corrupted directory
f2fs: prevent atomic file from being dirtied before commit
f2fs: get rid of page->index
f2fs: convert read_node_page() to use folio
f2fs: convert __write_node_page() to use folio
f2fs: convert f2fs_write_data_page() to use folio
...
|
||
|
Linus Torvalds
|
d7dfb07d4d |
firewire updates for v6.12
The batch of changes includes the followwing:
- Replacing tasklet with usual workqueue for isochronous context
- Replacing IDR with XArray
- Utilizing guard macro where possible
- Printing deprecation warning when enabling debug parameter of
firewire-ohci module
Additionally, it includes a single patch for sound subsystem which the
subsystem maintainer acked:
- Switching to nonatomic PCM operation
In FireWire subsystem, tasklet has been used as the bottom half of 1394
OHCi hardIRQ so long. In the recent kernel updates, BH workqueue has
been available, and some developers have proposed replacing tasklet with
BH workqueue. While it is fortunate that developers are still considering
the legacy subsystem, a simple replacement is not necessarily suitable.
As a first step towards dropping tasklet, I've investigated the
feasibility for 1394 OHCI isochronous context, and concluded that usual
workqueue is available. In the context, the batch of packets is processed
in the specific queue, thus the timing jitter caused by task scheduling is
not so critical. Additionally, DMA transmission can be scheduled
per-packet basis, therefore the context can be sleep between the operation
of transmissions. Furthermore, in-kernel protocol implementation involves
some CPU-bound tasks, which can sometimes consumes CPU time so long. These
characteristics suggest that usual workqueue is suitable, through BH
workqueues are not.
The replacement with usual workqueue allows unit drivers to process the
content of packets in non-atomic context. It brings some reliefs to some
drivers in sound subsystem that spin-lock is not mandatory anymore during
isochronous packet processing.
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Merge tag 'firewire-updates-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394
Pull firewire updates from Takashi Sakamoto:
"In the FireWire subsystem, tasklets have been used as the bottom half
of 1394 OHCi hardIRQ. In recent kernel updates, BH workqueues have
become available, and some developers have proposed replacing the
tasklet with a BH workqueue.
As a first step towards dropping tasklet use, the 1394 OHCI
isochronous context can use regular workqueues. In this context, the
batch of packets is processed in the specific queue, thus the timing
jitter caused by task scheduling is not so critical.
Additionally, DMA transmission can be scheduled per-packet basis,
therefore the context can be sleep between the operation of
transmissions. Furthermore, in-kernel protocol implementation involves
some CPU-bound tasks, which can sometimes consumes CPU time so long.
These characteristics suggest that normal workqueues are suitable,
through BH workqueues are not.
The replacement with a workqueue allows unit drivers to process the
content of packets in non-atomic context. It brings some reliefs to
some drivers in sound subsystem that spin-lock is not mandatory
anymore during isochronous packet processing.
Summary:
- Replace tasklet with workqueue for isochronous context
- Replace IDR with XArray
- Utilize guard macro where possible
- Print deprecation warning when enabling debug parameter of
firewire-ohci module
- Switch to nonatomic PCM operation"
* tag 'firewire-updates-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394: (55 commits)
firewire: core: rename cause flag of tracepoints event
firewire: core: update documentation of kernel APIs for flushing completions
firewire: core: add helper function to retire descriptors
Revert "firewire: core: move workqueue handler from 1394 OHCI driver to core function"
Revert "firewire: core: use mutex to coordinate concurrent calls to flush completions"
firewire: core: use mutex to coordinate concurrent calls to flush completions
firewire: core: move workqueue handler from 1394 OHCI driver to core function
firewire: core: fulfill documentation of fw_iso_context_flush_completions()
firewire: core: expose kernel API to schedule work item to process isochronous context
firewire: core: use WARN_ON_ONCE() to avoid superfluous dumps
ALSA: firewire: use nonatomic PCM operation
firewire: core: non-atomic memory allocation for isochronous event to user client
firewire: ohci: operate IT/IR events in sleepable work process instead of tasklet softIRQ
firewire: core: add local API to queue work item to workqueue specific to isochronous contexts
firewire: core: allocate workqueue to handle isochronous contexts in card
firewire: ohci: obsolete direct usage of printk_ratelimit()
firewire: ohci: deprecate debug parameter
firewire: core: update fw_device outside of device_find_child()
firewire: ohci: fix error path to detect initiated reset in TI TSB41BA3D phy
firewire: core/ohci: minor refactoring for computation of configuration ROM size
...
|
||
|
Linus Torvalds
|
18ba603446 |
NFSD 6.12 Release Notes
Notable features of this release include:
- Pre-requisites for automatically determining the RPC server thread
count
- Clean-up and preparation for supporting LOCALIO, which will be
merged via the NFS client tree
- Enhancements and fixes to NFSv4.2 COPY offload
- A new Python-based tool for generating kernel SunRPC XDR encoding
and decoding functions, added as an aid for prototyping features
in protocols based on the Linux kernel's SunRPC implementation.
As always I am grateful to the NFSD contributors, reviewers,
testers, and bug reporters who participated during this cycle.
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Merge tag 'nfsd-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux
Pull nfsd updates from Chuck Lever:
"Notable features of this release include:
- Pre-requisites for automatically determining the RPC server thread
count
- Clean-up and preparation for supporting LOCALIO, which will be
merged via the NFS client tree
- Enhancements and fixes to NFSv4.2 COPY offload
- A new Python-based tool for generating kernel SunRPC XDR encoding
and decoding functions, added as an aid for prototyping features in
protocols based on the Linux kernel's SunRPC implementation
As always I am grateful to the NFSD contributors, reviewers, testers,
and bug reporters who participated during this cycle"
* tag 'nfsd-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (57 commits)
xdrgen: Prevent reordering of encoder and decoder functions
xdrgen: typedefs should use the built-in string and opaque functions
xdrgen: Fix return code checking in built-in XDR decoders
tools: Add xdrgen
nfsd: fix delegation_blocked() to block correctly for at least 30 seconds
nfsd: fix initial getattr on write delegation
nfsd: untangle code in nfsd4_deleg_getattr_conflict()
nfsd: enforce upper limit for namelen in __cld_pipe_inprogress_downcall()
nfsd: return -EINVAL when namelen is 0
NFSD: Wrap async copy operations with trace points
NFSD: Clean up extra whitespace in trace_nfsd_copy_done
NFSD: Record the callback stateid in copy tracepoints
NFSD: Display copy stateids with conventional print formatting
NFSD: Limit the number of concurrent async COPY operations
NFSD: Async COPY result needs to return a write verifier
nfsd: avoid races with wake_up_var()
nfsd: use clear_and_wake_up_bit()
sunrpc: xprtrdma: Use ERR_CAST() to return
NFSD: Annotate struct pnfs_block_deviceaddr with __counted_by()
nfsd: call cache_put if xdr_reserve_space returns NULL
...
|
||
|
Linus Torvalds
|
88264981f2 |
sched_ext: Initial pull request for v6.12
This is the initial pull request of sched_ext. The v7 patchset (https://lkml.kernel.org/r/20240618212056.2833381-1-tj@kernel.org) is applied on top of tip/sched/core + bpf/master as of Jun 18th. tip/sched/core 793a62823d1c ("sched/core: Drop spinlocks on contention iff kernel is preempti ble") bpf/master |
||
|
Linus Torvalds
|
617a814f14 |
ALong with the usual shower of singleton patches, notable patch series in
this pull request are:
"Align kvrealloc() with krealloc()" from Danilo Krummrich. Adds
consistency to the APIs and behaviour of these two core allocation
functions. This also simplifies/enables Rustification.
"Some cleanups for shmem" from Baolin Wang. No functional changes - mode
code reuse, better function naming, logic simplifications.
"mm: some small page fault cleanups" from Josef Bacik. No functional
changes - code cleanups only.
"Various memory tiering fixes" from Zi Yan. A small fix and a little
cleanup.
"mm/swap: remove boilerplate" from Yu Zhao. Code cleanups and
simplifications and .text shrinkage.
"Kernel stack usage histogram" from Pasha Tatashin and Shakeel Butt. This
is a feature, it adds new feilds to /proc/vmstat such as
$ grep kstack /proc/vmstat
kstack_1k 3
kstack_2k 188
kstack_4k 11391
kstack_8k 243
kstack_16k 0
which tells us that 11391 processes used 4k of stack while none at all
used 16k. Useful for some system tuning things, but partivularly useful
for "the dynamic kernel stack project".
"kmemleak: support for percpu memory leak detect" from Pavel Tikhomirov.
Teaches kmemleak to detect leaksage of percpu memory.
"mm: memcg: page counters optimizations" from Roman Gushchin. "3
independent small optimizations of page counters".
"mm: split PTE/PMD PT table Kconfig cleanups+clarifications" from David
Hildenbrand. Improves PTE/PMD splitlock detection, makes powerpc/8xx work
correctly by design rather than by accident.
"mm: remove arch_make_page_accessible()" from David Hildenbrand. Some
folio conversions which make arch_make_page_accessible() unneeded.
"mm, memcg: cg2 memory{.swap,}.peak write handlers" fro David Finkel.
Cleans up and fixes our handling of the resetting of the cgroup/process
peak-memory-use detector.
"Make core VMA operations internal and testable" from Lorenzo Stoakes.
Rationalizaion and encapsulation of the VMA manipulation APIs. With a
view to better enable testing of the VMA functions, even from a
userspace-only harness.
"mm: zswap: fixes for global shrinker" from Takero Funaki. Fix issues in
the zswap global shrinker, resulting in improved performance.
"mm: print the promo watermark in zoneinfo" from Kaiyang Zhao. Fill in
some missing info in /proc/zoneinfo.
"mm: replace follow_page() by folio_walk" from David Hildenbrand. Code
cleanups and rationalizations (conversion to folio_walk()) resulting in
the removal of follow_page().
"improving dynamic zswap shrinker protection scheme" from Nhat Pham. Some
tuning to improve zswap's dynamic shrinker. Significant reductions in
swapin and improvements in performance are shown.
"mm: Fix several issues with unaccepted memory" from Kirill Shutemov.
Improvements to the new unaccepted memory feature,
"mm/mprotect: Fix dax puds" from Peter Xu. Implements mprotect on DAX
PUDs. This was missing, although nobody seems to have notied yet.
"Introduce a store type enum for the Maple tree" from Sidhartha Kumar.
Cleanups and modest performance improvements for the maple tree library
code.
"memcg: further decouple v1 code from v2" from Shakeel Butt. Move more
cgroup v1 remnants away from the v2 memcg code.
"memcg: initiate deprecation of v1 features" from Shakeel Butt. Adds
various warnings telling users that memcg v1 features are deprecated.
"mm: swap: mTHP swap allocator base on swap cluster order" from Chris Li.
Greatly improves the success rate of the mTHP swap allocation.
"mm: introduce numa_memblks" from Mike Rapoport. Moves various disparate
per-arch implementations of numa_memblk code into generic code.
"mm: batch free swaps for zap_pte_range()" from Barry Song. Greatly
improves the performance of munmap() of swap-filled ptes.
"support large folio swap-out and swap-in for shmem" from Baolin Wang.
With this series we no longer split shmem large folios into simgle-page
folios when swapping out shmem.
"mm/hugetlb: alloc/free gigantic folios" from Yu Zhao. Nice performance
improvements and code reductions for gigantic folios.
"support shmem mTHP collapse" from Baolin Wang. Adds support for
khugepaged's collapsing of shmem mTHP folios.
"mm: Optimize mseal checks" from Pedro Falcato. Fixes an mprotect()
performance regression due to the addition of mseal().
"Increase the number of bits available in page_type" from Matthew Wilcox.
Increases the number of bits available in page_type!
"Simplify the page flags a little" from Matthew Wilcox. Many legacy page
flags are now folio flags, so the page-based flags and their
accessors/mutators can be removed.
"mm: store zero pages to be swapped out in a bitmap" from Usama Arif. An
optimization which permits us to avoid writing/reading zero-filled zswap
pages to backing store.
"Avoid MAP_FIXED gap exposure" from Liam Howlett. Fixes a race window
which occurs when a MAP_FIXED operqtion is occurring during an unrelated
vma tree walk.
"mm: remove vma_merge()" from Lorenzo Stoakes. Major rotorooting of the
vma_merge() functionality, making ot cleaner, more testable and better
tested.
"misc fixups for DAMON {self,kunit} tests" from SeongJae Park. Minor
fixups of DAMON selftests and kunit tests.
"mm: memory_hotplug: improve do_migrate_range()" from Kefeng Wang. Code
cleanups and folio conversions.
"Shmem mTHP controls and stats improvements" from Ryan Roberts. Cleanups
for shmem controls and stats.
"mm: count the number of anonymous THPs per size" from Barry Song. Expose
additional anon THP stats to userspace for improved tuning.
"mm: finish isolate/putback_lru_page()" from Kefeng Wang: more folio
conversions and removal of now-unused page-based APIs.
"replace per-quota region priorities histogram buffer with per-context
one" from SeongJae Park. DAMON histogram rationalization.
"Docs/damon: update GitHub repo URLs and maintainer-profile" from SeongJae
Park. DAMON documentation updates.
"mm/vdpa: correct misuse of non-direct-reclaim __GFP_NOFAIL and improve
related doc and warn" from Jason Wang: fixes usage of page allocator
__GFP_NOFAIL and GFP_ATOMIC flags.
"mm: split underused THPs" from Yu Zhao. Improve THP=always policy - this
was overprovisioning THPs in sparsely accessed memory areas.
"zram: introduce custom comp backends API" frm Sergey Senozhatsky. Add
support for zram run-time compression algorithm tuning.
"mm: Care about shadow stack guard gap when getting an unmapped area" from
Mark Brown. Fix up the various arch_get_unmapped_area() implementations
to better respect guard areas.
"Improve mem_cgroup_iter()" from Kinsey Ho. Improve the reliability of
mem_cgroup_iter() and various code cleanups.
"mm: Support huge pfnmaps" from Peter Xu. Extends the usage of huge
pfnmap support.
"resource: Fix region_intersects() vs add_memory_driver_managed()" from
Huang Ying. Fix a bug in region_intersects() for systems with CXL memory.
"mm: hwpoison: two more poison recovery" from Kefeng Wang. Teaches a
couple more code paths to correctly recover from the encountering of
poisoned memry.
"mm: enable large folios swap-in support" from Barry Song. Support the
swapin of mTHP memory into appropriately-sized folios, rather than into
single-page folios.
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Merge tag 'mm-stable-2024-09-20-02-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
"Along with the usual shower of singleton patches, notable patch series
in this pull request are:
- "Align kvrealloc() with krealloc()" from Danilo Krummrich. Adds
consistency to the APIs and behaviour of these two core allocation
functions. This also simplifies/enables Rustification.
- "Some cleanups for shmem" from Baolin Wang. No functional changes -
mode code reuse, better function naming, logic simplifications.
- "mm: some small page fault cleanups" from Josef Bacik. No
functional changes - code cleanups only.
- "Various memory tiering fixes" from Zi Yan. A small fix and a
little cleanup.
- "mm/swap: remove boilerplate" from Yu Zhao. Code cleanups and
simplifications and .text shrinkage.
- "Kernel stack usage histogram" from Pasha Tatashin and Shakeel
Butt. This is a feature, it adds new feilds to /proc/vmstat such as
$ grep kstack /proc/vmstat
kstack_1k 3
kstack_2k 188
kstack_4k 11391
kstack_8k 243
kstack_16k 0
which tells us that 11391 processes used 4k of stack while none at
all used 16k. Useful for some system tuning things, but
partivularly useful for "the dynamic kernel stack project".
- "kmemleak: support for percpu memory leak detect" from Pavel
Tikhomirov. Teaches kmemleak to detect leaksage of percpu memory.
- "mm: memcg: page counters optimizations" from Roman Gushchin. "3
independent small optimizations of page counters".
- "mm: split PTE/PMD PT table Kconfig cleanups+clarifications" from
David Hildenbrand. Improves PTE/PMD splitlock detection, makes
powerpc/8xx work correctly by design rather than by accident.
- "mm: remove arch_make_page_accessible()" from David Hildenbrand.
Some folio conversions which make arch_make_page_accessible()
unneeded.
- "mm, memcg: cg2 memory{.swap,}.peak write handlers" fro David
Finkel. Cleans up and fixes our handling of the resetting of the
cgroup/process peak-memory-use detector.
- "Make core VMA operations internal and testable" from Lorenzo
Stoakes. Rationalizaion and encapsulation of the VMA manipulation
APIs. With a view to better enable testing of the VMA functions,
even from a userspace-only harness.
- "mm: zswap: fixes for global shrinker" from Takero Funaki. Fix
issues in the zswap global shrinker, resulting in improved
performance.
- "mm: print the promo watermark in zoneinfo" from Kaiyang Zhao. Fill
in some missing info in /proc/zoneinfo.
- "mm: replace follow_page() by folio_walk" from David Hildenbrand.
Code cleanups and rationalizations (conversion to folio_walk())
resulting in the removal of follow_page().
- "improving dynamic zswap shrinker protection scheme" from Nhat
Pham. Some tuning to improve zswap's dynamic shrinker. Significant
reductions in swapin and improvements in performance are shown.
- "mm: Fix several issues with unaccepted memory" from Kirill
Shutemov. Improvements to the new unaccepted memory feature,
- "mm/mprotect: Fix dax puds" from Peter Xu. Implements mprotect on
DAX PUDs. This was missing, although nobody seems to have notied
yet.
- "Introduce a store type enum for the Maple tree" from Sidhartha
Kumar. Cleanups and modest performance improvements for the maple
tree library code.
- "memcg: further decouple v1 code from v2" from Shakeel Butt. Move
more cgroup v1 remnants away from the v2 memcg code.
- "memcg: initiate deprecation of v1 features" from Shakeel Butt.
Adds various warnings telling users that memcg v1 features are
deprecated.
- "mm: swap: mTHP swap allocator base on swap cluster order" from
Chris Li. Greatly improves the success rate of the mTHP swap
allocation.
- "mm: introduce numa_memblks" from Mike Rapoport. Moves various
disparate per-arch implementations of numa_memblk code into generic
code.
- "mm: batch free swaps for zap_pte_range()" from Barry Song. Greatly
improves the performance of munmap() of swap-filled ptes.
- "support large folio swap-out and swap-in for shmem" from Baolin
Wang. With this series we no longer split shmem large folios into
simgle-page folios when swapping out shmem.
- "mm/hugetlb: alloc/free gigantic folios" from Yu Zhao. Nice
performance improvements and code reductions for gigantic folios.
- "support shmem mTHP collapse" from Baolin Wang. Adds support for
khugepaged's collapsing of shmem mTHP folios.
- "mm: Optimize mseal checks" from Pedro Falcato. Fixes an mprotect()
performance regression due to the addition of mseal().
- "Increase the number of bits available in page_type" from Matthew
Wilcox. Increases the number of bits available in page_type!
- "Simplify the page flags a little" from Matthew Wilcox. Many legacy
page flags are now folio flags, so the page-based flags and their
accessors/mutators can be removed.
- "mm: store zero pages to be swapped out in a bitmap" from Usama
Arif. An optimization which permits us to avoid writing/reading
zero-filled zswap pages to backing store.
- "Avoid MAP_FIXED gap exposure" from Liam Howlett. Fixes a race
window which occurs when a MAP_FIXED operqtion is occurring during
an unrelated vma tree walk.
- "mm: remove vma_merge()" from Lorenzo Stoakes. Major rotorooting of
the vma_merge() functionality, making ot cleaner, more testable and
better tested.
- "misc fixups for DAMON {self,kunit} tests" from SeongJae Park.
Minor fixups of DAMON selftests and kunit tests.
- "mm: memory_hotplug: improve do_migrate_range()" from Kefeng Wang.
Code cleanups and folio conversions.
- "Shmem mTHP controls and stats improvements" from Ryan Roberts.
Cleanups for shmem controls and stats.
- "mm: count the number of anonymous THPs per size" from Barry Song.
Expose additional anon THP stats to userspace for improved tuning.
- "mm: finish isolate/putback_lru_page()" from Kefeng Wang: more
folio conversions and removal of now-unused page-based APIs.
- "replace per-quota region priorities histogram buffer with
per-context one" from SeongJae Park. DAMON histogram
rationalization.
- "Docs/damon: update GitHub repo URLs and maintainer-profile" from
SeongJae Park. DAMON documentation updates.
- "mm/vdpa: correct misuse of non-direct-reclaim __GFP_NOFAIL and
improve related doc and warn" from Jason Wang: fixes usage of page
allocator __GFP_NOFAIL and GFP_ATOMIC flags.
- "mm: split underused THPs" from Yu Zhao. Improve THP=always policy.
This was overprovisioning THPs in sparsely accessed memory areas.
- "zram: introduce custom comp backends API" frm Sergey Senozhatsky.
Add support for zram run-time compression algorithm tuning.
- "mm: Care about shadow stack guard gap when getting an unmapped
area" from Mark Brown. Fix up the various arch_get_unmapped_area()
implementations to better respect guard areas.
- "Improve mem_cgroup_iter()" from Kinsey Ho. Improve the reliability
of mem_cgroup_iter() and various code cleanups.
- "mm: Support huge pfnmaps" from Peter Xu. Extends the usage of huge
pfnmap support.
- "resource: Fix region_intersects() vs add_memory_driver_managed()"
from Huang Ying. Fix a bug in region_intersects() for systems with
CXL memory.
- "mm: hwpoison: two more poison recovery" from Kefeng Wang. Teaches
a couple more code paths to correctly recover from the encountering
of poisoned memry.
- "mm: enable large folios swap-in support" from Barry Song. Support
the swapin of mTHP memory into appropriately-sized folios, rather
than into single-page folios"
* tag 'mm-stable-2024-09-20-02-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (416 commits)
zram: free secondary algorithms names
uprobes: turn xol_area->pages[2] into xol_area->page
uprobes: introduce the global struct vm_special_mapping xol_mapping
Revert "uprobes: use vm_special_mapping close() functionality"
mm: support large folios swap-in for sync io devices
mm: add nr argument in mem_cgroup_swapin_uncharge_swap() helper to support large folios
mm: fix swap_read_folio_zeromap() for large folios with partial zeromap
mm/debug_vm_pgtable: Use pxdp_get() for accessing page table entries
set_memory: add __must_check to generic stubs
mm/vma: return the exact errno in vms_gather_munmap_vmas()
memcg: cleanup with !CONFIG_MEMCG_V1
mm/show_mem.c: report alloc tags in human readable units
mm: support poison recovery from copy_present_page()
mm: support poison recovery from do_cow_fault()
resource, kunit: add test case for region_intersects()
resource: make alloc_free_mem_region() works for iomem_resource
mm: z3fold: deprecate CONFIG_Z3FOLD
vfio/pci: implement huge_fault support
mm/arm64: support large pfn mappings
mm/x86: support large pfn mappings
...
|
||
|
Chuck Lever
|
c4de97f7c4 |
svcrdma: Handle device removal outside of the CM event handler
Synchronously wait for all disconnects to complete to ensure the transports have divested all hardware resources before the underlying RDMA device can safely be removed. Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
||
|
Linus Torvalds
|
a1d1eb2f57 |
SCSI misc on 20240919
Updates to the usual drivers (ufs, smartpqi, NCR5380, mac_scsi, lpfc, mpi3mr). There are no user visible core changes and a whole series of minor updates and fixes. The largest core change is probably the simplification of the workqueue allocation path. Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> -----BEGIN PGP SIGNATURE----- iJwEABMIAEQWIQTnYEDbdso9F2cI+arnQslM7pishQUCZuvd5yYcamFtZXMuYm90 dG9tbGV5QGhhbnNlbnBhcnRuZXJzaGlwLmNvbQAKCRDnQslM7pishV7dAQC+TSlv BeNm8W4yAFCXLCwnJh8rT6ZzuBsjsIHH1DPP3wD+IXuIOFf5gVRJGpCNJc/dI082 /ehSrIdeJxwaNoOOt+Y= =SXZD -----END PGP SIGNATURE----- Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI updates from James Bottomley: "Updates to the usual drivers (ufs, smartpqi, NCR5380, mac_scsi, lpfc, mpi3mr). There are no user visible core changes and a whole series of minor updates and fixes. The largest core change is probably the simplification of the workqueue allocation path" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (86 commits) scsi: smartpqi: update driver version to 2.1.30-031 scsi: smartpqi: fix volume size updates scsi: smartpqi: fix rare system hang during LUN reset scsi: smartpqi: add new controller PCI IDs scsi: smartpqi: add counter for parity write stream requests scsi: smartpqi: correct stream detection scsi: smartpqi: Add fw log to kdump scsi: bnx2fc: Remove some unused fields in struct bnx2fc_rport scsi: qla2xxx: Remove the unused 'del_list_entry' field in struct fc_port scsi: ufs: core: Remove ufshcd_urgent_bkops() scsi: core: Remove obsoleted declaration for scsi_driverbyte_string() scsi: bnx2i: Remove unused declarations scsi: core: Simplify an alloc_workqueue() invocation scsi: ufs: Simplify alloc*_workqueue() invocation scsi: stex: Simplify an alloc_ordered_workqueue() invocation scsi: scsi_transport_fc: Simplify alloc_workqueue() invocations scsi: snic: Simplify alloc_workqueue() invocations scsi: qedi: Simplify an alloc_workqueue() invocation scsi: qedf: Simplify alloc_workqueue() invocations scsi: myrs: Simplify an alloc_ordered_workqueue() invocation ... |
||
|
Linus Torvalds
|
726e2d0cf2 |
dma-mapping updates for linux 6.12
- support DMA zones for arm64 systems where memory starts at > 4GB
(Baruch Siach, Catalin Marinas)
- support direct calls into dma-iommu and thus obsolete dma_map_ops for
many common configurations (Leon Romanovsky)
- add DMA-API tracing (Sean Anderson)
- remove the not very useful return value from various dma_set_* APIs
(Christoph Hellwig)
- misc cleanups and minor optimizations (Chen Y, Yosry Ahmed,
Christoph Hellwig)
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Merge tag 'dma-mapping-6.12-2024-09-19' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping updates from Christoph Hellwig:
- support DMA zones for arm64 systems where memory starts at > 4GB
(Baruch Siach, Catalin Marinas)
- support direct calls into dma-iommu and thus obsolete dma_map_ops for
many common configurations (Leon Romanovsky)
- add DMA-API tracing (Sean Anderson)
- remove the not very useful return value from various dma_set_* APIs
(Christoph Hellwig)
- misc cleanups and minor optimizations (Chen Y, Yosry Ahmed, Christoph
Hellwig)
* tag 'dma-mapping-6.12-2024-09-19' of git://git.infradead.org/users/hch/dma-mapping:
dma-mapping: reflow dma_supported
dma-mapping: reliably inform about DMA support for IOMMU
dma-mapping: add tracing for dma-mapping API calls
dma-mapping: use IOMMU DMA calls for common alloc/free page calls
dma-direct: optimize page freeing when it is not addressable
dma-mapping: clearly mark DMA ops as an architecture feature
vdpa_sim: don't select DMA_OPS
arm64: mm: keep low RAM dma zone
dma-mapping: don't return errors from dma_set_max_seg_size
dma-mapping: don't return errors from dma_set_seg_boundary
dma-mapping: don't return errors from dma_set_min_align_mask
scsi: check that busses support the DMA API before setting dma parameters
arm64: mm: fix DMA zone when dma-ranges is missing
dma-mapping: direct calls for dma-iommu
dma-mapping: call ->unmap_page and ->unmap_sg unconditionally
arm64: support DMA zone above 4GB
dma-mapping: replace zone_dma_bits by zone_dma_limit
dma-mapping: use bit masking to check VM_DMA_COHERENT
|
||
|
Linus Torvalds
|
84bbfe6b64 |
platform-drivers-x86 for v6.12-1
Highlights: - asus-wmi: Add support for vivobook fan profiles - dell-laptop: Add knobs to change battery charge settings - lg-laptop: Add operation region support - intel-uncore-freq: Add support for efficiency latency control - intel/ifs: Add SBAF test support - intel/pmc: Ignore all LTRs during suspend - platform/surface: Support for arm64 based Surface devices - wmi: Pass event data directly to legacy notify handlers - x86/platform/geode: switch GPIO buttons and LEDs to software properties - bunch of small cleanups, fixes, hw-id additions, etc. The following is an automated git shortlog grouped by driver: Documentation: - admin-guide: pm: Add efficiency vs. latency tradeoff to uncore documentation ISST: - Simplify isst_misc_reg() and isst_misc_unreg() MAINTAINERS: - adjust file entry in INTEL MID PLATFORM - Add Intel MID section Merge tag 'hwmon-for-v6.11-rc7' into review-hans: - Merge tag 'hwmon-for-v6.11-rc7' into review-hans Merge tag 'platform-drivers-x86-v6.11-3' into review-hans: - Merge tag 'platform-drivers-x86-v6.11-3' into review-hans acer-wmi: - Use backlight power constants asus-laptop: - Use backlight power constants asus-nb-wmi: - Use backlight power constants asus-wmi: - don't fail if platform_profile already registered - add debug print in more key places - Use backlight power constants - add support for vivobook fan profiles dell-laptop: - remove duplicate code w/ battery function - Add knobs to change battery charge settings dt-bindings: - platform: Add Surface System Aggregator Module - serial: Allow embedded-controller as child node eeepc-laptop: - Use backlight power constants eeepc-wmi: - Use backlight power constants fujitsu-laptop: - Use backlight power constants hid-asus: - use hid for brightness control on keyboard ideapad-laptop: - Make the scope_guard() clear of its scope - move ACPI helpers from header to source file - Use backlight power constants int3472: - Use str_high_low() - Use GPIO_LOOKUP() macro - make common part a separate module intel-hid: - Use string_choices API instead of ternary operator intel/pmc: - Ignore all LTRs during suspend - Remove unused param idx from pmc_for_each_mode() intel_scu_ipc: - Move intel_scu_ipc.h out of arch/x86/include/asm intel_scu_wdt: - Move intel_scu_wdt.h to x86 subfolder lenovo-ymc: - Ignore the 0x0 state lg-laptop: - Add operation region support oaktrail: - Use backlight power constants panasonic-laptop: - Add support for programmable buttons platform/mellanox: - mlxbf-pmc: fix lockdep warning platform/olpc: - Remove redundant null pointer checks in olpc_ec_setup_debugfs() platform/surface: - Add OF support platform/x86/amd: - pmf: Add quirk for TUF Gaming A14 platform/x86/amd/pmf: - Update SMU metrics table for 1AH family series - Relocate CPU ID macros to the PMF header - Add support for notifying Smart PC Solution updates platform/x86/intel-uncore-freq: - Add efficiency latency control to sysfs interface - Add support for efficiency latency control - Do not present separate package-die domain platform/x86/intel/ifs: - Fix SBAF title underline length - Add SBAF test support - Add SBAF test image loading support - Refactor MSR usage in IFS test code platform/x86/intel/pmc: - Show live substate requirements platform/x86/intel/pmt: - Use PMT callbacks platform/x86/intel/vsec: - Add PMT read callbacks platform/x86/intel/vsec.h: - Move to include/linux samsung-laptop: - Use backlight power constants serial-multi-instantiate: - Don't require both I2C and SPI thinkpad_acpi: - Fix uninitialized symbol 's' warning - Add Thinkpad Edge E531 fan support touchscreen_dmi: - add nanote-next quirk trace: - platform/x86/intel/ifs: Add SBAF trace support wmi: - Call both legacy and WMI driver notify handlers - Merge get_event_data() with wmi_get_notify_data() - Remove wmi_get_event_data() - Pass event data directly to legacy notify handlers x86-android-tablets: - Adjust Xiaomi Pad 2 bottom bezel touch buttons LED - Fix spelling in the comments x86/platform/geode: - switch GPIO buttons and LEDs to software properties -----BEGIN PGP SIGNATURE----- iQFIBAABCAAyFiEEuvA7XScYQRpenhd+kuxHeUQDJ9wFAmbq2tYUHGhkZWdvZWRl QHJlZGhhdC5jb20ACgkQkuxHeUQDJ9xKYAgAoXZt1MjBDA1mP813i4bj8CYQHWO+ YnugVhEccucxgC6sBGzQeRLBNuG/VaBN6tyJ1pKYMpWV5gSthq1Iop+DZbno2ciM QAnSSzioHB/dhYBXuKmZatkMsKLjLjtfcexUed9DfwKapqFl3XQMb6cEYasM37hH 197K4yAFF3oqQImlACwQDxN1q3eCG6bdIbEAByZW7yH644IC5zH8/CiFjTCwUx/F aFIHQlLLzt1kjhD8AbRHhRcsGbzG2ejHsC3yrQddEJSOkInDO8baR0aDyhBTUFPE lztuekFfaJ1Xcyoc/Zf4pi3ab1Djt+Htck3CHLO/xcl0YYMlM5vcs1QlhQ== =sAk7 -----END PGP SIGNATURE----- Merge tag 'platform-drivers-x86-v6.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 Pull x86 platform drivers updates from Hans de Goede: - asus-wmi: Add support for vivobook fan profiles - dell-laptop: Add knobs to change battery charge settings - lg-laptop: Add operation region support - intel-uncore-freq: Add support for efficiency latency control - intel/ifs: Add SBAF test support - intel/pmc: Ignore all LTRs during suspend - platform/surface: Support for arm64 based Surface devices - wmi: Pass event data directly to legacy notify handlers - x86/platform/geode: switch GPIO buttons and LEDs to software properties - bunch of small cleanups, fixes, hw-id additions, etc. * tag 'platform-drivers-x86-v6.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (65 commits) MAINTAINERS: adjust file entry in INTEL MID PLATFORM platform/x86: x86-android-tablets: Adjust Xiaomi Pad 2 bottom bezel touch buttons LED platform/mellanox: mlxbf-pmc: fix lockdep warning platform/x86/amd: pmf: Add quirk for TUF Gaming A14 platform/x86: touchscreen_dmi: add nanote-next quirk platform/x86: asus-wmi: don't fail if platform_profile already registered platform/x86: asus-wmi: add debug print in more key places platform/x86: intel_scu_wdt: Move intel_scu_wdt.h to x86 subfolder platform/x86: intel_scu_ipc: Move intel_scu_ipc.h out of arch/x86/include/asm MAINTAINERS: Add Intel MID section platform/x86: panasonic-laptop: Add support for programmable buttons platform/olpc: Remove redundant null pointer checks in olpc_ec_setup_debugfs() platform/x86: intel/pmc: Ignore all LTRs during suspend platform/x86: wmi: Call both legacy and WMI driver notify handlers platform/x86: wmi: Merge get_event_data() with wmi_get_notify_data() platform/x86: wmi: Remove wmi_get_event_data() platform/x86: wmi: Pass event data directly to legacy notify handlers platform/x86: thinkpad_acpi: Fix uninitialized symbol 's' warning platform/x86: x86-android-tablets: Fix spelling in the comments platform/x86: ideapad-laptop: Make the scope_guard() clear of its scope ... |
||
|
Linus Torvalds
|
4a39ac5b7d |
Random number generator updates for Linux 6.12-rc1.
