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1dd7dcb6ea
42646 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
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1dd7dcb6ea |
There was a lot of clean ups and minor fixes. One of those clean ups was
to the trace_seq code. It also removed the return values to the
trace_seq_*() functions and use trace_seq_has_overflowed() to see if
the buffer filled up or not. This is similar to work being done to the
seq_file code as well in another tree.
Some of the other goodies include:
o Added some "!" (NOT) logic to the tracing filter.
o Fixed the frame pointer logic to the x86_64 mcount trampolines
o Added the logic for dynamic trampolines on !CONFIG_PREEMPT systems.
That is, the ftrace trampoline can be dynamically allocated
and be called directly by functions that only have a single hook
to them.
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Merge tag 'trace-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt:
"There was a lot of clean ups and minor fixes. One of those clean ups
was to the trace_seq code. It also removed the return values to the
trace_seq_*() functions and use trace_seq_has_overflowed() to see if
the buffer filled up or not. This is similar to work being done to
the seq_file code as well in another tree.
Some of the other goodies include:
- Added some "!" (NOT) logic to the tracing filter.
- Fixed the frame pointer logic to the x86_64 mcount trampolines
- Added the logic for dynamic trampolines on !CONFIG_PREEMPT systems.
That is, the ftrace trampoline can be dynamically allocated and be
called directly by functions that only have a single hook to them"
* tag 'trace-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (55 commits)
tracing: Truncated output is better than nothing
tracing: Add additional marks to signal very large time deltas
Documentation: describe trace_buf_size parameter more accurately
tracing: Allow NOT to filter AND and OR clauses
tracing: Add NOT to filtering logic
ftrace/fgraph/x86: Have prepare_ftrace_return() take ip as first parameter
ftrace/x86: Get rid of ftrace_caller_setup
ftrace/x86: Have save_mcount_regs macro also save stack frames if needed
ftrace/x86: Add macro MCOUNT_REG_SIZE for amount of stack used to save mcount regs
ftrace/x86: Simplify save_mcount_regs on getting RIP
ftrace/x86: Have save_mcount_regs store RIP in %rdi for first parameter
ftrace/x86: Rename MCOUNT_SAVE_FRAME and add more detailed comments
ftrace/x86: Move MCOUNT_SAVE_FRAME out of header file
ftrace/x86: Have static tracing also use ftrace_caller_setup
ftrace/x86: Have static function tracing always test for function graph
kprobes: Add IPMODIFY flag to kprobe_ftrace_ops
ftrace, kprobes: Support IPMODIFY flag to find IP modify conflict
kprobes/ftrace: Recover original IP if pre_handler doesn't change it
tracing/trivial: Fix typos and make an int into a bool
tracing: Deletion of an unnecessary check before iput()
...
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Linus Torvalds
|
b6da0076ba |
Merge branch 'akpm' (patchbomb from Andrew)
Merge first patchbomb from Andrew Morton: - a few minor cifs fixes - dma-debug upadtes - ocfs2 - slab - about half of MM - procfs - kernel/exit.c - panic.c tweaks - printk upates - lib/ updates - checkpatch updates - fs/binfmt updates - the drivers/rtc tree - nilfs - kmod fixes - more kernel/exit.c - various other misc tweaks and fixes * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (190 commits) exit: pidns: fix/update the comments in zap_pid_ns_processes() exit: pidns: alloc_pid() leaks pid_namespace if child_reaper is exiting exit: exit_notify: re-use "dead" list to autoreap current exit: reparent: call forget_original_parent() under tasklist_lock exit: reparent: avoid find_new_reaper() if no children exit: reparent: introduce find_alive_thread() exit: reparent: introduce find_child_reaper() exit: reparent: document the ->has_child_subreaper checks exit: reparent: s/while_each_thread/for_each_thread/ in find_new_reaper() exit: reparent: fix the cross-namespace PR_SET_CHILD_SUBREAPER reparenting exit: reparent: fix the dead-parent PR_SET_CHILD_SUBREAPER reparenting exit: proc: don't try to flush /proc/tgid/task/tgid exit: release_task: fix the comment about group leader accounting exit: wait: drop tasklist_lock before psig->c* accounting exit: wait: don't use zombie->real_parent exit: wait: cleanup the ptrace_reparented() checks usermodehelper: kill the kmod_thread_locker logic usermodehelper: don't use CLONE_VFORK for ____call_usermodehelper() fs/hfs/catalog.c: fix comparison bug in hfs_cat_keycmp nilfs2: fix the nilfs_iget() vs. nilfs_new_inode() races ... |
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Joe Perches
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a39d4a857d |
printk: add and use LOGLEVEL_<level> defines for KERN_<LEVEL> equivalents
Use #defines instead of magic values. Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jason Baron <jbaron@akamai.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Joe Perches
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1dc6244bd6 |
printk: remove used-once early_vprintk
Eliminate the unlikely possibility of message interleaving for early_printk/early_vprintk use. early_vprintk can be done via the %pV extension so remove this unnecessary function and change early_printk to have the equivalent vprintk code. All uses of early_printk already end with a newline so also remove the unnecessary newline from the early_printk function. Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Chris Metcalf <cmetcalf@tilera.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Prarit Bhargava
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9e3961a097 |
kernel: add panic_on_warn
There have been several times where I have had to rebuild a kernel to
cause a panic when hitting a WARN() in the code in order to get a crash
dump from a system. Sometimes this is easy to do, other times (such as
in the case of a remote admin) it is not trivial to send new images to
the user.
A much easier method would be a switch to change the WARN() over to a
panic. This makes debugging easier in that I can now test the actual
image the WARN() was seen on and I do not have to engage in remote
debugging.
This patch adds a panic_on_warn kernel parameter and
/proc/sys/kernel/panic_on_warn calls panic() in the
warn_slowpath_common() path. The function will still print out the
location of the warning.
An example of the panic_on_warn output:
The first line below is from the WARN_ON() to output the WARN_ON()'s
location. After that the panic() output is displayed.
WARNING: CPU: 30 PID: 11698 at /home/prarit/dummy_module/dummy-module.c:25 init_dummy+0x1f/0x30 [dummy_module]()
Kernel panic - not syncing: panic_on_warn set ...
CPU: 30 PID: 11698 Comm: insmod Tainted: G W OE 3.17.0+ #57
Hardware name: Intel Corporation S2600CP/S2600CP, BIOS RMLSDP.86I.00.29.D696.1311111329 11/11/2013
0000000000000000 000000008e3f87df ffff88080f093c38 ffffffff81665190
0000000000000000 ffffffff818aea3d ffff88080f093cb8 ffffffff8165e2ec
ffffffff00000008 ffff88080f093cc8 ffff88080f093c68 000000008e3f87df
Call Trace:
[<ffffffff81665190>] dump_stack+0x46/0x58
[<ffffffff8165e2ec>] panic+0xd0/0x204
[<ffffffffa038e05f>] ? init_dummy+0x1f/0x30 [dummy_module]
[<ffffffff81076b90>] warn_slowpath_common+0xd0/0xd0
[<ffffffffa038e040>] ? dummy_greetings+0x40/0x40 [dummy_module]
[<ffffffff81076c8a>] warn_slowpath_null+0x1a/0x20
[<ffffffffa038e05f>] init_dummy+0x1f/0x30 [dummy_module]
[<ffffffff81002144>] do_one_initcall+0xd4/0x210
[<ffffffff811b52c2>] ? __vunmap+0xc2/0x110
[<ffffffff810f8889>] load_module+0x16a9/0x1b30
[<ffffffff810f3d30>] ? store_uevent+0x70/0x70
[<ffffffff810f49b9>] ? copy_module_from_fd.isra.44+0x129/0x180
[<ffffffff810f8ec6>] SyS_finit_module+0xa6/0xd0
[<ffffffff8166cf29>] system_call_fastpath+0x12/0x17
Successfully tested by me.
hpa said: There is another very valid use for this: many operators would
rather a machine shuts down than being potentially compromised either
functionally or security-wise.
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Acked-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Yann Droneaud
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f938612dd9 |
include/linux/file.h: remove get_unused_fd() macro
Macro get_unused_fd() is used to allocate a file descriptor with default flags. Those default flags (0) don't enable close-on-exec. This can be seen as an unsafe default: in most case close-on-exec should be enabled to not leak file descriptor across exec(). It would be better to have a "safer" default set of flags, eg. O_CLOEXEC must be used to enable close-on-exec. Instead this patch removes get_unused_fd() so that out of tree modules won't be affect by a runtime behavor change which might introduce other kind of bugs: it's better to catch the change at build time, making it easier to fix. Removing the macro will also promote use of get_unused_fd_flags() (or anon_inode_getfd()) with flags provided by userspace. Or, if flags cannot be given by userspace, with flags set to O_CLOEXEC by default. Signed-off-by: Yann Droneaud <ydroneaud@opteya.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Oleg Nesterov
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7c8bd2322c |
exit: ptrace: shift "reap dead" code from exit_ptrace() to forget_original_parent()
Now that forget_original_parent() uses ->ptrace_entry for EXIT_DEAD tasks, we can simply pass "dead_children" list to exit_ptrace() and remove another release_task() loop. Plus this way we do not need to drop and reacquire tasklist_lock. Also shift the list_empty(ptraced) check, if we want this optimization it makes sense to eliminate the function call altogether. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: Aaron Tomlin <atomlin@redhat.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com>, Cc: Sterling Alexander <stalexan@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Roland McGrath <roland@hack.frob.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Johannes Weiner
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9edad6ea0f |
mm: move page->mem_cgroup bad page handling into generic code
Now that the external page_cgroup data structure and its lookup is gone, let the generic bad_page() check for page->mem_cgroup sanity. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Michal Hocko <mhocko@suse.cz> Acked-by: Vladimir Davydov <vdavydov@parallels.com> Acked-by: David S. Miller <davem@davemloft.net> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: "Kirill A. Shutemov" <kirill@shutemov.name> Cc: Tejun Heo <tj@kernel.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Johannes Weiner
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5d1ea48bdd |
mm: page_cgroup: rename file to mm/swap_cgroup.c
Now that the external page_cgroup data structure and its lookup is gone, the only code remaining in there is swap slot accounting. Rename it and move the conditional compilation into mm/Makefile. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Michal Hocko <mhocko@suse.cz> Acked-by: Vladimir Davydov <vdavydov@parallels.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: "Kirill A. Shutemov" <kirill@shutemov.name> Cc: Tejun Heo <tj@kernel.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Johannes Weiner
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1306a85aed |
mm: embed the memcg pointer directly into struct page
Memory cgroups used to have 5 per-page pointers. To allow users to
disable that amount of overhead during runtime, those pointers were
allocated in a separate array, with a translation layer between them and
struct page.
