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37924 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
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ce6513f758 |
Mainly boring here, too. rmmod --wait finally removed, though.
Cheers, Rusty. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) iQIcBAABAgAGBQJSe3ngAAoJENkgDmzRrbjxqkMP/jFwTIVy+tZbPL36xR4C7UI/ JZ9JU2c2HTyAtqp/T/bljA0QUDQWUASCfwG5WmRgyvMkEwhfuGrQ3dveQLRq5iKD Ln/LIN8JXXijhRr+ywhXLAcp1P5ysSJJYYS5lZTCmJ2Cv9jnAvmUl0KqdTEx+ZNH YsWBiI9+WmwhODiAdUlqtThDK37w8OsWeMq2agf97bBERlRYnRZvzwy3tSP2mf5j 4wx8viOdzPC7NVblyX1cj3gonFFQJtMI4s/e787QzkUpNQjvrN3XecPiQX6aBCX3 seVjuv6panv1tw1HqyU1KXWo7fs2uCc9mVR5Rr3Zok+8qpKWkj0dyCnF3A+ufsrO vlkrFLUsv/U1NUkWJM6mJKzMjKRD4iF702QsEEpNA5rlOsAMMGSSlju4eu6GvadI ZJ+ZDaNWUDPbWa9Xgjyp+DKWR6vybNgEHZmLmcCdeLt1u8Th1E/ujsKxv4SN6eIO 2v+lNPjGEivoNXUX52toRZ1324U3FFzburCSA0c55+r1sjPT6SXCfl8kISSKvVtt iFemsDxhaSwqVzqbsx3ztU010Z0f9uVbpZHAQgZ514Uk25HtwhkaQSdiIP+cPXE8 rClzj9m4gD+Jy0T+P0HjPlSxKCGSlgLiEBWEigX36/F4Isv+GL1HjvrGGCWM4VnO lIyw5ux/UH8USct9nH4x =xg2p -----END PGP SIGNATURE----- Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux Pull module updates from Rusty Russell: "Mainly boring here, too. rmmod --wait finally removed, though" * tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: modpost: fix bogus 'exported twice' warnings. init: fix in-place parameter modification regression asmlinkage, module: Make ksymtab and kcrctab symbols and __this_module __visible kernel: add support for init_array constructors modpost: Optionally ignore secondary errors seen if a single module build fails module: remove rmmod --wait option. |
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Alexander Beregalov
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8d3ef556ab |
cmdline-parser: fix build
Fix following errors: include/linux/cmdline-parser.h:17:12: error: 'BDEVNAME_SIZE' undeclared here block/cmdline-parser.c:17:2: error: implicit declaration of function 'kzalloc' Signed-off-by: Alexander Beregalov <alexander.beregalov@intel.com> Cc: CaiZhiyong <caizhiyong@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Stefani Seibold
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498d319bb5 |
kfifo API type safety
This patch enhances the type safety for the kfifo API. It is now safe to put const data into a non const FIFO and the API will now generate a compiler warning when reading from the fifo where the destination address is pointing to a const variable. As a side effect the kfifo_put() does now expect the value of an element instead a pointer to the element. This was suggested Russell King. It make the handling of the kfifo_put easier since there is no need to create a helper variable for getting the address of a pointer or to pass integers of different sizes. IMHO the API break is okay, since there are currently only six users of kfifo_put(). The code is also cleaner by kicking out the "if (0)" expressions. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Stefani Seibold <stefani@seibold.net> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Christoph Hellwig
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b89241e8cd |
llists: move llist_reverse_order from raid5 to llist.c
Make this useful helper available for other users. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Jens Axboe <axboe@kernel.dk> Cc: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Andrew Morton
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7cf64f861b |
kernel-provide-a-__smp_call_function_single-stub-for-config_smp-fix
x86_64 allnoconfig: kernel/up.c:25: error: redefinition of '__smp_call_function_single' include/linux/smp.h:154: note: previous definition of '__smp_call_function_single' was here Cc: Christoph Hellwig <hch@infradead.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Jan Kara <jack@suse.cz> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Christoph Hellwig
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0a06ff068f |
kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS
We've switched over every architecture that supports SMP to it, so remove the new useless config variable. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Jan Kara <jack@suse.cz> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Christoph Hellwig
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fc21c0cff2 |
revert "softirq: Add support for triggering softirq work on softirqs"
This commit was incomplete in that code to remove items from the per-cpu lists was missing and never acquired a user in the 5 years it has been in the tree. We're going to implement what it seems to try to archive in a simpler way, and this code is in the way of doing so. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Jan Kara <jack@suse.cz> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Wolfram Sang
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62026aedaa |
sched: remove INIT_COMPLETION
All users are converted over to reinit_completion(). Remove the old macro now. Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Wolfram Sang
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c32f74ab28 |
sched: replace INIT_COMPLETION with reinit_completion
For the casual device driver writer, it is hard to remember when to use init_completion (to init a completion structure) or INIT_COMPLETION (to *reinit* a completion structure). Furthermore, while all other completion functions exepct a pointer as a parameter, INIT_COMPLETION does not. To make it easier to remember which function to use and to make code more readable, introduce a new inline function with the proper name and consistent argument type. Update the kernel-doc for init_completion while we are here. Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Linus Walleij <linus.walleij@linaro.org> (personally at LCE13) Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Tetsuo Handa
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839cc2a94c |
seq_file: introduce seq_setwidth() and seq_pad()
There are several users who want to know bytes written by seq_*() for alignment purpose. Currently they are using %n format for knowing it because seq_*() returns 0 on success. This patch introduces seq_setwidth() and seq_pad() for allowing them to align without using %n format. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Joe Perches <joe@perches.com> Cc: David Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Peter Zijlstra
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57f4257eae |
lockref: use BLOATED_SPINLOCKS to avoid explicit config dependencies
Avoid the fragile Kconfig construct guestimating spinlock_t sizes; use a friendly compile-time test to determine this. [kirill.shutemov@linux.intel.com: drop CONFIG_CMPXCHG_LOCKREF] Signed-off-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Kirill A. Shutemov
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ea1e7ed337 |
mm: create a separate slab for page->ptl allocation
If DEBUG_SPINLOCK and DEBUG_LOCK_ALLOC are enabled spinlock_t on x86_64 is 72 bytes. For page->ptl they will be allocated from kmalloc-96 slab, so we loose 24 on each. An average system can easily allocate few tens thousands of page->ptl and overhead is significant. Let's create a separate slab for page->ptl allocation to solve this. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Peter Zijlstra
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539edb5846 |
mm: properly separate the bloated ptl from the regular case
Use kernel/bounds.c to convert build-time spinlock_t size check into a preprocessor symbol and apply that to properly separate the page::ptl situation. Signed-off-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Kirill A. Shutemov
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49076ec2cc |
mm: dynamically allocate page->ptl if it cannot be embedded to struct page
If split page table lock is in use, we embed the lock into struct page of table's page. We have to disable split lock, if spinlock_t is too big be to be embedded, like when DEBUG_SPINLOCK or DEBUG_LOCK_ALLOC enabled. This patch add support for dynamic allocation of split page table lock if we can't embed it to struct page. page->ptl is unsigned long now and we use it as spinlock_t if sizeof(spinlock_t) <= sizeof(long), otherwise it's pointer to spinlock_t. The spinlock_t allocated in pgtable_page_ctor() for PTE table and in pgtable_pmd_page_ctor() for PMD table. All other helpers converted to support dynamically allocated page->ptl. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Reviewed-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Kirill A. Shutemov
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390f44e2aa |
mm: allow pgtable_page_ctor() to fail
Change pgtable_page_ctor() return type from void to bool. Returns true, if initialization is successful and false otherwise. Current implementation never fails, but it will change later. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Kirill A. Shutemov
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e009bb30c8 |
mm: implement split page table lock for PMD level
The basic idea is the same as with PTE level: the lock is embedded into struct page of table's page. We can't use mm->pmd_huge_pte to store pgtables for THP, since we don't take mm->page_table_lock anymore. Let's reuse page->lru of table's page for that. pgtable_pmd_page_ctor() returns true, if initialization is successful and false otherwise. Current implementation never fails, but assumption that constructor can fail will help to port it to -rt where spinlock_t is rather huge and cannot be embedded into struct page -- dynamic allocation is required. Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Tested-by: Alex Thorlton <athorlton@sgi.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: "Eric W . Biederman" <ebiederm@xmission.com> Cc: "Paul E . McKenney" <paulmck@linux.vnet.ibm.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Dave Jones <davej@redhat.com> Cc: David Howells <dhowells@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Kees Cook <keescook@chromium.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Robin Holt <robinmholt@gmail.com> Cc: Sedat Dilek <sedat.dilek@gmail.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Hugh Dickins <hughd@google.com> Reviewed-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Kirill A. Shutemov
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cb900f4121 |
mm, hugetlb: convert hugetlbfs to use split pmd lock
Hugetlb supports multiple page sizes. We use split lock only for PMD level, but not for PUD. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Tested-by: Alex Thorlton <athorlton@sgi.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: "Eric W . Biederman" <ebiederm@xmission.com> Cc: "Paul E . McKenney" <paulmck@linux.vnet.ibm.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Dave Jones <davej@redhat.com> Cc: David Howells <dhowells@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Kees Cook <keescook@chromium.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Robin Holt <robinmholt@gmail.com> Cc: Sedat Dilek <sedat.dilek@gmail.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Kirill A. Shutemov
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c389a250ab |