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Merge tag 'random-6.12-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random
Pull random number generator updates from Jason Donenfeld:
"Originally I'd planned on sending each of the vDSO getrandom()
architecture ports to their respective arch trees. But as we started
to work on this, we found lots of interesting issues in the shared
code and infrastructure, the fixes for which the various archs needed
to base their work.
So in the end, this turned into a nice collaborative effort fixing up
issues and porting to 5 new architectures -- arm64, powerpc64,
powerpc32, s390x, and loongarch64 -- with everybody pitching in and
commenting on each other's code. It was a fun development cycle.
This contains:
- Numerous fixups to the vDSO selftest infrastructure, getting it
running successfully on more platforms, and fixing bugs in it.
- Additions to the vDSO getrandom & chacha selftests. Basically every
time manual review unearthed a bug in a revision of an arch patch,
or an ambiguity, the tests were augmented.
By the time the last arch was submitted for review, s390x, v1 of
the series was essentially fine right out of the gate.
- Fixes to the the generic C implementation of vDSO getrandom, to
build and run successfully on all archs, decoupling it from
assumptions we had (unintentionally) made on x86_64 that didn't
carry through to the other architectures.
- Port of vDSO getrandom to LoongArch64, from Xi Ruoyao and acked by
Huacai Chen.
- Port of vDSO getrandom to ARM64, from Adhemerval Zanella and acked
by Will Deacon.
- Port of vDSO getrandom to PowerPC, in both 32-bit and 64-bit
varieties, from Christophe Leroy and acked by Michael Ellerman.
- Port of vDSO getrandom to S390X from Heiko Carstens, the arch
maintainer.
While it'd be natural for there to be things to fix up over the course
of the development cycle, these patches got a decent amount of review
from a fairly diverse crew of folks on the mailing lists, and, for the
most part, they've been cooking in linux-next, which has been helpful
for ironing out build issues.
In terms of architectures, I think that mostly takes care of the
important 64-bit archs with hardware still being produced and running
production loads in settings where vDSO getrandom is likely to help.
Arguably there's still RISC-V left, and we'll see for 6.13 whether
they find it useful and submit a port"
* tag 'random-6.12-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random: (47 commits)
selftests: vDSO: check cpu caps before running chacha test
s390/vdso: Wire up getrandom() vdso implementation
s390/vdso: Move vdso symbol handling to separate header file
s390/vdso: Allow alternatives in vdso code
s390/module: Provide find_section() helper
s390/facility: Let test_facility() generate static branch if possible
s390/alternatives: Remove ALT_FACILITY_EARLY
s390/facility: Disable compile time optimization for decompressor code
selftests: vDSO: fix vdso_config for s390
selftests: vDSO: fix ELF hash table entry size for s390x
powerpc/vdso: Wire up getrandom() vDSO implementation on VDSO64
powerpc/vdso: Wire up getrandom() vDSO implementation on VDSO32
powerpc/vdso: Refactor CFLAGS for CVDSO build
powerpc/vdso32: Add crtsavres
mm: Define VM_DROPPABLE for powerpc/32
powerpc/vdso: Fix VDSO data access when running in a non-root time namespace
selftests: vDSO: don't include generated headers for chacha test
arm64: vDSO: Wire up getrandom() vDSO implementation
arm64: alternative: make alternative_has_cap_likely() VDSO compatible
selftests: vDSO: also test counter in vdso_test_chacha
...
|
||
|
Linus Torvalds
|
cc52dc2fe3 |
pwm: Changes for v6.12-rc1
This pull request contains some cleanups to the core and some mostly minor updates to a bunch of drivers and device tree bindings. One thing worth pointing out is that it contains an immutable branch containing support for a new mfd chip (Analog Devices ADP5585) with several sub drivers. So expect to get the four affected commits also from my fellow MFD and GPIO maintainers. Thanks go to Andrew Kreimer, Clark Wang, Conor Dooley, David Lechner, Dmitry Rokosov, Frank Li, Geert Uytterhoeven, George Stark, Jiapeng Chong, Krzysztof Kozlowski, Laurent Pinchart, Liao Chen, Liu Ying, Rob Herring and Wolfram Sang for code contributions and reviews and to Lee Jones for preparing the above mentioned immutable branch. -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEP4GsaTp6HlmJrf7Tj4D7WH0S/k4FAmboM3AACgkQj4D7WH0S /k6IzQgAj+3B4F4UKPPI8jcQqRQGOWfjA365nIQmr1oeFYSGDILv4btU1TNV1MfH WLXMRXLQb4dng21J8IwIJ/qyndL+GjRj3KWxLHJa3+/gxf8YuGwWJlNjlxtrGXM/ 3JQ/aWqfgCf4KTRG3MoCTKc5fxtbHHWZ71kGdi6cchk1HggyBUH/7g85h/VkhCuc JpOC7CvDVmzTkTIltCbiVJQ4xO3zmsV2WgnsWUzN+41PUjqJmMLmhKjI6UdAYWlI B3qgCMXik153oYgaIw/BMtxFWa9e2ZxZ6hV+gx4tVQWbOtBPUxEqHpX2dt1fp5+h 7PQoKVWJycykdxmlOSGnjOl3RHVX5A== =VjPD -----END PGP SIGNATURE----- Merge tag 'pwm/for-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux Pull pwm updates from Uwe Kleine-König: "This contains some cleanups to the core and some mostly minor updates to a bunch of drivers and device tree bindings. One thing worth pointing out is that it contains an immutable branch containing support for a new mfd chip (Analog Devices ADP5585) with several sub drivers. Thanks go to Andrew Kreimer, Clark Wang, Conor Dooley, David Lechner, Dmitry Rokosov, Frank Li, Geert Uytterhoeven, George Stark, Jiapeng Chong, Krzysztof Kozlowski, Laurent Pinchart, Liao Chen, Liu Ying, Rob Herring and Wolfram Sang for code contributions and reviews and to Lee Jones for preparing the above mentioned immutable branch" * tag 'pwm/for-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux: (21 commits) pwm: stm32: Fix a typo dt-bindings: pwm: amlogic: Add new bindings for meson A1 PWM dt-bindings: pwm: amlogic: Add optional power-domains pwm: Switch back to struct platform_driver::remove() dt-bindings: pwm: allwinner,sun4i-a10-pwm: add top-level constraints pwm: axi-pwmgen: use shared macro for version reg pwm: atmel-hlcdc: Drop trailing comma pwm: atmel-hlcdc: Enable module autoloading pwm: omap-dmtimer: Use of_property_read_bool() pwm: adp5585: Set OSC_EN bit to 1 when PWM state is enabled pwm: lp3943: Fix an incorrect type in lp3943_pwm_parse_dt() pwm: Simplify pwm_capture() pwm: lp3943: Use of_property_count_u32_elems() to get property length pwm: Don't export pwm_capture() pwm: Make info in traces about affected pwm more useful dt-bindings: pwm: renesas,tpu: Add r8a779h0 support dt-bindings: pwm: renesas,pwm-rcar: Add r8a779h0 support pwm: adp5585: Add Analog Devices ADP5585 support gpio: adp5585: Add Analog Devices ADP5585 support mfd: adp5585: Add Analog Devices ADP5585 core support ... |
||
|
Linus Torvalds
|
067610ebaa |
RCU pull request for v6.12
This pull request contains the following branches:
context_tracking.15.08.24a: Rename context tracking state related
symbols and remove references to "dynticks" in various context
tracking state variables and related helpers; force
context_tracking_enabled_this_cpu() to be inlined to avoid
leaving a noinstr section.
csd.lock.15.08.24a: Enhance CSD-lock diagnostic reports; add an API
to provide an indication of ongoing CSD-lock stall.
nocb.09.09.24a: Update and simplify RCU nocb code to handle
(de-)offloading of callbacks only for offline CPUs; fix RT
throttling hrtimer being armed from offline CPU.
rcutorture.14.08.24a: Remove redundant rcu_torture_ops get_gp_completed
fields; add SRCU ->same_gp_state and ->get_comp_state
functions; add generic test for NUM_ACTIVE_*RCU_POLL* for
testing RCU and SRCU polled grace periods; add CFcommon.arch
for arch-specific Kconfig options; print number of update types
in rcu_torture_write_types();
add rcutree.nohz_full_patience_delay testing to the TREE07
scenario; add a stall_cpu_repeat module parameter to test
repeated CPU stalls; add argument to limit number of CPUs a
guest OS can use in torture.sh;
rcustall.09.09.24a: Abbreviate RCU CPU stall warnings during CSD-lock
stalls; Allow dump_cpu_task() to be called without disabling
preemption; defer printing stall-warning backtrace when holding
rcu_node lock.
srcu.12.08.24a: Make SRCU gp seq wrap-around faster; add KCSAN checks
for concurrent updates to ->srcu_n_exp_nodelay and
->reschedule_count which are used in heuristics governing
auto-expediting of normal SRCU grace periods and
grace-period-state-machine delays; mark idle SRCU-barrier
callbacks to help identify stuck SRCU-barrier callback.
rcu.tasks.14.08.24a: Remove RCU Tasks Rude asynchronous APIs as they
are no longer used; stop testing RCU Tasks Rude asynchronous
APIs; fix access to non-existent percpu regions; check
processor-ID assumptions during chosen CPU calculation for
callback enqueuing; update description of rtp->tasks_gp_seq
grace-period sequence number; add rcu_barrier_cb_is_done()
to identify whether a given rcu_barrier callback is stuck;
mark idle Tasks-RCU-barrier callbacks; add
*torture_stats_print() functions to print detailed
diagnostics for Tasks-RCU variants; capture start time of
rcu_barrier_tasks*() operation to help distinguish a hung
barrier operation from a long series of barrier operations.
rcu_scaling_tests.15.08.24a:
refscale: Add a TINY scenario to support tests of Tiny RCU
and Tiny SRCU; Optimize process_durations() operation;
rcuscale: Dump stacks of stalled rcu_scale_writer() instances;
dump grace-period statistics when rcu_scale_writer() stalls;
mark idle RCU-barrier callbacks to identify stuck RCU-barrier
callbacks; print detailed grace-period and barrier diagnostics
on rcu_scale_writer() hangs for Tasks-RCU variants; warn if
async module parameter is specified for RCU implementations
that do not have async primitives such as RCU Tasks Rude;
make all writer tasks report upon hang; tolerate repeated
GFP_KERNEL failure in rcu_scale_writer(); use special allocator
for rcu_scale_writer(); NULL out top-level pointers to heap
memory to avoid double-free bugs on modprobe failures; maintain
per-task instead of per-CPU callbacks count to avoid any issues
with migration of either tasks or callbacks; constify struct
ref_scale_ops.
fixes.12.08.24a: Use system_unbound_wq for kfree_rcu work to avoid
disturbing isolated CPUs.
misc.11.08.24a: Warn on unexpected rcu_state.srs_done_tail state;
Better define "atomic" for list_replace_rcu() and
hlist_replace_rcu() routines; annotate struct
kvfree_rcu_bulk_data with __counted_by().
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Merge tag 'rcu.release.v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux
Pull RCU updates from Neeraj Upadhyay:
"Context tracking:
- rename context tracking state related symbols and remove references
to "dynticks" in various context tracking state variables and
related helpers
- force context_tracking_enabled_this_cpu() to be inlined to avoid
leaving a noinstr section
CSD lock:
- enhance CSD-lock diagnostic reports
- add an API to provide an indication of ongoing CSD-lock stall
nocb:
- update and simplify RCU nocb code to handle (de-)offloading of
callbacks only for offline CPUs
- fix RT throttling hrtimer being armed from offline CPU
rcutorture:
- remove redundant rcu_torture_ops get_gp_completed fields
- add SRCU ->same_gp_state and ->get_comp_state functions
- add generic test for NUM_ACTIVE_*RCU_POLL* for testing RCU and SRCU
polled grace periods
- add CFcommon.arch for arch-specific Kconfig options
- print number of update types in rcu_torture_write_types()
- add rcutree.nohz_full_patience_delay testing to the TREE07 scenario
- add a stall_cpu_repeat module parameter to test repeated CPU stalls
- add argument to limit number of CPUs a guest OS can use in
torture.sh
rcustall:
- abbreviate RCU CPU stall warnings during CSD-lock stalls
- Allow dump_cpu_task() to be called without disabling preemption
- defer printing stall-warning backtrace when holding rcu_node lock
srcu:
- make SRCU gp seq wrap-around faster
- add KCSAN checks for concurrent updates to ->srcu_n_exp_nodelay and
->reschedule_count which are used in heuristics governing
auto-expediting of normal SRCU grace periods and
grace-period-state-machine delays
- mark idle SRCU-barrier callbacks to help identify stuck
SRCU-barrier callback
rcu tasks:
- remove RCU Tasks Rude asynchronous APIs as they are no longer used
- stop testing RCU Tasks Rude asynchronous APIs
- fix access to non-existent percpu regions
- check processor-ID assumptions during chosen CPU calculation for
callback enqueuing
- update description of rtp->tasks_gp_seq grace-period sequence
number
- add rcu_barrier_cb_is_done() to identify whether a given
rcu_barrier callback is stuck
- mark idle Tasks-RCU-barrier callbacks
- add *torture_stats_print() functions to print detailed diagnostics
for Tasks-RCU variants
- capture start time of rcu_barrier_tasks*() operation to help
distinguish a hung barrier operation from a long series of barrier
operations
refscale:
- add a TINY scenario to support tests of Tiny RCU and Tiny
SRCU
- optimize process_durations() operation
rcuscale:
- dump stacks of stalled rcu_scale_writer() instances and
grace-period statistics when rcu_scale_writer() stalls
- mark idle RCU-barrier callbacks to identify stuck RCU-barrier
callbacks
- print detailed grace-period and barrier diagnostics on
rcu_scale_writer() hangs for Tasks-RCU variants
- warn if async module parameter is specified for RCU implementations
that do not have async primitives such as RCU Tasks Rude
- make all writer tasks report upon hang
- tolerate repeated GFP_KERNEL failure in rcu_scale_writer()
- use special allocator for rcu_scale_writer()
- NULL out top-level pointers to heap memory to avoid double-free
bugs on modprobe failures
- maintain per-task instead of per-CPU callbacks count to avoid any
issues with migration of either tasks or callbacks
- constify struct ref_scale_ops
Fixes:
- use system_unbound_wq for kfree_rcu work to avoid disturbing
isolated CPUs
Misc:
- warn on unexpected rcu_state.srs_done_tail state
- better define "atomic" for list_replace_rcu() and
hlist_replace_rcu() routines
- annotate struct kvfree_rcu_bulk_data with __counted_by()"
* tag 'rcu.release.v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (90 commits)
rcu: Defer printing stall-warning backtrace when holding rcu_node lock
rcu/nocb: Remove superfluous memory barrier after bypass enqueue
rcu/nocb: Conditionally wake up rcuo if not already waiting on GP
rcu/nocb: Fix RT throttling hrtimer armed from offline CPU
rcu/nocb: Simplify (de-)offloading state machine
context_tracking: Tag context_tracking_enabled_this_cpu() __always_inline
context_tracking, rcu: Rename rcu_dyntick trace event into rcu_watching
rcu: Update stray documentation references to rcu_dynticks_eqs_{enter, exit}()
rcu: Rename rcu_momentary_dyntick_idle() into rcu_momentary_eqs()
rcu: Rename rcu_implicit_dynticks_qs() into rcu_watching_snap_recheck()
rcu: Rename dyntick_save_progress_counter() into rcu_watching_snap_save()
rcu: Rename struct rcu_data .exp_dynticks_snap into .exp_watching_snap
rcu: Rename struct rcu_data .dynticks_snap into .watching_snap
rcu: Rename rcu_dynticks_zero_in_eqs() into rcu_watching_zero_in_eqs()
rcu: Rename rcu_dynticks_in_eqs_since() into rcu_watching_snap_stopped_since()
rcu: Rename rcu_dynticks_in_eqs() into rcu_watching_snap_in_eqs()
rcu: Rename rcu_dynticks_eqs_online() into rcu_watching_online()
context_tracking, rcu: Rename rcu_dynticks_curr_cpu_in_eqs() into rcu_is_watching_curr_cpu()
context_tracking, rcu: Rename rcu_dynticks_task*() into rcu_task*()
refscale: Constify struct ref_scale_ops
...
|
||
|
Linus Torvalds
|
2f27fce671 |
sound updates for 6.12-rc1
A fairly big update at this time, both in core and driver sides.
The core received rewrites in PCM buffer allocation handling and
locking optimizations, PCM rate updates followed by lots of cleanups.
In ASoC side, the legacy Intel drivers have been deprecated by AVS
drivers which leaded to the significant amount of code reduction.
SoundWire driver updates and other cleanups contributed more code
reduction, too.
USB-audio driver received a large cleanup of its big quirk table, and
the old snd_print*() API usages in many legacy drivers are replaced
with the standard print API.
Here are some highlights:
Core:
- More optimized locking in ALSA control code
- Rewrites of memalloc helpers for better DMA API usage
- Drop of obsoleted vmalloc PCM buffer helper API
- Continued MIDI2 UMP updates
- Support of a new user-space driven timer instance
- Update for more PCM support rates and cleanups
- Xrun counter report in the proc files
ASoC:
- Continued simplification and cleanup works for ASoC
- Extensive cleanups and refactoring of the Soundwire drivers
- Removal of Intel machine support obsoleted by the AVS driver
- Lots of DT schema conversions
- Machine support for many AMD and Intel x86 platforms
- Support for AMD ACP 7.1, Mediatek MT6367 and MT8365, Realtek RTL1320
SoundWire and rev C, and Texas Instruments TAS2563
USB-audio:
- Add support of multiple control interfaces
- A large rewrite of quirk table with macros
- Support for RME Digiface USB
HD-audio:
- Cleanup of quirk code for Samsung Galaxy laptops
- Clean up of detection of Cirrus codecs
- C-Media CM9825 HD-audio codec support
Others:
- Rewrites to standard print API in a lot of legacy drivers
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Merge tag 'sound-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"A fairly big update at this time, both in core and driver sides.
The core received rewrites in PCM buffer allocation handling and
locking optimizations, PCM rate updates followed by lots of cleanups.
In ASoC side, the legacy Intel drivers have been deprecated by AVS
drivers which leaded to the significant amount of code reduction.
SoundWire driver updates and other cleanups contributed more code
reduction, too.
USB-audio driver received a large cleanup of its big quirk table, and
the old snd_print*() API usages in many legacy drivers are replaced
with the standard print API.
Here are some highlights:
Core:
- More optimized locking in ALSA control code
- Rewrites of memalloc helpers for better DMA API usage
- Drop of obsoleted vmalloc PCM buffer helper API
- Continued MIDI2 UMP updates
- Support of a new user-space driven timer instance
- Update for more PCM support rates and cleanups
- Xrun counter report in the proc files
ASoC:
- Continued simplification and cleanup works for ASoC
- Extensive cleanups and refactoring of the Soundwire drivers
- Removal of Intel machine support obsoleted by the AVS driver
- Lots of DT schema conversions
- Machine support for many AMD and Intel x86 platforms
- Support for AMD ACP 7.1, Mediatek MT6367 and MT8365, Realtek
RTL1320 SoundWire and rev C, and Texas Instruments TAS2563
USB-audio:
- Add support of multiple control interfaces
- A large rewrite of quirk table with macros
- Support for RME Digiface USB
HD-audio:
- Cleanup of quirk code for Samsung Galaxy laptops
- Clean up of detection of Cirrus codecs
- C-Media CM9825 HD-audio codec support
Others:
- Rewrites to standard print API in a lot of legacy drivers"
* tag 'sound-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (410 commits)
ASoC: topology: Fix redundant logical jump
ASoC: tas2781: Add Calibration Kcontrols for Chromebook
ASoC: amd: acp: refactor SoundWire machine driver code
ASoC: sdw_utils/intel: move soundwire endpoint parsing helper functions
ASoC: sdw_util/intel: move soundwire endpoint and dai link structures
ASoC: intel: sof_sdw: rename soundwire parsing helper functions
ASoC: intel: sof_sdw: rename soundwire endpoint and dailink structures
ASoC: atmel: mchp-pdmc: Retain Non-Runtime Controls
ALSA: hda/realtek: Add support for Galaxy Book2 Pro (NP950XEE)
ASoC: mediatek: mt7986-afe-pcm: Remove redundant error message
ALSA: memalloc: Use proper DMA mapping API for x86 S/G buffer allocations
ALSA: memalloc: Use proper DMA mapping API for x86 WC buffer allocations
ALSA: usb-audio: Add logitech Audio profile quirk
ASoc: mediatek: mt8365: Remove unneeded assignment
ASoC: Intel: ARL: Add entry for HDMI-In capture support to non-I2S codec boards.
ASoC: Intel: sof_rt5682: Add HDMI-In capture with rt5682 support for ARL.
ASoC: SOF: Intel: hda: remove common_hdmi_codec_drv
ASoC: Intel: sof_pcm512x: do not check common_hdmi_codec_drv
ASoC: Intel: ehl_rt5660: do not check common_hdmi_codec_drv
ASoC: Intel: skl_hda_dsp_generic: use common module for DAI links
...
|
||
|
Hongbo Li
|
318580ad7f
|
hugetlbfs: support tracepoint
Add basic tracepoints for {alloc, evict, free}_inode, setattr and
fallocate. These can help users to debug hugetlbfs more conveniently.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Link: https://lore.kernel.org/r/20240829064110.67884-2-lihongbo22@huawei.com
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
|
||
|
Linus Torvalds
|
7a40974fd0 |
for-6.12-tag
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Merge tag 'for-6.12-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba:
"This brings mostly refactoring, cleanups, minor performance
optimizations and usual fixes. The folio API conversions are most
noticeable.
There's one less visible change that could have a high impact. The
extent lock scope for read is reduced, not held for the entire
operation. In the buffered read case it's left to page or inode lock,
some direct io read synchronization is still needed.
This used to prevent deadlocks induced by page faults during direct
io, so there was a 4K limitation on the requests, e.g. for io_uring.
In the future this will allow smoother integration with iomap where
the extent read lock was a major obstacle.
User visible changes:
- the FSTRIM ioctl updates the processed range even after an error or
interruption
- cleaner thread is woken up in SYNC ioctl instead of waking the
transaction thread that can take some delay before waking up the
cleaner, this can speed up cleaning of deleted subvolumes
- print an error message when opening a device fail, e.g. when it's
unexpectedly read-only
Core changes:
- improved extent map handling in various ways (locking, iteration, ...)
- new assertions and locking annotations
- raid-stripe-tree locking fixes
- use xarray for tracking dirty qgroup extents, switched from rb-tree
- turn the subpage test to compile-time condition if possible (e.g.
on x86_64 with 4K pages), this allows to skip a lot of ifs and
remove dead code
- more preparatory work for compression in subpage mode
Cleanups and refactoring
- folio API conversions, many simple cases where page is passed so
switch it to folios
- more subpage code refactoring, update page state bitmap processing
- introduce auto free for btrfs_path structure, use for the simple
cases"
* tag 'for-6.12-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (110 commits)
btrfs: only unlock the to-be-submitted ranges inside a folio
btrfs: merge btrfs_folio_unlock_writer() into btrfs_folio_end_writer_lock()
btrfs: BTRFS_PATH_AUTO_FREE in orphan.c
btrfs: use btrfs_path auto free in zoned.c
btrfs: DEFINE_FREE for struct btrfs_path
btrfs: remove btrfs_folio_end_all_writers()
btrfs: constify more pointer parameters
btrfs: rework BTRFS_I as macro to preserve parameter const
btrfs: add and use helper to verify the calling task has locked the inode
btrfs: always update fstrim_range on failure in FITRIM ioctl
btrfs: convert copy_inline_to_page() to use folio
btrfs: convert btrfs_decompress() to take a folio
btrfs: convert zstd_decompress() to take a folio
btrfs: convert lzo_decompress() to take a folio
btrfs: convert zlib_decompress() to take a folio
btrfs: convert try_release_extent_mapping() to take a folio
btrfs: convert try_release_extent_state() to take a folio
btrfs: convert submit_eb_page() to take a folio
btrfs: convert submit_eb_subpage() to take a folio
btrfs: convert read_key_bytes() to take a folio
...
|
||
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Linus Torvalds
|
35219bc5c7 |
vfs-6.12.netfs
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Merge tag 'vfs-6.12.netfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull netfs updates from Christian Brauner:
"This contains the work to improve read/write performance for the new
netfs library.
The main performance enhancing changes are:
- Define a structure, struct folio_queue, and a new iterator type,
ITER_FOLIOQ, to hold a buffer as a replacement for ITER_XARRAY. See
that patch for questions about naming and form.
ITER_FOLIOQ is provided as a replacement for ITER_XARRAY. The
problem with an xarray is that accessing it requires the use of a
lock (typically the RCU read lock) - and this means that we can't
supply iterate_and_advance() with a step function that might sleep
(crypto for example) without having to drop the lock between pages.
ITER_FOLIOQ is the iterator for a chain of folio_queue structs,
where each folio_queue holds a small list of folios. A folio_queue
struct is a simpler structure than xarray and is not subject to
concurrent manipulation by the VM. folio_queue is used rather than
a bvec[] as it can form lists of indefinite size, adding to one end
and removing from the other on the fly.
- Provide a copy_folio_from_iter() wrapper.
- Make cifs RDMA support ITER_FOLIOQ.
- Use folio queues in the write-side helpers instead of xarrays.
- Add a function to reset the iterator in a subrequest.
- Simplify the write-side helpers to use sheaves to skip gaps rather
than trying to work out where gaps are.
- In afs, make the read subrequests asynchronous, putting them into
work items to allow the next patch to do progressive
unlocking/reading.
- Overhaul the read-side helpers to improve performance.
- Fix the caching of a partial block at the end of a file.
- Allow a store to be cancelled.
Then some changes for cifs to make it use folio queues instead of
xarrays for crypto bufferage:
- Use raw iteration functions rather than manually coding iteration
when hashing data.
- Switch to using folio_queue for crypto buffers.
- Remove the xarray bits.
Make some adjustments to the /proc/fs/netfs/stats file such that:
- All the netfs stats lines begin 'Netfs:' but change this to
something a bit more useful.
- Add a couple of stats counters to track the numbers of skips and
waits on the per-inode writeback serialisation lock to make it
easier to check for this as a source of performance loss.
Miscellaneous work:
- Ensure that the sb_writers lock is taken around
vfs_{set,remove}xattr() in the cachefiles code.
- Reduce the number of conditional branches in netfs_perform_write().
- Move the CIFS_INO_MODIFIED_ATTR flag to the netfs_inode struct and
remove cifs_post_modify().
- Move the max_len/max_nr_segs members from netfs_io_subrequest to
netfs_io_request as they're only needed for one subreq at a time.
- Add an 'unknown' source value for tracing purposes.
- Remove NETFS_COPY_TO_CACHE as it's no longer used.
- Set the request work function up front at allocation time.
- Use bh-disabling spinlocks for rreq->lock as cachefiles completion
may be run from block-filesystem DIO completion in softirq context.
- Remove fs/netfs/io.c"
* tag 'vfs-6.12.netfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (25 commits)
docs: filesystems: corrected grammar of netfs page
cifs: Don't support ITER_XARRAY
cifs: Switch crypto buffer to use a folio_queue rather than an xarray
cifs: Use iterate_and_advance*() routines directly for hashing
netfs: Cancel dirty folios that have no storage destination
cachefiles, netfs: Fix write to partial block at EOF
netfs: Remove fs/netfs/io.c
netfs: Speed up buffered reading
afs: Make read subreqs async
netfs: Simplify the writeback code
netfs: Provide an iterator-reset function
netfs: Use new folio_queue data type and iterator instead of xarray iter
cifs: Provide the capability to extract from ITER_FOLIOQ to RDMA SGEs
iov_iter: Provide copy_folio_from_iter()
mm: Define struct folio_queue and ITER_FOLIOQ to handle a sequence of folios
netfs: Use bh-disabling spinlocks for rreq->lock
netfs: Set the request work function upon allocation
netfs: Remove NETFS_COPY_TO_CACHE
netfs: Reserve netfs_sreq_source 0 as unset/unknown
netfs: Move max_len/max_nr_segs from netfs_io_subrequest to netfs_io_stream
...
|
||
|
Linus Torvalds
|
ee25861f26 |
vfs-6.12.fallocate
-----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCZuQEwAAKCRCRxhvAZXjc omD7AQCZuWPXkEGYFD37MJZuRXNEoq7Tuj6yd0O2b5khUpzvyAD+MPuthGiCMPsu voPpUP83x7T0D3JsEsCAXtNeVRcIBQI= =xTs6 -----END PGP SIGNATURE----- Merge tag 'vfs-6.12.fallocate' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs Pull vfs fallocate updates from Christian Brauner: "This contains work to try and cleanup some the fallocate mode handling. Currently, it confusingly mixes operation modes and an optional flag. The work here tries to better define operation modes and optional flags allowing the core and filesystem code to use switch statements to switch on the operation mode" * tag 'vfs-6.12.fallocate' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: xfs: refactor xfs_file_fallocate xfs: move the xfs_is_always_cow_inode check into xfs_alloc_file_space xfs: call xfs_flush_unmap_range from xfs_free_file_space fs: sort out the fallocate mode vs flag mess ext4: remove tracing for FALLOC_FL_NO_HIDE_STALE block: remove checks for FALLOC_FL_NO_HIDE_STALE |
||
|
Linus Torvalds
|
8f72c31f45 |
vfs-6.12.misc
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Merge tag 'vfs-6.12.misc' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs
Pull misc vfs updates from Christian Brauner:
"This contains the usual pile of misc updates:
Features:
- Add F_CREATED_QUERY fcntl() that allows userspace to query whether
a file was actually created. Often userspace wants to know whether
an O_CREATE request did actually create a file without using
O_EXCL. The current logic is that to first attempts to open the
file without O_CREAT | O_EXCL and if ENOENT is returned userspace
tries again with both flags. If that succeeds all is well. If it
now reports EEXIST it retries.