There is now only one page pointer remaining: the memcg pointer, that
indicates which cgroup the page is associated with when charged. The
complexity of runtime allocation and the runtime translation overhead is
no longer justified to save that *potential* 0.19% of memory. With
CONFIG_SLUB, page->mem_cgroup actually sits in the doubleword padding
after the page->private member and doesn't even increase struct page,
and then this patch actually saves space. Remaining users that care can
still compile their kernels without CONFIG_MEMCG.
text data bss dec hex filename
8828345 1725264 983040 11536649 b00909 vmlinux.old
8827425 1725264 966656 11519345 afc571 vmlinux.new
[mhocko@suse.cz: update Documentation/cgroups/memory.txt]
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Vladimir Davydov <vdavydov@parallels.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: Konstantin Khlebnikov <koct9i@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Michal Hocko
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e4bd6a0248 |
mm, memcg: fix potential undefined behaviour in page stat accounting
Since commit
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Johannes Weiner
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2314b42db6 |
mm: memcontrol: drop bogus RCU locking from mem_cgroup_same_or_subtree()
None of the mem_cgroup_same_or_subtree() callers actually require it to take the RCU lock, either because they hold it themselves or they have css references. Remove it. To make the API change clear, rename the leftover helper to mem_cgroup_is_descendant() to match cgroup_is_descendant(). Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Vladimir Davydov <vdavydov@parallels.com> Acked-by: Michal Hocko <mhocko@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Johannes Weiner
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413918bb61 |
mm: memcontrol: pull the NULL check from __mem_cgroup_same_or_subtree()
The NULL in mm_match_cgroup() comes from a possibly exiting mm->owner. It makes a lot more sense to check where it's looked up, rather than check for it in __mem_cgroup_same_or_subtree() where it's unexpected. No other callsite passes NULL to __mem_cgroup_same_or_subtree(). Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Vladimir Davydov <vdavydov@parallels.com> Acked-by: Michal Hocko <mhocko@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Vladimir Davydov
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b047501cd9 |
memcg: use generic slab iterators for showing slabinfo
Let's use generic slab_start/next/stop for showing memcg caches info. In contrast to the current implementation, this will work even if all memcg caches' info doesn't fit into a seq buffer (a page), plus it simply looks neater. Actually, the main reason I do this isn't mere cleanup. I'm going to zap the memcg_slab_caches list, because I find it useless provided we have the slab_caches list, and this patch is a step in this direction. It should be noted that before this patch an attempt to read memory.kmem.slabinfo of a cgroup that doesn't have kmem limit set resulted in -EIO, while after this patch it will silently show nothing except the header, but I don't think it will frustrate anyone. Signed-off-by: Vladimir Davydov <vdavydov@parallels.com> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Sasha Levin
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97ad2be1da |
mm, hugetlb: correct bit shift in hstate_sizelog()
hstate_sizelog() would shift left an int rather than long, triggering undefined behaviour and passing an incorrect value when the requested page size was more than 4GB, thus breaking >4GB pages. Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Andrey Ryabinin <a.ryabinin@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Johannes Weiner
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2983331575 |
mm: memcontrol: remove unnecessary PCG_USED pc->mem_cgroup valid flag
pc->mem_cgroup had to be left intact after uncharge for the final LRU
removal, and !PCG_USED indicated whether the page was uncharged. But
since commit
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Johannes Weiner
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f4aaa8b43d |
mm: memcontrol: remove unnecessary PCG_MEM memory charge flag
PCG_MEM is a remnant from an earlier version of
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Johannes Weiner
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18eca2e636 |
mm: memcontrol: remove unnecessary PCG_MEMSW memory+swap charge flag
Now that mem_cgroup_swapout() fully uncharges the page, every page that is still in use when reaching mem_cgroup_uncharge() is known to carry both the memory and the memory+swap charge. Simplify the uncharge path and remove the PCG_MEMSW page flag accordingly. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Hugh Dickins <hughd@google.com> Acked-by: Michal Hocko <mhocko@suse.cz> Reviewed-by: Vladimir Davydov <vdavydov@parallels.com> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Vlastimil Babka
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97d47a65be |
mm, compaction: simplify deferred compaction
Since commit
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Vlastimil Babka
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ebff398017 |
mm, compaction: pass classzone_idx and alloc_flags to watermark checking
Compaction relies on zone watermark checks for decisions such as if it's worth to start compacting in compaction_suitable() or whether compaction should stop in compact_finished(). The watermark checks take classzone_idx and alloc_flags parameters, which are related to the memory allocation request. But from the context of compaction they are currently passed as 0, including the direct compaction which is invoked to satisfy the allocation request, and could therefore know the proper values. The lack of proper values can lead to mismatch between decisions taken during compaction and decisions related to the allocation request. Lack of proper classzone_idx value means that lowmem_reserve is not taken into account. This has manifested (during recent changes to deferred compaction) when DMA zone was used as fallback for preferred Normal zone. compaction_suitable() without proper classzone_idx would think that the watermarks are already satisfied, but watermark check in get_page_from_freelist() would fail. Because of this problem, deferring compaction has extra complexity that can be removed in the following patch. The issue (not confirmed in practice) with missing alloc_flags is opposite in nature. For allocations that include ALLOC_HIGH, ALLOC_HIGHER or ALLOC_CMA in alloc_flags (the last includes all MOVABLE allocations on CMA-enabled systems) the watermark checking in compaction with 0 passed will be stricter than in get_page_from_freelist(). In these cases compaction might be running for a longer time than is really needed. Another issue compaction_suitable() is that the check for "does the zone need compaction at all?" comes only after the check "does the zone have enough free free pages to succeed compaction". The latter considers extra pages for migration and can therefore in some situations fail and return COMPACT_SKIPPED, although the high-order allocation would succeed and we should return COMPACT_PARTIAL. This patch fixes these problems by adding alloc_flags and classzone_idx to struct compact_control and related functions involved in direct compaction and watermark checking. Where possible, all other callers of compaction_suitable() pass proper values where those are known. This is currently limited to classzone_idx, which is sometimes known in kswapd context. However, the direct reclaim callers should_continue_reclaim() and compaction_ready() do not currently know the proper values, so the coordination between reclaim and compaction may still not be as accurate as it could. This can be fixed later, if it's shown to be an issue. Additionaly the checks in compact_suitable() are reordered to address the second issue described above. The effect of this patch should be slightly better high-order allocation success rates and/or less compaction overhead, depending on the type of allocations and presence of CMA. It allows simplifying deferred compaction code in a followup patch. When testing with stress-highalloc, there was some slight improvement (which might be just due to variance) in success rates of non-THP-like allocations. Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Cc: Minchan Kim <minchan@kernel.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Michal Nazarewicz <mina86@mina86.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Christoph Lameter <cl@linux.com> Acked-by: Rik van Riel <riel@redhat.com> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Vlastimil Babka
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93481ff0e5 |
mm: introduce single zone pcplists drain
The functions for draining per-cpu pages back to buddy allocators currently always operate on all zones. There are however several cases where the drain is only needed in the context of a single zone, and spilling other pcplists is a waste of time both due to the extra spilling and later refilling. This patch introduces new zone pointer parameter to drain_all_pages() and changes the dummy parameter of drain_local_pages() to be also a zone pointer. When NULL is passed, the functions operate on all zones as usual. Passing a specific zone pointer reduces the work to the single zone. All callers are updated to pass the NULL pointer in this patch. Conversion to single zone (where appropriate) is done in further patches. Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Rik van Riel <riel@redhat.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Cc: Xishi Qiu <qiuxishi@huawei.com> Cc: Vladimir Davydov <vdavydov@parallels.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Michal Nazarewicz <mina86@mina86.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Johannes Weiner
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64f2199389 |
mm: memcontrol: remove obsolete kmemcg pinning tricks
As charges now pin the css explicitely, there is no more need for kmemcg to acquire a proxy reference for outstanding pages during offlining, or maintain state to identify such "dead" groups. This was the last user of the uncharge functions' return values, so remove them as well. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Vladimir Davydov <vdavydov@parallels.com> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: David Rientjes <rientjes@google.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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|
Johannes Weiner
|
e8ea14cc6e |
mm: memcontrol: take a css reference for each charged page
Charges currently pin the css indirectly by playing tricks during css_offline(): user pages stall the offlining process until all of them have been reparented, whereas kmemcg acquires a keep-alive reference if outstanding kernel pages are detected at that point. In preparation for removing all this complexity, make the pinning explicit and acquire a css references for every charged page. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Vladimir Davydov <vdavydov@parallels.com> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: David Rientjes <rientjes@google.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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|
Johannes Weiner
|
5b1efc027c |
kernel: res_counter: remove the unused API
All memory accounting and limiting has been switched over to the lockless page counters. Bye, res_counter! [akpm@linux-foundation.org: update Documentation/cgroups/memory.txt] [mhocko@suse.cz: ditch the last remainings of res_counter] Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Vladimir Davydov <vdavydov@parallels.com> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: Tejun Heo <tj@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Michal Hocko <mhocko@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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|
Johannes Weiner
|
71f87bee38 |
mm: hugetlb_cgroup: convert to lockless page counters
Abandon the spinlock-protected byte counters in favor of the unlocked page counters in the hugetlb controller as well. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Vladimir Davydov <vdavydov@parallels.com> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: Tejun Heo <tj@kernel.org> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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|
Johannes Weiner
|
3e32cb2e0a |
mm: memcontrol: lockless page counters
Memory is internally accounted in bytes, using spinlock-protected 64-bit
counters, even though the smallest accounting delta is a page. The
counter interface is also convoluted and does too many things.
Introduce a new lockless word-sized page counter API, then change all
memory accounting over to it. The translation from and to bytes then only
happens when interfacing with userspace.