mm, thp: do not access mm->pmd_huge_pte directly
Currently mm->pmd_huge_pte protected by page table lock. It will not work with split lock. We have to have per-pmd pmd_huge_pte for proper access serialization. For now, let's just introduce wrapper to access mm->pmd_huge_pte. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Tested-by: Alex Thorlton <athorlton@sgi.com> Cc: Alex Thorlton <athorlton@sgi.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: "Eric W . Biederman" <ebiederm@xmission.com> Cc: "Paul E . McKenney" <paulmck@linux.vnet.ibm.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Dave Jones <davej@redhat.com> Cc: David Howells <dhowells@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Kees Cook <keescook@chromium.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Robin Holt <robinmholt@gmail.com> Cc: Sedat Dilek <sedat.dilek@gmail.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Kirill A. Shutemov
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117b0791ac |
mm, thp: move ptl taking inside page_check_address_pmd()
With split page table lock we can't know which lock we need to take before we find the relevant pmd. Let's move lock taking inside the function. Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Tested-by: Alex Thorlton <athorlton@sgi.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: "Eric W . Biederman" <ebiederm@xmission.com> Cc: "Paul E . McKenney" <paulmck@linux.vnet.ibm.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Dave Jones <davej@redhat.com> Cc: David Howells <dhowells@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Kees Cook <keescook@chromium.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Robin Holt <robinmholt@gmail.com> Cc: Sedat Dilek <sedat.dilek@gmail.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Kirill A. Shutemov
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bf929152e9 |
mm, thp: change pmd_trans_huge_lock() to return taken lock
With split ptlock it's important to know which lock pmd_trans_huge_lock() took. This patch adds one more parameter to the function to return the lock. In most places migration to new api is trivial. Exception is move_huge_pmd(): we need to take two locks if pmd tables are different. Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Tested-by: Alex Thorlton <athorlton@sgi.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: "Eric W . Biederman" <ebiederm@xmission.com> Cc: "Paul E . McKenney" <paulmck@linux.vnet.ibm.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Dave Jones <davej@redhat.com> Cc: David Howells <dhowells@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Kees Cook <keescook@chromium.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Robin Holt <robinmholt@gmail.com> Cc: Sedat Dilek <sedat.dilek@gmail.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Kirill A. Shutemov
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9a86cb7bdc |
mm: introduce api for split page table lock for PMD level
Basic api, backed by mm->page_table_lock for now. Actual implementation will be added later. Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Tested-by: Alex Thorlton <athorlton@sgi.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: "Eric W . Biederman" <ebiederm@xmission.com> Cc: "Paul E . McKenney" <paulmck@linux.vnet.ibm.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Dave Jones <davej@redhat.com> Cc: David Howells <dhowells@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Kees Cook <keescook@chromium.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Robin Holt <robinmholt@gmail.com> Cc: Sedat Dilek <sedat.dilek@gmail.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Kirill A. Shutemov
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e1f56c89b0 |
mm: convert mm->nr_ptes to atomic_long_t
With split page table lock for PMD level we can't hold mm->page_table_lock while updating nr_ptes. Let's convert it to atomic_long_t to avoid races. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Tested-by: Alex Thorlton <athorlton@sgi.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: "Eric W . Biederman" <ebiederm@xmission.com> Cc: "Paul E . McKenney" <paulmck@linux.vnet.ibm.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Dave Jones <davej@redhat.com> Cc: David Howells <dhowells@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Kees Cook <keescook@chromium.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Robin Holt <robinmholt@gmail.com> Cc: Sedat Dilek <sedat.dilek@gmail.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Kirill A. Shutemov
|
57c1ffcefb |
mm: rename USE_SPLIT_PTLOCKS to USE_SPLIT_PTE_PTLOCKS
We're going to introduce split page table lock for PMD level. Let's rename existing split ptlock for PTE level to avoid confusion. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Tested-by: Alex Thorlton <athorlton@sgi.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: "Eric W . Biederman" <ebiederm@xmission.com> Cc: "Paul E . McKenney" <paulmck@linux.vnet.ibm.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Dave Jones <davej@redhat.com> Cc: David Howells <dhowells@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Kees Cook <keescook@chromium.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Robin Holt <robinmholt@gmail.com> Cc: Sedat Dilek <sedat.dilek@gmail.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Jarkko Nikula
|
45c42a7f58 |
ACPI: Provide acpi_dev_name accessor for struct acpi_device device name
struct acpi_device fields are only available when CONFIG_ACPI is set. We may find use for dev_name(&adev->dev) in generic code that is build also without CONFIG_ACPI is set but currently this requires #ifdef CONFIG_ACPI churn. Provide here an accessor that returns dev_name of embedded struct device dev in struct acpi_device or NULL depending on CONFIG_ACPI setting. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Rafael J. Wysocki
|
3a83f99249 |
ACPI: Eliminate the DEVICE_ACPI_HANDLE() macro
Since DEVICE_ACPI_HANDLE() is now literally identical to ACPI_HANDLE(), replace it with the latter everywhere and drop its definition from include/acpi.h. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Rafael J. Wysocki
|
7b1998116b |
ACPI / driver core: Store an ACPI device pointer in struct acpi_dev_node
Modify struct acpi_dev_node to contain a pointer to struct acpi_device associated with the given device object (that is, its ACPI companion device) instead of an ACPI handle corresponding to it. Introduce two new macros for manipulating that pointer in a CONFIG_ACPI-safe way, ACPI_COMPANION() and ACPI_COMPANION_SET(), and rework the ACPI_HANDLE() macro to take the above changes into account. Drop the ACPI_HANDLE_SET() macro entirely and rework its users to use ACPI_COMPANION_SET() instead. For some of them who used to pass the result of acpi_get_child() directly to ACPI_HANDLE_SET() introduce a helper routine acpi_preset_companion() doing an equivalent thing. The main motivation for doing this is that there are things represented by struct acpi_device objects that don't have valid ACPI handles (so called fixed ACPI hardware features, such as power and sleep buttons) and we would like to create platform device objects for them and "glue" them to their ACPI companions in the usual way (which currently is impossible due to the lack of valid ACPI handles). However, there are more reasons why it may be useful. First, struct acpi_device pointers allow of much better type checking than void pointers which are ACPI handles, so it should be more difficult to write buggy code using modified struct acpi_dev_node and the new macros. Second, the change should help to reduce (over time) the number of places in which the result of ACPI_HANDLE() is passed to acpi_bus_get_device() in order to obtain a pointer to the struct acpi_device associated with the given "physical" device, because now that pointer is returned by ACPI_COMPANION() directly. Finally, the change should make it easier to write generic code that will build both for CONFIG_ACPI set and unset without adding explicit compiler directives to it. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com> # on Haswell Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Aaron Lu <aaron.lu@intel.com> # for ATA and SDIO part |
||
|
Bartlomiej Zolnierkiewicz
|
0776ae7b89 |
dmaengine: remove DMA unmap flags
Remove no longer needed DMA unmap flags: - DMA_COMPL_SKIP_SRC_UNMAP - DMA_COMPL_SKIP_DEST_UNMAP - DMA_COMPL_SRC_UNMAP_SINGLE - DMA_COMPL_DEST_UNMAP_SINGLE Cc: Vinod Koul <vinod.koul@intel.com> Cc: Tomasz Figa <t.figa@samsung.com> Cc: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Jon Mason <jon.mason@intel.com> Acked-by: Mark Brown <broonie@linaro.org> [djbw: clean up straggling skip unmap flags in ntb] Signed-off-by: Dan Williams <dan.j.williams@intel.com> |
||
|
Dan Williams
|
8971646294 |
async_memcpy: convert to dmaengine_unmap_data
Use the generic unmap object to unmap dma buffers. Cc: Vinod Koul <vinod.koul@intel.com> Cc: Tomasz Figa <t.figa@samsung.com> Cc: Dave Jiang <dave.jiang@intel.com> Reported-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> [bzolnier: add missing unmap->len initialization] [bzolnier: fix whitespace damage] Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> [djbw: add DMA_ENGINE=n support] Signed-off-by: Dan Williams <dan.j.williams@intel.com> |
||
|
Bjorn Helgaas
|
f7625980f5 |
PCI: Fix whitespace, capitalization, and spelling errors
Fix whitespace, capitalization, and spelling errors. No functional change. I know "busses" is not an error, but "buses" was more common, so I used it consistently. Signed-off-by: Marta Rybczynska <rybczynska@gmail.com> (pci_reset_bridge_secondary_bus()) Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
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Linus Torvalds
|
5e30025a31 |
Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core locking changes from Ingo Molnar:
"The biggest changes:
- add lockdep support for seqcount/seqlocks structures, this
unearthed both bugs and required extra annotation.
- move the various kernel locking primitives to the new
kernel/locking/ directory"
* 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
block: Use u64_stats_init() to initialize seqcounts
locking/lockdep: Mark __lockdep_count_forward_deps() as static
lockdep/proc: Fix lock-time avg computation
locking/doc: Update references to kernel/mutex.c
ipv6: Fix possible ipv6 seqlock deadlock
cpuset: Fix potential deadlock w/ set_mems_allowed
seqcount: Add lockdep functionality to seqcount/seqlock structures
net: Explicitly initialize u64_stats_sync structures for lockdep
locking: Move the percpu-rwsem code to kernel/locking/
locking: Move the lglocks code to kernel/locking/
locking: Move the rwsem code to kernel/locking/
locking: Move the rtmutex code to kernel/locking/
locking: Move the semaphore core to kernel/locking/
locking: Move the spinlock code to kernel/locking/
locking: Move the lockdep code to kernel/locking/
locking: Move the mutex code to kernel/locking/
hung_task debugging: Add tracepoint to report the hang
x86/locking/kconfig: Update paravirt spinlock Kconfig description
lockstat: Report avg wait and hold times
lockdep, x86/alternatives: Drop ancient lockdep fixup message
...