That works fairly well but some corner cases make this more
involved. If this operates on a dangling symlink the first openat()
without O_CREAT | O_EXCL will return ENOENT but the second openat()
with O_CREAT | O_EXCL will fail with EEXIST.
The reason is that openat() without O_CREAT | O_EXCL follows the
symlink while O_CREAT | O_EXCL doesn't for security reasons. So
it's not something we can really change unless we add an explicit
opt-in via O_FOLLOW which seems really ugly.
All available workarounds are really nasty (fanotify, bpf lsm etc)
so add a simple fcntl().
- Try an opportunistic lookup for O_CREAT. Today, when opening a file
we'll typically do a fast lookup, but if O_CREAT is set, the kernel
always takes the exclusive inode lock. This was likely done with
the expectation that O_CREAT means that we always expect to do the
create, but that's often not the case. Many programs set O_CREAT
even in scenarios where the file already exists (see related
F_CREATED_QUERY patch motivation above).
The series contained in the pr rearranges the pathwalk-for-open
code to also attempt a fast_lookup in certain O_CREAT cases. If a
positive dentry is found, the inode_lock can be avoided altogether
and it can stay in rcuwalk mode for the last step_into.
- Expose the 64 bit mount id via name_to_handle_at()
Now that we provide a unique 64-bit mount ID interface in statx(2),
we can now provide a race-free way for name_to_handle_at(2) to
provide a file handle and corresponding mount without needing to
worry about racing with /proc/mountinfo parsing or having to open a
file just to do statx(2).
While this is not necessary if you are using AT_EMPTY_PATH and
don't care about an extra statx(2) call, users that pass full paths
into name_to_handle_at(2) need to know which mount the file handle
comes from (to make sure they don't try to open_by_handle_at a file
handle from a different filesystem) and switching to AT_EMPTY_PATH
would require allocating a file for every name_to_handle_at(2) call
- Add a per dentry expire timeout to autofs
There are two fairly well known automounter map formats, the autofs
format and the amd format (more or less System V and Berkley).
Some time ago Linux autofs added an amd map format parser that
implemented a fair amount of the amd functionality. This was done
within the autofs infrastructure and some functionality wasn't
implemented because it either didn't make sense or required extra
kernel changes. The idea was to restrict changes to be within the
existing autofs functionality as much as possible and leave changes
with a wider scope to be considered later.
One of these changes is implementing the amd options:
1) "unmount", expire this mount according to a timeout (same as
the current autofs default).
2) "nounmount", don't expire this mount (same as setting the
autofs timeout to 0 except only for this specific mount) .
3) "utimeout=<seconds>", expire this mount using the specified
timeout (again same as setting the autofs timeout but only for
this mount)
To implement these options per-dentry expire timeouts need to be
implemented for autofs indirect mounts. This is because all map
keys (mounts) for autofs indirect mounts use an expire timeout
stored in the autofs mount super block info. structure and all
indirect mounts use the same expire timeout.
Fixes:
- Fix missing fput for FSCONFIG_SET_FD in autofs
- Use param->file for FSCONFIG_SET_FD in coda
- Delete the 'fs/netfs' proc subtreee when netfs module exits
- Make sure that struct uid_gid_map fits into a single cacheline
- Don't flush in-flight wb switches for superblocks without cgroup
writeback
- Correcting the idmapping mount example in the idmapping
documentation
- Fix a race between evice_inodes() and find_inode() and iput()
- Refine the show_inode_state() macro definition in writeback code
- Prevent dump_mapping() from accessing invalid dentry.d_name.name
- Show actual source for debugfs in /proc/mounts
- Annotate data-race of busy_poll_usecs in eventpoll
- Don't WARN for racy path_noexec check in exec code
- Handle OOM on mnt_warn_timestamp_expiry()
- Fix some spelling in the iomap design documentation
- Fix typo in procfs comment
- Fix typo in fs/namespace.c comment
Cleanups:
- Add the VFS git tree to the MAINTAINERS file
- Move FMODE_UNSIGNED_OFFSET to fop_flags freeing up another f_mode
bit in struct file bringing us to 5 free f_mode bits
- Remove the __I_DIO_WAKEUP bit from i_state flags as we can simplify
the wait mechanism
- Remove the unused path_put_init() helper
- Replace a __u32 with u32 for s_fsnotify_mask as __u32 is uapi
specific
- Replace the unsigned long i_state member with a u32 i_state member
in struct inode freeing up 4 bytes in struct inode. Instead of
using the bit based wait apis we're now using the var event apis
and using the individual bytes of the i_state member to wait on
state changes
- Explain how per-syscall AT_* flags should be allocated
- Use in_group_or_capable() helper to simplify the posix acl mode
update code
- Switch to LIST_HEAD() in fsync_buffers_list() to simplify the code
- Removed comment about d_rcu_to_refcount() as that function doesn't
exist anymore
- Add kernel documentation for lookup_fast()
- Don't re-zero evenpoll fields
- Remove outdated comment after close_fd()
- Fix imprecise wording in comment about the pipe filesystem
- Drop GFP_NOFAIL mode from alloc_page_buffers
- Missing blank line warnings and struct declaration improved in
file_table
- Annotate struct poll_list with __counted_by()
- Remove the unused read parameter in percpu-rwsem
- Remove linux/prefetch.h include from direct-io code
- Use kmemdup_array instead of kmemdup for multiple allocation in
mnt_idmapping code
- Remove unused mnt_cursor_del() declaration
Performance tweaks:
- Dodge smp_mb in break_lease and break_deleg in the common case
- Only read fops once in fops_{get,put}()
- Use RCU in ilookup()
- Elide smp_mb in iversion handling in the common case
- Drop one lock trip in evict()"
* tag 'vfs-6.12.misc' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs: (58 commits)
uidgid: make sure we fit into one cacheline
proc: Fix typo in the comment
fs/pipe: Correct imprecise wording in comment
fhandle: expose u64 mount id to name_to_handle_at(2)
uapi: explain how per-syscall AT_* flags should be allocated
fs: drop GFP_NOFAIL mode from alloc_page_buffers
writeback: Refine the show_inode_state() macro definition
fs/inode: Prevent dump_mapping() accessing invalid dentry.d_name.name
mnt_idmapping: Use kmemdup_array instead of kmemdup for multiple allocation
netfs: Delete subtree of 'fs/netfs' when netfs module exits
fs: use LIST_HEAD() to simplify code
inode: make i_state a u32
inode: port __I_LRU_ISOLATING to var event
vfs: fix race between evice_inodes() and find_inode()&iput()
inode: port __I_NEW to var event
inode: port __I_SYNC to var event
fs: reorder i_state bits
fs: add i_state helpers
MAINTAINERS: add the VFS git tree
fs: s/__u32/u32/ for s_fsnotify_mask
...
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|
Christophe Leroy
|
d175ee98fe |
mm: Define VM_DROPPABLE for powerpc/32
Commit
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|
Jakub Kicinski
|
3b7dc7000e |
bpf-next-for-netdev
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTFp0I1jqZrAX+hPRXbK58LschIgwUCZuH9UQAKCRDbK58LschI g0/zAP99WOcCBp1M/jSTUOba230+eiol7l5RirDEA6wu7TqY2QEAuvMG0KfCCpTI I0WqStrK1QMbhwKPodJC1k+17jArKgw= =jfMU -----END PGP SIGNATURE----- Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Daniel Borkmann says: ==================== pull-request: bpf-next 2024-09-11 We've added 12 non-merge commits during the last 16 day(s) which contain a total of 20 files changed, 228 insertions(+), 30 deletions(-). There's a minor merge conflict in drivers/net/netkit.c: |
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Takashi Sakamoto
|
f1cba5212e |
firewire: core: rename cause flag of tracepoints event
The flag of FW_ISO_CONTEXT_COMPLETIONS_CAUSE_IRQ directly causes hardIRQ request by 1394 OHCI hardware when the corresponding isochronous packet is transferred, however it is not so directly associated to hardIRQ processing itself. This commit renames the flag so that it relates to interrupt parameter of internal packet data. Link: https://lore.kernel.org/r/20240912133038.238786-6-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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David Howells
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8f246b7c0a
|
netfs: Cancel dirty folios that have no storage destination
Kafs wants to be able to cache the contents of directories (and symlinks), but whilst these are downloaded from the server with the FS.FetchData RPC op and similar, the same as for regular files, they can't be updated by FS.StoreData, but rather have special operations (FS.MakeDir, etc.). Now, rather than redownloading a directory's content after each change made to that directory, kafs modifies the local blob. This blob can be saved out to the cache, and since it's using netfslib, kafs just marks the folios dirty and lets ->writepages() on the directory take care of it, as for an regular file. This is fine as long as there's a cache as although the upload stream is disabled, there's a cache stream to drive the procedure. But if the cache goes away in the meantime, suddenly there's no way do any writes and the code gets confused, complains "R=%x: No submit" to dmesg and leaves the dirty folio hanging. Fix this by just cancelling the store of the folio if neither stream is active. (If there's no cache at the time of dirtying, we should just not mark the folio dirty). Signed-off-by: David Howells <dhowells@redhat.com> cc: Jeff Layton <jlayton@kernel.org> cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Link: https://lore.kernel.org/r/20240814203850.2240469-23-dhowells@redhat.com/ # v2 Signed-off-by: Christian Brauner <brauner@kernel.org> |
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David Howells
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ee4cdf7ba8
|
netfs: Speed up buffered reading
Improve the efficiency of buffered reads in a number of ways:
(1) Overhaul the algorithm in general so that it's a lot more compact and
split the read submission code between buffered and unbuffered
versions. The unbuffered version can be vastly simplified.
(2) Read-result collection is handed off to a work queue rather than being
done in the I/O thread. Multiple subrequests can be processes
simultaneously.
(3) When a subrequest is collected, any folios it fully spans are
collected and "spare" data on either side is donated to either the
previous or the next subrequest in the sequence.
Notes:
(*) Readahead expansion is massively slows down fio, presumably because it
causes a load of extra allocations, both folio and xarray, up front
before RPC requests can be transmitted.
(*) RDMA with cifs does appear to work, both with SIW and RXE.
(*) PG_private_2-based reading and copy-to-cache is split out into its own
file and altered to use folio_queue. Note that the copy to the cache
now creates a new write transaction against the cache and adds the
folios to be copied into it. This allows it to use part of the
writeback I/O code.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
Link: https://lore.kernel.org/r/20240814203850.2240469-20-dhowells@redhat.com/ # v2
Signed-off-by: Christian Brauner <brauner@kernel.org>
|
||
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David Howells
|
983cdcf8fe
|
netfs: Simplify the writeback code
Use the new folio_queue structures to simplify the writeback code. The problem with referring to the i_pages xarray directly is that we may have gaps in the sequence of folios we're writing from that we need to skip when we're removing the writeback mark from the folios we're writing back from. At the moment the code tries to deal with this by carefully tracking the gaps in each writeback stream (eg. write to server and write to cache) and divining when there's a gap that spans folios (something that's not helped by folios not being a consistent size). Instead, the folio_queue buffer contains pointers only the folios we're dealing with, has them in ascending order and indicates a gap by placing non-consequitive folios next to each other. This makes it possible to track where we need to clean up to by just keeping track of where we've processed to on each stream and taking the minimum. Note that the I/O iterator is always rounded up to the end of the folio, even if that is beyond the EOF position, so that the cache can do DIO from the page. The excess space is cleared, though mmapped writes clobber it. Signed-off-by: David Howells <dhowells@redhat.com> cc: Jeff Layton <jlayton@kernel.org> cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Link: https://lore.kernel.org/r/20240814203850.2240469-18-dhowells@redhat.com/ # v2 Signed-off-by: Christian Brauner <brauner@kernel.org> |
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David Howells
|
cd0277ed0c
|
netfs: Use new folio_queue data type and iterator instead of xarray iter
Make the netfs write-side routines use the new folio_queue struct to hold a rolling buffer of folios, with the issuer adding folios at the tail and the collector removing them from the head as they're processed instead of using an xarray. This will allow a subsequent patch to simplify the write collector. The primary mark (as tested by folioq_is_marked()) is used to note if the corresponding folio needs putting. Signed-off-by: David Howells <dhowells@redhat.com> cc: Jeff Layton <jlayton@kernel.org> cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Link: https://lore.kernel.org/r/20240814203850.2240469-16-dhowells@redhat.com/ # v2 Signed-off-by: Christian Brauner <brauner@kernel.org> |
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Mina Almasry
|
8ab79ed50c |
page_pool: devmem support
Convert netmem to be a union of struct page and struct netmem. Overload
the LSB of struct netmem* to indicate that it's a net_iov, otherwise
it's a page.
Currently these entries in struct page are rented by the page_pool and
used exclusively by the net stack:
struct {
unsigned long pp_magic;
struct page_pool *pp;
unsigned long _pp_mapping_pad;
unsigned long dma_addr;
atomic_long_t pp_ref_count;
};
Mirror these (and only these) entries into struct net_iov and implement
netmem helpers that can access these common fields regardless of
whether the underlying type is page or net_iov.
Implement checks for net_iov in netmem helpers which delegate to mm
APIs, to ensure net_iov are never passed to the mm stack.
Signed-off-by: Mina Almasry <almasrymina@google.com>
Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Link: https://patch.msgid.link/20240910171458.219195-6-almasrymina@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
||
|
Philo Lu
|
edd3f6f758 |
tcp: Use skb__nullable in trace_tcp_send_reset
Replace skb with skb__nullable as the argument name. The suffix tells bpf verifier through btf that the arg could be NULL and should be checked in tp_btf prog. For now, this is the only nullable argument in tcp tracepoints. Signed-off-by: Philo Lu <lulie@linux.alibaba.com> Acked-by: Jakub Kicinski <kuba@kernel.org> Link: https://lore.kernel.org/r/20240911033719.91468-4-lulie@linux.alibaba.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> |
||
|
David Sterba
|
ca283ea992 |
btrfs: constify more pointer parameters
Continue adding const to parameters. This is for clarity and minor addition to safety. There are some minor effects, in the assembly code and .ko measured on release config. Signed-off-by: David Sterba <dsterba@suse.com> |
||
|
David Sterba
|
06de42c5a9 |
btrfs: rename __extent_writepage() and drop double underscores
The function does not follow the pattern where the underscores would be justified, so rename it. Reviewed-by: Qu Wenruo <wqu@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
||
|
Josef Bacik
|
9e97e8b277 |
btrfs: update the writepage tracepoint to take a folio
Willy is wanting to get rid of page->index, convert the writepage tracepoint to take a folio so we can do folio->index instead of page->index. Signed-off-by: Josef Bacik <josef@toxicpanda.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
||
|
Sean Anderson
|
038eb433dc |
dma-mapping: add tracing for dma-mapping API calls
When debugging drivers, it can often be useful to trace when memory gets (un)mapped for DMA (and can be accessed by the device). Add some tracepoints for this purpose. Use u64 instead of phys_addr_t and dma_addr_t (and similarly %llx instead of %pa) because libtraceevent can't handle typedefs in all cases. Signed-off-by: Sean Anderson <sean.anderson@linux.dev> Signed-off-by: Christoph Hellwig <hch@lst.de> |
||
|
Hans de Goede
|
56d8b784c5 |
hwmon fixes for v6.11-rc7
hp-wmi-sensors: Check if WMI event data exists before accessing it
ltc2991: fix register bits defines
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Merge tag 'hwmon-for-v6.11-rc7' into review-hans
Merge "hwmon fixes for v6.11-rc7" into review-hans to bring in
commit
|
||
|
Uwe Kleine-König
|
1c3e34bf88 |
pwm: Make info in traces about affected pwm more useful
The hashed pointer isn't useful to identify the pwm device. Instead store and emit chipid and hwpwm. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Link: https://lore.kernel.org/r/20240705211452.1157967-2-u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org> |
||
|
David Howells
|
c57de2a925
|
netfs: Remove NETFS_COPY_TO_CACHE
Remove NETFS_COPY_TO_CACHE as it isn't used anymore. Signed-off-by: David Howells <dhowells@redhat.com> cc: Jeff Layton <jlayton@kernel.org> cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Link: https://lore.kernel.org/r/20240814203850.2240469-10-dhowells@redhat.com/ # v2 Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
David Howells
|
51e9a86a4f
|
netfs: Reserve netfs_sreq_source 0 as unset/unknown
Reserve the 0-valued netfs_sreq_source to mean unset or unknown so that it can be seen in the trace as such rather than appearing as download-from-server when it's going to get switched to something else. Signed-off-by: David Howells <dhowells@redhat.com> cc: Jeff Layton <jlayton@kernel.org> cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Link: https://lore.kernel.org/r/20240814203850.2240469-9-dhowells@redhat.com/ # v2 Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
David Howells
|
8f52de0077
|
netfs: Reduce number of conditional branches in netfs_perform_write()
Reduce the number of conditional branches in netfs_perform_write() by merging in netfs_how_to_modify() and then creating a separate if-statement for each way we might modify a folio. Note that this means replicating the data copy in each path. Signed-off-by: David Howells <dhowells@redhat.com> cc: Jeff Layton <jlayton@kernel.org> cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Link: https://lore.kernel.org/r/20240814203850.2240469-6-dhowells@redhat.com/ # v2 Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
Tejun Heo
|
649e980dad |
Merge branch 'bpf/master' into for-6.12
Pull bpf/master to receive
|
||
|
Matthew Wilcox (Oracle)
|
7a87225ae2 |
x86: remove PG_uncached
Convert x86 to use PG_arch_2 instead of PG_uncached and remove PG_uncached. Link: https://lkml.kernel.org/r/20240821193445.2294269-11-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Matthew Wilcox (Oracle)
|
02e1960aaf |
mm: rename PG_mappedtodisk to PG_owner_2
This flag has similar constraints to PG_owner_priv_1 -- it is ignored by core code, and is entirely for the use of the code which allocated the folio. Since the pagecache does not use it, individual filesystems can use it. The bufferhead code does use it, so filesystems which use the buffer cache must not use it for another purpose. Link: https://lkml.kernel.org/r/20240821193445.2294269-10-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Matthew Wilcox (Oracle)
|
e27ad6560e |
printf: remove %pGt support
Patch series "Increase the number of bits available in page_type". Kent wants more than 16 bits in page_type, so I resurrected this old patch and expanded it a bit. It's a bit more efficient than our current scheme (1 4-byte insn vs 3 insns of 13 bytes total) to test a single page type. This patch (of 4): An upcoming patch will convert page type from being a bitfield to a single byte, so we will not be able to use %pG to print the page type any more. The printing of the symbolic name will be restored in that patch. Link: https://lkml.kernel.org/r/20240821173914.2270383-1-willy@infradead.org Link: https://lkml.kernel.org/r/20240821173914.2270383-2-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Acked-by: David Hildenbrand <david@redhat.com> Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com> Cc: Kent Overstreet <kent.overstreet@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Takaya Saeki
|
b6273b55d8 |
filemap: add trace events for get_pages, map_pages, and fault
To allow precise tracking of page caches accessed, add new tracepoints that trigger when a process actually accesses them. The ureadahead program used by ChromeOS traces the disk access of programs as they start up at boot up. It uses mincore(2) or the 'mm_filemap_add_to_page_cache' trace event to accomplish this. It stores this information in a "pack" file and on subsequent boots, it will read the pack file and call readahead(2) on the information so that disk storage can be loaded into RAM before the applications actually need it. A problem we see is that due to the kernel's readahead algorithm that can aggressively pull in more data than needed (to try and accomplish the same goal) and this data is also recorded. The end result is that the pack file contains a lot of pages on disk that are never actually used. Calling readahead(2) on these unused pages can slow down the system boot up times. To solve this, add 3 new trace events, get_pages, map_pages, and fault. These will be used to trace the pages are not only pulled in from disk, but are actually used by the application. Only those pages will be stored in the pack file, and this helps out the performance of boot up. With the combination of these 3 new trace events and mm_filemap_add_to_page_cache, we observed a reduction in the pack file by 7.3% - 20% on ChromeOS varying by device. Link: https://lkml.kernel.org/r/20240813100312.3930505-1-takayas@chromium.org Signed-off-by: Takaya Saeki <takayas@chromium.org> Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Cc: Junichi Uekawa <uekawa@chromium.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Matthew Wilcox (Oracle)
|
09022bc196 |
mm: remove PG_error
The PG_error bit is now unused; delete it and free up a bit in page->flags. Link: https://lkml.kernel.org/r/20240807193528.1865100-2-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Wei Yang
|
29943248af |
mm: improve code consistency with zonelist_* helper functions
Replace direct access to zoneref->zone, zoneref->zone_idx, or zone_to_nid(zoneref->zone) with the corresponding zonelist_* helper functions for consistency. No functional change. Link: https://lkml.kernel.org/r/20240729091717.464-1-shivankg@amd.com Co-developed-by: Shivank Garg <shivankg@amd.com> Signed-off-by: Shivank Garg <shivankg@amd.com> Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Acked-by: David Hildenbrand <david@redhat.com> Cc: Mike Rapoport (IBM) <rppt@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Julian Sun
|
459ca85ae1 |
writeback: Refine the show_inode_state() macro definition
Currently, the show_inode_state() macro only prints part of the state of inode->i_state. Let’s improve it to display more of its state. Signed-off-by: Julian Sun <sunjunchao2870@gmail.com> Link: https://lore.kernel.org/r/20240828081359.62429-1-sunjunchao2870@gmail.com Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Christian Brauner <brauner@kernel.org> |
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Christoph Hellwig
|
f951171044 |
ext4: remove tracing for FALLOC_FL_NO_HIDE_STALE
FALLOC_FL_NO_HIDE_STALE can't make it past vfs_fallocate (and if the flag does what the name implies that's a good thing as it would be highly dangerous). Remove the dead tracing code for it. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20240827065123.1762168-3-hch@lst.de Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Christian Brauner <brauner@kernel.org> |
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Avri Altman
|
89835a58f5 |
scsi: ufs: Move UFS trace events to private header
UFS trace events are called exclusively from the UFS core drivers. Make those events private to the core driver. The MAINTAINERS file does not need updating as the maintainership remains the same and the relevant directory is already covered. Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Avri Altman <avri.altman@wdc.com> Link: https://lore.kernel.org/r/20240821055411.3128159-1-avri.altman@wdc.com Acked-by: Bean Huo <beanhuo@micron.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> |
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Chuck Lever
|
dc0112e6d8 |
rpcrdma: Trace connection registration and unregistration
These new trace points record xarray indices and the time of endpoint registration and unregistration, to co-ordinate with device removal events. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> |
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|
Takashi Iwai
|
41776e4008 |
Merge branch 'topic/seq-filter-cleanup' into for-next
Pull ALSA sequencer cleanup. Signed-off-by: Takashi Iwai <tiwai@suse.de> |
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Valentin Schneider
|
4f336dc07e |
context_tracking, rcu: Rename rcu_dyntick trace event into rcu_watching
The "rcu_dyntick" naming convention has been turned into "rcu_watching" for all helpers now, align the trace event to that. To add to the confusion, the strings passed to the trace event are now reversed: when RCU "starts" the dyntick / EQS state, it "stops" watching. Signed-off-by: Valentin Schneider <vschneid@redhat.com> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Signed-off-by: Neeraj Upadhyay <neeraj.upadhyay@kernel.org> |
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|
Chao Yu
|
aaf8c0b9ae |
f2fs: reduce expensive checkpoint trigger frequency
We may trigger high frequent checkpoint for below case: 1. mkdir /mnt/dir1; set dir1 encrypted 2. touch /mnt/file1; fsync /mnt/file1 3. mkdir /mnt/dir2; set dir2 encrypted 4. touch /mnt/file2; fsync /mnt/file2 ... Although, newly created dir and file are not related, due to commit |
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|
Linus Torvalds
|
4ac0f08f44 |
vfs-6.11-rc4.fixes
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Merge tag 'vfs-6.11-rc4.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs fixes from Christian Brauner:
"VFS:
- Fix the name of file lease slab cache. When file leases were split
out of file locks the name of the file lock slab cache was used for
the file leases slab cache as well.
- Fix a type in take_fd() helper.
- Fix infinite directory iteration for stable offsets in tmpfs.
- When the icache is pruned all reclaimable inodes are marked with
I_FREEING and other processes that try to lookup such inodes will
block.
But some filesystems like ext4 can trigger lookups in their inode
evict callback causing deadlocks. Ext4 does such lookups if the
ea_inode feature is used whereby a separate inode may be used to
store xattrs.
Introduce I_LRU_ISOLATING which pins the inode while its pages are
reclaimed. This avoids inode deletion during inode_lru_isolate()
avoiding the deadlock and evict is made to wait until
I_LRU_ISOLATING is done.
netfs:
- Fault in smaller chunks for non-large folio mappings for
filesystems that haven't been converted to large folios yet.
- Fix the CONFIG_NETFS_DEBUG config option. The config option was
renamed a short while ago and that introduced two minor issues.
First, it depended on CONFIG_NETFS whereas it wants to depend on
CONFIG_NETFS_SUPPORT. The former doesn't exist, while the latter
does. Second, the documentation for the config option wasn't fixed
up.
- Revert the removal of the PG_private_2 writeback flag as ceph is
using it and fix how that flag is handled in netfs.
- Fix DIO reads on 9p. A program watching a file on a 9p mount
wouldn't see any changes in the size of the file being exported by
the server if the file was changed directly in the source
filesystem. Fix this by attempting to read the full size specified
when a DIO read is requested.
- Fix a NULL pointer dereference bug due to a data race where a
cachefiles cookies was retired even though it was still in use.
Check the cookie's n_accesses counter before discarding it.
nsfs:
- Fix ioctl declaration for NS_GET_MNTNS_ID from _IO() to _IOR() as
the kernel is writing to userspace.
pidfs:
- Prevent the creation of pidfds for kthreads until we have a
use-case for it and we know the semantics we want. It also confuses
userspace why they can get pidfds for kthreads.
squashfs:
- Fix an unitialized value bug reported by KMSAN caused by a
corrupted symbolic link size read from disk. Check that the
symbolic link size is not larger than expected"
* tag 'vfs-6.11-rc4.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
Squashfs: sanity check symbolic link size
9p: Fix DIO read through netfs
vfs: Don't evict inode under the inode lru traversing context
netfs: Fix handling of USE_PGPRIV2 and WRITE_TO_CACHE flags
netfs, ceph: Revert "netfs: Remove deprecated use of PG_private_2 as a second writeback flag"
file: fix typo in take_fd() comment
pidfd: prevent creation of pidfds for kthreads
netfs: clean up after renaming FSCACHE_DEBUG config
libfs: fix infinite directory reads for offset dir
nsfs: fix ioctl declaration
fs/netfs/fscache_cookie: add missing "n_accesses" check
filelock: fix name of file_lease slab cache
netfs: Fault in smaller chunks for non-large folio mappings
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David Howells
|
7b589a9b45
|
netfs: Fix handling of USE_PGPRIV2 and WRITE_TO_CACHE flags
The NETFS_RREQ_USE_PGPRIV2 and NETFS_RREQ_WRITE_TO_CACHE flags aren't used
correctly. The problem is that we try to set them up in the request
initialisation, but we the cache may be in the process of setting up still,
and so the state may not be correct. Further, we secondarily sample the
cache state and make contradictory decisions later.
The issue arises because we set up the cache resources, which allows the
cache's ->prepare_read() to switch on NETFS_SREQ_COPY_TO_CACHE - which
triggers cache writing even if we didn't set the flags when allocating.
Fix this in the following way:
(1) Drop NETFS_ICTX_USE_PGPRIV2 and instead set NETFS_RREQ_USE_PGPRIV2 in
->init_request() rather than trying to juggle that in
netfs_alloc_request().
(2) Repurpose NETFS_RREQ_USE_PGPRIV2 to merely indicate that if caching is
to be done, then PG_private_2 is to be used rather than only setting
it if we decide to cache and then having netfs_rreq_unlock_folios()
set the non-PG_private_2 writeback-to-cache if it wasn't set.
(3) Split netfs_rreq_unlock_folios() into two functions, one of which
contains the deprecated code for using PG_private_2 to avoid
accidentally doing the writeback path - and always use it if
USE_PGPRIV2 is set.
(4) As NETFS_ICTX_USE_PGPRIV2 is removed, make netfs_write_begin() always
wait for PG_private_2. This function is deprecated and only used by
ceph anyway, and so label it so.
(5) Drop the NETFS_RREQ_WRITE_TO_CACHE flag and use
fscache_operation_valid() on the cache_resources instead. This has
the advantage of picking up the result of netfs_begin_cache_read() and
fscache_begin_write_operation() - which are called after the object is
initialised and will wait for the cache to come to a usable state.
Just reverting ae678317b95e[1] isn't a sufficient fix, so this need to be
applied on top of that. Without this as well, things like:
rcu: INFO: rcu_sched detected expedited stalls on CPUs/tasks: {
and:
WARNING: CPU: 13 PID: 3621 at fs/ceph/caps.c:3386
may happen, along with some UAFs due to PG_private_2 not getting used to
wait on writeback completion.
Fixes:
|
||
|
David Howells
|
8e5ced7804
|
netfs, ceph: Revert "netfs: Remove deprecated use of PG_private_2 as a second writeback flag"
This reverts commit |
||
|
Jithu Joseph
|
61b7496453 |
trace: platform/x86/intel/ifs: Add SBAF trace support
Add tracing support for the SBAF IFS tests, which may be useful for debugging systems that fail these tests. Log details like test content batch number, SBAF bundle ID, program index and the exact errors or warnings encountered by each HT thread during the test. Reviewed-by: Ashok Raj <ashok.raj@intel.com> Reviewed-by: Tony Luck <tony.luck@intel.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Jithu Joseph <jithu.joseph@intel.com> Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> Link: https://lore.kernel.org/r/20240801051814.1935149-5-sathyanarayanan.kuppuswamy@linux.intel.com Signed-off-by: Hans de Goede <hdegoede@redhat.com> |
||
|
Valentin Schneider
|
bf66471987 |
context_tracking, rcu: Rename struct context_tracking .dynticks_nesting into .nesting
The context_tracking.state RCU_DYNTICKS subvariable has been renamed to RCU_WATCHING, reflect that change in the related helpers. [ neeraj.upadhyay: Fix htmldocs build error reported by Stephen Rothwell ] Suggested-by: Frederic Weisbecker <frederic@kernel.org> Signed-off-by: Valentin Schneider <vschneid@redhat.com> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Signed-off-by: Neeraj Upadhyay <neeraj.upadhyay@kernel.org> |
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|
Takashi Iwai
|
4004f3029e |
Merge branch 'topic/control-lookup-rwlock' into for-next
Pull control lookup optimization changes. Signed-off-by: Takashi Iwai <tiwai@suse.de> |
||
|
Linus Torvalds
|
183d46ff42 |
Including fixes from wireless, bleutooth, BPF and netfilter.