The removed locking overhead is noticable when scaling beyond the per-cpu
charge caches - on a 4-socket machine with 144-threads, the following test
shows the performance differences of 288 memcgs concurrently running a
page fault benchmark:
vanilla:
18631648.500498 task-clock (msec) # 140.643 CPUs utilized ( +- 0.33% )
1,380,638 context-switches # 0.074 K/sec ( +- 0.75% )
24,390 cpu-migrations # 0.001 K/sec ( +- 8.44% )
1,843,305,768 page-faults # 0.099 M/sec ( +- 0.00% )
50,134,994,088,218 cycles # 2.691 GHz ( +- 0.33% )
<not supported> stalled-cycles-frontend
<not supported> stalled-cycles-backend
8,049,712,224,651 instructions # 0.16 insns per cycle ( +- 0.04% )
1,586,970,584,979 branches # 85.176 M/sec ( +- 0.05% )
1,724,989,949 branch-misses # 0.11% of all branches ( +- 0.48% )
132.474343877 seconds time elapsed ( +- 0.21% )
lockless:
12195979.037525 task-clock (msec) # 133.480 CPUs utilized ( +- 0.18% )
832,850 context-switches # 0.068 K/sec ( +- 0.54% )
15,624 cpu-migrations # 0.001 K/sec ( +- 10.17% )
1,843,304,774 page-faults # 0.151 M/sec ( +- 0.00% )
32,811,216,801,141 cycles # 2.690 GHz ( +- 0.18% )
<not supported> stalled-cycles-frontend
<not supported> stalled-cycles-backend
9,999,265,091,727 instructions # 0.30 insns per cycle ( +- 0.10% )
2,076,759,325,203 branches # 170.282 M/sec ( +- 0.12% )
1,656,917,214 branch-misses # 0.08% of all branches ( +- 0.55% )
91.369330729 seconds time elapsed ( +- 0.45% )
On top of improved scalability, this also gets rid of the icky long long
types in the very heart of memcg, which is great for 32 bit and also makes
the code a lot more readable.
Notable differences between the old and new API:
- res_counter_charge() and res_counter_charge_nofail() become
page_counter_try_charge() and page_counter_charge() resp. to match
the more common kernel naming scheme of try_do()/do()
- res_counter_uncharge_until() is only ever used to cancel a local
counter and never to uncharge bigger segments of a hierarchy, so
it's replaced by the simpler page_counter_cancel()
- res_counter_set_limit() is replaced by page_counter_limit(), which
expects its callers to serialize against themselves
- res_counter_memparse_write_strategy() is replaced by
page_counter_limit(), which rounds down to the nearest page size -
rather than up. This is more reasonable for explicitely requested
hard upper limits.
- to keep charging light-weight, page_counter_try_charge() charges
speculatively, only to roll back if the result exceeds the limit.
Because of this, a failing bigger charge can temporarily lock out
smaller charges that would otherwise succeed. The error is bounded
to the difference between the smallest and the biggest possible
charge size, so for memcg, this means that a failing THP charge can
send base page charges into reclaim upto 2MB (4MB) before the limit
would have been reached. This should be acceptable.
[akpm@linux-foundation.org: add includes for WARN_ON_ONCE and memparse]
[akpm@linux-foundation.org: add includes for WARN_ON_ONCE, memparse, strncmp, and PAGE_SIZE]
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Vladimir Davydov <vdavydov@parallels.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
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|
Linus Torvalds
|
cbfe0de303 |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull VFS changes from Al Viro:
"First pile out of several (there _definitely_ will be more). Stuff in
this one:
- unification of d_splice_alias()/d_materialize_unique()
- iov_iter rewrite
- killing a bunch of ->f_path.dentry users (and f_dentry macro).
Getting that completed will make life much simpler for
unionmount/overlayfs, since then we'll be able to limit the places
sensitive to file _dentry_ to reasonably few. Which allows to have
file_inode(file) pointing to inode in a covered layer, with dentry
pointing to (negative) dentry in union one.
Still not complete, but much closer now.
- crapectomy in lustre (dead code removal, mostly)
- "let's make seq_printf return nothing" preparations
- assorted cleanups and fixes
There _definitely_ will be more piles"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (63 commits)
copy_from_iter_nocache()
new helper: iov_iter_kvec()
csum_and_copy_..._iter()
iov_iter.c: handle ITER_KVEC directly
iov_iter.c: convert copy_to_iter() to iterate_and_advance
iov_iter.c: convert copy_from_iter() to iterate_and_advance
iov_iter.c: get rid of bvec_copy_page_{to,from}_iter()
iov_iter.c: convert iov_iter_zero() to iterate_and_advance
iov_iter.c: convert iov_iter_get_pages_alloc() to iterate_all_kinds
iov_iter.c: convert iov_iter_get_pages() to iterate_all_kinds
iov_iter.c: convert iov_iter_npages() to iterate_all_kinds
iov_iter.c: iterate_and_advance
iov_iter.c: macros for iterating over iov_iter
kill f_dentry macro
dcache: fix kmemcheck warning in switch_names
new helper: audit_file()
nfsd_vfs_write(): use file_inode()
ncpfs: use file_inode()
kill f_dentry uses
lockd: get rid of ->f_path.dentry->d_sb
...
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Linus Torvalds
|
1366f5d312 |
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull quota updates from Jan Kara: "Quota improvements and some minor cleanups. The main portion in the pull request are changes which move i_dquot array from struct inode into fs-private part of an inode which saves memory for filesystems which don't use VFS quotas" * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: udf: One function call less in udf_fill_super() after error detection udf: Deletion of unnecessary checks before the function call "iput" jbd: Deletion of an unnecessary check before the function call "iput" vfs: Remove i_dquot field from inode jfs: Convert to private i_dquot field reiserfs: Convert to private i_dquot field ocfs2: Convert to private i_dquot field ext4: Convert to private i_dquot field ext3: Convert to private i_dquot field ext2: Convert to private i_dquot field quota: Use function to provide i_dquot pointers xfs: Set allowed quota types gfs2: Set allowed quota types quota: Allow each filesystem to specify which quota types it supports quota: Remove const from function declarations quota: Add log level to printk |
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Linus Torvalds
|
4b0a268eec |
Merge tag 'for-f2fs-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim:
"This patch-set includes lots of bug fixes based on clean-ups and
refactored codes. And inline_dir was introduced and two minor mount
options were added. Details from signed tag:
This series includes the following enhancement with refactored flows.
- fix inmemory page operations
- fix wrong inline_data & inline_dir logics
- enhance memory and IO control under memory pressure
- consider preemption on radix_tree operation
- fix memory leaks and deadlocks
But also, there are a couple of new features:
- support inline_dir to store dentries inside inode page
- add -o fastboot to reduce booting time
- implement -o dirsync
And a lot of clean-ups and minor bug fixes as well"
* tag 'for-f2fs-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (88 commits)
f2fs: avoid to ra unneeded blocks in recover flow
f2fs: introduce is_valid_blkaddr to cleanup codes in ra_meta_pages
f2fs: fix to enable readahead for SSA/CP blocks
f2fs: use atomic for counting inode with inline_{dir,inode} flag
f2fs: cleanup path to need cp at fsync
f2fs: check if inode state is dirty at fsync
f2fs: count the number of inmemory pages
f2fs: release inmemory pages when the file was closed
f2fs: set page private for inmemory pages for truncation
f2fs: count inline_xx in do_read_inode
f2fs: do retry operations with cond_resched
f2fs: call radix_tree_preload before radix_tree_insert
f2fs: use rw_semaphore for nat entry lock
f2fs: fix missing kmem_cache_free
f2fs: more fast lookup for gc_inode list
f2fs: cleanup redundant macro
f2fs: fix to return correct error number in f2fs_write_begin
f2fs: cleanup if-statement of phase in gc_data_segment
f2fs: fix to recover converted inline_data
f2fs: make clean the page before writing
...