|
||
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Linus Torvalds
|
f0d55cc1a6 |
fbdev changes for 3.13
Nothing particularly stands out in this pull request. The biggest part of the changes are cleanups. Maybe one fix to mention is the "fb: reorder the lock sequence to fix potential dead lock" which hopefully fixes the fb locking issues reported by multiple persons. There are also a few commits that have changes to arch/arm/mach-at91 and arch/avr32, which have been acked by the maintainers. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) iQIcBAABAgAGBQJSg2oCAAoJEPo9qoy8lh71vXsP/2AjkzOlcKBPutMG/W30QMHT tkKfr/RL8C3oXcimkE6ch3ksbFj2t5corxa/DLTdESdTpeFAgxj72pcdhN3X4+Xs 7IokExM2W5s6p4pP66PTr2A5XhEyAHtEMp+2JbHPRzwZitblzBLZvuPUJljwJDpj Z9+sD00xv/MZrXDCsEN8k2xdJ3rFn6JgX267y1qajlsocZoseTF2ed94IN/YnIM7 B2hra1B4E21FPYLzRDOJRmZa0YGomLTymezPnPg33hLBhnJU/aG4HLDHKUZWhduz /6UwACH63ja7I2z/8AZHQ1ACdbGheRtHbjwV9LLYlbaAvPmUqNTZ4b6UeQOb/EZ0 3SPCYbwD6+RMhSx/j/XhySvw82RY0i1aTlTDyjgOggfrfdi4x1Wk54bUWp5l9O3D SX1vSpNLGSh4GKXRzJjf3jouG/LcOzlpDlVZXzgsPzkyirluUv6QdMTopJwFwIGx rFgtsbkvhEsFvaNhhVIqQXKfwZ69r42U5JC+fDM5u7VX0mqyJ1usUNGvNSeifcDg EwUAI6RGnOXCO6crj2BZYpRTdc61tnY9b4CGLHDCeQkEXokEsEJ7Mz+8YfSwFo7X wqh+dAPQaixeHtUFZ8GhHXeAsjoQRSBXygf3NSNmCeP3WsmuozbauuujSrrTHITp LOXFPhU9uxHu4mDd6wrq =59+j -----END PGP SIGNATURE----- Merge tag 'fbdev-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux Pull fbdev changes from Tomi Valkeinen: "Nothing particularly stands out in this pull request. The biggest part of the changes are cleanups. Maybe one fix to mention is the "fb: reorder the lock sequence to fix potential dead lock" which hopefully fixes the fb locking issues reported by multiple persons. There are also a few commits that have changes to arch/arm/mach-at91 and arch/avr32, which have been acked by the maintainers" * tag 'fbdev-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux: (143 commits) fb: reorder the lock sequence to fix potential dead lock fbdev: shmobile-lcdcfb: Convert to clk_prepare/unprepare fbdev: shmobile-hdmi: Convert to clk_prepare/unprepare omapdss: Add new panel driver for Topolly td028ttec1 LCD. video: exynos_mipi_dsi: Unlock the mutex before returning video: da8xx-fb: remove unwanted define video: Remove unnecessary semicolons simplefb: use write-combined remapping simplefb: fix unmapping fb during destruction OMAPDSS: connector-dvi: fix releasing i2c_adapter OMAPDSS: DSI: fix perf measuring ifdefs framebuffer: Use fb_<level> framebuffer: Add fb_<level> convenience logging macros efifb: prevent null-deref when iterating dmi_list fbdev: fix error return code in metronomefb_probe() video: xilinxfb: Fix for "Use standard variable name convention" OMAPDSS: Fix de_level in videomode_to_omap_video_timings() video: xilinxfb: Simplify error path video: xilinxfb: Use devm_kzalloc instead of kzalloc video: xilinxfb: Use standard variable name convention ... |
||
|
Linus Torvalds
|
2f466d33f5 |
PCI changes for the v3.13 merge window:
Resource management
- Fix host bridge window coalescing (Alexey Neyman)
- Pass type, width, and prefetchability for window alignment (Wei Yang)
PCI device hotplug
- Convert acpiphp, acpiphp_ibm to dynamic debug (Lan Tianyu)
Power management
- Remove pci_pm_complete() (Liu Chuansheng)
MSI
- Fail initialization if device is not in PCI_D0 (Yijing Wang)
MPS (Max Payload Size)
- Use pcie_get_mps() and pcie_set_mps() to simplify code (Yijing Wang)
- Use pcie_set_readrq() to simplify code (Yijing Wang)
- Use cached pci_dev->pcie_mpss to simplify code (Yijing Wang)
SR-IOV
- Enable upstream bridges even for VFs on virtual buses (Bjorn Helgaas)
- Use pci_is_root_bus() to avoid catching virtual buses (Wei Yang)
Virtualization
- Add x86 MSI masking ops (Konrad Rzeszutek Wilk)
Freescale i.MX6
- Support i.MX6 PCIe controller (Sean Cross)
- Increase link startup timeout (Marek Vasut)
- Probe PCIe in fs_initcall() (Marek Vasut)
- Fix imprecise abort handler (Tim Harvey)
- Remove redundant of_match_ptr (Sachin Kamat)
Renesas R-Car
- Support Gen2 internal PCIe controller (Valentine Barshak)
Samsung Exynos
- Add MSI support (Jingoo Han)
- Turn off power when link fails (Jingoo Han)
- Add Jingoo Han as maintainer (Jingoo Han)
- Add clk_disable_unprepare() on error path (Wei Yongjun)
- Remove redundant of_match_ptr (Sachin Kamat)
Synopsys DesignWare
- Add irq_create_mapping() (Pratyush Anand)
- Add header guards (Seungwon Jeon)
Miscellaneous
- Enable native PCIe services by default on non-ACPI (Andrew Murray)
- Cleanup _OSC usage and messages (Bjorn Helgaas)
- Remove pcibios_last_bus boot option on non-x86 (Bjorn Helgaas)
- Convert bus code to use bus_, drv_, and dev_groups (Greg Kroah-Hartman)
- Remove unused pci_mem_start (Myron Stowe)
- Make sysfs functions static (Sachin Kamat)
- Warn on invalid return from driver probe (Stephen M. Cameron)
- Remove Intel Haswell D3 delays (Todd E Brandt)
- Call pci_set_master() in core if driver doesn't do it (Yinghai Lu)
- Use pci_is_pcie() to simplify code (Yijing Wang)
- Use PCIe capability accessors to simplify code (Yijing Wang)
- Use cached pci_dev->pcie_cap to simplify code (Yijing Wang)
- Removed unused "is_pcie" from struct pci_dev (Yijing Wang)
- Simplify sysfs CPU affinity implementation (Yijing Wang))
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Merge tag 'pci-v3.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI changes from Bjorn Helgaas:
"Resource management
- Fix host bridge window coalescing (Alexey Neyman)
- Pass type, width, and prefetchability for window alignment (Wei Yang)
PCI device hotplug
- Convert acpiphp, acpiphp_ibm to dynamic debug (Lan Tianyu)
Power management
- Remove pci_pm_complete() (Liu Chuansheng)
MSI
- Fail initialization if device is not in PCI_D0 (Yijing Wang)
MPS (Max Payload Size)
- Use pcie_get_mps() and pcie_set_mps() to simplify code (Yijing Wang)
- Use pcie_set_readrq() to simplify code (Yijing Wang)
- Use cached pci_dev->pcie_mpss to simplify code (Yijing Wang)
SR-IOV
- Enable upstream bridges even for VFs on virtual buses (Bjorn Helgaas)
- Use pci_is_root_bus() to avoid catching virtual buses (Wei Yang)
Virtualization
- Add x86 MSI masking ops (Konrad Rzeszutek Wilk)
Freescale i.MX6
- Support i.MX6 PCIe controller (Sean Cross)
- Increase link startup timeout (Marek Vasut)
- Probe PCIe in fs_initcall() (Marek Vasut)
- Fix imprecise abort handler (Tim Harvey)
- Remove redundant of_match_ptr (Sachin Kamat)
Renesas R-Car
- Support Gen2 internal PCIe controller (Valentine Barshak)
Samsung Exynos
- Add MSI support (Jingoo Han)
- Turn off power when link fails (Jingoo Han)
- Add Jingoo Han as maintainer (Jingoo Han)
- Add clk_disable_unprepare() on error path (Wei Yongjun)
- Remove redundant of_match_ptr (Sachin Kamat)
Synopsys DesignWare
- Add irq_create_mapping() (Pratyush Anand)
- Add header guards (Seungwon Jeon)
Miscellaneous
- Enable native PCIe services by default on non-ACPI (Andrew Murray)
- Cleanup _OSC usage and messages (Bjorn Helgaas)
- Remove pcibios_last_bus boot option on non-x86 (Bjorn Helgaas)
- Convert bus code to use bus_, drv_, and dev_groups (Greg Kroah-Hartman)
- Remove unused pci_mem_start (Myron Stowe)
- Make sysfs functions static (Sachin Kamat)
- Warn on invalid return from driver probe (Stephen M. Cameron)
- Remove Intel Haswell D3 delays (Todd E Brandt)
- Call pci_set_master() in core if driver doesn't do it (Yinghai Lu)
- Use pci_is_pcie() to simplify code (Yijing Wang)
- Use PCIe capability accessors to simplify code (Yijing Wang)
- Use cached pci_dev->pcie_cap to simplify code (Yijing Wang)
- Removed unused "is_pcie" from struct pci_dev (Yijing Wang)
- Simplify sysfs CPU affinity implementation (Yijing Wang)"
* tag 'pci-v3.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (79 commits)
PCI: Enable upstream bridges even for VFs on virtual buses
PCI: Add pci_upstream_bridge()
PCI: Add x86_msi.msi_mask_irq() and msix_mask_irq()
PCI: Warn on driver probe return value greater than zero
PCI: Drop warning about drivers that don't use pci_set_master()
PCI: Workaround missing pci_set_master in pci drivers
powerpc/pci: Use pci_is_pcie() to simplify code [fix]
PCI: Update pcie_ports 'auto' behavior for non-ACPI platforms
PCI: imx6: Probe the PCIe in fs_initcall()
PCI: Add R-Car Gen2 internal PCI support
PCI: imx6: Remove redundant of_match_ptr
PCI: Report pci_pme_active() kmalloc failure
mn10300/PCI: Remove useless pcibios_last_bus
frv/PCI: Remove pcibios_last_bus
PCI: imx6: Increase link startup timeout
PCI: exynos: Remove redundant of_match_ptr
PCI: imx6: Fix imprecise abort handler
PCI: Fail MSI/MSI-X initialization if device is not in PCI_D0
PCI: imx6: Remove redundant dev_err() in imx6_pcie_probe()
x86/PCI: Coalesce multiple overlapping host bridge windows
...
|
||
|
Linus Torvalds
|
f9300eaaac |
ACPI and power management updates for 3.13-rc1
- New power capping framework and the the Intel Running Average Power
Limit (RAPL) driver using it from Srinivas Pandruvada and Jacob Pan.
- Addition of the in-kernel switching feature to the arm_big_little
cpufreq driver from Viresh Kumar and Nicolas Pitre.
- cpufreq support for iMac G5 from Aaro Koskinen.
- Baytrail processors support for intel_pstate from Dirk Brandewie.