Current release - regressions:
- core: drop bad gso csum_start and offset in virtio_net_hdr
- wifi: mt76: fix null pointer access in mt792x_mac_link_bss_remove
- eth: tun: add missing bpf_net_ctx_clear() in do_xdp_generic()
- phy: aquantia: only poll GLOBAL_CFG regs on aqr113, aqr113c and aqr115c
Current release - new code bugs:
- smc: prevent UAF in inet_create()
- bluetooth: btmtk: fix kernel crash when entering btmtk_usb_suspend
- eth: bnxt: reject unsupported hash functions
Previous releases - regressions:
- sched: act_ct: take care of padding in struct zones_ht_key
- netfilter: fix null-ptr-deref in iptable_nat_table_init().
- tcp: adjust clamping window for applications specifying SO_RCVBUF
Previous releases - always broken:
- ethtool: rss: small fixes to spec and GET
- mptcp:
- fix signal endpoint re-add
- pm: fix backup support in signal endpoints
- wifi: ath12k: fix soft lockup on suspend
- eth: bnxt_en: fix RSS logic in __bnxt_reserve_rings()
- eth: ice: fix AF_XDP ZC timeout and concurrency issues
- eth: mlx5:
- fix missing lock on sync reset reload
- fix error handling in irq_pool_request_irq
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from wireless, bleutooth, BPF and netfilter.
Current release - regressions:
- core: drop bad gso csum_start and offset in virtio_net_hdr
- wifi: mt76: fix null pointer access in mt792x_mac_link_bss_remove
- eth: tun: add missing bpf_net_ctx_clear() in do_xdp_generic()
- phy: aquantia: only poll GLOBAL_CFG regs on aqr113, aqr113c and
aqr115c
Current release - new code bugs:
- smc: prevent UAF in inet_create()
- bluetooth: btmtk: fix kernel crash when entering btmtk_usb_suspend
- eth: bnxt: reject unsupported hash functions
Previous releases - regressions:
- sched: act_ct: take care of padding in struct zones_ht_key
- netfilter: fix null-ptr-deref in iptable_nat_table_init().
- tcp: adjust clamping window for applications specifying SO_RCVBUF
Previous releases - always broken:
- ethtool: rss: small fixes to spec and GET
- mptcp:
- fix signal endpoint re-add
- pm: fix backup support in signal endpoints
- wifi: ath12k: fix soft lockup on suspend
- eth: bnxt_en: fix RSS logic in __bnxt_reserve_rings()
- eth: ice: fix AF_XDP ZC timeout and concurrency issues
- eth: mlx5:
- fix missing lock on sync reset reload
- fix error handling in irq_pool_request_irq"
* tag 'net-6.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (76 commits)
mptcp: fix duplicate data handling
mptcp: fix bad RCVPRUNED mib accounting
ipv6: fix ndisc_is_useropt() handling for PIO
igc: Fix double reset adapter triggered from a single taprio cmd
net: MAINTAINERS: Demote Qualcomm IPA to "maintained"
net: wan: fsl_qmc_hdlc: Discard received CRC
net: wan: fsl_qmc_hdlc: Convert carrier_lock spinlock to a mutex
net/mlx5e: Add a check for the return value from mlx5_port_set_eth_ptys
net/mlx5e: Fix CT entry update leaks of modify header context
net/mlx5e: Require mlx5 tc classifier action support for IPsec prio capability
net/mlx5: Fix missing lock on sync reset reload
net/mlx5: Lag, don't use the hardcoded value of the first port
net/mlx5: DR, Fix 'stack guard page was hit' error in dr_rule
net/mlx5: Fix error handling in irq_pool_request_irq
net/mlx5: Always drain health in shutdown callback
net: Add skbuff.h to MAINTAINERS
r8169: don't increment tx_dropped in case of NETDEV_TX_BUSY
netfilter: iptables: Fix potential null-ptr-deref in ip6table_nat_table_init().
netfilter: iptables: Fix null-ptr-deref in iptable_nat_table_init().
net: drop bad gso csum_start and offset in virtio_net_hdr
...
|
||
|
Kuninori Morimoto
|
469b77e421 |
ALSA: trace: use snd_pcm_direction_name()
We already have snd_pcm_direction_name(). Let's use it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://patch.msgid.link/87sevrk52f.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Takashi Iwai <tiwai@suse.de> |
||
|
Linus Torvalds
|
e4fc196f5b |
for-6.11-rc1-tag
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||
|
Tejun Heo
|
c8faf11cd1 |
Linux 6.11-rc1
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmamtfseHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGC20H/j6G3+7gYGDtSsl9 5eH7UFzk18JeIG4c9Z5q9p2YVqdTggHOyWUA0qYBJWLyjpQa0q5SO+Qf2VwH8bH7 NpHZQYIdRB6dy/MySZII/6KdOJobz779P8EOPVdPs6PaAmiwOwzdK4aHxhi3iQJv 8QHmswjnT6t44p7WX1gZCUL2R3TL5hyA505BfPBz5OPBLkuuTArCBO8mZfTvk3R6 fskKrVBC3oEb9Vgx/bycah9wTJn4ptPUGggaTnbu44RkhZcHfMiciqOrtMtYtqKx fmGQllbVQ8CHp4IBZ5nYfUB4E04Zg+XqNeYHa0T9R97e7crZ5iMKutujydmnhqA0 r3Ca53w= =R3sl -----END PGP SIGNATURE----- Merge tag 'v6.11-rc1' into for-6.12 Linux 6.11-rc1 |
||
|
Matthieu Baerts (NGI0)
|
b6a66e521a |
mptcp: sched: check both directions for backup
The 'mptcp_subflow_context' structure has two items related to the
backup flags:
- 'backup': the subflow has been marked as backup by the other peer
- 'request_bkup': the backup flag has been set by the host
Before this patch, the scheduler was only looking at the 'backup' flag.
That can make sense in some cases, but it looks like that's not what we
wanted for the general use, because either the path-manager was setting
both of them when sending an MP_PRIO, or the receiver was duplicating
the 'backup' flag in the subflow request.
Note that the use of these two flags in the path-manager are going to be
fixed in the next commits, but this change here is needed not to modify
the behaviour.
Fixes:
|
||
|
Naohiro Aota
|
8cd44dd1d1 |
btrfs: zoned: fix zone_unusable accounting on making block group read-write again
When btrfs makes a block group read-only, it adds all free regions in the
block group to space_info->bytes_readonly. That free space excludes
reserved and pinned regions. OTOH, when btrfs makes the block group
read-write again, it moves all the unused regions into the block group's
zone_unusable. That unused region includes reserved and pinned regions.
As a result, it counts too much zone_unusable bytes.
Fortunately (or unfortunately), having erroneous zone_unusable does not
affect the calculation of space_info->bytes_readonly, because free
space (num_bytes in btrfs_dec_block_group_ro) calculation is done based on
the erroneous zone_unusable and it reduces the num_bytes just to cancel the
error.
This behavior can be easily discovered by adding a WARN_ON to check e.g,
"bg->pinned > 0" in btrfs_dec_block_group_ro(), and running fstests test
case like btrfs/282.
Fix it by properly considering pinned and reserved in
btrfs_dec_block_group_ro(). Also, add a WARN_ON and introduce
btrfs_space_info_update_bytes_zone_unusable() to catch a similar mistake.
Fixes:
|
||
|
Linus Torvalds
|
5256184b61 |
Fixes and minor updates for the timer migration code:
- Stop testing the group->parent pointer as it is not guaranteed to be
stable over a chain of operations by design. This includes a warning
which would be nice to have but it produces false positives due to
the racy nature of the check.
- Plug a race between CPUs going in and out of idle and a CPU hotplug
operation. The latter can create and connect a new hierarchy level
which is missed in the concurrent updates of CPUs which go into idle.
As a result the events of such a CPU might not be processed and
timers go stale.
Cure it by splitting the hotplug operation into a prepare and online
callback. The prepare callback is guaranteed to run on an online and
therefore active CPU. This CPU updates the hierarchy and being online
ensures that there is always at least one migrator active which
handles the modified hierarchy correctly when going idle. The online
callback which runs on the incoming CPU then just marks the CPU
active and brings it into operation.
- Improve tracing and polish the code further so it is more obvious
what's going on.
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Merge tag 'timers-urgent-2024-07-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer migration updates from Thomas Gleixner:
"Fixes and minor updates for the timer migration code:
- Stop testing the group->parent pointer as it is not guaranteed to
be stable over a chain of operations by design.
This includes a warning which would be nice to have but it produces
false positives due to the racy nature of the check.
- Plug a race between CPUs going in and out of idle and a CPU hotplug
operation. The latter can create and connect a new hierarchy level
which is missed in the concurrent updates of CPUs which go into
idle. As a result the events of such a CPU might not be processed
and timers go stale.
Cure it by splitting the hotplug operation into a prepare and
online callback. The prepare callback is guaranteed to run on an
online and therefore active CPU. This CPU updates the hierarchy and
being online ensures that there is always at least one migrator
active which handles the modified hierarchy correctly when going
idle. The online callback which runs on the incoming CPU then just
marks the CPU active and brings it into operation.
- Improve tracing and polish the code further so it is more obvious
what's going on"
* tag 'timers-urgent-2024-07-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
timers/migration: Fix grammar in comment
timers/migration: Spare write when nothing changed
timers/migration: Rename childmask by groupmask to make naming more obvious
timers/migration: Read childmask and parent pointer in a single place
timers/migration: Use a single struct for hierarchy walk data
timers/migration: Improve tracing
timers/migration: Move hierarchy setup into cpuhotplug prepare callback
timers/migration: Do not rely always on group->parent
|
||
|
Linus Torvalds
|
7a3fad30fd |
Random number generator updates for Linux 6.11-rc1.
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||
|
Anna-Maria Behnsen
|
835a9a67f5 |
timers/migration: Rename childmask by groupmask to make naming more obvious
childmask in the group reflects the mask that is required to 'reference' this group in the parent. When reading childmask, this might be confusing, as this suggests, that this is the mask of the child of the group. Clarify this by renaming childmask in the tmigr_group and tmc_group by groupmask. Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Link: https://lore.kernel.org/r/20240716-tmigr-fixes-v4-6-757baa7803fe@linutronix.de |
||
|
Linus Torvalds
|
fbc90c042c |
- 875fa64577da ("mm/hugetlb_vmemmap: fix race with speculative PFN
walkers") is known to cause a performance regression (https://lore.kernel.org/all/3acefad9-96e5-4681-8014-827d6be71c7a@linux.ibm.com/T/#mfa809800a7862fb5bdf834c6f71a3a5113eb83ff). Yu has a fix which I'll send along later via the hotfixes branch. - In the series "mm: Avoid possible overflows in dirty throttling" Jan Kara addresses a couple of issues in the writeback throttling code. These fixes are also targetted at -stable kernels. - Ryusuke Konishi's series "nilfs2: fix potential issues related to reserved inodes" does that. This should actually be in the mm-nonmm-stable tree, along with the many other nilfs2 patches. My bad. - More folio conversions from Kefeng Wang in the series "mm: convert to folio_alloc_mpol()" - Kemeng Shi has sent some cleanups to the writeback code in the series "Add helper functions to remove repeated code and improve readability of cgroup writeback" - Kairui Song has made the swap code a little smaller and a little faster in the series "mm/swap: clean up and optimize swap cache index". - In the series "mm/memory: cleanly support zeropage in vm_insert_page*(), vm_map_pages*() and vmf_insert_mixed()" David Hildenbrand has reworked the rather sketchy handling of the use of the zeropage in MAP_SHARED mappings. I don't see any runtime effects here - more a cleanup/understandability/maintainablity thing. - Dev Jain has improved selftests/mm/va_high_addr_switch.c's handling of higher addresses, for aarch64. The (poorly named) series is "Restructure va_high_addr_switch". - The core TLB handling code gets some cleanups and possible slight optimizations in Bang Li's series "Add update_mmu_tlb_range() to simplify code". - Jane Chu has improved the handling of our fake-an-unrecoverable-memory-error testing feature MADV_HWPOISON in the series "Enhance soft hwpoison handling and injection". - Jeff Johnson has sent a billion patches everywhere to add MODULE_DESCRIPTION() to everything. Some landed in this pull. - In the series "mm: cleanup MIGRATE_SYNC_NO_COPY mode", Kefeng Wang has simplified migration's use of hardware-offload memory copying. - Yosry Ahmed performs more folio API conversions in his series "mm: zswap: trivial folio conversions". - In the series "large folios swap-in: handle refault cases first", Chuanhua Han inches us forward in the handling of large pages in the swap code. This is a cleanup and optimization, working toward the end objective of full support of large folio swapin/out. - In the series "mm,swap: cleanup VMA based swap readahead window calculation", Huang Ying has contributed some cleanups and a possible fixlet to his VMA based swap readahead code. - In the series "add mTHP support for anonymous shmem" Baolin Wang has taught anonymous shmem mappings to use multisize THP. By default this is a no-op - users must opt in vis sysfs controls. Dramatic improvements in pagefault latency are realized. - David Hildenbrand has some cleanups to our remaining use of page_mapcount() in the series "fs/proc: move page_mapcount() to fs/proc/internal.h". - David also has some highmem accounting cleanups in the series "mm/highmem: don't track highmem pages manually". - Build-time fixes and cleanups from John Hubbard in the series "cleanups, fixes, and progress towards avoiding "make headers"". - Cleanups and consolidation of the core pagemap handling from Barry Song in the series "mm: introduce pmd|pte_needs_soft_dirty_wp helpers and utilize them". - Lance Yang's series "Reclaim lazyfree THP without splitting" has reduced the latency of the reclaim of pmd-mapped THPs under fairly common circumstances. A 10x speedup is seen in a microbenchmark. It does this by punting to aother CPU but I guess that's a win unless all CPUs are pegged. - hugetlb_cgroup cleanups from Xiu Jianfeng in the series "mm/hugetlb_cgroup: rework on cftypes". - Miaohe Lin's series "Some cleanups for memory-failure" does just that thing. - Is anyone reading this stuff? If so, email me! - Someone other than SeongJae has developed a DAMON feature in Honggyu Kim's series "DAMON based tiered memory management for CXL memory". This adds DAMON features which may be used to help determine the efficiency of our placement of CXL/PCIe attached DRAM. - DAMON user API centralization and simplificatio work in SeongJae Park's series "mm/damon: introduce DAMON parameters online commit function". - In the series "mm: page_type, zsmalloc and page_mapcount_reset()" David Hildenbrand does some maintenance work on zsmalloc - partially modernizing its use of pageframe fields. - Kefeng Wang provides more folio conversions in the series "mm: remove page_maybe_dma_pinned() and page_mkclean()". - More cleanup from David Hildenbrand, this time in the series "mm/memory_hotplug: use PageOffline() instead of PageReserved() for !ZONE_DEVICE". It "enlightens memory hotplug more about PageOffline() pages" and permits the removal of some virtio-mem hacks. - Barry Song's series "mm: clarify folio_add_new_anon_rmap() and __folio_add_anon_rmap()" is a cleanup to the anon folio handling in preparation for mTHP (multisize THP) swapin. - Kefeng Wang's series "mm: improve clear and copy user folio" implements more folio conversions, this time in the area of large folio userspace copying. - The series "Docs/mm/damon/maintaier-profile: document a mailing tool and community meetup series" tells people how to get better involved with other DAMON developers. From SeongJae Park. - A large series ("kmsan: Enable on s390") from Ilya Leoshkevich does that. - David Hildenbrand sends along more cleanups, this time against the migration code. The series is "mm/migrate: move NUMA hinting fault folio isolation + checks under PTL". - Jan Kara has found quite a lot of strangenesses and minor errors in the readahead code. He addresses this in the series "mm: Fix various readahead quirks". - SeongJae Park's series "selftests/damon: test DAMOS tried regions and {min,max}_nr_regions" adds features and addresses errors in DAMON's self testing code. - Gavin Shan has found a userspace-triggerable WARN in the pagecache code. The series "mm/filemap: Limit page cache size to that supported by xarray" addresses this. The series is marked cc:stable. - Chengming Zhou's series "mm/ksm: cmp_and_merge_page() optimizations and cleanup" cleans up and slightly optimizes KSM. - Roman Gushchin has separated the memcg-v1 and memcg-v2 code - lots of code motion. The series (which also makes the memcg-v1 code Kconfigurable) are "mm: memcg: separate legacy cgroup v1 code and put under config option" and "mm: memcg: put cgroup v1-specific memcg data under CONFIG_MEMCG_V1" - Dan Schatzberg's series "Add swappiness argument to memory.reclaim" adds an additional feature to this cgroup-v2 control file. - The series "Userspace controls soft-offline pages" from Jiaqi Yan permits userspace to stop the kernel's automatic treatment of excessive correctable memory errors. In order to permit userspace to monitor and handle this situation. - Kefeng Wang's series "mm: migrate: support poison recover from migrate folio" teaches the kernel to appropriately handle migration from poisoned source folios rather than simply panicing. - SeongJae Park's series "Docs/damon: minor fixups and improvements" does those things. - In the series "mm/zsmalloc: change back to per-size_class lock" Chengming Zhou improves zsmalloc's scalability and memory utilization. - Vivek Kasireddy's series "mm/gup: Introduce memfd_pin_folios() for pinning memfd folios" makes the GUP code use FOLL_PIN rather than bare refcount increments. So these paes can first be moved aside if they reside in the movable zone or a CMA block. - Andrii Nakryiko has added a binary ioctl()-based API to /proc/pid/maps for much faster reading of vma information. The series is "query VMAs from /proc/<pid>/maps". - In the series "mm: introduce per-order mTHP split counters" Lance Yang improves the kernel's presentation of developer information related to multisize THP splitting. - Michael Ellerman has developed the series "Reimplement huge pages without hugepd on powerpc (8xx, e500, book3s/64)". This permits userspace to use all available huge page sizes. - In the series "revert unconditional slab and page allocator fault injection calls" Vlastimil Babka removes a performance-affecting and not very useful feature from slab fault injection. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZp2C+QAKCRDdBJ7gKXxA joTkAQDvjqOoFStqk4GU3OXMYB7WCU/ZQMFG0iuu1EEwTVDZ4QEA8CnG7seek1R3 xEoo+vw0sWWeLV3qzsxnCA1BJ8cTJA8= =z0Lf -----END PGP SIGNATURE----- Merge tag 'mm-stable-2024-07-21-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: - In the series "mm: Avoid possible overflows in dirty throttling" Jan Kara addresses a couple of issues in the writeback throttling code. These fixes are also targetted at -stable kernels. - Ryusuke Konishi's series "nilfs2: fix potential issues related to reserved inodes" does that. This should actually be in the mm-nonmm-stable tree, along with the many other nilfs2 patches. My bad. - More folio conversions from Kefeng Wang in the series "mm: convert to folio_alloc_mpol()" - Kemeng Shi has sent some cleanups to the writeback code in the series "Add helper functions to remove repeated code and improve readability of cgroup writeback" - Kairui Song has made the swap code a little smaller and a little faster in the series "mm/swap: clean up and optimize swap cache index". - In the series "mm/memory: cleanly support zeropage in vm_insert_page*(), vm_map_pages*() and vmf_insert_mixed()" David Hildenbrand has reworked the rather sketchy handling of the use of the zeropage in MAP_SHARED mappings. I don't see any runtime effects here - more a cleanup/understandability/maintainablity thing. - Dev Jain has improved selftests/mm/va_high_addr_switch.c's handling of higher addresses, for aarch64. The (poorly named) series is "Restructure va_high_addr_switch". - The core TLB handling code gets some cleanups and possible slight optimizations in Bang Li's series "Add update_mmu_tlb_range() to simplify code". - Jane Chu has improved the handling of our fake-an-unrecoverable-memory-error testing feature MADV_HWPOISON in the series "Enhance soft hwpoison handling and injection". - Jeff Johnson has sent a billion patches everywhere to add MODULE_DESCRIPTION() to everything. Some landed in this pull. - In the series "mm: cleanup MIGRATE_SYNC_NO_COPY mode", Kefeng Wang has simplified migration's use of hardware-offload memory copying. - Yosry Ahmed performs more folio API conversions in his series "mm: zswap: trivial folio conversions". - In the series "large folios swap-in: handle refault cases first", Chuanhua Han inches us forward in the handling of large pages in the swap code. This is a cleanup and optimization, working toward the end objective of full support of large folio swapin/out. - In the series "mm,swap: cleanup VMA based swap readahead window calculation", Huang Ying has contributed some cleanups and a possible fixlet to his VMA based swap readahead code. - In the series "add mTHP support for anonymous shmem" Baolin Wang has taught anonymous shmem mappings to use multisize THP. By default this is a no-op - users must opt in vis sysfs controls. Dramatic improvements in pagefault latency are realized. - David Hildenbrand has some cleanups to our remaining use of page_mapcount() in the series "fs/proc: move page_mapcount() to fs/proc/internal.h". - David also has some highmem accounting cleanups in the series "mm/highmem: don't track highmem pages manually". - Build-time fixes and cleanups from John Hubbard in the series "cleanups, fixes, and progress towards avoiding "make headers"". - Cleanups and consolidation of the core pagemap handling from Barry Song in the series "mm: introduce pmd|pte_needs_soft_dirty_wp helpers and utilize them". - Lance Yang's series "Reclaim lazyfree THP without splitting" has reduced the latency of the reclaim of pmd-mapped THPs under fairly common circumstances. A 10x speedup is seen in a microbenchmark. It does this by punting to aother CPU but I guess that's a win unless all CPUs are pegged. - hugetlb_cgroup cleanups from Xiu Jianfeng in the series "mm/hugetlb_cgroup: rework on cftypes". - Miaohe Lin's series "Some cleanups for memory-failure" does just that thing. - Someone other than SeongJae has developed a DAMON feature in Honggyu Kim's series "DAMON based tiered memory management for CXL memory". This adds DAMON features which may be used to help determine the efficiency of our placement of CXL/PCIe attached DRAM. - DAMON user API centralization and simplificatio work in SeongJae Park's series "mm/damon: introduce DAMON parameters online commit function". - In the series "mm: page_type, zsmalloc and page_mapcount_reset()" David Hildenbrand does some maintenance work on zsmalloc - partially modernizing its use of pageframe fields. - Kefeng Wang provides more folio conversions in the series "mm: remove page_maybe_dma_pinned() and page_mkclean()". - More cleanup from David Hildenbrand, this time in the series "mm/memory_hotplug: use PageOffline() instead of PageReserved() for !ZONE_DEVICE". It "enlightens memory hotplug more about PageOffline() pages" and permits the removal of some virtio-mem hacks. - Barry Song's series "mm: clarify folio_add_new_anon_rmap() and __folio_add_anon_rmap()" is a cleanup to the anon folio handling in preparation for mTHP (multisize THP) swapin. - Kefeng Wang's series "mm: improve clear and copy user folio" implements more folio conversions, this time in the area of large folio userspace copying. - The series "Docs/mm/damon/maintaier-profile: document a mailing tool and community meetup series" tells people how to get better involved with other DAMON developers. From SeongJae Park. - A large series ("kmsan: Enable on s390") from Ilya Leoshkevich does that. - David Hildenbrand sends along more cleanups, this time against the migration code. The series is "mm/migrate: move NUMA hinting fault folio isolation + checks under PTL". - Jan Kara has found quite a lot of strangenesses and minor errors in the readahead code. He addresses this in the series "mm: Fix various readahead quirks". - SeongJae Park's series "selftests/damon: test DAMOS tried regions and {min,max}_nr_regions" adds features and addresses errors in DAMON's self testing code. - Gavin Shan has found a userspace-triggerable WARN in the pagecache code. The series "mm/filemap: Limit page cache size to that supported by xarray" addresses this. The series is marked cc:stable. - Chengming Zhou's series "mm/ksm: cmp_and_merge_page() optimizations and cleanup" cleans up and slightly optimizes KSM. - Roman Gushchin has separated the memcg-v1 and memcg-v2 code - lots of code motion. The series (which also makes the memcg-v1 code Kconfigurable) are "mm: memcg: separate legacy cgroup v1 code and put under config option" and "mm: memcg: put cgroup v1-specific memcg data under CONFIG_MEMCG_V1" - Dan Schatzberg's series "Add swappiness argument to memory.reclaim" adds an additional feature to this cgroup-v2 control file. - The series "Userspace controls soft-offline pages" from Jiaqi Yan permits userspace to stop the kernel's automatic treatment of excessive correctable memory errors. In order to permit userspace to monitor and handle this situation. - Kefeng Wang's series "mm: migrate: support poison recover from migrate folio" teaches the kernel to appropriately handle migration from poisoned source folios rather than simply panicing. - SeongJae Park's series "Docs/damon: minor fixups and improvements" does those things. - In the series "mm/zsmalloc: change back to per-size_class lock" Chengming Zhou improves zsmalloc's scalability and memory utilization. - Vivek Kasireddy's series "mm/gup: Introduce memfd_pin_folios() for pinning memfd folios" makes the GUP code use FOLL_PIN rather than bare refcount increments. So these paes can first be moved aside if they reside in the movable zone or a CMA block. - Andrii Nakryiko has added a binary ioctl()-based API to /proc/pid/maps for much faster reading of vma information. The series is "query VMAs from /proc/<pid>/maps". - In the series "mm: introduce per-order mTHP split counters" Lance Yang improves the kernel's presentation of developer information related to multisize THP splitting. - Michael Ellerman has developed the series "Reimplement huge pages without hugepd on powerpc (8xx, e500, book3s/64)". This permits userspace to use all available huge page sizes. - In the series "revert unconditional slab and page allocator fault injection calls" Vlastimil Babka removes a performance-affecting and not very useful feature from slab fault injection. * tag 'mm-stable-2024-07-21-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (411 commits) mm/mglru: fix ineffective protection calculation mm/zswap: fix a white space issue mm/hugetlb: fix kernel NULL pointer dereference when migrating hugetlb folio mm/hugetlb: fix possible recursive locking detected warning mm/gup: clear the LRU flag of a page before adding to LRU batch mm/numa_balancing: teach mpol_to_str about the balancing mode mm: memcg1: convert charge move flags to unsigned long long alloc_tag: fix page_ext_get/page_ext_put sequence during page splitting lib: reuse page_ext_data() to obtain codetag_ref lib: add missing newline character in the warning message mm/mglru: fix overshooting shrinker memory mm/mglru: fix div-by-zero in vmpressure_calc_level() mm/kmemleak: replace strncpy() with strscpy() mm, page_alloc: put should_fail_alloc_page() back behing CONFIG_FAIL_PAGE_ALLOC mm, slab: put should_failslab() back behind CONFIG_SHOULD_FAILSLAB mm: ignore data-race in __swap_writepage hugetlbfs: ensure generic_hugetlb_get_unmapped_area() returns higher address than mmap_min_addr mm: shmem: rename mTHP shmem counters mm: swap_state: use folio_alloc_mpol() in __read_swap_cache_async() mm/migrate: putback split folios when numa hint migration fails ... |
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Linus Torvalds
|
8326f5e1a4 |
firewire updates for v6.11
There are many line changes for FireWire subsystem, while there is no functional change for practical use. The most of changes are for code refactoring, some KUnit tests to added helper functions, and new tracepoints events for both the core functions and 1394 OHCI driver. The tracepoints events now cover the verbose logging enabled by debug parameter of firewire-ohci kernel module. The parameter would be removed in any future timing, thus it is now deprecated. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQQE66IEYNDXNBPeGKSsLtaWM8LwEwUCZptYCwAKCRCsLtaWM8Lw E169AQCAR9DZxgflPH03bW8ftfS0crwqdYTUpRYIkwBIXzYl4AD+O2bOB28Xn+U+ W4Inye792FjBCRtStp7PsJyhdVYBUws= =uFe6 -----END PGP SIGNATURE----- Merge tag 'firewire-updates-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394 Pull firewire updates from Takashi Sakamoto: "There are many lines of changes for FireWire subsystem, but there is practically no functional change. Most of the changes are for code refactoring, some KUnit tests to added helper functions, and new tracepoints events for both the core functions and 1394 OHCI driver. The tracepoints events now cover the verbose logging enabled by debug parameter of firewire-ohci kernel module. The parameter would be removed in any future timing, thus it is now deprecated" * tag 'firewire-updates-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394: (32 commits) firewire: core: move copy_port_status() helper function to TP_fast_assign() block Revert "firewire: ohci: use common macro to interpret be32 data in le32 buffer" firewire: ohci: add tracepoints event for data of Self-ID DMA firewire: ohci: use inline functions to operate data of self-ID DMA firewire: ohci: add static inline functions to deserialize for Self-ID DMA operation firewire: ohci: use static function to handle endian issue on PowerPC platform firewire: ohci: use common macro to interpret be32 data in le32 buffer firewire: core: Fix spelling mistakes in tracepoint messages firewire: ohci: add tracepoints event for hardIRQ event firewire: ohci: add support for Linux kernel tracepoints firewire: core: add tracepoints events for completions of packets in isochronous context firewire: core: add tracepoints events for queueing packets of isochronous context firewire: core: add tracepoints events for flushing completions of isochronous context firewire: core: add tracepoints events for flushing of isochronous context firewire: core: add tracepoints events for starting/stopping of isochronous context firewire: core: add tracepoints events for setting channels of multichannel context firewire: core: add tracepoints events for allocation/deallocation of isochronous context firewire: core: undefine macros after use in tracepoints events firewire: core: record card index in tracepoints event for self ID sequence firewire: core: use inline helper functions to serialize phy config packet ... |
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Jason A. Donenfeld
|
9651fcedf7 |
mm: add MAP_DROPPABLE for designating always lazily freeable mappings
The vDSO getrandom() implementation works with a buffer allocated with a
new system call that has certain requirements:
- It shouldn't be written to core dumps.
* Easy: VM_DONTDUMP.
- It should be zeroed on fork.
* Easy: VM_WIPEONFORK.
- It shouldn't be written to swap.
* Uh-oh: mlock is rlimited.
* Uh-oh: mlock isn't inherited by forks.
- It shouldn't reserve actual memory, but it also shouldn't crash when
page faulting in memory if none is available
* Uh-oh: VM_NORESERVE means segfaults.
It turns out that the vDSO getrandom() function has three really nice
characteristics that we can exploit to solve this problem:
1) Due to being wiped during fork(), the vDSO code is already robust to
having the contents of the pages it reads zeroed out midway through
the function's execution.
2) In the absolute worst case of whatever contingency we're coding for,
we have the option to fallback to the getrandom() syscall, and
everything is fine.
3) The buffers the function uses are only ever useful for a maximum of
60 seconds -- a sort of cache, rather than a long term allocation.
These characteristics mean that we can introduce VM_DROPPABLE, which
has the following semantics:
a) It never is written out to swap.
b) Under memory pressure, mm can just drop the pages (so that they're
zero when read back again).
c) It is inherited by fork.
d) It doesn't count against the mlock budget, since nothing is locked.
e) If there's not enough memory to service a page fault, it's not fatal,
and no signal is sent.
This way, allocations used by vDSO getrandom() can use:
VM_DROPPABLE | VM_DONTDUMP | VM_WIPEONFORK | VM_NORESERVE
And there will be no problem with OOMing, crashing on overcommitment,
using memory when not in use, not wiping on fork(), coredumps, or
writing out to swap.
In order to let vDSO getrandom() use this, expose these via mmap(2) as
MAP_DROPPABLE.
Note that this involves removing the MADV_FREE special case from
sort_folio(), which according to Yu Zhao is unnecessary and will simply
result in an extra call to shrink_folio_list() in the worst case. The
chunk removed reenables the swapbacked flag, which we don't want for
VM_DROPPABLE, and we can't conditionalize it here because there isn't a
vma reference available.
Finally, the provided self test ensures that this is working as desired.