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Linus Torvalds
|
1715ac63d3 |
In contrast to recent merge windows, there are a number of interesting features
this time. There is a set of patches to improve performance in relation to block reservations. Some correctness fixes for fallocate, and an update to the freeze/thaw code which greatly simplyfies this code path. In addition there is a set of clean ups from Al Viro too. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.15 (GNU/Linux) iQIcBAABAgAGBQJUher6AAoJEMrg3m4a/8jSaJwP/Ai9cohCBohYgzgBIas0L8zy H6BwYwLoUU0E7UlL7RBkjE9ZNL2meFcDM4NGpzXkOcJaJw5hkWHcwSmLBOU1V27N v3wgaLd1J2BXwaYMrJ0XTqbdzU63Y27KkXOHPBr+UwEtd3azeugNX2sfgrKg8cqd 6AM8sbPifGs+2u1viTbtAhirIo/TE2kk60OuBeX6hCNjvN/PcOKKF+ISewtpqfFD 1vHwjVDX7USuUkjGQRCmM7A032b2YilMf+57Oe/a2Q+CyI7E41259nrwWC0/vcst AuKb48WyL6Y6YLMXA2HlqxeYkyEAyr0pk0D4hRYYofebSn3d4mDaxvTU0y/vKuL1 bD9J3niPv44B9OtrjzbKf0Utsk9cUeYMOcb6ydMTcEYdMIEITG21N/yR1bU2MkYt 4KpnjcdEtoNteo0OsxtWq2poL0RxlKde8P7wUtwvnrK0wcVDdWbLU1iXf0t2r2RF JO9ZSTYrKoFvTpg34zCcUlHBMarZSdP1Kou9hUkTXmZtmirwqR+9T6GtexD60jxz TIRMHOf8HXz9wM4kUI442IBaHIW38AsXNEPVUp3vk04qLCqCPmE7ISBvAB4NHbIn Yw/X9fJwK3hn+/R9+u09aJKLGDKWwlSOVdTb+yFgQcqz6BcaBoZMdamiKQcOGEk2 5qQ8J/F5f87BZOvuUUpI =t1F/ -----END PGP SIGNATURE----- Merge tag 'gfs2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-nmw Pull GFS2 update from Steven Whitehouse: "In contrast to recent merge windows, there are a number of interesting features this time: There is a set of patches to improve performance in relation to block reservations. Some correctness fixes for fallocate, and an update to the freeze/thaw code which greatly simplyfies this code path. In addition there is a set of clean ups from Al Viro too" * tag 'gfs2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-nmw: GFS2: gfs2_atomic_open(): simplify the use of finish_no_open() GFS2: gfs2_dir_get_hash_table(): avoiding deferred vfree() is easy here... GFS2: use kvfree() instead of open-coding it GFS2: gfs2_create_inode(): don't bother with d_splice_alias() GFS2: bugger off early if O_CREAT open finds a directory GFS2: Deletion of unnecessary checks before two function calls GFS2: update freeze code to use freeze/thaw_super on all nodes fs: add freeze_super/thaw_super fs hooks GFS2: Update timestamps on fallocate GFS2: Update i_size properly on fallocate GFS2: Use inode_newsize_ok and get_write_access in fallocate GFS2: If we use up our block reservation, request more next time GFS2: Only increase rs_sizehint GFS2: Set of distributed preferences for rgrps GFS2: directly return gfs2_dir_check() |
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|
Linus Torvalds
|
08e2fb6ce6 |
On a system that restricts access to dmesg, don't let people
side-step that by reading copies that pstore saved. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJUheJgAAoJEKurIx+X31iB5F0P/jdpAw6cI26icGiOcRvRYvce jLq/WbGggxZlx3rtgGpekJmcJ1NBBTLdyx4b86q4q/zstQkoJ9lqGCn63YcIMJNB pdctmbkGyoQQXBTAzSCFs6pybMUmtYKMDiT3OJddcCm4fUjd4RQHvNP+5ESsf0lQ 9YpIS+rZOtB2/5N6/i4+Lnaffc3s5gXw/dJMxOm/laWtRFRyhf22YP18cRp5LmuV NHqu1NoeLnar/qL6plPl73lEyZVOPRC01T7OWmmCkcLieYPGkqQlkoXp95VBKf5u CvD167oM71OccMa0gOTlCS8a6y5KO6y8I+YAR60iANTLDh+rHZiwNj1gY4v/Z29m 2ba1xAulQrpCxqml6eVxAKaF+4HXaXVXKqjQIivJcGyfYf6BXLMvC0M3Lsv7XQdz HKl++o0JELDEJjVW0i9Wa5CjgcqXdvuRXOoKDaKTZWff2yfUxqIN5Xl7zIV2kgVy ZqPDBHJSmHjuzmJ6inhPkmdS2uz94PVSE7ykeaa8iCBbpdsS+FchtF2sRMvUhU23 ekHsxk0Mk/pS5EBNc6rrrM9NtKrUQMa1e/oT5G7QowksDeNpsPjx92OeUImxgh3x +hmObN9vx6SepwVSfjI1rwrMsAknphJfPmyi/XJgkVbfRMCv2we1npvYd6hqFUMV daekMzGOi5eqoaWB8hje =Ezg0 -----END PGP SIGNATURE----- Merge tag 'please-pull-pstore' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux Pull pstore fixes from Tony Luck: "On a system that restricts access to dmesg, don't let people side-step that by reading copies that pstore saved" * tag 'please-pull-pstore' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux: syslog: Provide stub check_syslog_permissions pstore: Honor dmesg_restrict sysctl on dmesg dumps pstore/ram: Strip ramoops header for correct decompression |
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|
Linus Torvalds
|
e20db597b6 |
NFS client updates for Linux 3.19
Highlights include:
Features:
- NFSv4.2 client support for hole punching and preallocation.
- Further RPC/RDMA client improvements.
- Add more RPC transport debugging tracepoints.
- Add RPC debugging tools in debugfs.
Bugfixes:
- Stable fix for layoutget error handling
- Fix a change in COMMIT behaviour resulting from the recent io code updates
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Merge tag 'nfs-for-3.19-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"Highlights include:
Features:
- NFSv4.2 client support for hole punching and preallocation.
- Further RPC/RDMA client improvements.
- Add more RPC transport debugging tracepoints.
- Add RPC debugging tools in debugfs.
Bugfixes:
- Stable fix for layoutget error handling
- Fix a change in COMMIT behaviour resulting from the recent io code
updates"
* tag 'nfs-for-3.19-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (28 commits)
sunrpc: add a debugfs rpc_xprt directory with an info file in it
sunrpc: add debugfs file for displaying client rpc_task queue
nfs: Add DEALLOCATE support
nfs: Add ALLOCATE support
NFS: Clean up nfs4_init_callback()
NFS: SETCLIENTID XDR buffer sizes are incorrect
SUNRPC: serialize iostats updates
xprtrdma: Display async errors
xprtrdma: Enable pad optimization
xprtrdma: Re-write rpcrdma_flush_cqs()
xprtrdma: Refactor tasklet scheduling
xprtrdma: unmap all FMRs during transport disconnect
xprtrdma: Cap req_cqinit
xprtrdma: Return an errno from rpcrdma_register_external()
nfs: define nfs_inc_fscache_stats and using it as possible
nfs: replace nfs_add_stats with nfs_inc_stats when add one
NFS: Deletion of unnecessary checks before the function call "nfs_put_client"
sunrpc: eliminate RPC_TRACEPOINTS
sunrpc: eliminate RPC_DEBUG
lockd: eliminate LOCKD_DEBUG
...
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|
Linus Torvalds
|
d82012695e |
Merge branch 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull more 2038 timer work from Thomas Gleixner: "Two more patches for the ongoing 2038 work: - New accessors to clock MONOTONIC and REALTIME seconds This is a seperate branch as Arnd has follow up work depending on this" * 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: timekeeping: Provide y2038 safe accessor to the seconds portion of CLOCK_REALTIME timekeeping: Provide fast accessor to the seconds part of CLOCK_MONOTONIC |
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Linus Torvalds
|
3eb5b893eb |
Merge branch 'x86-mpx-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 MPX support from Thomas Gleixner: "This enables support for x86 MPX. MPX is a new debug feature for bound checking in user space. It requires kernel support to handle the bound tables and decode the bound violating instruction in the trap handler" * 'x86-mpx-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: asm-generic: Remove asm-generic arch_bprm_mm_init() mm: Make arch_unmap()/bprm_mm_init() available to all architectures x86: Cleanly separate use of asm-generic/mm_hooks.h x86 mpx: Change return type of get_reg_offset() fs: Do not include mpx.h in exec.c x86, mpx: Add documentation on Intel MPX x86, mpx: Cleanup unused bound tables x86, mpx: On-demand kernel allocation of bounds tables x86, mpx: Decode MPX instruction to get bound violation information x86, mpx: Add MPX-specific mmap interface x86, mpx: Introduce VM_MPX to indicate that a VMA is MPX specific x86, mpx: Add MPX to disabled features ia64: Sync struct siginfo with general version mips: Sync struct siginfo with general version mpx: Extend siginfo structure to include bound violation information x86, mpx: Rename cfg_reg_u and status_reg x86: mpx: Give bndX registers actual names x86: Remove arbitrary instruction size limit in instruction decoder |
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Linus Torvalds
|
9e66645d72 |
Merge branch 'irq-irqdomain-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq domain updates from Thomas Gleixner:
"The real interesting irq updates:
- Support for hierarchical irq domains:
For complex interrupt routing scenarios where more than one
interrupt related chip is involved we had no proper representation
in the generic interrupt infrastructure so far. That made people
implement rather ugly constructs in their nested irq chip
implementations. The main offenders are x86 and arm/gic.
To distangle that mess we have now hierarchical irqdomains which
seperate the various interrupt chips and connect them via the
hierarchical domains. That keeps the domain specific details
internal to the particular hierarchy level and removes the
criss/cross referencing of chip internals. The resulting hierarchy
for a complex x86 system will look like this:
vector mapped: 74
msi-0 mapped: 2
dmar-ir-1 mapped: 69
ioapic-1 mapped: 4
ioapic-0 mapped: 20
pci-msi-2 mapped: 45
dmar-ir-0 mapped: 3
ioapic-2 mapped: 1
pci-msi-1 mapped: 2
htirq mapped: 0
Neither ioapic nor pci-msi know about the dmar interrupt remapping
between themself and the vector domain. If interrupt remapping is
disabled ioapic and pci-msi become direct childs of the vector
domain.
In hindsight we should have done that years ago, but in hindsight
we always know better :)
- Support for generic MSI interrupt domain handling
We have more and more non PCI related MSI interrupts, so providing
a generic infrastructure for this is better than having all
affected architectures implementing their own private hacks.
- Support for PCI-MSI interrupt domain handling, based on the generic
MSI support.
This part carries the pci/msi branch from Bjorn Helgaas pci tree to
avoid a massive conflict. The PCI/MSI parts are acked by Bjorn.
I have two more branches on top of this. The full conversion of x86
to hierarchical domains and a partial conversion of arm/gic"
* 'irq-irqdomain-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (41 commits)
genirq: Move irq_chip_write_msi_msg() helper to core
PCI/MSI: Allow an msi_controller to be associated to an irq domain
PCI/MSI: Provide mechanism to alloc/free MSI/MSIX interrupt from irqdomain
PCI/MSI: Enhance core to support hierarchy irqdomain
PCI/MSI: Move cached entry functions to irq core
genirq: Provide default callbacks for msi_domain_ops
genirq: Introduce msi_domain_alloc/free_irqs()
asm-generic: Add msi.h
genirq: Add generic msi irq domain support
genirq: Introduce callback irq_chip.irq_write_msi_msg
genirq: Work around __irq_set_handler vs stacked domains ordering issues
irqdomain: Introduce helper function irq_domain_add_hierarchy()
irqdomain: Implement a method to automatically call parent domains alloc/free
genirq: Introduce helper irq_domain_set_info() to reduce duplicated code
genirq: Split out flow handler typedefs into seperate header file
genirq: Add IRQ_SET_MASK_OK_DONE to support stacked irqchip
genirq: Introduce irq_chip.irq_compose_msi_msg() to support stacked irqchip
genirq: Add more helper functions to support stacked irq_chip
genirq: Introduce helper functions to support stacked irq_chip
irqdomain: Do irq_find_mapping and set_type for hierarchy irqdomain in case OF
...