- cpufreq support for Midway/ECX-2000 from Mark Langsdorf.
- ARM vexpress/TC2 cpufreq support from Sudeep KarkadaNagesha.
- ACPI power management support for the I2C and SPI bus types from
Mika Westerberg and Lv Zheng.
- cpufreq core fixes and cleanups from Viresh Kumar, Srivatsa S Bhat,
Stratos Karafotis, Xiaoguang Chen, Lan Tianyu.
- cpufreq drivers updates (mostly fixes and cleanups) from Viresh Kumar,
Aaro Koskinen, Jungseok Lee, Sudeep KarkadaNagesha, Lukasz Majewski,
Manish Badarkhe, Hans-Christian Egtvedt, Evgeny Kapaev.
- intel_pstate updates from Dirk Brandewie and Adrian Huang.
- ACPICA update to version 20130927 includig fixes and cleanups and
some reduction of divergences between the ACPICA code in the kernel
and ACPICA upstream in order to improve the automatic ACPICA patch
generation process. From Bob Moore, Lv Zheng, Tomasz Nowicki,
Naresh Bhat, Bjorn Helgaas, David E Box.
- ACPI IPMI driver fixes and cleanups from Lv Zheng.
- ACPI hotplug fixes and cleanups from Bjorn Helgaas, Toshi Kani,
Zhang Yanfei, Rafael J Wysocki.
- Conversion of the ACPI AC driver to the platform bus type and
multiple driver fixes and cleanups related to ACPI from Zhang Rui.
- ACPI processor driver fixes and cleanups from Hanjun Guo, Jiang Liu,
Bartlomiej Zolnierkiewicz, Mathieu Rhéaume, Rafael J Wysocki.
- Fixes and cleanups and new blacklist entries related to the ACPI
video support from Aaron Lu, Felipe Contreras, Lennart Poettering,
Kirill Tkhai.
- cpuidle core cleanups from Viresh Kumar and Lorenzo Pieralisi.
- cpuidle drivers fixes and cleanups from Daniel Lezcano, Jingoo Han,
Bartlomiej Zolnierkiewicz, Prarit Bhargava.
- devfreq updates from Sachin Kamat, Dan Carpenter, Manish Badarkhe.
- Operation Performance Points (OPP) core updates from Nishanth Menon.
- Runtime power management core fix from Rafael J Wysocki and update
from Ulf Hansson.
- Hibernation fixes from Aaron Lu and Rafael J Wysocki.
- Device suspend/resume lockup detection mechanism from Benoit Goby.
- Removal of unused proc directories created for various ACPI drivers
from Lan Tianyu.
- ACPI LPSS driver fix and new device IDs for the ACPI platform scan
handler from Heikki Krogerus and Jarkko Nikula.
- New ACPI _OSI blacklist entry for Toshiba NB100 from Levente Kurusa.
- Assorted fixes and cleanups related to ACPI from Andy Shevchenko,
Al Stone, Bartlomiej Zolnierkiewicz, Colin Ian King, Dan Carpenter,
Felipe Contreras, Jianguo Wu, Lan Tianyu, Yinghai Lu, Mathias Krause,
Liu Chuansheng.
- Assorted PM fixes and cleanups from Andy Shevchenko, Thierry Reding,
Jean-Christophe Plagniol-Villard.
/
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Merge tag 'pm+acpi-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management updates from Rafael J Wysocki:
- New power capping framework and the the Intel Running Average Power
Limit (RAPL) driver using it from Srinivas Pandruvada and Jacob Pan.
- Addition of the in-kernel switching feature to the arm_big_little
cpufreq driver from Viresh Kumar and Nicolas Pitre.
- cpufreq support for iMac G5 from Aaro Koskinen.
- Baytrail processors support for intel_pstate from Dirk Brandewie.
- cpufreq support for Midway/ECX-2000 from Mark Langsdorf.
- ARM vexpress/TC2 cpufreq support from Sudeep KarkadaNagesha.
- ACPI power management support for the I2C and SPI bus types from Mika
Westerberg and Lv Zheng.
- cpufreq core fixes and cleanups from Viresh Kumar, Srivatsa S Bhat,
Stratos Karafotis, Xiaoguang Chen, Lan Tianyu.
- cpufreq drivers updates (mostly fixes and cleanups) from Viresh
Kumar, Aaro Koskinen, Jungseok Lee, Sudeep KarkadaNagesha, Lukasz
Majewski, Manish Badarkhe, Hans-Christian Egtvedt, Evgeny Kapaev.
- intel_pstate updates from Dirk Brandewie and Adrian Huang.
- ACPICA update to version 20130927 includig fixes and cleanups and
some reduction of divergences between the ACPICA code in the kernel
and ACPICA upstream in order to improve the automatic ACPICA patch
generation process. From Bob Moore, Lv Zheng, Tomasz Nowicki, Naresh
Bhat, Bjorn Helgaas, David E Box.
- ACPI IPMI driver fixes and cleanups from Lv Zheng.
- ACPI hotplug fixes and cleanups from Bjorn Helgaas, Toshi Kani, Zhang
Yanfei, Rafael J Wysocki.
- Conversion of the ACPI AC driver to the platform bus type and
multiple driver fixes and cleanups related to ACPI from Zhang Rui.
- ACPI processor driver fixes and cleanups from Hanjun Guo, Jiang Liu,
Bartlomiej Zolnierkiewicz, Mathieu Rhéaume, Rafael J Wysocki.
- Fixes and cleanups and new blacklist entries related to the ACPI
video support from Aaron Lu, Felipe Contreras, Lennart Poettering,
Kirill Tkhai.
- cpuidle core cleanups from Viresh Kumar and Lorenzo Pieralisi.
- cpuidle drivers fixes and cleanups from Daniel Lezcano, Jingoo Han,
Bartlomiej Zolnierkiewicz, Prarit Bhargava.
- devfreq updates from Sachin Kamat, Dan Carpenter, Manish Badarkhe.
- Operation Performance Points (OPP) core updates from Nishanth Menon.
- Runtime power management core fix from Rafael J Wysocki and update
from Ulf Hansson.
- Hibernation fixes from Aaron Lu and Rafael J Wysocki.
- Device suspend/resume lockup detection mechanism from Benoit Goby.
- Removal of unused proc directories created for various ACPI drivers
from Lan Tianyu.
- ACPI LPSS driver fix and new device IDs for the ACPI platform scan
handler from Heikki Krogerus and Jarkko Nikula.
- New ACPI _OSI blacklist entry for Toshiba NB100 from Levente Kurusa.
- Assorted fixes and cleanups related to ACPI from Andy Shevchenko, Al
Stone, Bartlomiej Zolnierkiewicz, Colin Ian King, Dan Carpenter,
Felipe Contreras, Jianguo Wu, Lan Tianyu, Yinghai Lu, Mathias Krause,
Liu Chuansheng.
- Assorted PM fixes and cleanups from Andy Shevchenko, Thierry Reding,
Jean-Christophe Plagniol-Villard.
* tag 'pm+acpi-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (386 commits)
cpufreq: conservative: fix requested_freq reduction issue
ACPI / hotplug: Consolidate deferred execution of ACPI hotplug routines
PM / runtime: Use pm_runtime_put_sync() in __device_release_driver()
ACPI / event: remove unneeded NULL pointer check
Revert "ACPI / video: Ignore BIOS initial backlight value for HP 250 G1"
ACPI / video: Quirk initial backlight level 0
ACPI / video: Fix initial level validity test
intel_pstate: skip the driver if ACPI has power mgmt option
PM / hibernate: Avoid overflow in hibernate_preallocate_memory()
ACPI / hotplug: Do not execute "insert in progress" _OST
ACPI / hotplug: Carry out PCI root eject directly
ACPI / hotplug: Merge device hot-removal routines
ACPI / hotplug: Make acpi_bus_hot_remove_device() internal
ACPI / hotplug: Simplify device ejection routines
ACPI / hotplug: Fix handle_root_bridge_removal()
ACPI / hotplug: Refuse to hot-remove all objects with disabled hotplug
ACPI / scan: Start matching drivers after trying scan handlers
ACPI: Remove acpi_pci_slot_init() headers from internal.h
ACPI / blacklist: fix name of ThinkPad Edge E530
PowerCap: Fix build error with option -Werror=format-security
...
Conflicts:
arch/arm/mach-omap2/opp.c
drivers/Kconfig
drivers/spi/spi.c
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Shaohua Li
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82e06c8111 |
wait: add wait_event_cmd()
Add a new API wait_event_cmd(). It's a variant of wait_even() with two commands executed. One is executed before sleep, another after sleep. Modified to match use wait.h approach based on suggestion by Peter Zijlstra <peterz@infradead.org> - neilb Signed-off-by: Shaohua Li <shli@fusionio.com> Signed-off-by: NeilBrown <neilb@suse.de> |
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Linus Torvalds
|
82cb6acea4 |
MTD merge for 3.13
* Unify some compile-time differences so that we have fewer uses of
#ifdef CONFIG_OF in atmel_nand
* Other general cleanups (removing unused functions, options, variables,
fields; use correct interfaces)
* Fix BUG() for new odd-sized NAND, which report non-power-of-2 dimensions via
ONFI
* Miscellaneous driver fixes (SPI NOR flash; BCM47xx NAND flash; etc.)
* Improve differentiation between SLC and MLC NAND -- this clarifies an ABI
issue regarding the MTD "type" (in sysfs and in ioctl(MEMGETINFO)), where
the MTD_MLCNANDFLASH type was present but inconsistently used
* Extend GPMI NAND to support multi-chip-select NAND for some platforms
* Many improvements to the OMAP2/3 NAND driver, including an expanded DT
binding to bring us closer to mainline support for some OMAP systems
* Fix a deadlock in the error path of the Atmel NAND driver probe
* Correct the error codes from MTD mmap() to conform to POSIX and the Linux
Programmer's Manual. This is an acknowledged change in the MTD ABI, but I
can't imagine somebody relying on the non-standard -ENOSYS error code
specifically. Am I just being unimaginative? :)
* Fix a few important GPMI NAND bugs (one regression from 3.12 and one
long-standing race condition)
* More? Read the log!