Cc: linux-mm@kvack.org
Acked-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
|
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Linus Torvalds
|
4f40c636b2 |
NFS Client Updates for Linux 6.11
New Features:
* Add support for large folios
* Implement rpcrdma generic device removal notification
* Add client support for attribute delegations
* Use a LAYOUTRETURN during reboot recovery to report layoutstats and errors
* Improve throughput for random buffered writes
* Add NVMe support to pnfs/blocklayout
Bugfixes:
* Fix rpcrdma_reqs_reset()
* Avoid soft lockups when using UDP
* Fix an nfs/blocklayout premature PR key unregestration
* Another fix for EXCHGID4_FLAG_USE_PNFS_DS for DS server
* Do not extend writes to the entire folio
* Pass explicit offset and count values to tracepoints
* Fix a race to wake up sleeping SUNRPC sync tasks
* Fix gss_status tracepoint output
Cleanups:
* Add missing MODULE_DESCRIPTION() macros
* Add blocklayout / SCSI layout tracepoints
* Remove asm-generic headers from xprtrdma verbs.c
* Remove unused 'struct mnt_fhstatus'
* Other delegation related cleanups
* Other folio related cleanups
* Other pNFS related cleanups
* Other xprtrdma cleanups
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Merge tag 'nfs-for-6.11-1' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client updates from Anna Schumaker:
"New Features:
- Add support for large folios
- Implement rpcrdma generic device removal notification
- Add client support for attribute delegations
- Use a LAYOUTRETURN during reboot recovery to report layoutstats
and errors
- Improve throughput for random buffered writes
- Add NVMe support to pnfs/blocklayout
Bugfixes:
- Fix rpcrdma_reqs_reset()
- Avoid soft lockups when using UDP
- Fix an nfs/blocklayout premature PR key unregestration
- Another fix for EXCHGID4_FLAG_USE_PNFS_DS for DS server
- Do not extend writes to the entire folio
- Pass explicit offset and count values to tracepoints
- Fix a race to wake up sleeping SUNRPC sync tasks
- Fix gss_status tracepoint output
Cleanups:
- Add missing MODULE_DESCRIPTION() macros
- Add blocklayout / SCSI layout tracepoints
- Remove asm-generic headers from xprtrdma verbs.c
- Remove unused 'struct mnt_fhstatus'
- Other delegation related cleanups
- Other folio related cleanups
- Other pNFS related cleanups
- Other xprtrdma cleanups"
* tag 'nfs-for-6.11-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (63 commits)
SUNRPC: Fixup gss_status tracepoint error output
SUNRPC: Fix a race to wake a sync task
nfs: split nfs_read_folio
nfs: pass explicit offset/count to trace events
nfs: do not extend writes to the entire folio
nfs/blocklayout: add support for NVMe
nfs: remove nfs_page_length
nfs: remove the unused max_deviceinfo_size field from struct pnfs_layoutdriver_type
nfs: don't reuse partially completed requests in nfs_lock_and_join_requests
nfs: move nfs_wait_on_request to write.c
nfs: fold nfs_page_group_lock_subrequests into nfs_lock_and_join_requests
nfs: fold nfs_folio_find_and_lock_request into nfs_lock_and_join_requests
nfs: simplify nfs_folio_find_and_lock_request
nfs: remove nfs_folio_private_request
nfs: remove dead code for the old swap over NFS implementation
NFSv4.1 another fix for EXCHGID4_FLAG_USE_PNFS_DS for DS server
nfs: Block on write congestion
nfs: Properly initialize server->writeback
nfs: Drop pointless check from nfs_commit_release_pages()
nfs/blocklayout: SCSI layout trace points for reservation key reg/unreg
...
|
||
|
Linus Torvalds
|
51ed42a8a1 |
Many cleanups and bug fixes in ext4, especially for the fast commit
feature. Also some performance improvements; in particular, improving IOPS and throughput on fast devices running Async Direct I/O by up to 20% by optimizing jbd2_transaction_committed(). -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEK2m5VNv+CHkogTfJ8vlZVpUNgaMFAmaYiqsACgkQ8vlZVpUN gaOWpQf/d6Y9WGyjeC1jOc+vIBxLgL+X0kbzYkkjGTSIZ7mZJS9X4NMMEtqayJ4f 1zGobcGENc05l4LVxf3uMbDj1aGlHeI9X4GLGaP5s5NcaAl4HKjQ3aFs3MuiJHPj Ol2CebXJx+NKt1lkD8PSPGgaTb5zg+SeZifI+OZ1RpkcKmGnkSNa5NkUNAaBh6dl 5LLXTc2p9NcCwAwDAQSiAJCV35bAZpcp6fwLLaPQ6Eok9HxGcJuYXW2Fict4rbtV mXeogXVIo2bkMcfh6tDchDBrFvORYIA7uBVmaG1LgAMrtEnYxnxnEntD0h6j/bzF Fl4jjQfd8o2uYto/4eo+iY6Z0haxyQ== =rcOo -----END PGP SIGNATURE----- Merge tag 'ext4_for_linus-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 Pull ext4 updates from Ted Ts'o: "Many cleanups and bug fixes in ext4, especially for the fast commit feature. Also some performance improvements; in particular, improving IOPS and throughput on fast devices running Async Direct I/O by up to 20% by optimizing jbd2_transaction_committed()" * tag 'ext4_for_linus-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (40 commits) ext4: make sure the first directory block is not a hole ext4: check dot and dotdot of dx_root before making dir indexed ext4: sanity check for NULL pointer after ext4_force_shutdown jbd2: increase maximum transaction size jbd2: drop pointless shrinker batch initialization jbd2: avoid infinite transaction commit loop jbd2: precompute number of transaction descriptor blocks jbd2: make jbd2_journal_get_max_txn_bufs() internal jbd2: avoid mount failed when commit block is partial submitted ext4: avoid writing unitialized memory to disk in EA inodes ext4: don't track ranges in fast_commit if inode has inlined data ext4: fix possible tid_t sequence overflows ext4: use ext4_update_inode_fsync_trans() helper in inode creation ext4: add missing MODULE_DESCRIPTION() jbd2: add missing MODULE_DESCRIPTION() ext4: use memtostr_pad() for s_volume_name jbd2: speed up jbd2_transaction_committed() ext4: make ext4_da_map_blocks() buffer_head unaware ext4: make ext4_insert_delayed_block() insert multi-blocks ext4: factor out a helper to check the cluster allocation state ... |
||
|
Linus Torvalds
|
2fd4130e53 |
tracing: Trivial updates for 6.11
- Set rtla/osnoise default threshold to 1us from 5us
The 5us default was missing noise that people cared about.
Changing it to 1us makes it work as expected.
- Restructure how sched_switch prev_comm and next_comm was being saved.
The prev_comm was being saved along with the other next fields, and the
next_comm was being saved along with the other prev fields. This is just
a cosmetic change.
- Have the allocation of pid_list use GFP_NOWAIT instead of GFP_KERNEL.
The allocation can happen in irq_work context, but luckily, the size
was by default so large, it was never triggered. But in case it ever is,
use the NOWAIT allocation in the interrupt context.
- Fix some kernel doc errors.
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Merge tag 'trace-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing updates from Steven Rostedt:
"Trivial updates for 6.11:
- Set rtla/osnoise default threshold to 1us from 5us
The 5us default was missing noise that people cared about. Changing
it to 1us makes it work as expected.
- Restructure how sched_switch prev_comm and next_comm was being saved
The prev_comm was being saved along with the other next fields, and
the next_comm was being saved along with the other prev fields.
This is just a cosmetic change.
- Have the allocation of pid_list use GFP_NOWAIT instead of GFP_KERNEL
The allocation can happen in irq_work context, but luckily, the
size was by default so large, it was never triggered. But in case
it ever is, use the NOWAIT allocation in the interrupt context.
- Fix some kernel doc errors"
* tag 'trace-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
trace/pid_list: Change gfp flags in pid_list_fill_irq()
tracing/sched: sched_switch: place prev_comm and next_comm in right order
rtla/osnoise: set the default threshold to 1us
tracing: Fix trace_pid_list_free() kernel-doc
|
||
|
Benjamin Coddington
|
b9fae9f06d |
SUNRPC: Fixup gss_status tracepoint error output
The GSS routine errors are values, not flags.
Fixes:
|
||
|
Linus Torvalds
|
a1b547f0f2 |
for-6.11-tag
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Merge tag 'for-6.11-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba:
"The highlights are new logic behind background block group reclaim,
automatic removal of qgroup after removing a subvolume and new
'rescue=' mount options.
The rest is optimizations, cleanups and refactoring.
User visible features:
- dynamic block group reclaim:
- tunable framework to avoid situations where eager data
allocations prevent creating new metadata chunks due to lack of
unallocated space
- reuse sysfs knob bg_reclaim_threshold (otherwise used only in
zoned mode) for a fixed value threshold
- new on/off sysfs knob "dynamic_reclaim" calculating the value
based on heuristics, aiming to keep spare working space for
relocating chunks but not to needlessly relocate partially
utilized block groups or reclaim newly allocated ones
- stats are exported in sysfs per block group type, files
"reclaim_*"
- this may increase IO load at unexpected times but the corner
case of no allocatable block groups is known to be worse
- automatically remove qgroup of deleted subvolumes:
- adjust qgroup removal conditions, make sure all related
subvolume data are already removed, or return EBUSY, also take
into account setting of sysfs drop_subtree_threshold
- also works in squota mode
- mount option updates: new modes of 'rescue=' that allow to mount
images (read-only) that could have been partially converted by user
space tools
- ignoremetacsums - invalid metadata checksums are ignored
- ignoresuperflags - super block flags that track conversion in
progress (like UUID or checksums)
Core:
- size of struct btrfs_inode is now below 1024 (on a release config),
improved memory packing and other secondary effects
- switch tracking of open inodes from rb-tree to xarray, minor
performance improvement
- reduce number of empty transaction commits when there are no dirty
data/metadata
- memory allocation optimizations (reduced numbers, reordering out of
critical sections)
- extent map structure optimizations and refactoring, more sanity
checks
- more subpage in zoned mode preparations or fixes
- general snapshot code cleanups, improvements and documentation
- tree-checker updates: more file extent ram_bytes fixes, continued
- raid-stripe-tree update (not backward compatible):
- remove extent encoding field from the structure, can be inferred
from other information
- requires btrfs-progs 6.9.1 or newer
- cleanups and refactoring
- error message updates
- error handling improvements
- return type and parameter cleanups and improvements"
* tag 'for-6.11-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (152 commits)
btrfs: fix extent map use-after-free when adding pages to compressed bio
btrfs: fix bitmap leak when loading free space cache on duplicate entry
btrfs: remove the BUG_ON() inside extent_range_clear_dirty_for_io()
btrfs: move extent_range_clear_dirty_for_io() into inode.c
btrfs: enhance compression error messages
btrfs: fix data race when accessing the last_trans field of a root
btrfs: rename the extra_gfp parameter of btrfs_alloc_page_array()
btrfs: remove the extra_gfp parameter from btrfs_alloc_folio_array()
btrfs: introduce new "rescue=ignoresuperflags" mount option
btrfs: introduce new "rescue=ignoremetacsums" mount option
btrfs: output the unrecognized super block flags as hex
btrfs: remove unused Opt enums
btrfs: tree-checker: add extra ram_bytes and disk_num_bytes check
btrfs: fix the ram_bytes assignment for truncated ordered extents
btrfs: make validate_extent_map() catch ram_bytes mismatch
btrfs: ignore incorrect btrfs_file_extent_item::ram_bytes
btrfs: cleanup the bytenr usage inside btrfs_extent_item_to_extent_map()
btrfs: fix typo in error message in btrfs_validate_super()
btrfs: move the direct IO code into its own file
btrfs: pass a btrfs_inode to btrfs_set_prop()
...
|
||
|
Linus Torvalds
|
586f14a6a1 |
Changes since last update:
- More folio conversions for compressed inodes;
- Stream decompressor (LZMA/DEFLATE/ZSTD) cleanups;
- Minor tracepoint cleanup.
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Merge tag 'erofs-for-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
Pull erofs updates from Gao Xiang:
"Updates for folio conversions for compressed inodes: While large folio
support for compressed data could work now, it remains disabled since
the stress test could hang due to page migration in a few hours after
enabling it. I need more time to investigate further before enabling
this feature.
Additionally, clean up stream decompressors and tracepoints for
simplicity.
Summary:
- More folio conversions for compressed inodes
- Stream decompressor (LZMA/DEFLATE/ZSTD) cleanups
- Minor tracepoint cleanup"
* tag 'erofs-for-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
erofs: silence uninitialized variable warning in z_erofs_scan_folio()
erofs: avoid refcounting short-lived pages
erofs: get rid of z_erofs_map_blocks_iter_* tracepoints
erofs: tidy up stream decompressors
erofs: refine z_erofs_{init,exit}_subsystem()
erofs: move each decompressor to its own source file
erofs: tidy up `struct z_erofs_bvec`
erofs: teach z_erofs_scan_folios() to handle multi-page folios
erofs: convert z_erofs_read_fragment() to folios
erofs: convert z_erofs_pcluster_readmore() to folios
|
||
|
Linus Torvalds
|
51835949dd |
Networking changes for 6.11. Not much excitement - a handful of large
patchsets (devmem among them) did not make it in time.
Core & protocols
----------------
- Use local_lock in addition to local_bh_disable() to protect per-CPU
resources in networking, a step closer for local_bh_disable() not
to act as a big lock on PREEMPT_RT.
- Use flex array for netdevice priv area, ensure its cache alignment.
- Add a sysctl knob to allow user to specify a default rto_min at socket
init time. Bit of a big hammer but multiple companies were
independently carrying such patch downstream so clearly it's useful.
- Support scheduling transmission of packets based on CLOCK_TAI.
- Un-pin TCP TIMEWAIT timer to avoid it firing on CPUs later cordoned off
using cpusets.
- Support multiple L2TPv3 UDP tunnels using the same 5-tuple address.
- Allow configuration of multipath hash seed, to both allow synchronizing
hashing of two routers, and preventing partial accidental sync.
- Improve TCP compliance with RFC 9293 for simultaneous connect().
- Support sending NAT keepalives in IPsec ESP in UDP states. Userspace
IKE daemon had to do this before, but the kernel can better keep
track of it.
- Support sending supervision HSR frames with MAC addresses stored in
ProxyNodeTable when RedBox (i.e. HSR-SAN) is enabled.
- Introduce IPPROTO_SMC for selecting SMC when socket is created.
- Allow UDP GSO transmit from devices with no checksum offload.
- openvswitch: add packet sampling via psample, separating the sampled
traffic from "upcall" packets sent to user space for forwarding.
- nf_tables: shrink memory consumption for transaction objects.
Things we sprinkled into general kernel code
--------------------------------------------
- Power Sequencing subsystem (used by Qualcomm Bluetooth driver
for QCA6390).
- Add IRQ information in sysfs for auxiliary bus.
- Introduce guard definition for local_lock.
- Add aligned flavor of __cacheline_group_{begin, end}() markings for
grouping fields in structures.
BPF
---
- Notify user space (via epoll) when a struct_ops object is getting
detached/unregistered.
- Add new kfuncs for a generic, open-coded bits iterator.
- Enable BPF programs to declare arrays of kptr, bpf_rb_root, and
bpf_list_head.
- Support resilient split BTF which cuts down on duplication and makes
BTF as compact as possible WRT BTF from modules.
- Add support for dumping kfunc prototypes from BTF which enables both
detecting as well as dumping compilable prototypes for kfuncs.
- riscv64 BPF JIT improvements in particular to add 12-argument support
for BPF trampolines and to utilize bpf_prog_pack for the latter.
- Add the capability to offload the netfilter flowtable in XDP layer
through kfuncs.
Driver API
----------
- Allow users to configure IRQ tresholds between which automatic IRQ
moderation can choose.
- Expand Power Sourcing (PoE) status with power, class and failure
reason. Support setting power limits.
- Track additional RSS contexts in the core, make sure configuration
changes don't break them.
- Support IPsec crypto offload for IPv6 ESP and IPv4 UDP-encapsulated ESP
data paths.
- Support updating firmware on SFP modules.
Tests and tooling
-----------------
- mptcp: use net/lib.sh to manage netns.
- TCP-AO and TCP-MD5: replace debug prints used by tests with
tracepoints.
- openvswitch: make test self-contained (don't depend on OvS CLI tools).
Drivers
-------
- Ethernet high-speed NICs:
- Broadcom (bnxt):
- increase the max total outstanding PTP TX packets to 4
- add timestamping statistics support
- implement netdev_queue_mgmt_ops
- support new RSS context API
- Intel (100G, ice, idpf):
- implement FEC statistics and dumping signal quality indicators
- support E825C products (with 56Gbps PHYs)
- nVidia/Mellanox:
- support HW-GRO
- mlx4/mlx5: support per-queue statistics via netlink
- obey the max number of EQs setting in sub-functions
- AMD/Solarflare:
- support new RSS context API
- AMD/Pensando:
- ionic: rework fix for doorbell miss to lower overhead
and skip it on new HW
- Wangxun:
- txgbe: support Flow Director perfect filters
- Ethernet NICs consumer, embedded and virtual:
- Add driver for Tehuti Networks TN40xx chips
- Add driver for Meta's internal NIC chips
- Add driver for Ethernet MAC on Airoha EN7581 SoCs
- Add driver for Renesas Ethernet-TSN devices
- Google cloud vNIC:
- flow steering support
- Microsoft vNIC:
- support page sizes other than 4KB on ARM64
- vmware vNIC:
- support latency measurement (update to version 9)
- VirtIO net:
- support for Byte Queue Limits
- support configuring thresholds for automatic IRQ moderation
- support for AF_XDP Rx zero-copy
- Synopsys (stmmac):
- support for STM32MP13 SoC
- let platforms select the right PCS implementation
- TI:
- icssg-prueth: add multicast filtering support
- icssg-prueth: enable PTP timestamping and PPS
- Renesas:
- ravb: improve Rx performance 30-400% by using page pool,
theaded NAPI and timer-based IRQ coalescing
- ravb: add MII support for R-Car V4M
- Cadence (macb):
- macb: add ARP support to Wake-On-LAN
- Cortina:
- use phylib for RX and TX pause configuration
- Ethernet switches:
- nVidia/Mellanox:
- support configuration of multipath hash seed
- report more accurate max MTU
- use page_pool to improve Rx performance
- MediaTek:
- mt7530: add support for bridge port isolation
- Qualcomm:
- qca8k: add support for bridge port isolation
- Microchip:
- lan9371/2: add 100BaseTX PHY support
- NXP:
- vsc73xx: implement VLAN operations
- Ethernet PHYs:
- aquantia: enable support for aqr115c
- aquantia: add support for PHY LEDs
- realtek: add support for rtl8224 2.5Gbps PHY
- xpcs: add memory-mapped device support
- add BroadR-Reach link mode and support in Broadcom's PHY driver
- CAN:
- add document for ISO 15765-2 protocol support
- mcp251xfd: workaround for erratum DS80000789E, use timestamps
to catch when device returns incorrect FIFO status
- WiFi:
- mac80211/cfg80211:
- parse Transmit Power Envelope (TPE) data in mac80211 instead of
in drivers
- improvements for 6 GHz regulatory flexibility
- multi-link improvements
- support multiple radios per wiphy
- remove DEAUTH_NEED_MGD_TX_PREP flag
- Intel (iwlwifi):
- bump FW API to 91 for BZ/SC devices
- report 64-bit radiotap timestamp
- enable P2P low latency by default
- handle Transmit Power Envelope (TPE) advertised by AP
- remove support for older FW for new devices
- fast resume (keeping the device configured)
- mvm: re-enable Multi-Link Operation (MLO)
- aggregation (A-MSDU) optimizations
- MediaTek (mt76):
- mt7925 Multi-Link Operation (MLO) support
- Qualcomm (ath10k):
- LED support for various chipsets
- Qualcomm (ath12k):
- remove unsupported Tx monitor handling
- support channel 2 in 6 GHz band
- support Spatial Multiplexing Power Save (SMPS) in 6 GHz band
- supprt multiple BSSID (MBSSID) and Enhanced Multi-BSSID
Advertisements (EMA)
- support dynamic VLAN
- add panic handler for resetting the firmware state
- DebugFS support for datapath statistics
- WCN7850: support for Wake on WLAN
- Microchip (wilc1000):
- read MAC address during probe to make it visible to user space
- suspend/resume improvements
- TI (wl18xx):
- support newer firmware versions
- RealTek (rtw89):
- preparation for RTL8852BE-VT support
- Wake on WLAN support for WiFi 6 chips
- 36-bit PCI DMA support
- RealTek (rtlwifi):
- RTL8192DU support
- Broadcom (brcmfmac):
- Management Frame Protection support (to enable WPA3)
- Bluetooth:
- qualcomm: use the power sequencer for QCA6390
- btusb: mediatek: add ISO data transmission functions
- hci_bcm4377: add BCM4388 support
- btintel: add support for BlazarU core
- btintel: add support for Whale Peak2
- btnxpuart: add support for AW693 A1 chipset
- btnxpuart: add support for IW615 chipset
- btusb: add Realtek RTL8852BE support ID 0x13d3:0x3591
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"Not much excitement - a handful of large patchsets (devmem among them)
did not make it in time.
Core & protocols:
- Use local_lock in addition to local_bh_disable() to protect per-CPU
resources in networking, a step closer for local_bh_disable() not
to act as a big lock on PREEMPT_RT
- Use flex array for netdevice priv area, ensure its cache alignment
- Add a sysctl knob to allow user to specify a default rto_min at
socket init time. Bit of a big hammer but multiple companies were
independently carrying such patch downstream so clearly it's useful
- Support scheduling transmission of packets based on CLOCK_TAI
- Un-pin TCP TIMEWAIT timer to avoid it firing on CPUs later cordoned
off using cpusets
- Support multiple L2TPv3 UDP tunnels using the same 5-tuple address
- Allow configuration of multipath hash seed, to both allow
synchronizing hashing of two routers, and preventing partial
accidental sync
- Improve TCP compliance with RFC 9293 for simultaneous connect()
- Support sending NAT keepalives in IPsec ESP in UDP states.
Userspace IKE daemon had to do this before, but the kernel can
better keep track of it
- Support sending supervision HSR frames with MAC addresses stored in
ProxyNodeTable when RedBox (i.e. HSR-SAN) is enabled
- Introduce IPPROTO_SMC for selecting SMC when socket is created
- Allow UDP GSO transmit from devices with no checksum offload
- openvswitch: add packet sampling via psample, separating the
sampled traffic from "upcall" packets sent to user space for
forwarding
- nf_tables: shrink memory consumption for transaction objects
Things we sprinkled into general kernel code:
- Power Sequencing subsystem (used by Qualcomm Bluetooth driver for
QCA6390) [ Already merged separately - Linus ]
- Add IRQ information in sysfs for auxiliary bus
- Introduce guard definition for local_lock
- Add aligned flavor of __cacheline_group_{begin, end}() markings for
grouping fields in structures
BPF:
- Notify user space (via epoll) when a struct_ops object is getting
detached/unregistered
- Add new kfuncs for a generic, open-coded bits iterator
- Enable BPF programs to declare arrays of kptr, bpf_rb_root, and
bpf_list_head
- Support resilient split BTF which cuts down on duplication and
makes BTF as compact as possible WRT BTF from modules
- Add support for dumping kfunc prototypes from BTF which enables
both detecting as well as dumping compilable prototypes for kfuncs
- riscv64 BPF JIT improvements in particular to add 12-argument
support for BPF trampolines and to utilize bpf_prog_pack for the
latter
- Add the capability to offload the netfilter flowtable in XDP layer
through kfuncs
Driver API:
- Allow users to configure IRQ tresholds between which automatic IRQ
moderation can choose
- Expand Power Sourcing (PoE) status with power, class and failure
reason. Support setting power limits
- Track additional RSS contexts in the core, make sure configuration
changes don't break them
- Support IPsec crypto offload for IPv6 ESP and IPv4 UDP-encapsulated
ESP data paths
- Support updating firmware on SFP modules
Tests and tooling:
- mptcp: use net/lib.sh to manage netns
- TCP-AO and TCP-MD5: replace debug prints used by tests with
tracepoints
- openvswitch: make test self-contained (don't depend on OvS CLI
tools)
Drivers:
- Ethernet high-speed NICs:
- Broadcom (bnxt):
- increase the max total outstanding PTP TX packets to 4
- add timestamping statistics support
- implement netdev_queue_mgmt_ops
- support new RSS context API
- Intel (100G, ice, idpf):
- implement FEC statistics and dumping signal quality indicators
- support E825C products (with 56Gbps PHYs)
- nVidia/Mellanox:
- support HW-GRO
- mlx4/mlx5: support per-queue statistics via netlink
- obey the max number of EQs setting in sub-functions
- AMD/Solarflare:
- support new RSS context API
- AMD/Pensando:
- ionic: rework fix for doorbell miss to lower overhead and
skip it on new HW
- Wangxun:
- txgbe: support Flow Director perfect filters
- Ethernet NICs consumer, embedded and virtual:
- Add driver for Tehuti Networks TN40xx chips
- Add driver for Meta's internal NIC chips
- Add driver for Ethernet MAC on Airoha EN7581 SoCs
- Add driver for Renesas Ethernet-TSN devices
- Google cloud vNIC:
- flow steering support
- Microsoft vNIC:
- support page sizes other than 4KB on ARM64
- vmware vNIC:
- support latency measurement (update to version 9)
- VirtIO net:
- support for Byte Queue Limits
- support configuring thresholds for automatic IRQ moderation
- support for AF_XDP Rx zero-copy
- Synopsys (stmmac):
- support for STM32MP13 SoC
- let platforms select the right PCS implementation
- TI:
- icssg-prueth: add multicast filtering support
- icssg-prueth: enable PTP timestamping and PPS
- Renesas:
- ravb: improve Rx performance 30-400% by using page pool,
theaded NAPI and timer-based IRQ coalescing
- ravb: add MII support for R-Car V4M
- Cadence (macb):
- macb: add ARP support to Wake-On-LAN
- Cortina:
- use phylib for RX and TX pause configuration
- Ethernet switches:
- nVidia/Mellanox:
- support configuration of multipath hash seed
- report more accurate max MTU
- use page_pool to improve Rx performance
- MediaTek:
- mt7530: add support for bridge port isolation
- Qualcomm:
- qca8k: add support for bridge port isolation
- Microchip:
- lan9371/2: add 100BaseTX PHY support
- NXP:
- vsc73xx: implement VLAN operations
- Ethernet PHYs:
- aquantia: enable support for aqr115c
- aquantia: add support for PHY LEDs
- realtek: add support for rtl8224 2.5Gbps PHY
- xpcs: add memory-mapped device support
- add BroadR-Reach link mode and support in Broadcom's PHY driver
- CAN:
- add document for ISO 15765-2 protocol support
- mcp251xfd: workaround for erratum DS80000789E, use timestamps to
catch when device returns incorrect FIFO status
- WiFi:
- mac80211/cfg80211:
- parse Transmit Power Envelope (TPE) data in mac80211 instead
of in drivers
- improvements for 6 GHz regulatory flexibility
- multi-link improvements
- support multiple radios per wiphy
- remove DEAUTH_NEED_MGD_TX_PREP flag
- Intel (iwlwifi):
- bump FW API to 91 for BZ/SC devices
- report 64-bit radiotap timestamp
- enable P2P low latency by default
- handle Transmit Power Envelope (TPE) advertised by AP
- remove support for older FW for new devices
- fast resume (keeping the device configured)
- mvm: re-enable Multi-Link Operation (MLO)
- aggregation (A-MSDU) optimizations
- MediaTek (mt76):
- mt7925 Multi-Link Operation (MLO) support
- Qualcomm (ath10k):
- LED support for various chipsets
- Qualcomm (ath12k):
- remove unsupported Tx monitor handling
- support channel 2 in 6 GHz band
- support Spatial Multiplexing Power Save (SMPS) in 6 GHz band
- supprt multiple BSSID (MBSSID) and Enhanced Multi-BSSID
Advertisements (EMA)
- support dynamic VLAN
- add panic handler for resetting the firmware state
- DebugFS support for datapath statistics
- WCN7850: support for Wake on WLAN
- Microchip (wilc1000):
- read MAC address during probe to make it visible to user space
- suspend/resume improvements
- TI (wl18xx):
- support newer firmware versions
- RealTek (rtw89):
- preparation for RTL8852BE-VT support
- Wake on WLAN support for WiFi 6 chips
- 36-bit PCI DMA support
- RealTek (rtlwifi):
- RTL8192DU support
- Broadcom (brcmfmac):
- Management Frame Protection support (to enable WPA3)
- Bluetooth:
- qualcomm: use the power sequencer for QCA6390
- btusb: mediatek: add ISO data transmission functions
- hci_bcm4377: add BCM4388 support
- btintel: add support for BlazarU core
- btintel: add support for Whale Peak2
- btnxpuart: add support for AW693 A1 chipset
- btnxpuart: add support for IW615 chipset
- btusb: add Realtek RTL8852BE support ID 0x13d3:0x3591"
* tag 'net-next-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1589 commits)
eth: fbnic: Fix spelling mistake "tiggerring" -> "triggering"
tcp: Replace strncpy() with strscpy()
wifi: ath12k: fix build vs old compiler
tcp: Don't access uninit tcp_rsk(req)->ao_keyid in tcp_create_openreq_child().
eth: fbnic: Write the TCAM tables used for RSS control and Rx to host
eth: fbnic: Add L2 address programming
eth: fbnic: Add basic Rx handling
eth: fbnic: Add basic Tx handling
eth: fbnic: Add link detection
eth: fbnic: Add initial messaging to notify FW of our presence
eth: fbnic: Implement Rx queue alloc/start/stop/free
eth: fbnic: Implement Tx queue alloc/start/stop/free
eth: fbnic: Allocate a netdevice and napi vectors with queues
eth: fbnic: Add FW communication mechanism
eth: fbnic: Add message parsing for FW messages
eth: fbnic: Add register init to set PCIe/Ethernet device config
eth: fbnic: Allocate core device specific structures and devlink interface
eth: fbnic: Add scaffolding for Meta's NIC driver
PCI: Add Meta Platforms vendor ID
net/sched: cls_flower: propagate tca[TCA_OPTIONS] to NL_REQ_ATTR_CHECK
...
|
||
|
Linus Torvalds
|
3e78198862 |
for-6.11/block-20240710
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Merge tag 'for-6.11/block-20240710' of git://git.kernel.dk/linux
Pull block updates from Jens Axboe:
- NVMe updates via Keith:
- Device initialization memory leak fixes (Keith)
- More constants defined (Weiwen)
- Target debugfs support (Hannes)
- PCIe subsystem reset enhancements (Keith)
- Queue-depth multipath policy (Redhat and PureStorage)
- Implement get_unique_id (Christoph)
- Authentication error fixes (Gaosheng)
- MD updates via Song
- sync_action fix and refactoring (Yu Kuai)
- Various small fixes (Christoph Hellwig, Li Nan, and Ofir Gal, Yu
Kuai, Benjamin Marzinski, Christophe JAILLET, Yang Li)
- Fix loop detach/open race (Gulam)
- Fix lower control limit for blk-throttle (Yu)
- Add module descriptions to various drivers (Jeff)
- Add support for atomic writes for block devices, and statx reporting
for same. Includes SCSI and NVMe (John, Prasad, Alan)
- Add IO priority information to block trace points (Dongliang)
- Various zone improvements and tweaks (Damien)
- mq-deadline tag reservation improvements (Bart)
- Ignore direct reclaim swap writes in writeback throttling (Baokun)
- Block integrity improvements and fixes (Anuj)
- Add basic support for rust based block drivers. Has a dummy null_blk
variant for now (Andreas)
- Series converting driver settings to queue limits, and cleanups and
fixes related to that (Christoph)
- Cleanup for poking too deeply into the bvec internals, in preparation
for DMA mapping API changes (Christoph)
- Various minor tweaks and fixes (Jiapeng, John, Kanchan, Mikulas,
Ming, Zhu, Damien, Christophe, Chaitanya)
* tag 'for-6.11/block-20240710' of git://git.kernel.dk/linux: (206 commits)
floppy: add missing MODULE_DESCRIPTION() macro
loop: add missing MODULE_DESCRIPTION() macro
ublk_drv: add missing MODULE_DESCRIPTION() macro
xen/blkback: add missing MODULE_DESCRIPTION() macro
block/rnbd: Constify struct kobj_type
block: take offset into account in blk_bvec_map_sg again
block: fix get_max_segment_size() warning
loop: Don't bother validating blocksize
virtio_blk: Don't bother validating blocksize
null_blk: Don't bother validating blocksize
block: Validate logical block size in blk_validate_limits()
virtio_blk: Fix default logical block size fallback
nvmet-auth: fix nvmet_auth hash error handling
nvme: implement ->get_unique_id
block: pass a phys_addr_t to get_max_segment_size
block: add a bvec_phys helper
blk-lib: check for kill signal in ioctl BLKZEROOUT
block: limit the Write Zeroes to manually writing zeroes fallback
block: refacto blkdev_issue_zeroout
block: move read-only and supported checks into (__)blkdev_issue_zeroout
...
|
||
|
Tio Zhang
|
a325742505 |
tracing/sched: sched_switch: place prev_comm and next_comm in right order
Switch the order of prev_comm and next_comm in sched_switch's code to align with its printing order. Cc: <mhiramat@kernel.org> Signed-off-by: Tio Zhang <tiozhang@didiglobal.com> Link: https://lore.kernel.org/20240703033353.GA2833@didi-ThinkCentre-M930t-N000 Reviewed-by: Madadi Vineeth Reddy <vineethr@linux.ibm.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Jakub Kicinski
|
e5abd12f3d |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: drivers/net/ethernet/broadcom/bnxt/bnxt.c |
||
|
Linus Torvalds
|
975f3b6da1 |
for-6.10-rc7-tag
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Merge tag 'for-6.10-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
"Fix a regression in extent map shrinker behaviour.