|
||
|
Linus Torvalds
|
ecb50f0afd |
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq core updates from Thomas Gleixner:
"This is the first (boring) part of irq updates:
- support for big endian I/O accessors in the generic irq chip
- cleanup of brcmstb/bcm7120 drivers so they can be reused for non
ARM SoCs
- the usual pile of fixes and updates for the various ARM irq chips"
* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (25 commits)
irqchip: dw-apb-ictl: Add PM support
irqchip: dw-apb-ictl: Enable IRQ_GC_MASK_CACHE_PER_TYPE
irqchip: dw-apb-ictl: Always use use {readl|writel}_relaxed
ARM: orion: convert the irq_reg_{readl,writel} calls to the new API
irqchip: atmel-aic: Add missing entry for rm9200 irq fixups
irqchip: atmel-aic: Rename at91sam9_aic_irq_fixup for naming consistency
irqchip: atmel-aic: Add specific irq fixup function for sam9g45 and sam9rl
irqchip: atmel-aic: Add irq fixups for at91sam926x SoCs
irqchip: atmel-aic: Add irq fixup for RTT block
irqchip: brcmstb-l2: Convert driver to use irq_reg_{readl,writel}
irqchip: bcm7120-l2: Convert driver to use irq_reg_{readl,writel}
irqchip: bcm7120-l2: Decouple driver from brcmstb-l2
irqchip: bcm7120-l2: Extend driver to support 64+ bit controllers
irqchip: bcm7120-l2: Use gc->mask_cache to simplify suspend/resume functions
irqchip: bcm7120-l2: Fix missing nibble in gc->unused mask
irqchip: bcm7120-l2: Make sure all register accesses use base+offset
irqchip: bcm7120-l2, brcmstb-l2: Remove ARM Kconfig dependency
irqchip: bcm7120-l2: Eliminate bad IRQ check
irqchip: brcmstb-l2: Eliminate dependency on ARM code
genirq: Generic chip: Add big endian I/O accessors
...
|
||
|
Linus Torvalds
|
a157508c97 |
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer core updates from Thomas Gleixner: "The time(r) departement provides: - more infrastructure work on the year 2038 issue - a few fixes in the Armada SoC timers - the usual pile of fixlets and improvements" * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: clocksource: armada-370-xp: Use the reference clock on A375 SoC watchdog: orion: Use the reference clock on Armada 375 SoC clocksource: armada-370-xp: Add missing clock enable time: Fix sign bug in NTP mult overflow warning time: Remove timekeeping_inject_sleeptime() rtc: Update suspend/resume timing to use 64bit time rtc/lib: Provide y2038 safe rtc_tm_to_time()/rtc_time_to_tm() replacement time: Fixup comments to reflect usage of timespec64 time: Expose get_monotonic_coarse64() for in-kernel uses time: Expose getrawmonotonic64 for in-kernel uses time: Provide y2038 safe mktime() replacement time: Provide y2038 safe timekeeping_inject_sleeptime() replacement time: Provide y2038 safe do_settimeofday() replacement time: Complete NTP adjustment threshold judging conditions time: Avoid possible NTP adjustment mult overflow. time: Rename udelay_test.c to test_udelay.c clocksource: sirf: Remove hard-coded clock rate |
||
|
Linus Torvalds
|
86c6a2fddf |
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"The main changes in this cycle are:
- 'Nested Sleep Debugging', activated when CONFIG_DEBUG_ATOMIC_SLEEP=y.
This instruments might_sleep() checks to catch places that nest
blocking primitives - such as mutex usage in a wait loop. Such
bugs can result in hard to debug races/hangs.
Another category of invalid nesting that this facility will detect
is the calling of blocking functions from within schedule() ->
sched_submit_work() -> blk_schedule_flush_plug().
There's some potential for false positives (if secondary blocking
primitives themselves are not ready yet for this facility), but the
kernel will warn once about such bugs per bootup, so the warning
isn't much of a nuisance.
This feature comes with a number of fixes, for problems uncovered
with it, so no messages are expected normally.
- Another round of sched/numa optimizations and refinements, for
CONFIG_NUMA_BALANCING=y.
- Another round of sched/dl fixes and refinements.
Plus various smaller fixes and cleanups"
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits)
sched: Add missing rcu protection to wake_up_all_idle_cpus
sched/deadline: Introduce start_hrtick_dl() for !CONFIG_SCHED_HRTICK
sched/numa: Init numa balancing fields of init_task
sched/deadline: Remove unnecessary definitions in cpudeadline.h
sched/cpupri: Remove unnecessary definitions in cpupri.h
sched/deadline: Fix rq->dl.pushable_tasks bug in push_dl_task()
sched/fair: Fix stale overloaded status in the busiest group finding logic
sched: Move p->nr_cpus_allowed check to select_task_rq()
sched/completion: Document when to use wait_for_completion_io_*()
sched: Update comments about CLONE_NEWUTS and CLONE_NEWIPC
sched/fair: Kill task_struct::numa_entry and numa_group::task_list
sched: Refactor task_struct to use numa_faults instead of numa_* pointers
sched/deadline: Don't check CONFIG_SMP in switched_from_dl()
sched/deadline: Reschedule from switched_from_dl() after a successful pull
sched/deadline: Push task away if the deadline is equal to curr during wakeup
sched/deadline: Add deadline rq status print
sched/deadline: Fix artificial overrun introduced by yield_task_dl()
sched/rt: Clean up check_preempt_equal_prio()
sched/core: Use dl_bw_of() under rcu_read_lock_sched()
sched: Check if we got a shallowest_idle_cpu before searching for least_loaded_cpu
...
|
||
|
Linus Torvalds
|
5706ffd045 |
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf events update from Ingo Molnar:
"On the kernel side there's few changes, the one that stands out is
PEBS machine state sampling support on x86, by Stephane Eranian.
On the tooling side:
User visible tooling changes:
- Don't open the DWARF info multiple times, keeping instead a dwfl
handle in struct dso, greatly speeding up 'perf report' on powerpc.
(Sukadev Bhattiprolu)
- Introduce PARSE_OPT_DISABLED option flag and use it to avoid
showing undersired options in tools that provides frontends to
'perf record', like sched, kvm, etc (Namhyung Kim)
- Fallback to kallsyms when using the minimal 'ELF' loader (Arnaldo
Carvalho de Melo)
- Fix annotation with kcore (Adrian Hunter)
- Support source line numbers in annotate using a hotkey (Andi Kleen)
- Callchain improvements including:
* Enable printing the srcline in the history
* Make get_srcline fall back to sym+offset (Andi Kleen)
- TUI hist_entry browser fixes, including showing missing overhead
value for first level callchain. Detected comparing the output of
--stdio/--gui (that matched) with --tui, that had this problem.
(Namhyung Kim)
- Support handling complete branch stacks as histograms (Andi Kleen)
Tooling infrastructure changes:
- Prep work for supporting per-pkg and snapshot counters in 'perf
stat' (Jiri Olsa)
- 'perf stat' refactorings, moving stuff from it to evsel.c to use in
per-pkg/snapshot format changes (Jiri Olsa)
- Add per-pkg format file parsing (Matt Fleming)
- Clean up libelf feature support code (Namhyung Kim)
- Add gzip decompression support for kernel modules (Namhyung Kim)
- More prep patches for Intel PT, including a a thread stack and more
stuff made available via the database export mechanism (Adrian
Hunter)
- More Intel PT work, including a facility to export sample data
(comms, threads, symbol names, etc) in a database friendly way,
with an script to use this to create a postgresql database.
(Adrian Hunter)
- Make sure that thread->mg->machine points to the machine where the
thread exists (it was being set only for the kmaps kernel modules
case, do it as well for the mmaps) and use it to shorten function
signatures (Arnaldo Carvalho de Melo)
... and lots of other fixes and smaller improvements"
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (91 commits)
perf report: In branch stack mode use address history sorting
perf report: Add --branch-history option
perf callchain: Support handling complete branch stacks as histograms
perf stat: Add support for snapshot counters
perf stat: Add support for per-pkg counters
perf tools: Remove perf_evsel__read interface
perf stat: Use read_counter in read_counter_aggr
perf stat: Make read_counter work over the thread dimension
perf stat: Use perf_evsel__read_cb in read_counter
perf tools: Add snapshot format file parsing
perf tools: Add per-pkg format file parsing
perf evsel: Introduce perf_evsel__read_cb function
perf evsel: Introduce perf_counts_values__scale function
perf evsel: Introduce perf_evsel__compute_deltas function
perf tools: Allow to force redirect pr_debug to stderr.
perf tools: Fix segfault due to invalid kernel dso access
perf callchain: Make get_srcline fall back to sym+offset
perf symbols: Move bfd_demangle stubbing to its only user
perf callchain: Enable printing the srcline in the history
perf tools: Collapse first level callchain entry if it has sibling
...
|
||
|
Linus Torvalds
|
c30110608c |
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU updates from Ingo Molnar:
"These are the main changes in this cycle:
- Streamline RCU's use of per-CPU variables, shifting from "cpu"
arguments to functions to "this_"-style per-CPU variable
accessors.
- signal-handling RCU updates.
- real-time updates.
- torture-test updates.
- miscellaneous fixes.
- documentation updates"
* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (34 commits)
rcu: Fix FIXME in rcu_tasks_kthread()
rcu: More info about potential deadlocks with rcu_read_unlock()
rcu: Optimize cond_resched_rcu_qs()
rcu: Add sparse check for RCU_INIT_POINTER()
documentation: memory-barriers.txt: Correct example for reorderings
documentation: Add atomic_long_t to atomic_ops.txt
documentation: Additional restriction for control dependencies
documentation: Document RCU self test boot params
rcutorture: Fix rcu_torture_cbflood() memory leak
rcutorture: Remove obsolete kversion param in kvm.sh
rcutorture: Remove stale test configurations
rcutorture: Enable RCU self test in configs
rcutorture: Add early boot self tests
torture: Run Linux-kernel binary out of results directory
cpu: Avoid puts_pending overflow
rcu: Remove "cpu" argument to rcu_cleanup_after_idle()
rcu: Remove "cpu" argument to rcu_prepare_for_idle()
rcu: Remove "cpu" argument to rcu_needs_cpu()
rcu: Remove "cpu" argument to rcu_note_context_switch()
rcu: Remove "cpu" argument to rcu_preempt_check_callbacks()
...