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Merge tag 'for-linus-20131112' of git://git.infradead.org/linux-mtd
Pull MTD changes from Brian Norris:
- Unify some compile-time differences so that we have fewer uses of
#ifdef CONFIG_OF in atmel_nand
- Other general cleanups (removing unused functions, options,
variables, fields; use correct interfaces)
- Fix BUG() for new odd-sized NAND, which report non-power-of-2
dimensions via ONFI
- Miscellaneous driver fixes (SPI NOR flash; BCM47xx NAND flash; etc.)
- Improve differentiation between SLC and MLC NAND -- this clarifies an
ABI issue regarding the MTD "type" (in sysfs and in the MEMGETINFO
ioctl), where the MTD_MLCNANDFLASH type was present but
inconsistently used
- Extend GPMI NAND to support multi-chip-select NAND for some platforms
- Many improvements to the OMAP2/3 NAND driver, including an expanded
DT binding to bring us closer to mainline support for some OMAP
systems
- Fix a deadlock in the error path of the Atmel NAND driver probe
- Correct the error codes from MTD mmap() to conform to POSIX and the
Linux Programmer's Manual. This is an acknowledged change in the MTD
ABI, but I can't imagine somebody relying on the non-standard -ENOSYS
error code specifically. Am I just being unimaginative? :)
- Fix a few important GPMI NAND bugs (one regression from 3.12 and one
long-standing race condition)
- More? Read the log!
* tag 'for-linus-20131112' of git://git.infradead.org/linux-mtd: (98 commits)
mtd: gpmi: fix the NULL pointer
mtd: gpmi: fix kernel BUG due to racing DMA operations
mtd: mtdchar: return expected errors on mmap() call
mtd: gpmi: only scan two chips for imx6
mtd: gpmi: Use devm_kzalloc()
mtd: atmel_nand: fix bug driver will in a dead lock if no nand detected
mtd: nand: use a local variable to simplify the nand_scan_tail
mtd: nand: remove deprecated IRQF_DISABLED
mtd: dataflash: Say if we find a device we don't support
mtd: nand: omap: fix error return code in omap_nand_probe()
mtd: nand_bbt: kill NAND_BBT_SCANALLPAGES
mtd: m25p80: fixup device removal failure path
mtd: mxc_nand: Include linux/of.h header
mtd: remove duplicated include from mtdcore.c
mtd: m25p80: add support for Macronix mx25l3255e
mtd: nand: omap: remove selection of BCH ecc-scheme via KConfig
mtd: nand: omap: updated devm_xx for all resource allocation and free calls
mtd: nand: omap: use drivers/mtd/nand/nand_bch.c wrapper for BCH ECC instead of lib/bch.c
mtd: nand: omap: clean-up ecc layout for BCH ecc schemes
mtd: nand: omap2: clean-up BCHx_HW and BCHx_SW ECC configurations in device_probe
...
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Linus Torvalds
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0910c0bdf7 |
Merge branch 'for-3.13/core' of git://git.kernel.dk/linux-block
Pull block IO core updates from Jens Axboe:
"This is the pull request for the core changes in the block layer for
3.13. It contains:
- The new blk-mq request interface.
This is a new and more scalable queueing model that marries the
best part of the request based interface we currently have (which
is fully featured, but scales poorly) and the bio based "interface"
which the new drivers for high IOPS devices end up using because
it's much faster than the request based one.
The bio interface has no block layer support, since it taps into
the stack much earlier. This means that drivers end up having to
implement a lot of functionality on their own, like tagging,
timeout handling, requeue, etc. The blk-mq interface provides all
these. Some drivers even provide a switch to select bio or rq and
has code to handle both, since things like merging only works in
the rq model and hence is faster for some workloads. This is a
huge mess. Conversion of these drivers nets us a substantial code
reduction. Initial results on converting SCSI to this model even
shows an 8x improvement on single queue devices. So while the
model was intended to work on the newer multiqueue devices, it has
substantial improvements for "classic" hardware as well. This code
has gone through extensive testing and development, it's now ready
to go. A pull request is coming to convert virtio-blk to this
model will be will be coming as well, with more drivers scheduled
for 3.14 conversion.
- Two blktrace fixes from Jan and Chen Gang.
- A plug merge fix from Alireza Haghdoost.
- Conversion of __get_cpu_var() from Christoph Lameter.
- Fix for sector_div() with 64-bit divider from Geert Uytterhoeven.
- A fix for a race between request completion and the timeout
handling from Jeff Moyer. This is what caused the merge conflict
with blk-mq/core, in case you are looking at that.
- A dm stacking fix from Mike Snitzer.
- A code consolidation fix and duplicated code removal from Kent
Overstreet.
- A handful of block bug fixes from Mikulas Patocka, fixing a loop
crash and memory corruption on blk cg.
- Elevator switch bug fix from Tomoki Sekiyama.
A heads-up that I had to rebase this branch. Initially the immutable
bio_vecs had been queued up for inclusion, but a week later, it became
clear that it wasn't fully cooked yet. So the decision was made to
pull this out and postpone it until 3.14. It was a straight forward
rebase, just pruning out the immutable series and the later fixes of
problems with it. The rest of the patches applied directly and no
further changes were made"
* 'for-3.13/core' of git://git.kernel.dk/linux-block: (31 commits)
block: replace IS_ERR and PTR_ERR with PTR_ERR_OR_ZERO
block: replace IS_ERR and PTR_ERR with PTR_ERR_OR_ZERO
block: Do not call sector_div() with a 64-bit divisor
kernel: trace: blktrace: remove redundent memcpy() in compat_blk_trace_setup()
block: Consolidate duplicated bio_trim() implementations
block: Use rw_copy_check_uvector()
block: Enable sysfs nomerge control for I/O requests in the plug list
block: properly stack underlying max_segment_size to DM device
elevator: acquire q->sysfs_lock in elevator_change()
elevator: Fix a race in elevator switching and md device initialization
block: Replace __get_cpu_var uses
bdi: test bdi_init failure
block: fix a probe argument to blk_register_region
loop: fix crash if blk_alloc_queue fails
blk-core: Fix memory corruption if blkcg_init_queue fails
block: fix race between request completion and timeout handling
blktrace: Send BLK_TN_PROCESS events to all running traces
blk-mq: don't disallow request merges for req->special being set
blk-mq: mq plug list breakage
blk-mq: fix for flush deadlock
...
|
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Dan Williams
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45c463ae92 |
dmaengine: reference counted unmap data
Hang a common 'unmap' object off of dma descriptors for the purpose of providing a unified unmapping interface. The lifetime of a mapping may span multiple descriptors, so these unmap objects are reference counted by related descriptor. Cc: Vinod Koul <vinod.koul@intel.com> Cc: Tomasz Figa <t.figa@samsung.com> Cc: Dave Jiang <dave.jiang@intel.com> [bzolnier: fix IS_ENABLED() check] [bzolnier: fix release ordering in dmaengine_destroy_unmap_pool()] [bzolnier: fix check for success in dmaengine_init_unmap_pool()] [bzolnier: use mempool_free() instead of kmem_cache_free()] [bzolnier: add missing unmap->len initializations] [bzolnier: add __init tag to dmaengine_init_unmap_pool()] Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> [djbw: move DMAENGINE=n support to this patch for async_tx] Signed-off-by: Dan Williams <dan.j.williams@intel.com> |
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Dan Williams
|
d38a8c622a |
dmaengine: prepare for generic 'unmap' data
Add a hook for a common dma unmap implementation to enable removal of the per driver custom unmap code. (A reworked version of Bartlomiej Zolnierkiewicz's patches to remove the custom callbacks and the size increase of dma_async_tx_descriptor for drivers that don't care about raid). Cc: Vinod Koul <vinod.koul@intel.com> Cc: Tomasz Figa <t.figa@samsung.com> Cc: Dave Jiang <dave.jiang@intel.com> [bzolnier: prepare pl330 driver for adding missing unmap while at it] Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> |
||
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Linus Torvalds
|
f47671e2d8 |
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM updates from Russell King:
"Included in this series are:
1. BE8 (modern big endian) changes for ARM from Ben Dooks
2. big.Little support from Nicolas Pitre and Dave Martin
3. support for LPAE systems with all system memory above 4GB
4. Perf updates from Will Deacon
5. Additional prefetching and other performance improvements from Will.
6. Neon-optimised AES implementation fro Ard.
7. A number of smaller fixes scattered around the place.
There is a rather horrid merge conflict in tools/perf - I was never
notified of the conflict because it originally occurred between Will's
tree and other stuff. Consequently I have a resolution which Will
forwarded me, which I'll forward on immediately after sending this
mail.
The other notable thing is I'm expecting some build breakage in the
crypto stuff on ARM only with Ard's AES patches. These were merged
into a stable git branch which others had already pulled, so there's
little I can do about this. The problem is caused because these
patches have a dependency on some code in the crypto git tree - I
tried requesting a branch I can pull to resolve these, and all I got
each time from the crypto people was "we'll revert our patches then"
which would only make things worse since I still don't have the
dependent patches. I've no idea what's going on there or how to
resolve that, and since I can't split these patches from the rest of
this pull request, I'm rather stuck with pushing this as-is or
reverting Ard's patches.
Since it should "come out in the wash" I've left them in - the only
build problems they seem to cause at the moment are with randconfigs,
and since it's a new feature anyway. However, if by -rc1 the
dependencies aren't in, I think it'd be best to revert Ard's patches"
I resolved the perf conflict roughly as per the patch sent by Russell,
but there may be some differences. Any errors are likely mine. Let's
see how the crypto issues work out..
* 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (110 commits)
ARM: 7868/1: arm/arm64: remove atomic_clear_mask() in "include/asm/atomic.h"
ARM: 7867/1: include: asm: use 'int' instead of 'unsigned long' for 'oldval' in atomic_cmpxchg().