In the past weeks we got reports from users that there are huge
latency spikes or freezes. This was bisected to newly added shrinker
of extent maps (it was added to fix a build up of the structures in
memory).
I'm assuming that the freezes would happen to many users after release
so I'd like to get it merged now so it's in 6.10. Although the diff
size is not small the changes are relatively straightforward, the
reporters verified the fixes and we did testing on our side.
The fixes:
- adjust behaviour under memory pressure and check lock or scheduling
conditions, bail out if needed
- synchronize tracking of the scanning progress so inode ranges are
not skipped or work duplicated
- do a delayed iput when scanning a root so evicting an inode does
not slow things down in case of lots of dirty data, also fix
lockdep warning, a deadlock could happen when writing the dirty
data would need to start a transaction"
* tag 'for-6.10-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: avoid races when tracking progress for extent map shrinking
btrfs: stop extent map shrinker if reschedule is needed
btrfs: use delayed iput during extent map shrinking
|
||
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Takashi Sakamoto
|
06dcc4c9ba |
firewire: core: move copy_port_status() helper function to TP_fast_assign() block
It would be possible to put any statement in TP_fast_assign(). This commit obsoletes the helper function and put its statements to TP_fast_assign() for the code simplicity. Link: https://lore.kernel.org/r/20240712003010.87341-1-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
||
|
Jakub Kicinski
|
7c8267275d |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: net/sched/act_ct.c |
||
|
Filipe Manana
|
4484940514 |
btrfs: avoid races when tracking progress for extent map shrinking
We store the progress (root and inode numbers) of the extent map shrinker in fs_info without any synchronization but we can have multiple tasks calling into the shrinker during memory allocations when there's enough memory pressure for example. This can result in a task A reading fs_info->extent_map_shrinker_last_ino after another task B updates it, and task A reading fs_info->extent_map_shrinker_last_root before task B updates it, making task A see an odd state that isn't necessarily harmful but may make it skip certain inode ranges or do more work than necessary by going over the same inodes again. These unprotected accesses would also trigger warnings from tools like KCSAN. So add a lock to protect access to these progress fields. Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Filipe Manana <fdmanana@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
||
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Qu Wenruo
|
c77a8c6100 |
btrfs: remove extent_map::block_start member
The member extent_map::block_start can be calculated from extent_map::disk_bytenr + extent_map::offset for regular extents. And otherwise just extent_map::disk_bytenr. And this is already validated by the validate_extent_map(). Now we can remove the member. However there is a special case in btrfs_create_dio_extent() where we for NOCOW/PREALLOC ordered extents cannot directly use the resulting btrfs_file_extent, as btrfs_split_ordered_extent() cannot handle them yet. So for that call site, we pass file_extent->disk_bytenr + file_extent->num_bytes as disk_bytenr for the ordered extent, and 0 for offset. Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
||
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Qu Wenruo
|
e28b851ed9 |
btrfs: remove extent_map::block_len member
The extent_map::block_len is either extent_map::len (non-compressed extent) or extent_map::disk_num_bytes (compressed extent). Since we already have sanity checks to do the cross-checks between the new and old members, we can drop the old extent_map::block_len now. For most call sites, they can manually select extent_map::len or extent_map::disk_num_bytes, since most if not all of them have checked if the extent is compressed. Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
||
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Qu Wenruo
|
4aa7b5d178 |
btrfs: remove extent_map::orig_start member
Since we have extent_map::offset, the old extent_map::orig_start is just extent_map::start - extent_map::offset for non-hole/inline extents. And since the new extent_map::offset is already verified by validate_extent_map() while the old orig_start is not, let's just remove the old member from all call sites. Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
||
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Johannes Weiner
|
3a3b7fec39 |
mm: remove CONFIG_MEMCG_KMEM
CONFIG_MEMCG_KMEM used to be a user-visible option for whether slab tracking is enabled. It has been default-enabled and equivalent to CONFIG_MEMCG for almost a decade. We've only grown more kernel memory accounting sites since, and there is no imaginable cgroup usecase going forward that wants to track user pages but not the multitude of user-drivable kernel allocations. Link: https://lkml.kernel.org/r/20240701153148.452230-1-hannes@cmpxchg.org Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Roman Gushchin <roman.gushchin@linux.dev> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Shakeel Butt <shakeel.butt@linux.dev> Acked-by: David Hildenbrand <david@redhat.com> Cc: Muchun Song <muchun.song@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
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Hongzhen Luo
|
1c076f1f4d |
erofs: get rid of z_erofs_map_blocks_iter_* tracepoints
Consolidate them under erofs_map_blocks_* for simplicity since we have many other ways to know if a given inode is compressed or not. Signed-off-by: Hongzhen Luo <hongzhen@linux.alibaba.com> Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com> Link: https://lore.kernel.org/r/20240710083459.208362-1-hongzhen@linux.alibaba.com Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com> |
||
|
Chuck Lever
|
3f4eb9ff92 |
xprtrdma: Handle device removal outside of the CM event handler
Wait for all disconnects to complete to ensure the transport has divested all of its hardware resources before the underlying RDMA device can be removed. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> |
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Chuck Lever
|
7e86845a03 |
rpcrdma: Implement generic device removal
Commit
|
||
|
Christian Brauner
|
eeb17984e8
|
Merge patch series "cachefiles: random bugfixes"
libaokun@huaweicloud.com <libaokun@huaweicloud.com> says: This is the third version of this patch series, in which another patch set is subsumed into this one to avoid confusing the two patch sets. (https://patchwork.kernel.org/project/linux-fsdevel/list/?series=854914) We've been testing ondemand mode for cachefiles since January, and we're almost done. We hit a lot of issues during the testing period, and this patch series fixes some of the issues. The patches have passed internal testing without regression. The following is a brief overview of the patches, see the patches for more details. Patch 1-2: Add fscache_try_get_volume() helper function to avoid fscache_volume use-after-free on cache withdrawal. Patch 3: Fix cachefiles_lookup_cookie() and cachefiles_withdraw_cache() concurrency causing cachefiles_volume use-after-free. Patch 4: Propagate error codes returned by vfs_getxattr() to avoid endless loops. Patch 5-7: A read request waiting for reopen could be closed maliciously before the reopen worker is executing or waiting to be scheduled. So ondemand_object_worker() may be called after the info and object and even the cache have been freed and trigger use-after-free. So use cancel_work_sync() in cachefiles_ondemand_clean_object() to cancel the reopen worker or wait for it to finish. Since it makes no sense to wait for the daemon to complete the reopen request, to avoid this pointless operation blocking cancel_work_sync(), Patch 1 avoids request generation by the DROPPING state when the request has not been sent, and Patch 2 flushes the requests of the current object before cancel_work_sync(). Patch 8: Cyclic allocation of msg_id to avoid msg_id reuse misleading the daemon to cause hung. Patch 9: Hold xas_lock during polling to avoid dereferencing reqs causing use-after-free. This issue was triggered frequently in our tests, and we found that anolis 5.10 had fixed it. So to avoid failing the test, this patch is pushed upstream as well. Baokun Li (7): netfs, fscache: export fscache_put_volume() and add fscache_try_get_volume() cachefiles: fix slab-use-after-free in fscache_withdraw_volume() cachefiles: fix slab-use-after-free in cachefiles_withdraw_cookie() cachefiles: propagate errors from vfs_getxattr() to avoid infinite loop cachefiles: stop sending new request when dropping object cachefiles: cancel all requests for the object that is being dropped cachefiles: cyclic allocation of msg_id to avoid reuse Hou Tao (1): cachefiles: wait for ondemand_object_worker to finish when dropping object Jingbo Xu (1): cachefiles: add missing lock protection when polling fs/cachefiles/cache.c | 45 ++++++++++++++++++++++++++++- fs/cachefiles/daemon.c | 4 +-- fs/cachefiles/internal.h | 3 ++ fs/cachefiles/ondemand.c | 52 ++++++++++++++++++++++++++++++---- fs/cachefiles/volume.c | 1 - fs/cachefiles/xattr.c | 5 +++- fs/netfs/fscache_volume.c | 14 +++++++++ fs/netfs/internal.h | 2 -- include/linux/fscache-cache.h | 6 ++++ include/trace/events/fscache.h | 4 +++ 10 files changed, 123 insertions(+), 13 deletions(-) Link: https://lore.kernel.org/r/20240628062930.2467993-1-libaokun@huaweicloud.com Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
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Honggyu Kim
|
ced816a76b |
mm/migrate: add MR_DAMON to migrate_reason
The current patch series introduces DAMON based migration across NUMA nodes so it'd be better to have a new migrate_reason in trace events. Link: https://lkml.kernel.org/r/20240614030010.751-5-honggyu.kim@sk.com Signed-off-by: Honggyu Kim <honggyu.kim@sk.com> Reviewed-by: SeongJae Park <sj@kernel.org> Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Gregory Price <gregory.price@memverge.com> Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com> Cc: Hyeongtak Ji <hyeongtak.ji@sk.com> Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Rakie Kim <rakie.kim@sk.com> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Takashi Sakamoto
|
526e21a2aa |
firewire: ohci: add tracepoints event for data of Self-ID DMA
In 1394 OHCI, the SelfIDComplete event occurs when the hardware has
finished transmitting all of the self ID packets received during the bus
initialization process to the host memory by DMA.
This commit adds a tracepoints event for this event to trace the timing
and packet data of Self-ID DMA. It is the part of following tracepoints
events helpful to debug some events at bus reset; e.g. the issue addressed
at a commit
|
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Baokun Li
|
522018a0de |
cachefiles: fix slab-use-after-free in fscache_withdraw_volume()
We got the following issue in our fault injection stress test:
==================================================================
BUG: KASAN: slab-use-after-free in fscache_withdraw_volume+0x2e1/0x370
Read of size 4 at addr ffff88810680be08 by task ondemand-04-dae/5798
CPU: 0 PID: 5798 Comm: ondemand-04-dae Not tainted 6.8.0-dirty #565
Call Trace:
kasan_check_range+0xf6/0x1b0
fscache_withdraw_volume+0x2e1/0x370
cachefiles_withdraw_volume+0x31/0x50
cachefiles_withdraw_cache+0x3ad/0x900
cachefiles_put_unbind_pincount+0x1f6/0x250
cachefiles_daemon_release+0x13b/0x290
__fput+0x204/0xa00
task_work_run+0x139/0x230
Allocated by task 5820:
__kmalloc+0x1df/0x4b0
fscache_alloc_volume+0x70/0x600
__fscache_acquire_volume+0x1c/0x610
erofs_fscache_register_volume+0x96/0x1a0
erofs_fscache_register_fs+0x49a/0x690
erofs_fc_fill_super+0x6c0/0xcc0
vfs_get_super+0xa9/0x140
vfs_get_tree+0x8e/0x300
do_new_mount+0x28c/0x580
[...]
Freed by task 5820:
kfree+0xf1/0x2c0
fscache_put_volume.part.0+0x5cb/0x9e0
erofs_fscache_unregister_fs+0x157/0x1b0
erofs_kill_sb+0xd9/0x1c0
deactivate_locked_super+0xa3/0x100
vfs_get_super+0x105/0x140
vfs_get_tree+0x8e/0x300
do_new_mount+0x28c/0x580
[...]
==================================================================
Following is the process that triggers the issue:
mount failed | daemon exit
------------------------------------------------------------
deactivate_locked_super cachefiles_daemon_release
erofs_kill_sb
erofs_fscache_unregister_fs
fscache_relinquish_volume
__fscache_relinquish_volume
fscache_put_volume(fscache_volume, fscache_volume_put_relinquish)
zero = __refcount_dec_and_test(&fscache_volume->ref, &ref);
cachefiles_put_unbind_pincount
cachefiles_daemon_unbind
cachefiles_withdraw_cache
cachefiles_withdraw_volumes
list_del_init(&volume->cache_link)
fscache_free_volume(fscache_volume)
cache->ops->free_volume
cachefiles_free_volume
list_del_init(&cachefiles_volume->cache_link);
kfree(fscache_volume)
cachefiles_withdraw_volume
fscache_withdraw_volume
fscache_volume->n_accesses
// fscache_volume UAF !!!
The fscache_volume in cache->volumes must not have been freed yet, but its
reference count may be 0. So use the new fscache_try_get_volume() helper
function try to get its reference count.
If the reference count of fscache_volume is 0, fscache_put_volume() is
freeing it, so wait for it to be removed from cache->volumes.
If its reference count is not 0, call cachefiles_withdraw_volume() with
reference count protection to avoid the above issue.
Fixes:
|
||
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Mina Almasry
|
4dec64c52e |
page_pool: convert to use netmem
Abstract the memory type from the page_pool so we can later add support for new memory types. Convert the page_pool to use the new netmem type abstraction, rather than use struct page directly. As of this patch the netmem type is a no-op abstraction: it's always a struct page underneath. All the page pool internals are converted to use struct netmem instead of struct page, and the page pool now exports 2 APIs: 1. The existing struct page API. 2. The new struct netmem API. Keeping the existing API is transitional; we do not want to refactor all the current drivers using the page pool at once. The netmem abstraction is currently a no-op. The page_pool uses page_to_netmem() to convert allocated pages to netmem, and uses netmem_to_page() to convert the netmem back to pages to pass to mm APIs, Follow up patches to this series add non-paged netmem support to the page_pool. This change is factored out on its own to limit the code churn to this 1 patch, for ease of code review. Signed-off-by: Mina Almasry <almasrymina@google.com> Reviewed-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://patch.msgid.link/20240628003253.1694510-6-almasrymina@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Dongliang Cui
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aa6ff4eb7c |
block: Add ioprio to block_rq tracepoint
Sometimes we need to track the processing order of requests with ioprio set. So the ioprio of request can be useful information. Example： block_rq_insert: 8,0 RA 16384 () 6500840 + 32 be,0,6 [binder:815_3] block_rq_issue: 8,0 RA 16384 () 6500840 + 32 be,0,6 [binder:815_3] block_rq_complete: 8,0 RA () 6500840 + 32 be,0,6 [0] Signed-off-by: Dongliang Cui <dongliang.cui@unisoc.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Link: https://lore.kernel.org/r/20240614074936.113659-1-dongliang.cui@unisoc.com Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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Colin Ian King
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502099acb8 |
firewire: core: Fix spelling mistakes in tracepoint messages
There are two spelling mistakes in the tracepoint message text. Fix them. Signed-off-by: Colin Ian King <colin.i.king@gmail.com> Link: https://lore.kernel.org/r/20240627170847.125531-1-colin.i.king@gmail.com Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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Zhang Yi
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0d66b23d79 |
ext4: make ext4_da_reserve_space() reserve multi-clusters
Add 'nr_resv' parameter to ext4_da_reserve_space(), which indicates the number of clusters wants to reserve, make it reserve multiple clusters at a time. Signed-off-by: Zhang Yi <yi.zhang@huawei.com> Reviewed-by: Jan Kara <jack@suse.cz> Link: https://patch.msgid.link/20240517124005.347221-8-yi.zhang@huaweicloud.com Signed-off-by: Theodore Ts'o <tytso@mit.edu> |
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Zhang Yi
|
12eba993b9 |
ext4: make ext4_es_insert_delayed_block() insert multi-blocks
Rename ext4_es_insert_delayed_block() to ext4_es_insert_delayed_extent() and pass length parameter to make it insert multiple delalloc blocks at a time. For the case of bigalloc, split the allocated parameter to lclu_allocated and end_allocated. lclu_allocated indicates the allocation state of the cluster which is containing the lblk, end_allocated indicates the allocation state of the extent end, clusters in the middle of delay allocated extent must be unallocated. Signed-off-by: Zhang Yi <yi.zhang@huawei.com> Reviewed-by: Jan Kara <jack@suse.cz> Link: https://patch.msgid.link/20240517124005.347221-7-yi.zhang@huaweicloud.com Signed-off-by: Theodore Ts'o <tytso@mit.edu> |
||
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Jakub Kicinski
|
193b9b2002 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. No conflicts. Adjacent changes: |
||
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Yunseong Kim
|
bab4923132 |
tracing/net_sched: NULL pointer dereference in perf_trace_qdisc_reset()
In the TRACE_EVENT(qdisc_reset) NULL dereference occurred from qdisc->dev_queue->dev <NULL> ->name This situation simulated from bunch of veths and Bluetooth disconnection and reconnection. During qdisc initialization, qdisc was being set to noop_queue. In veth_init_queue, the initial tx_num was reduced back to one, causing the qdisc reset to be called with noop, which led to the kernel panic. I've attached the GitHub gist link that C converted syz-execprogram source code and 3 log of reproduced vmcore-dmesg. https://gist.github.com/yskelg/cc64562873ce249cdd0d5a358b77d740 Yeoreum and I use two fuzzing tool simultaneously. One process with syz-executor : https://github.com/google/syzkaller $ ./syz-execprog -executor=./syz-executor -repeat=1 -sandbox=setuid \ -enable=none -collide=false log1 The other process with perf fuzzer: https://github.com/deater/perf_event_tests/tree/master/fuzzer $ perf_event_tests/fuzzer/perf_fuzzer I think this will happen on the kernel version. Linux kernel version +v6.7.10, +v6.8, +v6.9 and it could happen in v6.10. This occurred from |
||
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Takashi Sakamoto
|
0d8914165d |
firewire: ohci: add tracepoints event for hardIRQ event
1394 OHCI hardware triggers PCI interrupts to notify any events to software. Current driver for the hardware is programmed by the typical way to utilize top- and bottom- halves, thus it has a timing gap to handle the notification in softIRQ (tasklet). This commit adds a tracepoint event for the hardIRQ event. The comparison of the tracepoint event to tracepoints events in firewire subsystem is helpful to diagnose the timing gap. Link: https://lore.kernel.org/r/20240625031806.956650-3-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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Takashi Sakamoto
|
001c1ff5dc |
firewire: ohci: add support for Linux kernel tracepoints
The Linux Kernel Tracepoints framework is enough useful to trace the interaction between 1394 OHCI hardware and its driver. This commit adds firewire_ohci subsystem to use the framework. It is defined as the different subsystem from the existing firewire subsystem. The definition file for the existing subsystem is slightly changed so that both subsystems are available in 1394 OHCI driver. Link: https://lore.kernel.org/r/20240625031806.956650-2-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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Takashi Sakamoto
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daf763c2d6 |
firewire: core: add tracepoints events for completions of packets in isochronous context
It is helpful to trace completion of packets in isochronous context when the core function is requested them by both in-kernel units driver and userspace applications. This commit adds some tracepoints events for the aim. Link: https://lore.kernel.org/r/20240623220859.851685-8-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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Takashi Sakamoto
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1f3c0d794d |
firewire: core: add tracepoints events for queueing packets of isochronous context
It is helpful to trace the queueing packets of isochronous context when the core function is requested them by both in-kernel unit drivers and userspace applications. This commit adds some tracepoints events for the aim. Link: https://lore.kernel.org/r/20240623220859.851685-7-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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Takashi Sakamoto
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8320b63e02 |
firewire: core: add tracepoints events for flushing completions of isochronous context
It is helpful to trace the flushing completions of isochronous context when the core function is requested them by both in-kernel unit drivers and userspace applications. This commit adds some tracepoints events for the aim. Link: https://lore.kernel.org/r/20240623220859.851685-6-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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Takashi Sakamoto
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c0b0ce6c47 |
firewire: core: add tracepoints events for flushing of isochronous context
It is helpful to trace the flushing of isochronous context when the core function is requested them by both in-kernel unit drivers and userspace applications. This commit adds some tracepoints events for the aim. Link: https://lore.kernel.org/r/20240623220859.851685-5-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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Takashi Sakamoto
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4e64210f67 |
firewire: core: add tracepoints events for starting/stopping of isochronous context
It is helpful to trace the starting and stopping of isochronous context when the core function is requested them by both in-kernel unit drivers and userspace applications. This commit adds some tracepoints events for the aim. Link: https://lore.kernel.org/r/20240623220859.851685-4-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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Takashi Sakamoto
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9f16ac725b |
firewire: core: add tracepoints events for setting channels of multichannel context
It is helpful to trace the channel setting for the multichannel isochronous context when the core function is requested it by both in-kernel unit drivers and userspace applications. This commit adds some tracepoints events for the aim. Link: https://lore.kernel.org/r/20240623220859.851685-3-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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Takashi Sakamoto
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25e6e00d3f |
firewire: core: add tracepoints events for allocation/deallocation of isochronous context
It is helpful to trace the allocation and dealocation of isochronous when the core function is requested them by both in-kernel unit drivers and userspace applications. This commit adds some tracepoints events for the aim. Link: https://lore.kernel.org/r/20240623220859.851685-2-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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Takashi Sakamoto
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ae24ba769b |
firewire: core: undefine macros after use in tracepoints events
Some macros are defined in tracepoints events. They should be back to undefined state after use. Link: https://lore.kernel.org/r/20240623083900.777897-1-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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John Garry
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bf4ae8f2e6 |
scsi: sd: Atomic write support
Support is divided into two main areas: - reading VPD pages and setting sdev request_queue limits - support WRITE ATOMIC (16) command and tracing The relevant block limits VPD page need to be read to allow the block layer request_queue atomic write limits to be set. These VPD page limits are described in sbc4r22 section 6.6.4 - Block limits VPD page. There are five limits of interest: - MAXIMUM ATOMIC TRANSFER LENGTH - ATOMIC ALIGNMENT - ATOMIC TRANSFER LENGTH GRANULARITY - MAXIMUM ATOMIC TRANSFER LENGTH WITH BOUNDARY - MAXIMUM ATOMIC BOUNDARY SIZE MAXIMUM ATOMIC TRANSFER LENGTH is the maximum length for a WRITE ATOMIC (16) command. It will not be greater than the device MAXIMUM TRANSFER LENGTH. ATOMIC ALIGNMENT and ATOMIC TRANSFER LENGTH GRANULARITY are the minimum alignment and length values for an atomic write in terms of logical blocks. Unlike NVMe, SCSI does not specify an LBA space boundary, but does specify a per-IO boundary granularity. The maximum boundary size is specified in MAXIMUM ATOMIC BOUNDARY SIZE. When used, this boundary value is set in the WRITE ATOMIC (16) ATOMIC BOUNDARY field - layout for the WRITE_ATOMIC_16 command can be found in sbc4r22 section 5.48. This boundary value is the granularity size at which the device may atomically write the data. A value of zero in WRITE ATOMIC (16) ATOMIC BOUNDARY field means that all data must be atomically written together. MAXIMUM ATOMIC TRANSFER LENGTH WITH BOUNDARY is the maximum atomic write length if a non-zero boundary value is set. For atomic write support, the WRITE ATOMIC (16) boundary is not of much interest, as the block layer expects each request submitted to be executed atomically. However, the SCSI spec does leave itself open to a quirky scenario where MAXIMUM ATOMIC TRANSFER LENGTH is zero, yet MAXIMUM ATOMIC TRANSFER LENGTH WITH BOUNDARY and MAXIMUM ATOMIC BOUNDARY SIZE are both non-zero. This case will be supported. To set the block layer request_queue atomic write capabilities, sanitize the VPD page limits and set limits as follows: - atomic_write_unit_min is derived from granularity and alignment values. If no granularity value is not set, use physical block size - atomic_write_unit_max is derived from MAXIMUM ATOMIC TRANSFER LENGTH. In the scenario where MAXIMUM ATOMIC TRANSFER LENGTH is zero and boundary limits are non-zero, use MAXIMUM ATOMIC BOUNDARY SIZE for atomic_write_unit_max. New flag scsi_disk.use_atomic_write_boundary is set for this scenario. - atomic_write_boundary_bytes is set to zero always SCSI also supports a WRITE ATOMIC (32) command, which is for type 2 protection enabled. This is not going to be supported now, so check for T10_PI_TYPE2_PROTECTION when setting any request_queue limits. To handle an atomic write request, add support for WRITE ATOMIC (16) command in handler sd_setup_atomic_cmnd(). Flag use_atomic_write_boundary is checked here for encoding ATOMIC BOUNDARY field. Trace info is also added for WRITE_ATOMIC_16 command. Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: John Garry <john.g.garry@oracle.com> Acked-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Link: https://lore.kernel.org/r/20240620125359.2684798-9-john.g.garry@oracle.com Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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Jakub Kicinski
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a6ec08beec |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: drivers/net/ethernet/broadcom/bnxt/bnxt.c |
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Yan Zhai
|
c53795d48e |
net: add rx_sk to trace_kfree_skb
skb does not include enough information to find out receiving sockets/services and netns/containers on packet drops. In theory skb->dev tells about netns, but it can get cleared/reused, e.g. by TCP stack for OOO packet lookup. Similarly, skb->sk often identifies a local sender, and tells nothing about a receiver. Allow passing an extra receiving socket to the tracepoint to improve the visibility on receiving drops. Signed-off-by: Yan Zhai <yan@cloudflare.com> Acked-by: Jesper Dangaard Brouer <hawk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Tejun Heo
|
07814a9439 |
sched_ext: Print debug dump after an error exit
If a BPF scheduler triggers an error, the scheduler is aborted and the
system is reverted to the built-in scheduler. In the process, a lot of
information which may be useful for figuring out what happened can be lost.
This patch adds debug dump which captures information which may be useful
for debugging including runqueue and runnable thread states at the time of
failure. The following shows a debug dump after triggering the watchdog:
root@test ~# os/work/tools/sched_ext/build/bin/scx_qmap -t 100
stats : enq=1 dsp=0 delta=1 deq=0
stats : enq=90 dsp=90 delta=0 deq=0
stats : enq=156 dsp=156 delta=0 deq=0
stats : enq=218 dsp=218 delta=0 deq=0
stats : enq=255 dsp=255 delta=0 deq=0
stats : enq=271 dsp=271 delta=0 deq=0
stats : enq=284 dsp=284 delta=0 deq=0
stats : enq=293 dsp=293 delta=0 deq=0
DEBUG DUMP
================================================================================
kworker/u32:12[320] triggered exit kind 1026:
runnable task stall (stress[1530] failed to run for 6.841s)
Backtrace:
scx_watchdog_workfn+0x136/0x1c0
process_scheduled_works+0x2b5/0x600
worker_thread+0x269/0x360
kthread+0xeb/0x110
ret_from_fork+0x36/0x40
ret_from_fork_asm+0x1a/0x30
QMAP FIFO[0]:
QMAP FIFO[1]:
QMAP FIFO[2]: 1436
QMAP FIFO[3]:
QMAP FIFO[4]:
CPU states
----------
CPU 0 : nr_run=1 ops_qseq=244
curr=swapper/0[0] class=idle_sched_class
QMAP: dsp_idx=1 dsp_cnt=0
R stress[1530] -6841ms
scx_state/flags=3/0x1 ops_state/qseq=2/20
sticky/holding_cpu=-1/-1 dsq_id=(n/a)
cpus=ff
QMAP: force_local=0
asm_sysvec_apic_timer_interrupt+0x16/0x20
CPU 2 : nr_run=2 ops_qseq=142
curr=swapper/2[0] class=idle_sched_class
QMAP: dsp_idx=1 dsp_cnt=0
R sshd[1703] -5905ms
scx_state/flags=3/0x9 ops_state/qseq=2/88
sticky/holding_cpu=-1/-1 dsq_id=(n/a)
cpus=ff
QMAP: force_local=1
__x64_sys_ppoll+0xf6/0x120
do_syscall_64+0x7b/0x150
entry_SYSCALL_64_after_hwframe+0x76/0x7e
R fish[1539] -4141ms
scx_state/flags=3/0x9 ops_state/qseq=2/124
sticky/holding_cpu=-1/-1 dsq_id=(n/a)
cpus=ff
QMAP: force_local=1
futex_wait+0x60/0xe0
do_futex+0x109/0x180
__x64_sys_futex+0x117/0x190
do_syscall_64+0x7b/0x150
entry_SYSCALL_64_after_hwframe+0x76/0x7e
CPU 3 : nr_run=2 ops_qseq=162
curr=kworker/u32:12[320] class=ext_sched_class
QMAP: dsp_idx=1 dsp_cnt=0
*R kworker/u32:12[320] +0ms
scx_state/flags=3/0xd ops_state/qseq=0/0
sticky/holding_cpu=-1/-1 dsq_id=(n/a)
cpus=ff
QMAP: force_local=0
scx_dump_state+0x613/0x6f0
scx_ops_error_irq_workfn+0x1f/0x40
irq_work_run_list+0x82/0xd0
irq_work_run+0x14/0x30
__sysvec_irq_work+0x40/0x140
sysvec_irq_work+0x60/0x70
asm_sysvec_irq_work+0x16/0x20
scx_watchdog_workfn+0x15f/0x1c0
process_scheduled_works+0x2b5/0x600
worker_thread+0x269/0x360
kthread+0xeb/0x110
ret_from_fork+0x36/0x40
ret_from_fork_asm+0x1a/0x30
R kworker/3:2[1436] +0ms
scx_state/flags=3/0x9 ops_state/qseq=2/160
sticky/holding_cpu=-1/-1 dsq_id=(n/a)
cpus=08
QMAP: force_local=0
kthread+0xeb/0x110
ret_from_fork+0x36/0x40
ret_from_fork_asm+0x1a/0x30
CPU 7 : nr_run=0 ops_qseq=76
curr=swapper/7[0] class=idle_sched_class
================================================================================
EXIT: runnable task stall (stress[1530] failed to run for 6.841s)
It shows that CPU 3 was running the watchdog when it triggered the error
condition and the scx_qmap thread has been queued on CPU 0 for over 5
seconds but failed to run. It also prints out scx_qmap specific information
- e.g. which tasks are queued on each FIFO and so on using the dump_*() ops.
This dump has proved pretty useful for developing and debugging BPF
schedulers.
Debug dump is generated automatically when the BPF scheduler exits due to an
error. The debug buffer used in such cases is determined by
sched_ext_ops.exit_dump_len and defaults to 32k. If the debug dump overruns
the available buffer, the output is truncated and marked accordingly.
Debug dump output can also be read through the sched_ext_dump tracepoint.