|
||
|
Linus Torvalds
|
fe78c54b47 |
ARM: SoC/OMAP GPMC driver cleanup and move for 3.19
The GPMC driver has traditionally been considered a part of the OMAP platform code and tightly interweaved with some of the boards. With this cleanup, it has finally come to the point where it makes sense to move it out of arch/arm into drivers/memory, where we already have other drivers for similar hardware. The cleanups are still ongoing, with the goal of eventually having a standalone driver that does not require an interface to architecture code. This is a separate branch because of dependencies on multiple other branches, and to keep the drivers changes separate from the normal cleanups. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIVAwUAVIcj7mCrR//JCVInAQIEtBAAoxn09fc4oeyBy9HeAgcQSxglqlyiJzTG YeIYN3Hz9kCRh/KDG35OQDD0Zv6Yw3m4QLYym5x/W2atMl+7AwBOUKGAi6neEHzv DbhvmAr8/2I+3RnUQDAxcbqY/p3/sSatWsPgwrgXWmGJHQm5Ur/IfUcnOmqfA6w4 xag8EdwX43zxUCF7MFTdD5Vo4uzoYNtPaPHpEtFBn/UkGMolktUCXZPBD1DvgQEP Mdy9yKhpYy/6N/k8ZQUCfD177GW5mJMNDrQN3e+vdqJ05NBBfiORhJCxilo74FVQ NpX7I4AoYqgc+c0xJpQSZF2bAfAt53Ac8bPG6fNAf1GCw7O8ryjNybHWw9hK1mr3 aS4EEVsC3UJh/d6NAhbPWfB4reL9WqUgGapN8AiVsurt1Rj+eAp6mCY3qM37kPs4 feGBbCL0lfEPVKTWHskcdUjxxcSsj1xTPM/VDvitITjgINfv6EqUHDLPRT9V7ta1 VVbFwIgshScam2T5AolMd1CB8mkaTkkbZFnMqz93lFs43vltJFFqJOCnfPKsYgMz gf4sJ8/029sUJV2yjEHHMQNyurpGPqJ+BHa6bCLX82ERePFNJvBnm8Zm+kizNbD2 CGN38tysXOxKL6jIqT9D0bKO40w1dLJjamsl1SfesDBijZChhF77Lnpwx/EKtj+/ jYSRIijpCWk= =U4Fz -----END PGP SIGNATURE----- Merge tag 'omap-gpmc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC/OMAP GPMC driver cleanup and move from Arnd Bergmann: "The GPMC driver has traditionally been considered a part of the OMAP platform code and tightly interweaved with some of the boards. With this cleanup, it has finally come to the point where it makes sense to move it out of arch/arm into drivers/memory, where we already have other drivers for similar hardware. The cleanups are still ongoing, with the goal of eventually having a standalone driver that does not require an interface to architecture code. This is a separate branch because of dependencies on multiple other branches, and to keep the drivers changes separate from the normal cleanups" * tag 'omap-gpmc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: memory: gpmc: Move omap gpmc code to live under drivers ARM: OMAP2+: Move GPMC initcall to devices.c ARM: OMAP2+: Prepare to move GPMC to drivers by platform data header ARM: OMAP2+: Remove unnecesary include in GPMC driver ARM: OMAP2+: Drop board file for 3430sdp ARM: OMAP2+: Drop board file for ti8168evm ARM: OMAP2+: Drop legacy code for gpmc-smc91x.c ARM: OMAP2+: Require proper GPMC timings for devices ARM: OMAP2+: Show bootloader GPMC timings to allow configuring the .dts file ARM: OMAP2+: Fix support for multiple devices on a GPMC chip select ARM: OMAP2+: gpmc: Sanity check GPMC fck on probe ARM: OMAP2+: gpmc: Keep Chip Select disabled while configuring it ARM: OMAP2+: gpmc: Always enable A26-A11 for non NAND devices ARM: OMAP2+: gpmc: Error out if timings fail in gpmc_probe_generic_child() ARM: OMAP2+: gpmc: Print error message in set_gpmc_timing_reg() |
||
|
Linus Torvalds
|
3a647c1d7a |
ARM: SoC driver updates for 3.19
These are changes for drivers that are intimately tied to some SoC
and for some reason could not get merged through the respective
subsystem maintainer tree.
The largest single change here this time around is the Tegra
iommu/memory controller driver, which gets updated to the new
iommu DT binding. More drivers like this are likely to follow
for the following merge window, but we should be able to do
those through the iommu maintainer.
Other notable changes are:
* reset controller drivers from the reset maintainer (socfpga, sti, berlin)
* fixes for the keystone navigator driver merged last time
* at91 rtc driver changes related to the at91 cleanups
* ARM perf driver changes from Will Deacon
* updates for the brcmstb_gisb driver
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Merge tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver updates from Arnd Bergmann:
"These are changes for drivers that are intimately tied to some SoC and
for some reason could not get merged through the respective subsystem
maintainer tree.
The largest single change here this time around is the Tegra
iommu/memory controller driver, which gets updated to the new iommu DT
binding. More drivers like this are likely to follow for the
following merge window, but we should be able to do those through the
iommu maintainer.
Other notable changes are:
- reset controller drivers from the reset maintainer (socfpga, sti,
berlin)
- fixes for the keystone navigator driver merged last time
- at91 rtc driver changes related to the at91 cleanups
- ARM perf driver changes from Will Deacon
- updates for the brcmstb_gisb driver"
* tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (53 commits)
clocksource: arch_timer: Allow the device tree to specify uninitialized timer registers
clocksource: arch_timer: Fix code to use physical timers when requested
memory: Add NVIDIA Tegra memory controller support
bus: brcmstb_gisb: Add register offset tables for older chips
bus: brcmstb_gisb: Look up register offsets in a table
bus: brcmstb_gisb: Introduce wrapper functions for MMIO accesses
bus: brcmstb_gisb: Make the driver buildable on MIPS
of: Add NVIDIA Tegra memory controller binding
ARM: tegra: Move AHB Kconfig to drivers/amba
amba: Add Kconfig file
clk: tegra: Implement memory-controller clock
serial: samsung: Fix serial config dependencies for exynos7
bus: brcmstb_gisb: resolve section mismatch
ARM: common: edma: edma_pm_resume may be unused
ARM: common: edma: add suspend resume hook
powerpc/iommu: Rename iommu_[un]map_sg functions
rtc: at91sam9: add DT bindings documentation
rtc: at91sam9: use clk API instead of relying on AT91_SLOW_CLOCK
ARM: at91: add clk_lookup entry for RTT devices
rtc: at91sam9: rework the Kconfig description
...
|
||
|
Linus Torvalds
|
6cd94d5e57 |
ARM: SoC platform changes for 3.19
New and updated SoC support, notable changes include:
* bcm: brcmstb SMP support
* bcm: initial iproc/cygnus support
* exynos: Exynos4415 SoC support
* exynos: PMU and suspend support for Exynos5420
* exynos: PMU support for Exynos3250
* exynos: pm related maintenance
* imx: new LS1021A SoC support
* imx: vybrid 610 global timer support
* integrator: convert to using multiplatform configuration
* mediatek: earlyprintk support for mt8127/mt8135
* meson: meson8 soc and l2 cache controller support
* mvebu: Armada 38x CPU hotplug support
* mvebu: drop support for prerelease Armada 375 Z1 stepping
* mvebu: extended suspend support, now works on Armada 370/XP
* omap: hwmod related maintenance
* omap: prcm cleanup
* pxa: initial pxa27x DT handling
* rockchip: SMP support for rk3288
* rockchip: add cpu frequency scaling support
* shmobile: r8a7740 power domain support
* shmobile: various small restart, timer, pci apmu changes
* sunxi: Allwinner A80 (sun9i) earlyprintk support
* ux500: power domain support
Overall, a significant chunk of changes, coming mostly from
the usual suspects: omap, shmobile, samsung and mvebu, all of
which already contain a lot of platform specific code in
arch/arm.
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Merge tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC platform changes from Arnd Bergmann:
"New and updated SoC support, notable changes include:
- bcm:
brcmstb SMP support
initial iproc/cygnus support
- exynos:
Exynos4415 SoC support
PMU and suspend support for Exynos5420
PMU support for Exynos3250
pm related maintenance
- imx:
new LS1021A SoC support
vybrid 610 global timer support
- integrator:
convert to using multiplatform configuration
- mediatek:
earlyprintk support for mt8127/mt8135
- meson:
meson8 soc and l2 cache controller support
- mvebu:
Armada 38x CPU hotplug support
drop support for prerelease Armada 375 Z1 stepping
extended suspend support, now works on Armada 370/XP
- omap:
hwmod related maintenance
prcm cleanup
- pxa:
initial pxa27x DT handling
- rockchip:
SMP support for rk3288
add cpu frequency scaling support
- shmobile:
r8a7740 power domain support
various small restart, timer, pci apmu changes
- sunxi:
Allwinner A80 (sun9i) earlyprintk support
- ux500:
power domain support
Overall, a significant chunk of changes, coming mostly from the usual
suspects: omap, shmobile, samsung and mvebu, all of which already
contain a lot of platform specific code in arch/arm"
* tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (187 commits)
ARM: mvebu: use the cpufreq-dt platform_data for independent clocks
soc: integrator: Add terminating entry for integrator_cm_match
ARM: mvebu: add SDRAM controller description for Armada XP
ARM: mvebu: adjust mbus controller description on Armada 370/XP
ARM: mvebu: add suspend/resume DT information for Armada XP GP
ARM: mvebu: synchronize secondary CPU clocks on resume
ARM: mvebu: make sure MMU is disabled in armada_370_xp_cpu_resume
ARM: mvebu: Armada XP GP specific suspend/resume code
ARM: mvebu: reserve the first 10 KB of each memory bank for suspend/resume
ARM: mvebu: implement suspend/resume support for Armada XP
clk: mvebu: add suspend/resume for gatable clocks
bus: mvebu-mbus: provide a mechanism to save SDRAM window configuration
bus: mvebu-mbus: suspend/resume support
clocksource: time-armada-370-xp: add suspend/resume support
irqchip: armada-370-xp: Add suspend/resume support
ARM: add lolevel debug support for asm9260
ARM: add mach-asm9260
ARM: EXYNOS: use u8 for val[] in struct exynos_pmu_conf
power: reset: imx-snvs-poweroff: add power off driver for i.mx6
ARM: imx: temporarily remove CONFIG_SOC_FSL from LS1021A
...
|
||
|
Linus Torvalds
|
6c9e92476b |
ARM: SoC cleanups for 3.19
The remaining cleanups for 3.19 are to a large part result of
devicetree conversion nearing completion on two other platforms
besides AT91:
* Like AT91, Renesas shmobile is in the process to migrate to DT and
multiplatform, but using a different approach of doing it one
SoC at a time. For 3.19, the r8a7791 platform and associated\
"Koelsch" board are considered complete and we remove the non-DT
non-multiplatform support for this.