ARM: 7866/1: include: asm: use 'long long' instead of 'u64' within atomic.h
ARM: 7871/1: amba: Extend number of IRQS
ARM: 7887/1: Don't smp_cross_call() on UP devices in arch_irq_work_raise()
ARM: 7872/1: Support arch_irq_work_raise() via self IPIs
ARM: 7880/1: Clear the IT state independent of the Thumb-2 mode
ARM: 7878/1: nommu: Implement dummy early_paging_init()
ARM: 7876/1: clear Thumb-2 IT state on exception handling
ARM: 7874/2: bL_switcher: Remove cpu_hotplug_driver_{lock,unlock}()
ARM: footbridge: fix build warnings for netwinder
ARM: 7873/1: vfp: clear vfp_current_hw_state for dying cpu
ARM: fix misplaced arch_virt_to_idmap()
ARM: 7848/1: mcpm: Implement cpu_kill() to synchronise on powerdown
ARM: 7847/1: mcpm: Factor out logical-to-physical CPU translation
ARM: 7869/1: remove unused XSCALE_PMU Kconfig param
ARM: 7864/1: Handle 64-bit memory in case of 32-bit phys_addr_t
ARM: 7863/1: Let arm_add_memory() always use 64-bit arguments
ARM: 7862/1: pcpu: replace __get_cpu_var_uses
ARM: 7861/1: cacheflush: consolidate single-CPU ARMv7 cache disabling code
...
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Linus Torvalds
|
8ceafbfa91 |
Merge branch 'for-linus-dma-masks' of git://git.linaro.org/people/rmk/linux-arm
Pull DMA mask updates from Russell King:
"This series cleans up the handling of DMA masks in a lot of drivers,
fixing some bugs as we go.
Some of the more serious errors include:
- drivers which only set their coherent DMA mask if the attempt to
set the streaming mask fails.
- drivers which test for a NULL dma mask pointer, and then set the
dma mask pointer to a location in their module .data section -
which will cause problems if the module is reloaded.
To counter these, I have introduced two helper functions:
- dma_set_mask_and_coherent() takes care of setting both the
streaming and coherent masks at the same time, with the correct
error handling as specified by the API.
- dma_coerce_mask_and_coherent() which resolves the problem of
drivers forcefully setting DMA masks. This is more a marker for
future work to further clean these locations up - the code which
creates the devices really should be initialising these, but to fix
that in one go along with this change could potentially be very
disruptive.
The last thing this series does is prise away some of Linux's addition
to "DMA addresses are physical addresses and RAM always starts at
zero". We have ARM LPAE systems where all system memory is above 4GB
physical, hence having DMA masks interpreted by (eg) the block layers
as describing physical addresses in the range 0..DMAMASK fails on
these platforms. Santosh Shilimkar addresses this in this series; the
patches were copied to the appropriate people multiple times but were
ignored.
Fixing this also gets rid of some ARM weirdness in the setup of the
max*pfn variables, and brings ARM into line with every other Linux
architecture as far as those go"
* 'for-linus-dma-masks' of git://git.linaro.org/people/rmk/linux-arm: (52 commits)
ARM: 7805/1: mm: change max*pfn to include the physical offset of memory
ARM: 7797/1: mmc: Use dma_max_pfn(dev) helper for bounce_limit calculations
ARM: 7796/1: scsi: Use dma_max_pfn(dev) helper for bounce_limit calculations
ARM: 7795/1: mm: dma-mapping: Add dma_max_pfn(dev) helper function
ARM: 7794/1: block: Rename parameter dma_mask to max_addr for blk_queue_bounce_limit()
ARM: DMA-API: better handing of DMA masks for coherent allocations
ARM: 7857/1: dma: imx-sdma: setup dma mask
DMA-API: firmware/google/gsmi.c: avoid direct access to DMA masks
DMA-API: dcdbas: update DMA mask handing
DMA-API: dma: edma.c: no need to explicitly initialize DMA masks
DMA-API: usb: musb: use platform_device_register_full() to avoid directly messing with dma masks
DMA-API: crypto: remove last references to 'static struct device *dev'
DMA-API: crypto: fix ixp4xx crypto platform device support
DMA-API: others: use dma_set_coherent_mask()
DMA-API: staging: use dma_set_coherent_mask()
DMA-API: usb: use new dma_coerce_mask_and_coherent()
DMA-API: usb: use dma_set_coherent_mask()
DMA-API: parport: parport_pc.c: use dma_coerce_mask_and_coherent()
DMA-API: net: octeon: use dma_coerce_mask_and_coherent()
DMA-API: net: nxp/lpc_eth: use dma_coerce_mask_and_coherent()
...
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Thomas Gleixner
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00d1a39e69 |
preempt: Make PREEMPT_ACTIVE generic
No point in having this bit defined by architecture. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20130917183629.090698799@linutronix.de |
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Thomas Gleixner
|
54197e43a4 |
hardirq: Make hardirq bits generic
There is no reason for per arch hardirq bits. Make them all generic Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20130917183628.534494408@linutronix.de |
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Thomas Gleixner
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b39898cd40 |
genirq: Prevent spurious detection for unconditionally polled interrupts
On a 68k platform a couple of interrupts are demultiplexed and "polled" from a top level interrupt. Unfortunately there is no way to determine which of the sub interrupts raised the top level interrupt, so all of the demultiplexed interrupt handlers need to be invoked. Given a high enough frequency this can trigger the spurious interrupt detection mechanism, if one of the demultiplex interrupts returns IRQ_NONE continuously. But this is a false positive as the polling causes this behaviour and not buggy hardware/software. Introduce IRQ_POLLED which can be set at interrupt chip setup time via irq_set_status_flags(). The flag excludes the interrupt from the spurious detector and from all core polling activities. Reported-and-tested-by: Michael Schmitz <schmitzmic@gmail.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: linux-m68k@vger.kernel.org Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1311061149250.23353@ionos.tec.linutronix.de |
||
|
Linus Torvalds
|
42a2d923cc |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
1) The addition of nftables. No longer will we need protocol aware
firewall filtering modules, it can all live in userspace.
At the core of nftables is a, for lack of a better term, virtual
machine that executes byte codes to inspect packet or metadata
(arriving interface index, etc.) and make verdict decisions.
Besides support for loading packet contents and comparing them, the
interpreter supports lookups in various datastructures as
fundamental operations. For example sets are supports, and
therefore one could create a set of whitelist IP address entries
which have ACCEPT verdicts attached to them, and use the appropriate
byte codes to do such lookups.
Since the interpreted code is composed in userspace, userspace can
do things like optimize things before giving it to the kernel.
Another major improvement is the capability of atomically updating
portions of the ruleset. In the existing netfilter implementation,
one has to update the entire rule set in order to make a change and
this is very expensive.
Userspace tools exist to create nftables rules using existing
netfilter rule sets, but both kernel implementations will need to
co-exist for quite some time as we transition from the old to the
new stuff.
Kudos to Patrick McHardy, Pablo Neira Ayuso, and others who have
worked so hard on this.
2) Daniel Borkmann and Hannes Frederic Sowa made several improvements
to our pseudo-random number generator, mostly used for things like
UDP port randomization and netfitler, amongst other things.
In particular the taus88 generater is updated to taus113, and test
cases are added.
3) Support 64-bit rates in HTB and TBF schedulers, from Eric Dumazet
and Yang Yingliang.
4) Add support for new 577xx tigon3 chips to tg3 driver, from Nithin
Sujir.
5) Fix two fatal flaws in TCP dynamic right sizing, from Eric Dumazet,
Neal Cardwell, and Yuchung Cheng.
6) Allow IP_TOS and IP_TTL to be specified in sendmsg() ancillary
control message data, much like other socket option attributes.
From Francesco Fusco.
7) Allow applications to specify a cap on the rate computed
automatically by the kernel for pacing flows, via a new
SO_MAX_PACING_RATE socket option. From Eric Dumazet.
8) Make the initial autotuned send buffer sizing in TCP more closely
reflect actual needs, from Eric Dumazet.
9) Currently early socket demux only happens for TCP sockets, but we
can do it for connected UDP sockets too. Implementation from Shawn
Bohrer.
10) Refactor inet socket demux with the goal of improving hash demux
performance for listening sockets. With the main goals being able
to use RCU lookups on even request sockets, and eliminating the
listening lock contention. From Eric Dumazet.
11) The bonding layer has many demuxes in it's fast path, and an RCU
conversion was started back in 3.11, several changes here extend the
RCU usage to even more locations. From Ding Tianhong and Wang
Yufen, based upon suggestions by Nikolay Aleksandrov and Veaceslav
Falico.
12) Allow stackability of segmentation offloads to, in particular, allow
segmentation offloading over tunnels. From Eric Dumazet.
13) Significantly improve the handling of secret keys we input into the
various hash functions in the inet hashtables, TCP fast open, as
well as syncookies. From Hannes Frederic Sowa. The key fundamental
operation is "net_get_random_once()" which uses static keys.
Hannes even extended this to ipv4/ipv6 fragmentation handling and
our generic flow dissector.
14) The generic driver layer takes care now to set the driver data to
NULL on device removal, so it's no longer necessary for drivers to
explicitly set it to NULL any more. Many drivers have been cleaned
up in this way, from Jingoo Han.
15) Add a BPF based packet scheduler classifier, from Daniel Borkmann.
16) Improve CRC32 interfaces and generic SKB checksum iterators so that
SCTP's checksumming can more cleanly be handled. Also from Daniel
Borkmann.
17) Add a new PMTU discovery mode, IP_PMTUDISC_INTERFACE, which forces
using the interface MTU value. This helps avoid PMTU attacks,
particularly on DNS servers. From Hannes Frederic Sowa.