When read through the tracepoint, there is no length limit.
SysRq-D can be used to trigger debug dump at any time while a BPF scheduler
is loaded. This is non-destructive - the scheduler keeps running afterwards.
The output can be read through the sched_ext_dump tracepoint.
v2: - The size of exit debug dump buffer can now be customized using
sched_ext_ops.exit_dump_len.
- sched_ext_ops.dump*() added to enable dumping of BPF scheduler
specific information.
- Tracpoint output and SysRq-D triggering added.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: David Vernet <dvernet@meta.com>
|
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Takashi Sakamoto
|
2fd22faf0e |
firewire: core: record card index in tracepoints event for self ID sequence
This patch is for for-next branch. The selfIDComplete event occurs in the bus managed by one of 1394 OHCI controller in Linux system, while the existing tracepoints events has the lack of data about it to distinguish the issued hardware from the others. This commit adds card_index member into event structure to store the index of host controller in use, and prints it. Link: https://lore.kernel.org/r/20240614004251.460649-1-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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Takashi Sakamoto
|
677ceae190 |
firewire: core: add tracepoints event for self_id_sequence
It is helpful to trace the content of self ID sequence when the core function building bus topology. This commit adds a tracepoints event fot the purpose. It seems not to achieve printing variable length of array in print time without any storage, thus the structure of event includes a superfluous array to store the state of port. Additionally, there is no helper function to print symbol array, thus the state of port is printed as raw value. Link: https://lore.kernel.org/r/20240605235155.116468-12-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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Takashi Sakamoto
|
1ccfd1a4c8 |
firewire: core: arrangement header inclusion for tracepoints events
It is a bit inconvenient to put the relative path to local header from tree-wide header. This commit delegates the selection to include headers into users. Link: https://lore.kernel.org/r/20240605235155.116468-11-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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Linus Torvalds
|
be2fa8865c |
firewire fixes for v6.10-rc4
- Update tracepoints events introduced in v6.10-rc1 so that it includes the numeric identifier of host card in which the event happens. - replace wiki URL with the current website URL in Kconfig -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQQE66IEYNDXNBPeGKSsLtaWM8LwEwUCZm1CswAKCRCsLtaWM8Lw ExhaAQCu+YeWgrb6eg1ngZVvFYz03xfrItwQrfVBmifNo3PpxAD/azbA7HbquaC+ cueCZmjqxk9SLu4FnrZpExFtQjfvGA4= =3X30 -----END PGP SIGNATURE----- Merge tag 'firewire-fixes-6.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394 Pull firewire fixes from Takashi Sakamoto: - Update tracepoints events introduced in v6.10-rc1 so that it includes the numeric identifier of host card in which the event happens - replace wiki URL with the current website URL in Kconfig * tag 'firewire-fixes-6.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394: firewire: core: record card index in bus_reset_handle tracepoints event firewire: core: record card index in tracepoinrts events derived from bus_reset_arrange_template firewire: core: record card index in async_phy_inbound tracepoints event firewire: core: record card index in async_phy_outbound_complete tracepoints event firewire: core: record card index in async_phy_outbound_initiate tracepoints event firewire: core: record card index in tracepoinrts events derived from async_inbound_template firewire: core: record card index in tracepoinrts events derived from async_outbound_initiate_template firewire: core: record card index in tracepoinrts events derived from async_outbound_complete_template firewire: fix website URL in Kconfig |
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Takashi Sakamoto
|
893098b2af |
firewire: core: record card index in bus_reset_handle tracepoints event
The bus reset event occurs in the bus managed by one of 1394 OHCI controller in Linux system, however the existing tracepoints events has the lack of data about it to distinguish the issued hardware from the others. This commit adds card_index member into event structure to store the index of host controller in use, and prints it. Link: https://lore.kernel.org/r/20240613131440.431766-9-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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Takashi Sakamoto
|
7507dbc46b |
firewire: core: record card index in tracepoinrts events derived from bus_reset_arrange_template
The asynchronous transmission of phy packet is initiated on one of 1394 OHCI controller, however the existing tracepoints events has the lack of data about it. This commit adds card_index member into event structure to store the index of host controller in use, and prints it. Link: https://lore.kernel.org/r/20240613131440.431766-8-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
||
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Takashi Sakamoto
|
abbb4bd96d |
firewire: core: record card index in async_phy_inbound tracepoints event
The asynchronous transmission of phy packet is initiated on one of 1394 OHCI controller, however the existing tracepoints events has the lack of data about it. This commit adds card_index member into event structure to store the index of host controller in use, and prints it. Link: https://lore.kernel.org/r/20240613131440.431766-7-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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Takashi Sakamoto
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810f2aa835 |
firewire: core: record card index in async_phy_outbound_complete tracepoints event
The asynchronous transmission of phy packet is initiated on one of 1394 OHCI controller, however the existing tracepoints events has the lack of data about it. This commit adds card_index member into event structure to store the index of host controller in use, and prints it. Link: https://lore.kernel.org/r/20240613131440.431766-6-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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Takashi Sakamoto
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3cb44a72a3 |
firewire: core: record card index in async_phy_outbound_initiate tracepoints event
The asynchronous transaction is initiated on one of 1394 OHCI controller, however the existing tracepoints events has the lack of data about it. This commit adds card_index member into event structure to store the index of host controller in use, and prints it. Link: https://lore.kernel.org/r/20240613131440.431766-5-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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Takashi Sakamoto
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65ec7ebefe |
firewire: core: record card index in tracepoinrts events derived from async_inbound_template
The asynchronous transaction is initiated on one of 1394 OHCI controller, however the existing tracepoints events has the lack of data about it. This commit adds card_index member into event structure to store the index of host controller in use, and prints it. Link: https://lore.kernel.org/r/20240613131440.431766-4-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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Takashi Sakamoto
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64e02b64fb |
firewire: core: record card index in tracepoinrts events derived from async_outbound_initiate_template
The asynchronous transaction is initiated on one of 1394 OHCI controller, however the existing tracepoints events has the lack of data about it. This commit adds card_index member into event structure to store the index of host controller in use, and prints it. Link: https://lore.kernel.org/r/20240613131440.431766-3-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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Takashi Sakamoto
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e7da16abf0 |
firewire: core: record card index in tracepoinrts events derived from async_outbound_complete_template
The asynchronous transaction is initiated on one of 1394 OHCI controller, however the existing tracepoints events has the lack of data about it. This commit adds card_index member into event structure to store the index of host controller in use, and prints it. Link: https://lore.kernel.org/r/20240613131440.431766-2-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> |
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Jakub Kicinski
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4c7d3d79c7 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. No conflicts, no adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Dmitry Safonov
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96be3dcd01 |
net/tcp: Add tcp-md5 and tcp-ao tracepoints
Instead of forcing userspace to parse dmesg (that's what currently is happening, at least in codebase of my current company), provide a better way, that can be enabled/disabled in runtime. Currently, there are already tcp events, add hashing related ones there, too. Rasdaemon currently exercises net_dev_xmit_timeout, devlink_health_report, but it'll be trivial to teach it to deal with failed hashes. Otherwise, BGP may trace/log them itself. Especially exciting for possible investigations is key rotation (RNext_key requests). Suggested-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Dmitry Safonov <0x7f454c46@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Christian Brauner
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a82c13d299
|
Merge patch series "cachefiles: some bugfixes and cleanups for ondemand requests"
libaokun@huaweicloud.com <libaokun@huaweicloud.com> says: We've been testing ondemand mode for cachefiles since January, and we're almost done. We hit a lot of issues during the testing period, and this patch set fixes some of the issues related to ondemand requests. The patches have passed internal testing without regression. The following is a brief overview of the patches, see the patches for more details. Patch 1-5: Holding reference counts of reqs and objects on read requests to avoid malicious restore leading to use-after-free. Patch 6-10: Add some consistency checks to copen/cread/get_fd to avoid malicious copen/cread/close fd injections causing use-after-free or hung. Patch 11: When cache is marked as CACHEFILES_DEAD, flush all requests, otherwise the kernel may be hung. since this state is irreversible, the daemon can read open requests but cannot copen. Patch 12: Allow interrupting a read request being processed by killing the read process as a way of avoiding hung in some special cases. fs/cachefiles/daemon.c | 3 +- fs/cachefiles/internal.h | 5 + fs/cachefiles/ondemand.c | 217 ++++++++++++++++++++++-------- include/trace/events/cachefiles.h | 8 +- 4 files changed, 176 insertions(+), 57 deletions(-) * patches from https://lore.kernel.org/r/20240522114308.2402121-1-libaokun@huaweicloud.com: cachefiles: make on-demand read killable cachefiles: flush all requests after setting CACHEFILES_DEAD cachefiles: Set object to close if ondemand_id < 0 in copen cachefiles: defer exposing anon_fd until after copy_to_user() succeeds cachefiles: never get a new anonymous fd if ondemand_id is valid cachefiles: add spin_lock for cachefiles_ondemand_info cachefiles: add consistency check for copen/cread cachefiles: remove err_put_fd label in cachefiles_ondemand_daemon_read() cachefiles: fix slab-use-after-free in cachefiles_ondemand_daemon_read() cachefiles: fix slab-use-after-free in cachefiles_ondemand_get_fd() cachefiles: remove requests from xarray during flushing requests cachefiles: add output string to cachefiles_obj_[get|put]_ondemand_fd Signed-off-by: Christian Brauner <brauner@kernel.org> |
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Baokun Li
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da4a827416
|
cachefiles: fix slab-use-after-free in cachefiles_ondemand_daemon_read()
We got the following issue in a fuzz test of randomly issuing the restore
command:
==================================================================
BUG: KASAN: slab-use-after-free in cachefiles_ondemand_daemon_read+0xb41/0xb60
Read of size 8 at addr ffff888122e84088 by task ondemand-04-dae/963
CPU: 13 PID: 963 Comm: ondemand-04-dae Not tainted 6.8.0-dirty #564
Call Trace:
kasan_report+0x93/0xc0
cachefiles_ondemand_daemon_read+0xb41/0xb60
vfs_read+0x169/0xb50
ksys_read+0xf5/0x1e0
Allocated by task 116:
kmem_cache_alloc+0x140/0x3a0
cachefiles_lookup_cookie+0x140/0xcd0
fscache_cookie_state_machine+0x43c/0x1230
[...]
Freed by task 792:
kmem_cache_free+0xfe/0x390
cachefiles_put_object+0x241/0x480
fscache_cookie_state_machine+0x5c8/0x1230
[...]
==================================================================
Following is the process that triggers the issue:
mount | daemon_thread1 | daemon_thread2
------------------------------------------------------------
cachefiles_withdraw_cookie
cachefiles_ondemand_clean_object(object)
cachefiles_ondemand_send_req
REQ_A = kzalloc(sizeof(*req) + data_len)
wait_for_completion(&REQ_A->done)
cachefiles_daemon_read
cachefiles_ondemand_daemon_read
REQ_A = cachefiles_ondemand_select_req
msg->object_id = req->object->ondemand->ondemand_id
------ restore ------
cachefiles_ondemand_restore
xas_for_each(&xas, req, ULONG_MAX)
xas_set_mark(&xas, CACHEFILES_REQ_NEW)
cachefiles_daemon_read
cachefiles_ondemand_daemon_read
REQ_A = cachefiles_ondemand_select_req
copy_to_user(_buffer, msg, n)
xa_erase(&cache->reqs, id)
complete(&REQ_A->done)
------ close(fd) ------
cachefiles_ondemand_fd_release
cachefiles_put_object
cachefiles_put_object
kmem_cache_free(cachefiles_object_jar, object)
REQ_A->object->ondemand->ondemand_id
// object UAF !!!
When we see the request within xa_lock, req->object must not have been
freed yet, so grab the reference count of object before xa_unlock to
avoid the above issue.
Fixes:
|
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Baokun Li
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cc5ac966f2
|
cachefiles: add output string to cachefiles_obj_[get|put]_ondemand_fd
This lets us see the correct trace output.
Fixes:
|
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Linus Torvalds
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b4d88a60fe |
block-6.10-20240523
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Merge tag 'block-6.10-20240523' of git://git.kernel.dk/linux
Pull more block updates from Jens Axboe:
"Followup block updates, mostly due to NVMe being a bit late to the
party. But nothing major in there, so not a big deal.
In detail, this contains:
- NVMe pull request via Keith:
- Fabrics connection retries (Daniel, Hannes)
- Fabrics logging enhancements (Tokunori)
- RDMA delete optimization (Sagi)
- ublk DMA alignment fix (me)
- null_blk sparse warning fixes (Bart)
- Discard support for brd (Keith)
- blk-cgroup list corruption fixes (Ming)
- blk-cgroup stat propagation fix (Waiman)
- Regression fix for plugging stall with md (Yu)
- Misc fixes or cleanups (David, Jeff, Justin)"
* tag 'block-6.10-20240523' of git://git.kernel.dk/linux: (24 commits)
null_blk: fix null-ptr-dereference while configuring 'power' and 'submit_queues'
blk-throttle: remove unused struct 'avg_latency_bucket'
block: fix lost bio for plug enabled bio based device
block: t10-pi: add MODULE_DESCRIPTION()
blk-mq: add helper for checking if one CPU is mapped to specified hctx
blk-cgroup: Properly propagate the iostat update up the hierarchy
blk-cgroup: fix list corruption from reorder of WRITE ->lqueued
blk-cgroup: fix list corruption from resetting io stat
cdrom: rearrange last_media_change check to avoid unintentional overflow
nbd: Fix signal handling
nbd: Remove a local variable from nbd_send_cmd()
nbd: Improve the documentation of the locking assumptions
nbd: Remove superfluous casts
nbd: Use NULL to represent a pointer
brd: implement discard support
null_blk: Fix two sparse warnings
ublk_drv: set DMA alignment mask to 3
nvme-rdma, nvme-tcp: include max reconnects for reconnect logging
nvmet-rdma: Avoid o(n^2) loop in delete_ctrl
nvme: do not retry authentication failures
...
|
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Steven Rostedt (Google)
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2c92ca849f |
tracing/treewide: Remove second parameter of __assign_str()
With the rework of how the __string() handles dynamic strings where it
saves off the source string in field in the helper structure[1], the
assignment of that value to the trace event field is stored in the helper
value and does not need to be passed in again.
This means that with:
__string(field, mystring)
Which use to be assigned with __assign_str(field, mystring), no longer
needs the second parameter and it is unused. With this, __assign_str()
will now only get a single parameter.
There's over 700 users of __assign_str() and because coccinelle does not
handle the TRACE_EVENT() macro I ended up using the following sed script:
git grep -l __assign_str | while read a ; do
sed -e 's/\(__assign_str([^,]*[^ ,]\) *,[^;]*/\1)/' $a > /tmp/test-file;
mv /tmp/test-file $a;
done
I then searched for __assign_str() that did not end with ';' as those
were multi line assignments that the sed script above would fail to catch.
Note, the same updates will need to be done for:
__assign_str_len()
__assign_rel_str()
__assign_rel_str_len()
I tested this with both an allmodconfig and an allyesconfig (build only for both).
[1] https://lore.kernel.org/linux-trace-kernel/20240222211442.634192653@goodmis.org/
Link: https://lore.kernel.org/linux-trace-kernel/20240516133454.681ba6a0@rorschach.local.home
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Julia Lawall <Julia.Lawall@inria.fr>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Christian König <christian.koenig@amd.com> for the amdgpu parts.
Acked-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> #for
Acked-by: Rafael J. Wysocki <rafael@kernel.org> # for thermal
Acked-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Darrick J. Wong <djwong@kernel.org> # xfs
Tested-by: Guenter Roeck <linux@roeck-us.net>
|
||
|
Linus Torvalds
|
72ece20127 |
f2fs update for 6.10-rc1
In this round, we've tried to address some performance issues on zoned storage
such as direct IO and write_hints. In addition, we've migrated some IO paths
using folio. Meanwhile, there are multiple bug fixes in the compression paths,
sanity check conditions, and error handlers.
Enhancement:
- allow direct io of pinned files for zoned storage
- assign the write hint per stream by default
- convert read paths and test_writeback to folio
- avoid allocating WARM_DATA segment for direct IO
Bug fix:
- fix false alarm on invalid block address
- fix to add missing iput() in gc_data_segment()
- fix to release node block count in error path of f2fs_new_node_page()
- compress: don't allow unaligned truncation on released compress inode
- compress: fix to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock
- compress: fix error path of inc_valid_block_count()
- compress: fix to update i_compr_blocks correctly
- fix block migration when section is not aligned to pow2
- don't trigger OPU on pinfile for direct IO
- fix to do sanity check on i_xattr_nid in sanity_check_inode()
- write missing last sum blk of file pinning section
- clear writeback when compression failed
- fix to adjust appropirate defragment pg_end
As usual, there are several minor code clean-ups, and fixes to manage missing
corner cases in the error paths.
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Merge tag 'f2fs-for-6.10.rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim:
"In this round, we've tried to address some performance issues on zoned
storage such as direct IO and write_hints. In addition, we've migrated
some IO paths using folio. Meanwhile, there are multiple bug fixes in
the compression paths, sanity check conditions, and error handlers.
Enhancements:
- allow direct io of pinned files for zoned storage
- assign the write hint per stream by default
- convert read paths and test_writeback to folio
- avoid allocating WARM_DATA segment for direct IO
Bug fixes:
- fix false alarm on invalid block address
- fix to add missing iput() in gc_data_segment()
- fix to release node block count in error path of
f2fs_new_node_page()
- compress:
- don't allow unaligned truncation on released compress inode
- cover {reserve,release}_compress_blocks() w/ cp_rwsem lock
- fix error path of inc_valid_block_count()
- fix to update i_compr_blocks correctly
- fix block migration when section is not aligned to pow2
- don't trigger OPU on pinfile for direct IO
- fix to do sanity check on i_xattr_nid in sanity_check_inode()
- write missing last sum blk of file pinning section
- clear writeback when compression failed
- fix to adjust appropirate defragment pg_end
As usual, there are several minor code clean-ups, and fixes to manage
missing corner cases in the error paths"
* tag 'f2fs-for-6.10.rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (50 commits)
f2fs: initialize last_block_in_bio variable
f2fs: Add inline to f2fs_build_fault_attr() stub
f2fs: fix some ambiguous comments
f2fs: fix to add missing iput() in gc_data_segment()
f2fs: allow dirty sections with zero valid block for checkpoint disabled
f2fs: compress: don't allow unaligned truncation on released compress inode
f2fs: fix to release node block count in error path of f2fs_new_node_page()
f2fs: compress: fix to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock
f2fs: compress: fix error path of inc_valid_block_count()
f2fs: compress: fix typo in f2fs_reserve_compress_blocks()
f2fs: compress: fix to update i_compr_blocks correctly
f2fs: check validation of fault attrs in f2fs_build_fault_attr()
f2fs: fix to limit gc_pin_file_threshold
f2fs: remove unused GC_FAILURE_PIN
f2fs: use f2fs_{err,info}_ratelimited() for cleanup
f2fs: fix block migration when section is not aligned to pow2
f2fs: zone: fix to don't trigger OPU on pinfile for direct IO
f2fs: fix to do sanity check on i_xattr_nid in sanity_check_inode()
f2fs: fix to avoid allocating WARM_DATA segment for direct IO
f2fs: remove redundant parameter in is_next_segment_free()
...
|
||
|
Linus Torvalds
|
eb6a9339ef |
Mainly singleton patches, documented in their respective changelogs.
Notable series include:
- Some maintenance and performance work for ocfs2 in Heming Zhao's
series "improve write IO performance when fragmentation is high".
- Some ocfs2 bugfixes from Su Yue in the series "ocfs2 bugs fixes
exposed by fstests".
- kfifo header rework from Andy Shevchenko in the series "kfifo: Clean
up kfifo.h".
- GDB script fixes from Florian Rommel in the series "scripts/gdb: Fixes
for $lx_current and $lx_per_cpu".
- After much discussion, a coding-style update from Barry Song
explaining one reason why inline functions are preferred over macros.
The series is "codingstyle: avoid unused parameters for a function-like
macro".
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Merge tag 'mm-nonmm-stable-2024-05-19-11-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-mm updates from Andrew Morton:
"Mainly singleton patches, documented in their respective changelogs.
Notable series include:
- Some maintenance and performance work for ocfs2 in Heming Zhao's
series "improve write IO performance when fragmentation is high".
- Some ocfs2 bugfixes from Su Yue in the series "ocfs2 bugs fixes
exposed by fstests".
- kfifo header rework from Andy Shevchenko in the series "kfifo:
Clean up kfifo.h".
- GDB script fixes from Florian Rommel in the series "scripts/gdb:
Fixes for $lx_current and $lx_per_cpu".
- After much discussion, a coding-style update from Barry Song
explaining one reason why inline functions are preferred over
macros. The series is "codingstyle: avoid unused parameters for a
function-like macro""
* tag 'mm-nonmm-stable-2024-05-19-11-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (62 commits)
fs/proc: fix softlockup in __read_vmcore
nilfs2: convert BUG_ON() in nilfs_finish_roll_forward() to WARN_ON()
scripts: checkpatch: check unused parameters for function-like macro
Documentation: coding-style: ask function-like macros to evaluate parameters
nilfs2: use __field_struct() for a bitwise field
selftests/kcmp: remove unused open mode
nilfs2: remove calls to folio_set_error() and folio_clear_error()
kernel/watchdog_perf.c: tidy up kerneldoc
watchdog: allow nmi watchdog to use raw perf event
watchdog: handle comma separated nmi_watchdog command line
nilfs2: make superblock data array index computation sparse friendly
squashfs: remove calls to set the folio error flag
squashfs: convert squashfs_symlink_read_folio to use folio APIs
scripts/gdb: fix detection of current CPU in KGDB
scripts/gdb: make get_thread_info accept pointers
scripts/gdb: fix parameter handling in $lx_per_cpu
scripts/gdb: fix failing KGDB detection during probe
kfifo: don't use "proxy" headers
media: stih-cec: add missing io.h
media: rc: add missing io.h
...
|
||
|
Linus Torvalds
|
61307b7be4 |
The usual shower of singleton fixes and minor series all over MM,
documented (hopefully adequately) in the respective changelogs. Notable
series include:
- Lucas Stach has provided some page-mapping
cleanup/consolidation/maintainability work in the series "mm/treewide:
Remove pXd_huge() API".
- In the series "Allow migrate on protnone reference with
MPOL_PREFERRED_MANY policy", Donet Tom has optimized mempolicy's
MPOL_PREFERRED_MANY mode, yielding almost doubled performance in one
test.
- In their series "Memory allocation profiling" Kent Overstreet and
Suren Baghdasaryan have contributed a means of determining (via
/proc/allocinfo) whereabouts in the kernel memory is being allocated:
number of calls and amount of memory.
- Matthew Wilcox has provided the series "Various significant MM
patches" which does a number of rather unrelated things, but in largely
similar code sites.
- In his series "mm: page_alloc: freelist migratetype hygiene" Johannes
Weiner has fixed the page allocator's handling of migratetype requests,
with resulting improvements in compaction efficiency.
- In the series "make the hugetlb migration strategy consistent" Baolin
Wang has fixed a hugetlb migration issue, which should improve hugetlb
allocation reliability.
- Liu Shixin has hit an I/O meltdown caused by readahead in a
memory-tight memcg. Addressed in the series "Fix I/O high when memory
almost met memcg limit".
- In the series "mm/filemap: optimize folio adding and splitting" Kairui
Song has optimized pagecache insertion, yielding ~10% performance
improvement in one test.
- Baoquan He has cleaned up and consolidated the early zone
initialization code in the series "mm/mm_init.c: refactor
free_area_init_core()".
- Baoquan has also redone some MM initializatio code in the series
"mm/init: minor clean up and improvement".
- MM helper cleanups from Christoph Hellwig in his series "remove
follow_pfn".
- More cleanups from Matthew Wilcox in the series "Various page->flags
cleanups".
- Vlastimil Babka has contributed maintainability improvements in the
series "memcg_kmem hooks refactoring".
- More folio conversions and cleanups in Matthew Wilcox's series
"Convert huge_zero_page to huge_zero_folio"
"khugepaged folio conversions"
"Remove page_idle and page_young wrappers"
"Use folio APIs in procfs"
"Clean up __folio_put()"
"Some cleanups for memory-failure"
"Remove page_mapping()"
"More folio compat code removal"
- David Hildenbrand chipped in with "fs/proc/task_mmu: convert hugetlb
functions to work on folis".
- Code consolidation and cleanup work related to GUP's handling of
hugetlbs in Peter Xu's series "mm/gup: Unify hugetlb, part 2".
- Rick Edgecombe has developed some fixes to stack guard gaps in the
series "Cover a guard gap corner case".
- Jinjiang Tu has fixed KSM's behaviour after a fork+exec in the series
"mm/ksm: fix ksm exec support for prctl".
- Baolin Wang has implemented NUMA balancing for multi-size THPs. This
is a simple first-cut implementation for now. The series is "support
multi-size THP numa balancing".
- Cleanups to vma handling helper functions from Matthew Wilcox in the
series "Unify vma_address and vma_pgoff_address".
- Some selftests maintenance work from Dev Jain in the series
"selftests/mm: mremap_test: Optimizations and style fixes".
- Improvements to the swapping of multi-size THPs from Ryan Roberts in
the series "Swap-out mTHP without splitting".
- Kefeng Wang has significantly optimized the handling of arm64's
permission page faults in the series
"arch/mm/fault: accelerate pagefault when badaccess"
"mm: remove arch's private VM_FAULT_BADMAP/BADACCESS"
- GUP cleanups from David Hildenbrand in "mm/gup: consistently call it
GUP-fast".
- hugetlb fault code cleanups from Vishal Moola in "Hugetlb fault path to
use struct vm_fault".
- selftests build fixes from John Hubbard in the series "Fix
selftests/mm build without requiring "make headers"".
- Memory tiering fixes/improvements from Ho-Ren (Jack) Chuang in the
series "Improved Memory Tier Creation for CPUless NUMA Nodes". Fixes
the initialization code so that migration between different memory types
works as intended.
- David Hildenbrand has improved follow_pte() and fixed an errant driver
in the series "mm: follow_pte() improvements and acrn follow_pte()
fixes".
- David also did some cleanup work on large folio mapcounts in his
series "mm: mapcount for large folios + page_mapcount() cleanups".
- Folio conversions in KSM in Alex Shi's series "transfer page to folio
in KSM".
- Barry Song has added some sysfs stats for monitoring multi-size THP's
in the series "mm: add per-order mTHP alloc and swpout counters".
- Some zswap cleanups from Yosry Ahmed in the series "zswap same-filled
and limit checking cleanups".
- Matthew Wilcox has been looking at buffer_head code and found the
documentation to be lacking. The series is "Improve buffer head
documentation".
- Multi-size THPs get more work, this time from Lance Yang. His series
"mm/madvise: enhance lazyfreeing with mTHP in madvise_free" optimizes
the freeing of these things.
- Kemeng Shi has added more userspace-visible writeback instrumentation
in the series "Improve visibility of writeback".
- Kemeng Shi then sent some maintenance work on top in the series "Fix
and cleanups to page-writeback".
- Matthew Wilcox reduces mmap_lock traffic in the anon vma code in the
series "Improve anon_vma scalability for anon VMAs". Intel's test bot
reported an improbable 3x improvement in one test.
- SeongJae Park adds some DAMON feature work in the series
"mm/damon: add a DAMOS filter type for page granularity access recheck"
"selftests/damon: add DAMOS quota goal test"
- Also some maintenance work in the series
"mm/damon/paddr: simplify page level access re-check for pageout"
"mm/damon: misc fixes and improvements"
- David Hildenbrand has disabled some known-to-fail selftests ni the
series "selftests: mm: cow: flag vmsplice() hugetlb tests as XFAIL".
- memcg metadata storage optimizations from Shakeel Butt in "memcg:
reduce memory consumption by memcg stats".
- DAX fixes and maintenance work from Vishal Verma in the series
"dax/bus.c: Fixups for dax-bus locking".
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Merge tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull mm updates from Andrew Morton:
"The usual shower of singleton fixes and minor series all over MM,
documented (hopefully adequately) in the respective changelogs.
Notable series include:
- Lucas Stach has provided some page-mapping cleanup/consolidation/
maintainability work in the series "mm/treewide: Remove pXd_huge()
API".
- In the series "Allow migrate on protnone reference with
MPOL_PREFERRED_MANY policy", Donet Tom has optimized mempolicy's
MPOL_PREFERRED_MANY mode, yielding almost doubled performance in
one test.
- In their series "Memory allocation profiling" Kent Overstreet and
Suren Baghdasaryan have contributed a means of determining (via
/proc/allocinfo) whereabouts in the kernel memory is being
allocated: number of calls and amount of memory.
- Matthew Wilcox has provided the series "Various significant MM
patches" which does a number of rather unrelated things, but in
largely similar code sites.
- In his series "mm: page_alloc: freelist migratetype hygiene"
Johannes Weiner has fixed the page allocator's handling of
migratetype requests, with resulting improvements in compaction
efficiency.
- In the series "make the hugetlb migration strategy consistent"
Baolin Wang has fixed a hugetlb migration issue, which should
improve hugetlb allocation reliability.
- Liu Shixin has hit an I/O meltdown caused by readahead in a
memory-tight memcg. Addressed in the series "Fix I/O high when
memory almost met memcg limit".
- In the series "mm/filemap: optimize folio adding and splitting"
Kairui Song has optimized pagecache insertion, yielding ~10%
performance improvement in one test.
- Baoquan He has cleaned up and consolidated the early zone
initialization code in the series "mm/mm_init.c: refactor
free_area_init_core()".
- Baoquan has also redone some MM initializatio code in the series
"mm/init: minor clean up and improvement".
- MM helper cleanups from Christoph Hellwig in his series "remove
follow_pfn".
- More cleanups from Matthew Wilcox in the series "Various
page->flags cleanups".
- Vlastimil Babka has contributed maintainability improvements in the
series "memcg_kmem hooks refactoring".
- More folio conversions and cleanups in Matthew Wilcox's series:
"Convert huge_zero_page to huge_zero_folio"
"khugepaged folio conversions"
"Remove page_idle and page_young wrappers"
"Use folio APIs in procfs"
"Clean up __folio_put()"
"Some cleanups for memory-failure"
"Remove page_mapping()"
"More folio compat code removal"
- David Hildenbrand chipped in with "fs/proc/task_mmu: convert
hugetlb functions to work on folis".
- Code consolidation and cleanup work related to GUP's handling of
hugetlbs in Peter Xu's series "mm/gup: Unify hugetlb, part 2".
- Rick Edgecombe has developed some fixes to stack guard gaps in the
series "Cover a guard gap corner case".
- Jinjiang Tu has fixed KSM's behaviour after a fork+exec in the
series "mm/ksm: fix ksm exec support for prctl".
- Baolin Wang has implemented NUMA balancing for multi-size THPs.
This is a simple first-cut implementation for now. The series is
"support multi-size THP numa balancing".
- Cleanups to vma handling helper functions from Matthew Wilcox in
the series "Unify vma_address and vma_pgoff_address".
- Some selftests maintenance work from Dev Jain in the series
"selftests/mm: mremap_test: Optimizations and style fixes".
- Improvements to the swapping of multi-size THPs from Ryan Roberts
in the series "Swap-out mTHP without splitting".
- Kefeng Wang has significantly optimized the handling of arm64's
permission page faults in the series
"arch/mm/fault: accelerate pagefault when badaccess"
"mm: remove arch's private VM_FAULT_BADMAP/BADACCESS"
- GUP cleanups from David Hildenbrand in "mm/gup: consistently call
it GUP-fast".
- hugetlb fault code cleanups from Vishal Moola in "Hugetlb fault
path to use struct vm_fault".
- selftests build fixes from John Hubbard in the series "Fix
selftests/mm build without requiring "make headers"".
- Memory tiering fixes/improvements from Ho-Ren (Jack) Chuang in the
series "Improved Memory Tier Creation for CPUless NUMA Nodes".