* The ARM Versatile Express has supported DT and multiplatform
for a long time, but we have still kept the legacy board files
around, because not all drivers were fully working before. We
have finally taken the last step to remove the board files.
Other changes in this branch are preparation for the later branches
or just unrelated to the more interesting changes:
* The dts files for arm64 get moved into per-vendor directories for
a clearer structure.
* Some dead code removal (zynq, exynos, davinci, imx)
* Using pr_*() macros more consistently instead of printk(KERN_*)
in some platform code.
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Merge tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanups from Arnd Bergmann:
"The remaining cleanups for 3.19 are to a large part result of
devicetree conversion nearing completion on two other platforms
besides AT91:
- Like AT91, Renesas shmobile is in the process to migrate to DT and
multiplatform, but using a different approach of doing it one SoC
at a time. For 3.19, the r8a7791 platform and associated "Koelsch"
board are considered complete and we remove the non-DT
non-multiplatform support for this.
- The ARM Versatile Express has supported DT and multiplatform for a
long time, but we have still kept the legacy board files around,
because not all drivers were fully working before. We have finally
taken the last step to remove the board files.
Other changes in this branch are preparation for the later branches or
just unrelated to the more interesting changes:
- The dts files for arm64 get moved into per-vendor directories for a
clearer structure.
- Some dead code removal (zynq, exynos, davinci, imx)
- Using pr_*() macros more consistently instead of printk(KERN_*) in
some platform code"
* tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (71 commits)
ARM: zynq: Remove secondary_startup() declaration from header
ARM: vexpress: Enable regulator framework when MMCI is in use
ARM: vexpress: Remove non-DT code
ARM: imx: Remove unneeded .map_io initialization
ARM: dts: imx6qdl-sabresd: Fix the microphone route
ARM: imx: refactor mxc_iomux_mode()
ARM: imx: simplify clk_pllv3_prepare()
ARM: imx6q: drop unnecessary semicolon
ARM: imx: clean up machine mxc_arch_reset_init_dt reset init
ARM: dts: imx6qdl-rex: Remove unneeded 'fsl,mode' property
ARM: dts: imx6qdl-gw5x: Remove unneeded 'fsl,mode' property
ARM: dts: imx6qdl-sabresd: Use IMX6QDL_CLK_CKO define
ARM: at91: remove useless init_time for DT-only SoCs
ARM: davinci: Remove redundant casts
ARM: davinci: Use standard logging styles
ARM: shmobile: r8a7779: Spelling/grammar s/entity/identity/, s/map/mapping/
ARM: shmobile: sh7372: Spelling/grammar s/entity map/identity mapping/
ARM: shmobile: sh73a0: Spelling/grammar s/entity map/identity mapping/
ARM: EXYNOS: Remove unused static iomapping
ARM: at91: fix build breakage due to legacy board removals
...
|
||
|
Linus Torvalds
|
0a9e0acddb |
ARM: SoC non-critical bug fixes for 3.19
These are bug fixes for harmless problems that were not important
enough to get fixed in 3.19. This contains updates to the MAINTAINERS
file, in particular:
- Ben Dooks stepped down as Samsung co-maintainer (thanks Ben for
long years of maintaining this). Kukjin Kim, who has been
doing the work de-facto by himself recently is now the
only maintainer.
- Liviu, Sudeep and Lorenzo from ARM now officially maintain the
Versatile Express platform, which was orphaned (thanks for
- Gregory Fong and Florian Fainelli help out on the Broadcom BCM7XXX
platform
- Ray Jui and Scott Branden are the future maintainers for the
newly merged Broadcom Cygnus platform. Welcome!
In terms of actual fixes, we have the usual set of OMAP bug fixes,
which Tony Lindgren separates out well from the other OMAP changes,
one really ep93xx regression fix against 3.11 that didn't make it for
3.18, a few GIC changes from Marc Zyngier as a preparation for
later rework (the current code is wrong in a harmless way), on
Tegra regression and one samsung spelling fix.
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Merge tag 'fixes-nc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC non-critical bug fixes from Arnd Bergmann:
"These are bug fixes for harmless problems that were not important
enough to get fixed in 3.19. This contains updates to the MAINTAINERS
file, in particular:
- Ben Dooks stepped down as Samsung co-maintainer (thanks Ben for
long years of maintaining this). Kukjin Kim, who has been doing
the work de-facto by himself recently is now the only maintainer.
- Liviu, Sudeep and Lorenzo from ARM now officially maintain the
Versatile Express platform, which was orphaned (thanks for
- Gregory Fong and Florian Fainelli help out on the Broadcom BCM7XXX
platform
- Ray Jui and Scott Branden are the future maintainers for the newly
merged Broadcom Cygnus platform. Welcome!
In terms of actual fixes, we have the usual set of OMAP bug fixes,
which Tony Lindgren separates out well from the other OMAP changes,
one really ep93xx regression fix against 3.11 that didn't make it for
3.18, a few GIC changes from Marc Zyngier as a preparation for later
rework (the current code is wrong in a harmless way), on Tegra
regression and one samsung spelling fix"
* tag 'fixes-nc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: imx6: fix bogus use of irq_get_irq_data
ARM: imx: irq: fix buggy usage of irq_data irq field
MAINTAINERS: ARM Versatile Express platform, add missing pattern
MAINTAINERS: ARM Versatile Express platform
arm: ep93xx: add dma_masks for the M2P and M2M DMA controllers
MAINTAINERS: Add ahci_st.c to ARCH/STI architecture
MAINTAINERS: add entry for the GISB arbiter driver
MAINTAINERS: update brcmstb entries
MAINTAINERS: update email address and cleanup for exynos entry
ARM: tegra: Re-add removed SoC id macro to tegra_resume()
MAINTAINERS: Entry for Cygnus/iproc arm architecture
ARM: OMAP: serial: remove last vestige of DTR_gpio support.
ARM: OMAP2+: gpmc: Get rid of "ti,elm-id not found" warning
ARM: EXYNOS: fix typo in static struct name "exynos5_list_diable_wfi_wfe"
ARM: OMAP2: Remove unnecessary KERN_* in omap_phy_internal.c
ARM: OMAP4+: Remove unused omap_l3_noc platform init
ARM: dts: Add twl keypad map for omap3 EVM
ARM: dts: Add twl keypad map for LDP
ARM: dts: Fix NAND last partition size on LDP
ARM: OMAP3: Fix errors for omap_l3_smx when booted with device tree
|
||
|
Linus Torvalds
|
b64bb1d758 |
arm64 updates for 3.19
Changes include: - Support for alternative instruction patching from Andre - seccomp from Akashi - Some AArch32 instruction emulation, required by the Android folks - Optimisations for exception entry/exit code, cmpxchg, pcpu atomics - mmu_gather range calculations moved into core code - EFI updates from Ard, including long-awaited SMBIOS support - /proc/cpuinfo fixes to align with the format used by arch/arm/ - A few non-critical fixes across the architecture -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABCgAGBQJUhbSAAAoJELescNyEwWM07PQH/AolxqOJTTg8TKe2wvRC+DwY R98bcECMwhXvwep1KhTBew7z7NRzXJvVVs+EePSpXWX2+KK2aWN4L50rAb9ow4ty PZ5EFw564g3rUpc7cbqIrM/lasiYWuIWw/BL+wccOm3mWbZfokBB2t0tn/2rVv0K 5tf2VCLLxgiFJPLuYk61uH7Nshvv5uJ6ODwdXjbrH+Mfl6xsaiKv17ZrfP4D/M4o hrLoXxVTuuWj3sy/lBJv8vbTbKbQ6BGl9JQhBZGZHeKOdvX7UnbKH4N5vWLUFZya QYO92AK1xGolu8a9bEfzrmxn0zXeAHgFTnRwtDCekOvy0kTR9MRIqXASXKO3ZEU= =rnFX -----END PGP SIGNATURE----- Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 updates from Will Deacon: "Here's the usual mixed bag of arm64 updates, also including some related EFI changes (Acked by Matt) and the MMU gather range cleanup (Acked by you). Changes include: - support for alternative instruction patching from Andre - seccomp from Akashi - some AArch32 instruction emulation, required by the Android folks - optimisations for exception entry/exit code, cmpxchg, pcpu atomics - mmu_gather range calculations moved into core code - EFI updates from Ard, including long-awaited SMBIOS support - /proc/cpuinfo fixes to align with the format used by arch/arm/ - a few non-critical fixes across the architecture" * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (70 commits) arm64: remove the unnecessary arm64_swiotlb_init() arm64: add module support for alternatives fixups arm64: perf: Prevent wraparound during overflow arm64/include/asm: Fixed a warning about 'struct pt_regs' arm64: Provide a namespace to NCAPS arm64: bpf: lift restriction on last instruction arm64: Implement support for read-mostly sections arm64: compat: align cacheflush syscall with arch/arm arm64: add seccomp support arm64: add SIGSYS siginfo for compat task arm64: add seccomp syscall for compat task asm-generic: add generic seccomp.h for secure computing mode 1 arm64: ptrace: allow tracer to skip a system call arm64: ptrace: add NT_ARM_SYSTEM_CALL regset arm64: Move some head.text functions to executable section arm64: jump labels: NOP out NOP -> NOP replacement arm64: add support to dump the kernel page tables arm64: Add FIX_HOLE to permanent fixed addresses arm64: alternatives: fix pr_fmt string for consistency arm64: vmlinux.lds.S: don't discard .exit.* sections at link-time ... |
||
|
Linus Torvalds
|
f3f62a38ce |
SCSI for-linus on 20141208
This patch is the usual mix of driver updates (srp, ipr, scsi_debug, NCR5380, fnic, 53c974, ses, wd719x, hpsa, megaraid_sas). Of those, wd7a9x is new and 53c974 is a rewrite of the old tmscsim driver and the extensive work by Finn Thain rewrites all the NCR5380 based drivers. There's also extensive infrastructure updates: a new logging infrastructure for sense information and a rewrite of the tagged command queue API and an assortment of minor updates. Signed-off-by: James Bottomley <JBottomley@Parallels.com> -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAABAgAGBQJUhgazAAoJEDeqqVYsXL0MxIYH/2wCs9sne5cfDTjfufLJDdu1 WLoJgNMxv+14OukknJfG2Kk1WlHgLRM5+TVWIGiG0mmjXuFyShzIqEOHKTDWqxnE tBH4wLi/+XYqZAmAeim4/2zhvf+cUVVlIu01VERR5uwaBWYM8BeLSwjdnAAvEEwb iV74p1WV6frXo4guADplgtkjD0YxI4MTUZ1figRMlLO6WLFFyQ+95UfY8jFs+eQv zk63y7Mm7dQNd57/Wl3i89lw0kqlaJSZNl8Ovj1axy4rDYzT1wXhY8mEwD8fI8Ym wahldjFE5vXgj0NpO3tB3Z+UDP2YmQduMyzTxkPNnrEPKiOCsnQo42XR6vb92cQ= =Y+DU -----END PGP SIGNATURE----- Merge tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI updates from James Bottomley: "This patch is the usual mix of driver updates (srp, ipr, scsi_debug, NCR5380, fnic, 53c974, ses, wd719x, hpsa, megaraid_sas). Of those, wd7a9x is new and 53c974 is a rewrite of the old tmscsim driver and the extensive work by Finn Thain rewrites all the NCR5380 based drivers. There's also extensive infrastructure updates: a new logging infrastructure for sense information and a rewrite of the tagged command queue API and an assortment of minor updates" * tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (183 commits) scsi: set fmt to NULL scsi_extd_sense_format() by default libsas: remove task_collector mode wd719x: remove dma_cache_sync call scsi_debug: add Report supported opcodes+tmfs; Compare and write scsi_debug: change SCSI command parser to table driven scsi_debug: add Capacity Changed Unit Attention scsi_debug: append inject error flags onto scsi_cmnd object scsi_debug: pinpoint invalid field in sense data wd719x: Add firmware documentation wd719x: Introduce Western Digital WD7193/7197/7296 PCI SCSI card driver eeprom-93cx6: Add (read-only) support for 8-bit mode esas2r: fix an oversight in setting return value esas2r: fix an error path in esas2r_ioctl_handler esas2r: fir error handling in do_fm_api scsi: add SPC-3 command definitions scsi: rename SERVICE_ACTION_IN to SERVICE_ACTION_IN_16 scsi: remove scsi_driver owner field scsi: move scsi_dispatch_cmd to scsi_lib.c scsi: stop passing a gfp_mask argument down the command setup path scsi: remove scsi_next_command ... |