18) Use generic XPS for transmit queue steering rather than internal
(re-)implementation in virtio-net. From Jason Wang.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1622 commits)
random32: add test cases for taus113 implementation
random32: upgrade taus88 generator to taus113 from errata paper
random32: move rnd_state to linux/random.h
random32: add prandom_reseed_late() and call when nonblocking pool becomes initialized
random32: add periodic reseeding
random32: fix off-by-one in seeding requirement
PHY: Add RTL8201CP phy_driver to realtek
xtsonic: add missing platform_set_drvdata() in xtsonic_probe()
macmace: add missing platform_set_drvdata() in mace_probe()
ethernet/arc/arc_emac: add missing platform_set_drvdata() in arc_emac_probe()
ipv6: protect for_each_sk_fl_rcu in mem_check with rcu_read_lock_bh
vlan: Implement vlan_dev_get_egress_qos_mask as an inline.
ixgbe: add warning when max_vfs is out of range.
igb: Update link modes display in ethtool
netfilter: push reasm skb through instead of original frag skbs
ip6_output: fragment outgoing reassembled skb properly
MAINTAINERS: mv643xx_eth: take over maintainership from Lennart
net_sched: tbf: support of 64bit rates
ixgbe: deleting dfwd stations out of order can cause null ptr deref
ixgbe: fix build err, num_rx_queues is only available with CONFIG_RPS
...
|
||
|
Linus Torvalds
|
5cbb3d216e |
Merge branch 'akpm' (patches from Andrew Morton)
Merge first patch-bomb from Andrew Morton: "Quite a lot of other stuff is banked up awaiting further next->mainline merging, but this batch contains: - Lots of random misc patches - OCFS2 - Most of MM - backlight updates - lib/ updates - printk updates - checkpatch updates - epoll tweaking - rtc updates - hfs - hfsplus - documentation - procfs - update gcov to gcc-4.7 format - IPC" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (269 commits) ipc, msg: fix message length check for negative values ipc/util.c: remove unnecessary work pending test devpts: plug the memory leak in kill_sb ./Makefile: export initial ramdisk compression config option init/Kconfig: add option to disable kernel compression drivers: w1: make w1_slave::flags long to avoid memory corruption drivers/w1/masters/ds1wm.cuse dev_get_platdata() drivers/memstick/core/ms_block.c: fix unreachable state in h_msb_read_page() drivers/memstick/core/mspro_block.c: fix attributes array allocation drivers/pps/clients/pps-gpio.c: remove redundant of_match_ptr kernel/panic.c: reduce 1 byte usage for print tainted buffer gcov: reuse kbasename helper kernel/gcov/fs.c: use pr_warn() kernel/module.c: use pr_foo() gcov: compile specific gcov implementation based on gcc version gcov: add support for gcc 4.7 gcov format gcov: move gcov structs definitions to a gcc version specific file kernel/taskstats.c: return -ENOMEM when alloc memory fails in add_del_listener() kernel/taskstats.c: add nla_nest_cancel() for failure processing between nla_nest_start() and nla_nest_end() kernel/sysctl_binary.c: use scnprintf() instead of snprintf() ... |
||
|
Linus Torvalds
|
9bc9ccd7db |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs updates from Al Viro: "All kinds of stuff this time around; some more notable parts: - RCU'd vfsmounts handling - new primitives for coredump handling - files_lock is gone - Bruce's delegations handling series - exportfs fixes plus misc stuff all over the place" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (101 commits) ecryptfs: ->f_op is never NULL locks: break delegations on any attribute modification locks: break delegations on link locks: break delegations on rename locks: helper functions for delegation breaking locks: break delegations on unlink namei: minor vfs_unlink cleanup locks: implement delegations locks: introduce new FL_DELEG lock flag vfs: take i_mutex on renamed file vfs: rename I_MUTEX_QUOTA now that it's not used for quotas vfs: don't use PARENT/CHILD lock classes for non-directories vfs: pull ext4's double-i_mutex-locking into common code exportfs: fix quadratic behavior in filehandle lookup exportfs: better variable name exportfs: move most of reconnect_path to helper function exportfs: eliminate unused "noprogress" counter exportfs: stop retrying once we race with rename/remove exportfs: clear DISCONNECTED on all parents sooner exportfs: more detailed comment for path_reconnect ... |
||
|
Linus Torvalds
|
a7fa20a594 |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse updates from Miklos Szeredi: "This adds a ->writepage() implementation to fuse, improving mmaped writeout and paving the way for buffered writeback. And there's a patch to add a fix minor number for /dev/cuse, similarly to /dev/fuse" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: fuse: writepages: protect secondary requests from fuse file release fuse: writepages: update bdi writeout when deleting secondary request fuse: writepages: crop secondary requests fuse: writepages: roll back changes if request not found cuse: add fix minor number to /dev/cuse fuse: writepage: skip already in flight fuse: writepages: handle same page rewrites fuse: writepages: fix aggregation fuse: fix race in fuse_writepages() fuse: Implement writepages callback fuse: don't BUG on no write file fuse: lock page in mkwrite fuse: Prepare to handle multiple pages in writeback fuse: Getting file for writeback helper |
||
|
Linus Torvalds
|
a998646456 |
Merge branch 'for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup changes from Tejun Heo: "Not too much activity this time around. css_id is finally killed and a minor update to device_cgroup" * 'for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: device_cgroup: remove can_attach cgroup: kill css_id memcg: stop using css id memcg: fail to create cgroup if the cgroup id is too big memcg: convert to use cgroup id memcg: convert to use cgroup_is_descendant() |
||
|
Linus Torvalds
|
13aa7e0bc2 |
Merge branch 'for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
Pull libata changes from Tejun Heo: "Nothing too interesting. Only two minor fixes in libata core. Most changes are specific to hardware which isn't too common" * 'for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: ahci: Add Device IDs for Intel Wildcat Point-LP sata_rcar: Convert to clk_prepare/unprepare drivers/libata: Set max sector to 65535 for Slimtype DVD A DS8A9SH drive libata: Add some missing command descriptions sata_highbank: clear whole array in highbank_initialize_phys() ahci: disabled FBS prior to issuing software reset libata: Fix display of sata speed ahci: imx: setup power saving methods ata_piix: minor typo and a printk fix ahci: Changing two module params with static and __read_mostly |
||
|
Linus Torvalds
|
c08acff054 |
Merge branch 'for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
Pull percpu changes from Tejun Heo: "Two smallish changes for percpu. Two patches to remove unused this_cpu_xor() and one to fix a bug in percpu init failure path so that it can reach the proper BUG() instead of oopsing earlier" * 'for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: x86: remove this_cpu_xor() implementation percpu: remove this_cpu_xor() implementation percpu: fix bootmem error handling in pcpu_page_first_chunk() |
||
|
Mathias Krause
|
4e9b45a192 |
ipc, msg: fix message length check for negative values
On 64 bit systems the test for negative message sizes is bogus as the
size, which may be positive when evaluated as a long, will get truncated
to an int when passed to load_msg(). So a long might very well contain a
positive value but when truncated to an int it would become negative.
That in combination with a small negative value of msg_ctlmax (which will
be promoted to an unsigned type for the comparison against msgsz, making
it a big positive value and therefore make it pass the check) will lead to
two problems: 1/ The kmalloc() call in alloc_msg() will allocate a too
small buffer as the addition of alen is effectively a subtraction. 2/ The
copy_from_user() call in load_msg() will first overflow the buffer with
userland data and then, when the userland access generates an access
violation, the fixup handler copy_user_handle_tail() will try to fill the
remainder with zeros -- roughly 4GB. That almost instantly results in a
system crash or reset.
,-[ Reproducer (needs to be run as root) ]--
| #include <sys/stat.h>
| #include <sys/msg.h>
| #include <unistd.h>
| #include <fcntl.h>
|
| int main(void) {
| long msg = 1;
| int fd;
|
| fd = open("/proc/sys/kernel/msgmax", O_WRONLY);
| write(fd, "-1", 2);
| close(fd);
|
| msgsnd(0, &msg, 0xfffffff0, IPC_NOWAIT);
|
| return 0;
| }
'---
Fix the issue by preventing msgsz from getting truncated by consistently
using size_t for the message length. This way the size checks in
do_msgsnd() could still be passed with a negative value for msg_ctlmax but
we would fail on the buffer allocation in that case and error out.
Also change the type of m_ts from int to size_t to avoid similar nastiness
in other code paths -- it is used in similar constructs, i.e. signed vs.
unsigned checks. It should never become negative under normal
circumstances, though.
Setting msg_ctlmax to a negative value is an odd configuration and should
be prevented. As that might break existing userland, it will be handled
in a separate commit so it could easily be reverted and reworked without
reintroducing the above described bug.
Hardening mechanisms for user copy operations would have catched that bug
early -- e.g. checking slab object sizes on user copy operations as the
usercopy feature of the PaX patch does. Or, for that matter, detect the
long vs. int sign change due to truncation, as the size overflow plugin
of the very same patch does.
[akpm@linux-foundation.org: fix i386 min() warnings]
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Pax Team <pageexec@freemail.hu>
Cc: Davidlohr Bueso <davidlohr@hp.com>
Cc: Brad Spengler <spender@grsecurity.net>
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: <stable@vger.kernel.org> [ v2.3.27+ -- yes, that old ;) ]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
||
|
Jan Kara
|
1310a5a99d |
rbtree: fix rbtree_postorder_for_each_entry_safe() iterator
The iterator rbtree_postorder_for_each_entry_safe() relies on pointer underflow behavior when testing for loop termination. In particular it expects that &rb_entry(NULL, type, field)->field is NULL. But the result of this expression is not defined by a C standard and some gcc versions (e.g. 4.3.4) assume the above expression can never be equal to NULL. The net result is an oops because the iteration is not properly terminated. Fix the problem by modifying the iterator to avoid pointer underflows. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com> Cc: Michel Lespinasse <walken@google.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Artem Bityutskiy <dedekind1@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Cc: Pablo Neira Ayuso <pablo@netfilter.org> Cc: Patrick McHardy <kaber@trash.net> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Theodore Ts'o <tytso@mit.edu> Cc: <stable@vger.kernel.org> [3.12.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Kees Cook
|
d049f74f2d |
exec/ptrace: fix get_dumpable() incorrect tests
The get_dumpable() return value is not boolean. Most users of the
function actually want to be testing for non-SUID_DUMP_USER(1) rather than
SUID_DUMP_DISABLE(0). The SUID_DUMP_ROOT(2) is also considered a
protected state. Almost all places did this correctly, excepting the two
places fixed in this patch.
Wrong logic:
if (dumpable == SUID_DUMP_DISABLE) { /* be protective */ }
or
if (dumpable == 0) { /* be protective */ }
or
if (!dumpable) { /* be protective */ }
Correct logic:
if (dumpable != SUID_DUMP_USER) { /* be protective */ }
or
if (dumpable != 1) { /* be protective */ }
Without this patch, if the system had set the sysctl fs/suid_dumpable=2, a
user was able to ptrace attach to processes that had dropped privileges to
that user. (This may have been partially mitigated if Yama was enabled.)