Fixes the initialization code so that migration between different
memory types works as intended.
- David Hildenbrand has improved follow_pte() and fixed an errant
driver in the series "mm: follow_pte() improvements and acrn
follow_pte() fixes".
- David also did some cleanup work on large folio mapcounts in his
series "mm: mapcount for large folios + page_mapcount() cleanups".
- Folio conversions in KSM in Alex Shi's series "transfer page to
folio in KSM".
- Barry Song has added some sysfs stats for monitoring multi-size
THP's in the series "mm: add per-order mTHP alloc and swpout
counters".
- Some zswap cleanups from Yosry Ahmed in the series "zswap
same-filled and limit checking cleanups".
- Matthew Wilcox has been looking at buffer_head code and found the
documentation to be lacking. The series is "Improve buffer head
documentation".
- Multi-size THPs get more work, this time from Lance Yang. His
series "mm/madvise: enhance lazyfreeing with mTHP in madvise_free"
optimizes the freeing of these things.
- Kemeng Shi has added more userspace-visible writeback
instrumentation in the series "Improve visibility of writeback".
- Kemeng Shi then sent some maintenance work on top in the series
"Fix and cleanups to page-writeback".
- Matthew Wilcox reduces mmap_lock traffic in the anon vma code in
the series "Improve anon_vma scalability for anon VMAs". Intel's
test bot reported an improbable 3x improvement in one test.
- SeongJae Park adds some DAMON feature work in the series
"mm/damon: add a DAMOS filter type for page granularity access recheck"
"selftests/damon: add DAMOS quota goal test"
- Also some maintenance work in the series
"mm/damon/paddr: simplify page level access re-check for pageout"
"mm/damon: misc fixes and improvements"
- David Hildenbrand has disabled some known-to-fail selftests ni the
series "selftests: mm: cow: flag vmsplice() hugetlb tests as
XFAIL".
- memcg metadata storage optimizations from Shakeel Butt in "memcg:
reduce memory consumption by memcg stats".
- DAX fixes and maintenance work from Vishal Verma in the series
"dax/bus.c: Fixups for dax-bus locking""
* tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (426 commits)
memcg, oom: cleanup unused memcg_oom_gfp_mask and memcg_oom_order
selftests/mm: hugetlb_madv_vs_map: avoid test skipping by querying hugepage size at runtime
mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_wp
mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_fault
selftests: cgroup: add tests to verify the zswap writeback path
mm: memcg: make alloc_mem_cgroup_per_node_info() return bool
mm/damon/core: fix return value from damos_wmark_metric_value
mm: do not update memcg stats for NR_{FILE/SHMEM}_PMDMAPPED
selftests: cgroup: remove redundant enabling of memory controller
Docs/mm/damon/maintainer-profile: allow posting patches based on damon/next tree
Docs/mm/damon/maintainer-profile: change the maintainer's timezone from PST to PT
Docs/mm/damon/design: use a list for supported filters
Docs/admin-guide/mm/damon/usage: fix wrong schemes effective quota update command
Docs/admin-guide/mm/damon/usage: fix wrong example of DAMOS filter matching sysfs file
selftests/damon: classify tests for functionalities and regressions
selftests/damon/_damon_sysfs: use 'is' instead of '==' for 'None'
selftests/damon/_damon_sysfs: find sysfs mount point from /proc/mounts
selftests/damon/_damon_sysfs: check errors from nr_schemes file reads
mm/damon/core: initialize ->esz_bp from damos_quota_init_priv()
selftests/damon: add a test for DAMOS quota goal
...
|
||
|
Linus Torvalds
|
ea5f6ad9ad |
platform-drivers-x86 for v6.10-1
Highlights:
- New drivers/platform/arm64 directory for arm64 embedded-controller drivers
- New drivers for:
- Acer Aspire 1 embedded controllers (for arm64 models)
- ACPI quickstart PNP0C32 buttons
- Dell All-In-One backlight support (dell-uart-backlight)
- Lenovo WMI camera buttons
- Lenovo Yoga Tablet 2 Pro 1380F/L fast charging
- MeeGoPad ANX7428 Type-C Cross Switch (power sequencing only)
- MSI WMI sensors (fan speed sensors only for now)
- Asus WMI:
- 2024 ROG Mini-LED support
- MCU powersave support
- Vivobook GPU MUX support
- Misc. other improvements
- Ideapad laptop:
- Export FnLock LED as LED class device
- Switch platform profiles using thermal management key
- Intel drivers:
- IFS: various improvements
- PMC: Lunar Lake support
- SDSI: various improvements
- TPMI/ISST: various improvements
- tools: intel-speed-select: various improvements
- MS Surface drivers:
- Fan profile switching support
- Surface Pro thermal sensors support
- ThinkPad ACPI:
- Reworked hotkey support to use sparse keymaps
- Add support for new trackpoint-doubletap, Fn+N and Fn+G hotkeys
- WMI core:
- New WMI driver development guide
- x86 Android tablets:
- Lenovo Yoga Tablet 2 Pro 1380F/L support
- Xiaomi MiPad 2 status LED and bezel touch buttons backlight support
- Miscellaneous cleanups / fixes / improvements
The following is an automated git shortlog grouped by driver:
ACPI:
- platform-profile: add platform_profile_cycle()
Add ACPI quickstart button (PNP0C32) driver:
- Add ACPI quickstart button (PNP0C32) driver
Add lenovo-yoga-tab2-pro-1380-fastcharger driver:
- Add lenovo-yoga-tab2-pro-1380-fastcharger driver
Add new Dell UART backlight driver:
- Add new Dell UART backlight driver
Add lenovo WMI camera button driver:
- Add lenovo WMI camera button driver
Add new MeeGoPad ANX7428 Type-C Cross Switch driver:
- Add new MeeGoPad ANX7428 Type-C Cross Switch driver
ISST:
- Support SST-BF and SST-TF per level
- Add missing MODULE_DESCRIPTION
- Add dev_fmt
- Use in_range() to check package ID validity
- Support partitioned systems
- Shorten the assignments for power_domain_info
- Use local variable for auxdev->dev
MAINTAINERS:
- drop Daniel Oliveira Nascimento
arm64:
- dts: qcom: acer-aspire1: Add embedded controller
asus-laptop:
- Use sysfs_emit() and sysfs_emit_at() to replace sprintf()
asus-wmi:
- cleanup main struct to avoid some holes
- Add support for MCU powersave
- ROG Ally increase wait time, allow MCU powersave
- adjust formatting of ppt-<name>() functions
- store a min default for ppt options
- support toggling POST sound
- add support variant of TUF RGB
- add support for Vivobook GPU MUX
- add support for 2024 ROG Mini-LED
- use sysfs_emit() instead of sprintf()
classmate-laptop:
- Add missing MODULE_DESCRIPTION()
devm-helpers:
- Fix a misspelled cancellation in the comments
dt-bindings:
- leds: Add LED_FUNCTION_FNLOCK
- platform: Add Acer Aspire 1 EC
hp-wmi:
- use sysfs_emit() instead of sprintf()
huawei-wmi:
- use sysfs_emit() instead of sprintf()
ideapad-laptop:
- switch platform profiles using thermal management key
- add FnLock LED class device
- add fn_lock_get/set functions
intel-vbtn:
- Log event code on unexpected button events
intel/pmc:
- Enable S0ix blocker show in Lunar Lake
- Add support to show S0ix blocker counter
- Update LNL signal status map
msi-laptop:
- Use sysfs_emit() to replace sprintf()
p2sb:
- Don't init until unassigned resources have been assigned
- Make p2sb_get_devfn() return void
platform:
- arm64: Add Acer Aspire 1 embedded controller driver
- Add ARM64 platform directory
platform/surface:
- aggregator: Log critical errors during SAM probing
- aggregator_registry: Add support for thermal sensors on the Surface Pro 9
- platform_profile: add fan profile switching
platform/x86/amd:
- pmc: Add new ACPI ID AMDI000B
- pmf: Add new ACPI ID AMDI0105
platform/x86/amd/hsmp:
- switch to use device_add_groups()
platform/x86/amd/pmc:
- Fix implicit declaration error on i386
- Add AMD MP2 STB functionality
platform/x86/fujitsu-laptop:
- Replace sprintf() with sysfs_emit()
platform/x86/intel-uncore-freq:
- Don't present root domain on error
platform/x86/intel/ifs:
- Disable irq during one load stage
- trace: display batch num in hex
- Classify error scenarios correctly
platform/x86/intel/pmc:
- Fix PCH names in comments
platform/x86/intel/sdsi:
- Add attribute to read the current meter state
- Add in-band BIOS lock support
- Combine read and write mailbox flows
- Set message size during writes
platform/x86/intel/tpmi:
- Add additional TPMI header fields
- Align comments in kernel-doc
- Check major version change for TPMI Information
- Handle error from tpmi_process_info()
quickstart:
- Fix race condition when reporting input event
- fix Kconfig selects
- Miscellaneous improvements
samsung-laptop:
- Use sysfs_emit() to replace the old interface sprintf()
think-lmi:
- Convert container_of() macros to static inline
thinkpad_acpi:
- Use false to set acpi_send_ev to false
- Support hotkey to disable trackpoint doubletap
- Support for system debug info hotkey
- Support for trackpoint doubletap
- Simplify known_ev handling
- Add mappings for adaptive kbd clipping-tool and cloud keys
- Switch to using sparse-keymap helpers
- Drop KEY_RESERVED special handling
- Use correct keycodes for volume and brightness keys
- Change hotkey_reserved_mask initialization
- Do not send ACPI netlink events for unknown hotkeys
- Move tpacpi_driver_event() call to tpacpi_input_send_key()
- Move hkey > scancode mapping to tpacpi_input_send_key()
- Drop tpacpi_input_send_key_masked() and hotkey_driver_event()
- Always call tpacpi_driver_event() for hotkeys
- Move hotkey_user_mask check to tpacpi_input_send_key()
- Move special original hotkeys handling out of switch-case
- Move adaptive kbd event handling to tpacpi_driver_event()
- Make tpacpi_driver_event() return if it handled the event
- Do hkey to scancode translation later
- Use tpacpi_input_send_key() in adaptive kbd code
- Drop ignore_acpi_ev
- Drop setting send_/ignore_acpi_ev defaults twice
- Provide hotkey_poll_stop_sync() dummy
- Take hotkey_mutex during hotkey_exit()
- change sprintf() to sysfs_emit()
- use platform_profile_cycle()
tools arch x86:
- Add dell-uart-backlight-emulator
tools/arch/x86/intel_sdsi:
- Add current meter support
- Simplify ascii printing
- Fix meter_certificate decoding
- Fix meter_show display
- Fix maximum meter bundle length
tools/power/x86/intel-speed-select:
- v1.19 release
- Display CPU as None for -1
- SST BF/TF support per level
- Increase number of CPUs displayed
- Present all TRL levels for turbo-freq
- Fix display for unsupported levels
- Support multiple dies
- Increase die count
toshiba_acpi:
- Add quirk for buttons on Z830
uv_sysfs:
- use sysfs_emit() instead of sprintf()
wmi:
- Add MSI WMI Platform driver
- Add driver development guide
- Mark simple WMI drivers as legacy-free
- Avoid returning AE_OK upon unknown error
- Support reading/writing 16 bit EC values
x86-android-tablets:
- Create LED device for Xiaomi Pad 2 bottom bezel touch buttons
- Xiaomi pad2 RGB LED fwnode updates
- Pass struct device to init()
- Add Lenovo Yoga Tablet 2 Pro 1380F/L data
- Unregister devices in reverse order
- Add swnode for Xiaomi pad2 indicator LED
- Use GPIO_LOOKUP() macro
xiaomi-wmi:
- Drop unnecessary NULL checks
- Fix race condition when reporting key events
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Merge tag 'platform-drivers-x86-v6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver updates from Hans de Goede:
- New drivers/platform/arm64 directory for arm64 embedded-controller
drivers
- New drivers:
- Acer Aspire 1 embedded controllers (for arm64 models)
- ACPI quickstart PNP0C32 buttons
- Dell All-In-One backlight support (dell-uart-backlight)
- Lenovo WMI camera buttons
- Lenovo Yoga Tablet 2 Pro 1380F/L fast charging
- MeeGoPad ANX7428 Type-C Cross Switch (power sequencing only)
- MSI WMI sensors (fan speed sensors only for now)
- Asus WMI:
- 2024 ROG Mini-LED support
- MCU powersave support
- Vivobook GPU MUX support
- Misc. other improvements
- Ideapad laptop:
- Export FnLock LED as LED class device
- Switch platform profiles using thermal management key
- Intel drivers:
- IFS: various improvements
- PMC: Lunar Lake support
- SDSI: various improvements
- TPMI/ISST: various improvements
- tools: intel-speed-select: various improvements
- MS Surface drivers:
- Fan profile switching support
- Surface Pro thermal sensors support
- ThinkPad ACPI:
- Reworked hotkey support to use sparse keymaps
- Add support for new trackpoint-doubletap, Fn+N and Fn+G hotkeys
- WMI core:
- New WMI driver development guide
- x86 Android tablets:
- Lenovo Yoga Tablet 2 Pro 1380F/L support
- Xiaomi MiPad 2 status LED and bezel touch buttons backlight
support
- Miscellaneous cleanups / fixes / improvements
* tag 'platform-drivers-x86-v6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (128 commits)
platform/x86: Add new MeeGoPad ANX7428 Type-C Cross Switch driver
devm-helpers: Fix a misspelled cancellation in the comments
tools arch x86: Add dell-uart-backlight-emulator
platform/x86: Add new Dell UART backlight driver
platform/x86: x86-android-tablets: Create LED device for Xiaomi Pad 2 bottom bezel touch buttons
platform/x86: x86-android-tablets: Xiaomi pad2 RGB LED fwnode updates
platform/x86: x86-android-tablets: Pass struct device to init()
platform/x86/amd: pmc: Add new ACPI ID AMDI000B
platform/x86/amd: pmf: Add new ACPI ID AMDI0105
platform/x86: p2sb: Don't init until unassigned resources have been assigned
platform/surface: aggregator: Log critical errors during SAM probing
platform/x86: ISST: Support SST-BF and SST-TF per level
platform/x86/fujitsu-laptop: Replace sprintf() with sysfs_emit()
tools/power/x86/intel-speed-select: v1.19 release
tools/power/x86/intel-speed-select: Display CPU as None for -1
tools/power/x86/intel-speed-select: SST BF/TF support per level
tools/power/x86/intel-speed-select: Increase number of CPUs displayed
tools/power/x86/intel-speed-select: Present all TRL levels for turbo-freq
tools/power/x86/intel-speed-select: Fix display for unsupported levels
tools/power/x86/intel-speed-select: Support multiple dies
...
|
||
|
Linus Torvalds
|
3c999d1ae3 |
workqueue: Changes for v6.10
- Work items can now be disabled and enabled, and cancel_work_sync() and disable_work() can be called form atomic contexts for BH work items. This closes feature gap with tasklet and should allow converting all existing tasklet users to BH workqueues. - Improve pool sharing for unbound workqueues with strict affinity. - Misc changes including doc updates, improved debug annotations and cleanups. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCZkU2FA4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGaNaAQDgO5Za4NH3EKVD8BIHpG7N3BpcVNGh/as9E2vh sgJMhwEA7YY4LOUkGkCWYdT+fj7Od/xyqHVH1DVozL2blfsF1gY= =ZEuW -----END PGP SIGNATURE----- Merge tag 'wq-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq Pull workqueue updates from Tejun Heo: - Work items can now be disabled and enabled, and cancel_work_sync() and disable_work() can be called form atomic contexts for BH work items. This closes feature gap with tasklet and should allow converting all existing tasklet users to BH workqueues. - Improve pool sharing for unbound workqueues with strict affinity. - Misc changes including doc updates, improved debug annotations and cleanups. * tag 'wq-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: workqueue: Use "@..." in function comment to describe variable length argument workqueue: Add destroy_work_on_stack() in workqueue_softirq_dead() workqueue: remove unnecessary import and function in wq_monitor.py workqueue: Introduce enable_and_queue_work() convenience function workqueue: add function in event of workqueue_activate_work workqueue: Cleanup subsys attribute registration workqueue: Use list_last_entry() to get the last idle worker workqueue: Move attrs->cpumask out of worker_pool's properties when attrs->affn_strict workqueue: Use INIT_WORK_ONSTACK in workqueue_softirq_dead() workqueue: Allow cancel_work_sync() and disable_work() from atomic contexts on BH work items workqueue: Remember whether a work item was on a BH workqueue workqueue: Remove WORK_OFFQ_CANCELING workqueue: Implement disable/enable for (delayed) work items workqueue: Preserve OFFQ bits in cancel[_sync] paths |
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Linus Torvalds
|
de6fef50ea |
cgroup: Changes for v6.10
- The locking around cpuset hotplug processing has always been a bit of mess
which was worked around by making hotplug processing asynchronous. The
asynchronity isn't great and led to other issues. We tried to make the
behavior synchronous a while ago but that led to lockdep splats. Waiman
took another stab at cleaning up and making it synchronous. The patch has
been in -next for well over a month and there haven't been any complaints,
so fingers crossed.
- Tracepoints added to help understanding rstat lock contentions.
- A bunch of minor changes - doc updates, code cleanups and selftests.
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Merge tag 'cgroup-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup updates from Tejun Heo:
- The locking around cpuset hotplug processing has always been a bit of
mess which was worked around by making hotplug processing
asynchronous. The asynchronity isn't great and led to other issues.
We tried to make the behavior synchronous a while ago but that led to
lockdep splats. Waiman took another stab at cleaning up and making it
synchronous. The patch has been in -next for well over a month and
there haven't been any complaints, so fingers crossed.
- Tracepoints added to help understanding rstat lock contentions.
- A bunch of minor changes - doc updates, code cleanups and selftests.
* tag 'cgroup-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (24 commits)
cgroup/rstat: add cgroup_rstat_cpu_lock helpers and tracepoints
selftests/cgroup: Drop define _GNU_SOURCE
docs: cgroup-v1: Update page cache removal functions
selftests/cgroup: fix uninitialized variables in test_zswap.c
selftests/cgroup: cpu_hogger init: use {} instead of {NULL}
selftests/cgroup: fix clang warnings: uninitialized fd variable
selftests/cgroup: fix clang build failures for abs() calls
cgroup/cpuset: Remove outdated comment in sched_partition_write()
cgroup/cpuset: Fix incorrect top_cpuset flags
cgroup/cpuset: Avoid clearing CS_SCHED_LOAD_BALANCE twice
cgroup/cpuset: Statically initialize more members of top_cpuset
cgroup: Avoid unnecessary looping in cgroup_no_v1()
cgroup, legacy_freezer: update comment for freezer_css_offline()
docs, cgroup: add entries for pids to cgroup-v2.rst
cgroup: don't call cgroup1_pidlist_destroy_all() for v2
cgroup_freezer: update comment for freezer_css_online()
cgroup/rstat: desc member cgrp in cgroup_rstat_flush_release
cgroup/rstat: add cgroup_rstat_lock helpers and tracepoints
cgroup/pids: Remove superfluous zeroing
docs: cgroup-v1: Fix description for css_online
...
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Linus Torvalds
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f4b0c4b508 |
ARM:
* Move a lot of state that was previously stored on a per vcpu
basis into a per-CPU area, because it is only pertinent to the
host while the vcpu is loaded. This results in better state
tracking, and a smaller vcpu structure.
* Add full handling of the ERET/ERETAA/ERETAB instructions in
nested virtualisation. The last two instructions also require
emulating part of the pointer authentication extension.
As a result, the trap handling of pointer authentication has
been greatly simplified.
* Turn the global (and not very scalable) LPI translation cache
into a per-ITS, scalable cache, making non directly injected
LPIs much cheaper to make visible to the vcpu.
* A batch of pKVM patches, mostly fixes and cleanups, as the
upstreaming process seems to be resuming. Fingers crossed!
* Allocate PPIs and SGIs outside of the vcpu structure, allowing
for smaller EL2 mapping and some flexibility in implementing
more or less than 32 private IRQs.
* Purge stale mpidr_data if a vcpu is created after the MPIDR
map has been created.
* Preserve vcpu-specific ID registers across a vcpu reset.
* Various minor cleanups and improvements.
LoongArch:
* Add ParaVirt IPI support.
* Add software breakpoint support.
* Add mmio trace events support.
RISC-V:
* Support guest breakpoints using ebreak
* Introduce per-VCPU mp_state_lock and reset_cntx_lock
* Virtualize SBI PMU snapshot and counter overflow interrupts
* New selftests for SBI PMU and Guest ebreak
* Some preparatory work for both TDX and SNP page fault handling.
This also cleans up the page fault path, so that the priorities
of various kinds of fauls (private page, no memory, write
to read-only slot, etc.) are easier to follow.
x86:
* Minimize amount of time that shadow PTEs remain in the special
REMOVED_SPTE state. This is a state where the mmu_lock is held for
reading but concurrent accesses to the PTE have to spin; shortening
its use allows other vCPUs to repopulate the zapped region while
the zapper finishes tearing down the old, defunct page tables.
* Advertise the max mappable GPA in the "guest MAXPHYADDR" CPUID field,
which is defined by hardware but left for software use. This lets KVM
communicate its inability to map GPAs that set bits 51:48 on hosts
without 5-level nested page tables. Guest firmware is expected to
use the information when mapping BARs; this avoids that they end up at
a legal, but unmappable, GPA.
* Fixed a bug where KVM would not reject accesses to MSR that aren't
supposed to exist given the vCPU model and/or KVM configuration.
* As usual, a bunch of code cleanups.
x86 (AMD):
* Implement a new and improved API to initialize SEV and SEV-ES VMs, which
will also be extendable to SEV-SNP. The new API specifies the desired
encryption in KVM_CREATE_VM and then separately initializes the VM.
The new API also allows customizing the desired set of VMSA features;
the features affect the measurement of the VM's initial state, and
therefore enabling them cannot be done tout court by the hypervisor.
While at it, the new API includes two bugfixes that couldn't be
applied to the old one without a flag day in userspace or without
affecting the initial measurement. When a SEV-ES VM is created with
the new VM type, KVM_GET_REGS/KVM_SET_REGS and friends are
rejected once the VMSA has been encrypted. Also, the FPU and AVX
state will be synchronized and encrypted too.
* Support for GHCB version 2 as applicable to SEV-ES guests. This, once
more, is only accessible when using the new KVM_SEV_INIT2 flow for
initialization of SEV-ES VMs.
x86 (Intel):
* An initial bunch of prerequisite patches for Intel TDX were merged.
They generally don't do anything interesting. The only somewhat user
visible change is a new debugging mode that checks that KVM's MMU
never triggers a #VE virtualization exception in the guest.
* Clear vmcs.EXIT_QUALIFICATION when synthesizing an EPT Misconfig VM-Exit to
L1, as per the SDM.
Generic:
* Use vfree() instead of kvfree() for allocations that always use vcalloc()
or __vcalloc().
* Remove .change_pte() MMU notifier - the changes to non-KVM code are
small and Andrew Morton asked that I also take those through the KVM
tree. The callback was only ever implemented by KVM (which was also the
original user of MMU notifiers) but it had been nonfunctional ever since
calls to set_pte_at_notify were wrapped with invalidate_range_start
and invalidate_range_end... in 2012.
Selftests:
* Enhance the demand paging test to allow for better reporting and stressing
of UFFD performance.
* Convert the steal time test to generate TAP-friendly output.
* Fix a flaky false positive in the xen_shinfo_test due to comparing elapsed
time across two different clock domains.
* Skip the MONITOR/MWAIT test if the host doesn't actually support MWAIT.
* Avoid unnecessary use of "sudo" in the NX hugepage test wrapper shell
script, to play nice with running in a minimal userspace environment.
* Allow skipping the RSEQ test's sanity check that the vCPU was able to
complete a reasonable number of KVM_RUNs, as the assert can fail on a
completely valid setup. If the test is run on a large-ish system that is
otherwise idle, and the test isn't affined to a low-ish number of CPUs, the
vCPU task can be repeatedly migrated to CPUs that are in deep sleep states,
which results in the vCPU having very little net runtime before the next
migration due to high wakeup latencies.
* Define _GNU_SOURCE for all selftests to fix a warning that was introduced by
a change to kselftest_harness.h late in the 6.9 cycle, and because forcing
every test to #define _GNU_SOURCE is painful.
* Provide a global pseudo-RNG instance for all tests, so that library code can
generate random, but determinstic numbers.
* Use the global pRNG to randomly force emulation of select writes from guest
code on x86, e.g. to help validate KVM's emulation of locked accesses.
* Allocate and initialize x86's GDT, IDT, TSS, segments, and default exception
handlers at VM creation, instead of forcing tests to manually trigger the
related setup.
Documentation:
* Fix a goof in the KVM_CREATE_GUEST_MEMFD documentation.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM updates from Paolo Bonzini:
"ARM:
- Move a lot of state that was previously stored on a per vcpu basis
into a per-CPU area, because it is only pertinent to the host while
the vcpu is loaded. This results in better state tracking, and a
smaller vcpu structure.
- Add full handling of the ERET/ERETAA/ERETAB instructions in nested
virtualisation. The last two instructions also require emulating
part of the pointer authentication extension. As a result, the trap
handling of pointer authentication has been greatly simplified.
- Turn the global (and not very scalable) LPI translation cache into
a per-ITS, scalable cache, making non directly injected LPIs much
cheaper to make visible to the vcpu.
- A batch of pKVM patches, mostly fixes and cleanups, as the
upstreaming process seems to be resuming. Fingers crossed!
- Allocate PPIs and SGIs outside of the vcpu structure, allowing for
smaller EL2 mapping and some flexibility in implementing more or
less than 32 private IRQs.
- Purge stale mpidr_data if a vcpu is created after the MPIDR map has
been created.
- Preserve vcpu-specific ID registers across a vcpu reset.
- Various minor cleanups and improvements.
LoongArch:
- Add ParaVirt IPI support
- Add software breakpoint support
- Add mmio trace events support
RISC-V:
- Support guest breakpoints using ebreak
- Introduce per-VCPU mp_state_lock and reset_cntx_lock
- Virtualize SBI PMU snapshot and counter overflow interrupts
- New selftests for SBI PMU and Guest ebreak
- Some preparatory work for both TDX and SNP page fault handling.
This also cleans up the page fault path, so that the priorities of
various kinds of fauls (private page, no memory, write to read-only
slot, etc.) are easier to follow.
x86:
- Minimize amount of time that shadow PTEs remain in the special
REMOVED_SPTE state.
This is a state where the mmu_lock is held for reading but
concurrent accesses to the PTE have to spin; shortening its use
allows other vCPUs to repopulate the zapped region while the zapper
finishes tearing down the old, defunct page tables.
- Advertise the max mappable GPA in the "guest MAXPHYADDR" CPUID
field, which is defined by hardware but left for software use.
This lets KVM communicate its inability to map GPAs that set bits
51:48 on hosts without 5-level nested page tables. Guest firmware
is expected to use the information when mapping BARs; this avoids
that they end up at a legal, but unmappable, GPA.
- Fixed a bug where KVM would not reject accesses to MSR that aren't
supposed to exist given the vCPU model and/or KVM configuration.
- As usual, a bunch of code cleanups.
x86 (AMD):
- Implement a new and improved API to initialize SEV and SEV-ES VMs,
which will also be extendable to SEV-SNP.
The new API specifies the desired encryption in KVM_CREATE_VM and
then separately initializes the VM. The new API also allows
customizing the desired set of VMSA features; the features affect
the measurement of the VM's initial state, and therefore enabling
them cannot be done tout court by the hypervisor.
While at it, the new API includes two bugfixes that couldn't be
applied to the old one without a flag day in userspace or without
affecting the initial measurement. When a SEV-ES VM is created with
the new VM type, KVM_GET_REGS/KVM_SET_REGS and friends are rejected
once the VMSA has been encrypted. Also, the FPU and AVX state will
be synchronized and encrypted too.
- Support for GHCB version 2 as applicable to SEV-ES guests.
This, once more, is only accessible when using the new
KVM_SEV_INIT2 flow for initialization of SEV-ES VMs.
x86 (Intel):
- An initial bunch of prerequisite patches for Intel TDX were merged.
They generally don't do anything interesting. The only somewhat
user visible change is a new debugging mode that checks that KVM's
MMU never triggers a #VE virtualization exception in the guest.
- Clear vmcs.EXIT_QUALIFICATION when synthesizing an EPT Misconfig
VM-Exit to L1, as per the SDM.
Generic:
- Use vfree() instead of kvfree() for allocations that always use
vcalloc() or __vcalloc().
- Remove .change_pte() MMU notifier - the changes to non-KVM code are
small and Andrew Morton asked that I also take those through the
KVM tree.
The callback was only ever implemented by KVM (which was also the
original user of MMU notifiers) but it had been nonfunctional ever
since calls to set_pte_at_notify were wrapped with
invalidate_range_start and invalidate_range_end... in 2012.
Selftests:
- Enhance the demand paging test to allow for better reporting and
stressing of UFFD performance.
- Convert the steal time test to generate TAP-friendly output.
- Fix a flaky false positive in the xen_shinfo_test due to comparing
elapsed time across two different clock domains.
- Skip the MONITOR/MWAIT test if the host doesn't actually support
MWAIT.
- Avoid unnecessary use of "sudo" in the NX hugepage test wrapper
shell script, to play nice with running in a minimal userspace
environment.
- Allow skipping the RSEQ test's sanity check that the vCPU was able
to complete a reasonable number of KVM_RUNs, as the assert can fail
on a completely valid setup.
If the test is run on a large-ish system that is otherwise idle,
and the test isn't affined to a low-ish number of CPUs, the vCPU
task can be repeatedly migrated to CPUs that are in deep sleep
states, which results in the vCPU having very little net runtime
before the next migration due to high wakeup latencies.
- Define _GNU_SOURCE for all selftests to fix a warning that was
introduced by a change to kselftest_harness.h late in the 6.9
cycle, and because forcing every test to #define _GNU_SOURCE is
painful.
- Provide a global pseudo-RNG instance for all tests, so that library
code can generate random, but determinstic numbers.
- Use the global pRNG to randomly force emulation of select writes
from guest code on x86, e.g. to help validate KVM's emulation of
locked accesses.
- Allocate and initialize x86's GDT, IDT, TSS, segments, and default
exception handlers at VM creation, instead of forcing tests to
manually trigger the related setup.
Documentation:
- Fix a goof in the KVM_CREATE_GUEST_MEMFD documentation"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (225 commits)
selftests/kvm: remove dead file
KVM: selftests: arm64: Test vCPU-scoped feature ID registers
KVM: selftests: arm64: Test that feature ID regs survive a reset
KVM: selftests: arm64: Store expected register value in set_id_regs
KVM: selftests: arm64: Rename helper in set_id_regs to imply VM scope
KVM: arm64: Only reset vCPU-scoped feature ID regs once
KVM: arm64: Reset VM feature ID regs from kvm_reset_sys_regs()
KVM: arm64: Rename is_id_reg() to imply VM scope
KVM: arm64: Destroy mpidr_data for 'late' vCPU creation
KVM: arm64: Use hVHE in pKVM by default on CPUs with VHE support
KVM: arm64: Fix hvhe/nvhe early alias parsing
KVM: SEV: Allow per-guest configuration of GHCB protocol version
KVM: SEV: Add GHCB handling for termination requests
KVM: SEV: Add GHCB handling for Hypervisor Feature Support requests
KVM: SEV: Add support to handle AP reset MSR protocol
KVM: x86: Explicitly zero kvm_caps during vendor module load
KVM: x86: Fully re-initialize supported_mce_cap on vendor module load
KVM: x86: Fully re-initialize supported_vm_types on vendor module load
KVM: x86/mmu: Sanity check that __kvm_faultin_pfn() doesn't create noslot pfns
KVM: x86/mmu: Initialize kvm_page_fault's pfn and hva to error values
...
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