||
|
Linus Torvalds
|
140dfc9299 |
- Significant DM thin-provisioning performance improvements to meet
performance requirements that were requested by the Gluster distributed filesystem. Specifically, dm-thinp now takes care to aggregate IO that will be issued to the same thinp block before issuing IO to the underlying devices. This really helps improve performance on HW RAID6 devices that have a writeback cache because it avoids RMW in the HW RAID controller. - Some stable fixes: fix leak in DM bufio if integrity profiles were enabled, use memzero_explicit in DM crypt to avoid any potential for information leak, and a DM cache fix to properly mark a cache block dirty if it was promoted to the cache via the overwrite optimization. - A few simple DM persistent data library fixes - DM cache multiqueue policy block promotion improvements. - DM cache discard improvements that take advantage of range (multiblock) discard support in the DM bio-prison. This allows for much more efficient bulk discard processing (e.g. when mkfs.xfs discards the entire device). - Some small optimizations in DM core and RCU deference cleanups - DM core changes to suspend/resume code to introduce the new internal suspend/resume interface that the DM thin-pool target now uses to suspend/resume active thin devices when the thin-pool must suspend/resume. This avoids forcing userspace to track all active thin volumes in a thin-pool when the thin-pool is suspended for the purposes of metadata or data space resize. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJUhcvVAAoJEMUj8QotnQNaB78H+wSA6sDJGOhc6e1KlWoFh4Hx hTmwm/O8Fxrp9StO3NPlcv9l+l9FX9pGzN/lo3OsxgWMTs/vLTKZ5SAe3/YT3/b9 6SFC7pC70+glakgMhhXWRvoeSEQC1OWb5BuvOF8irl2n+7B9NAn/zHd9pgpmyWHp nBXK2GJBMzVSiI47NMjo2n6007LgQq0xxSJ9luwdrpwjDqD1d406DrhzbHou5H2Y b8XJGQzUy0GZCX8ycwPVXo9svp2Bc+XajVcgOj5Qg7s2uV5car8NN7TxhSOKSXn2 VpiSyEa2MLHAbFuWtGs8XO98z/m5JlGf1eIgRO4s7w59URgpzdxOHXLlAoyqIGw= =opXi -----END PGP SIGNATURE----- Merge tag 'dm-3.19-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper updates from Mike Snitzer: - Significant DM thin-provisioning performance improvements to meet performance requirements that were requested by the Gluster distributed filesystem. Specifically, dm-thinp now takes care to aggregate IO that will be issued to the same thinp block before issuing IO to the underlying devices. This really helps improve performance on HW RAID6 devices that have a writeback cache because it avoids RMW in the HW RAID controller. - Some stable fixes: fix leak in DM bufio if integrity profiles were enabled, use memzero_explicit in DM crypt to avoid any potential for information leak, and a DM cache fix to properly mark a cache block dirty if it was promoted to the cache via the overwrite optimization. - A few simple DM persistent data library fixes - DM cache multiqueue policy block promotion improvements. - DM cache discard improvements that take advantage of range (multiblock) discard support in the DM bio-prison. This allows for much more efficient bulk discard processing (e.g. when mkfs.xfs discards the entire device). - Some small optimizations in DM core and RCU deference cleanups - DM core changes to suspend/resume code to introduce the new internal suspend/resume interface that the DM thin-pool target now uses to suspend/resume active thin devices when the thin-pool must suspend/resume. This avoids forcing userspace to track all active thin volumes in a thin-pool when the thin-pool is suspended for the purposes of metadata or data space resize. * tag 'dm-3.19-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (49 commits) dm crypt: use memzero_explicit for on-stack buffer dm space map metadata: fix sm_bootstrap_get_count() dm space map metadata: fix sm_bootstrap_get_nr_blocks() dm bufio: fix memleak when using a dm_buffer's inline bio dm cache: fix spurious cell_defer when dealing with partial block at end of device dm cache: dirty flag was mistakenly being cleared when promoting via overwrite dm cache: only use overwrite optimisation for promotion when in writeback mode dm cache: discard block size must be a multiple of cache block size dm cache: fix a harmless race when working out if a block is discarded dm cache: when reloading a discard bitset allow for a different discard block size dm cache: fix some issues with the new discard range support dm array: if resizing the array is a noop set the new root to the old one dm: use rcu_dereference_protected instead of rcu_dereference dm thin: fix pool_io_hints to avoid looking at max_hw_sectors dm thin: suspend/resume active thin devices when reloading thin-pool dm: enhance internal suspend and resume interface dm thin: do not allow thin device activation while pool is suspended dm: add presuspend_undo hook to target_type dm: return earlier from dm_blk_ioctl if target doesn't implement .ioctl dm thin: remove stale 'trim' message in block comment above pool_message ... |
||
|
Linus Torvalds
|
f94784bdb1 |
regulator: Updates for v3.19
The main thing this time around is support for suspend mode
configuration from DT which will enable some very useful power savings
on systems where we can't rely on the bootloader configuration. We
still don't really support dynamic configuration of this at runtime,
that may come later if there is any demand.
- Support for specifying the target regulation mode and voltage during
system suspend via DT, enabling power savings in that mode.
- Reduce the default verbosity of the logging on boot, improving boot
times especially for systems with very large numbers of regulators.
- Lots of cleanups and fixes for Maxim PMIC drivers.
- New driver for Richtek RT5033.
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Merge tag 'regulator-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator updates from Mark Brown:
"The main thing this time around is support for suspend mode
configuration from DT which will enable some very useful power savings
on systems where we can't rely on the bootloader configuration. We
still don't really support dynamic configuration of this at runtime,
that may come later if there is any demand.
Summary:
- Support for specifying the target regulation mode and voltage
during system suspend via DT, enabling power savings in that mode.
- Reduce the default verbosity of the logging on boot, improving boot
times especially for systems with very large numbers of regulators.
- Lots of cleanups and fixes for Maxim PMIC drivers.
- New driver for Richtek RT5033"
* tag 'regulator-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (62 commits)
regulator: core: Fix regualtor_ena_gpio_free not to access pin after freeing
regulator: sky81452: Modify Device Tree structure
regulator: sky81452: Modify Device Tree structure
dt-bindings: Update documentation for "system-power-controller" and fix misspellings
of: Rename "poweroff-source" property to "system-power-controller"
regulator: max77686: Remove support for board files
regulator: max77802: Remove support for board files
regulator: max77802: Fill regulator modes translation callback
regulator: max77802: Document binding for regulator operating modes
regulator: of: Add support for parsing initial and suspend modes
regulator: of: Pass the regulator description in the match table
regulator: of: Add regulator desc param to of_get_regulator_init_data()
regulator: Add mode mapping function to struct regulator_desc
regulator: Document binding for initial and suspend modes
regulator: core: Add PRE_DISABLE notification
regulator: gpio: fix parsing of gpio list
regulator: rpm: add support for RPM-controller SMB208
regulator: da9063: Do not transform local IRQ to virtual
regulator: sky81452: Modify dependent Kconfig symbol
regulator: rt5033: Add RT5033 Regulator device driver
...
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Linus Torvalds
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de74038644 |
regmap: Updates for v3.19
A couple of new features this time around, nothing that should have any
impact on most users:
- Cleanups and optimization of the path for reading back the register
defaults from the hardware at startup, reducing boot times for
devices that use this (most don't, either populating on demand or
providing defaults).
- A bus implementation for AC'97 devices.
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Merge tag 'regmap-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap updates from Mark Brown:
"A couple of new features this time around, nothing that should have
any impact on most users:
- Cleanups and optimization of the path for reading back the register
defaults from the hardware at startup, reducing boot times for
devices that use this (most don't, either populating on demand or
providing defaults).
- A bus implementation for AC'97 devices"
* tag 'regmap-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: ac97: Add generic AC'97 callbacks
regmap: cache: Sort include headers alphabetically
regmap: cache: Fix possible ZERO_SIZE_PTR pointer dereferencing error.
regmap: cache: use kmalloc_array instead of kmalloc
regmap: cache: speed regcache_hw_init() up.
regmap: cache: fix errno in regcache_hw_init()
regmap: cache: cleanup regcache_hw_init()
regmap: cache: fix errno in regcache_hw_init()
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