The macros have been moved into the file that declares get/set_dumpable(),
which means things like the ia64 code can see them too.
CVE-2013-2929
Reported-by: Vasily Kulikov <segoon@openwall.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
||
|
Sangbeom Kim
|
5bccae6ec4 |
rtc: s5m-rtc: add real-time clock driver for s5m8767
Add real-time clock driver for s5m8767. Signed-off-by: Sangbeom Kim <sbkim73@samsung.com> Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Cc: Todd Broch <tbroch@chromium.org> Cc: Mark Brown <broonie@kernel.org> Acked-by: Lee Jones <lee.jones@linaro.org> [mfd parts] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Geert Uytterhoeven
|
65321547c8 |
init.h: document the existence of __initconst
Initdata can be const since more than 5 years, using the __initconst keyword. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Oleg Nesterov
|
93be3c2eb3 |
list: introduce list_last_entry(), use list_{first,last}_entry()
We already have list_first_entry(), it makes sense to also add list_last_entry() for consistency. And we use both helpers in list_for_each_*(). Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: Eilon Greenstein <eilong@broadcom.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Oleg Nesterov
|
8120e2e514 |
list: change list_for_each_entry*() to use list_*_entry()
Now that we have list_{next,prev}_entry() we can change
list_for_each_entry*() and list_safe_reset_next() to use the new helpers
to improve the readability.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Eilon Greenstein <eilong@broadcom.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
||
|
Oleg Nesterov
|
008208c6b2 |
list: introduce list_next_entry() and list_prev_entry()
Add two trivial helpers list_next_entry() and list_prev_entry(), they can have a lot of users including list.h itself. In fact the 1st one is already defined in events/core.c and bnx2x_sp.c, so the patch simply moves the definition to list.h. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: Eilon Greenstein <eilong@broadcom.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Nicolin Chen
|
684f0d3d14 |
lib/genalloc: add a helper function for DMA buffer allocation
When using pool space for DMA buffer, there might be duplicated calling of gen_pool_alloc() and gen_pool_virt_to_phys() in each implementation. Thus it's better to add a simple helper function, a compatible one to the common dma_alloc_coherent(), to save some code. Signed-off-by: Nicolin Chen <b42378@freescale.com> Cc: "Hans J. Koch" <hjk@hansjkoch.de> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Eric Miao <eric.y.miao@gmail.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Haojian Zhuang <haojian.zhuang@gmail.com> Cc: Jaroslav Kysela <perex@perex.cz> Cc: Kevin Hilman <khilman@deeprootsystems.com> Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: Mark Brown <broonie@kernel.org> Cc: Mauro Carvalho Chehab <m.chehab@samsung.com> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Sekhar Nori <nsekhar@ti.com> Cc: Takashi Iwai <tiwai@suse.de> Cc: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Daniel Jeong
|
28e64a68a2 |
backlight: lm3630: apply chip revision
The LM3630 chip was revised by TI and chip name was also changed to
LM3630A. And register map, default values and initial sequences are
changed. The files, lm3630_bl.{c,h} are replaced by lm3630a_bl.{c,h} You
can find more information about LM3630A(datasheet, evm etc) at
http://www.ti.com/product/lm3630a
Signed-off-by: Daniel Jeong <gshark.jeong@gmail.com>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
||
|
Milo Kim
|
5812c13a4e |
backlight: lp855x_bl: support new LP8555 device
LP8555 is one of the LP855x family devices. This device needs pre_init_device() and post_init_device() driver structure. It's same as LP8557, so the device configuration code is shared with LP8557. Backlight outputs are generated from dual DC-DC boost converters. It's configurable EPROM settings which are defined in the platform data. Driver documentation and device tree bindings are updated. Signed-off-by: Milo Kim <milo.kim@ti.com> Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Vineet Gupta
|
27f69e68a5 |
sched: remove ARCH specific fpu_counter from task_struct
fpu_counter in task_struct was used only by sh/x86. Both of these now carry it in ARCH specific thread_struct, hence this can now be removed from generic task_struct, shrinking it slightly for other arches. Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Paul Mundt <paul.mundt@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Roel Kluin
|
261adc9a60 |
jump_label: unlikely(x) > 0
if (unlikely(x) > 0) doesn't seem to help branch prediction Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: "H. Peter Anvin" <hpa@linux.intel.com> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Andi Kleen
|
83460ec8dc |
syscalls.h: use gcc alias instead of assembler aliases for syscalls
Use standard gcc __attribute__((alias(foo))) to define the syscall aliases instead of custom assembler macros. This is far cleaner, and also fixes my LTO kernel build. Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Al Viro <viro@ZenIV.linux.org.uk> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Mel Gorman
|
72403b4a0f |
mm: numa: return the number of base pages altered by protection changes
Commit
|
||
|
Jerome Marchand
|
00619bcc44 |
mm: factor commit limit calculation
The same calculation is currently done in three differents places. Factor that code so future changes has to be made at only one place. [akpm@linux-foundation.org: uninline vm_commit_limit()] Signed-off-by: Jerome Marchand <jmarchan@redhat.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Michal Hocko <mhocko@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Tang Chen
|
79442ed189 |
mm/memblock.c: introduce bottom-up allocation mode
The Linux kernel cannot migrate pages used by the kernel. As a result, kernel pages cannot be hot-removed. So we cannot allocate hotpluggable memory for the kernel. ACPI SRAT (System Resource Affinity Table) contains the memory hotplug info. But before SRAT is parsed, memblock has already started to allocate memory for the kernel. So we need to prevent memblock from doing this. In a memory hotplug system, any numa node the kernel resides in should be unhotpluggable. And for a modern server, each node could have at least 16GB memory. So memory around the kernel image is highly likely unhotpluggable. So the basic idea is: Allocate memory from the end of the kernel image and to the higher memory. Since memory allocation before SRAT is parsed won't be too much, it could highly likely be in the same node with kernel image. The current memblock can only allocate memory top-down. So this patch introduces a new bottom-up allocation mode to allocate memory bottom-up. And later when we use this allocation direction to allocate memory, we will limit the start address above the kernel. Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com> Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Acked-by: Toshi Kani <toshi.kani@hp.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Tejun Heo <tj@kernel.org> Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com> Cc: Thomas Renninger <trenn@suse.de> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Jiang Liu <jiang.liu@huawei.com> Cc: Wen Congyang <wency@cn.fujitsu.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: Taku Izumi <izumi.taku@jp.fujitsu.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Michal Nazarewicz <mina86@mina86.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Rik van Riel <riel@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: 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> |
||
|
Jan Kara
|
c4a391b53a |
writeback: do not sync data dirtied after sync start
When there are processes heavily creating small files while sync(2) is
running, it can easily happen that quite some new files are created
between WB_SYNC_NONE and WB_SYNC_ALL pass of sync(2). That can happen
especially if there are several busy filesystems (remember that sync
traverses filesystems sequentially and waits in WB_SYNC_ALL phase on one
fs before starting it on another fs). Because WB_SYNC_ALL pass is slow
(e.g. causes a transaction commit and cache flush for each inode in
ext3), resulting sync(2) times are rather large.
The following script reproduces the problem:
function run_writers
{
for (( i = 0; i < 10; i++ )); do
mkdir $1/dir$i
for (( j = 0; j < 40000; j++ )); do
dd if=/dev/zero of=$1/dir$i/$j bs=4k count=4 &>/dev/null
done &
done
}
for dir in "$@"; do
run_writers $dir
done
sleep 40
time sync
Fix the problem by disregarding inodes dirtied after sync(2) was called
in the WB_SYNC_ALL pass. To allow for this, sync_inodes_sb() now takes
a time stamp when sync has started which is used for setting up work for
flusher threads.
To give some numbers, when above script is run on two ext4 filesystems
on simple SATA drive, the average sync time from 10 runs is 267.549
seconds with standard deviation 104.799426. With the patched kernel,
the average sync time from 10 runs is 2.995 seconds with standard
deviation 0.096.
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Fengguang Wu <fengguang.wu@intel.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
||
|
Naoya Horiguchi
|
46c77e2bb0 |
tools/vm/page-types.c: support KPF_SOFTDIRTY bit
Soft dirty bit allows us to track which pages are written since the last clear_ref (by "echo 4 > /proc/pid/clear_refs".) This is useful for userspace applications to know their memory footprints. Note that the kernel exposes this flag via bit[55] of /proc/pid/pagemap, and the semantics is not a default one (scheduled to be the default in the near future.) However, it shifts to the new semantics at the first clear_ref, and the users of soft dirty bit always do it before utilizing the bit, so that's not a big deal. Users must avoid relying on the bit in page-types before the first clear_ref. Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Cc: Pavel Emelyanov <xemul@parallels.com> Cc: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Zhang Yanfei
|
85b35feaec |
mm/sparsemem: use PAGES_PER_SECTION to remove redundant nr_pages parameter
For below functions, - sparse_add_one_section() - kmalloc_section_memmap() - __kmalloc_section_memmap() - __kfree_section_memmap() they are always invoked to operate on one memory section, so it is redundant to always pass a nr_pages parameter, which is the page numbers in one section. So we can directly use predefined macro PAGES_PER_SECTION instead of passing the parameter. Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Cc: Wen Congyang <wency@cn.fujitsu.com> Cc: Tang Chen <tangchen@cn.fujitsu.com> Cc: Toshi Kani <toshi.kani@hp.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Yasunori Goto <y-goto@jp.fujitsu.com> Cc: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
David Rientjes
|
948927ee9e |
mm, mempolicy: make mpol_to_str robust and always succeed
mpol_to_str() should not fail. Currently, it either fails because the string buffer is too small or because a string hasn't been defined for a mempolicy mode. If a new mempolicy mode is introduced and no string is defined for it, just warn and return "unknown". If the buffer is too small, just truncate the string and return, the same behavior as snprintf(). This also fixes a bug where there was no NULL-byte termination when doing *p++ = '=' and *p++ ':' and maxlen has been reached. Signed-off-by: David Rientjes <rientjes@google.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Chen Gang <gang.chen@asianux.com> Cc: Rik van Riel <riel@redhat.com> Cc: Dave Jones <davej@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Toshi Kani
|
01b0f19707 |
cpu/mem hotplug: add try_online_node() for cpu_up()
cpu_up() has #ifdef CONFIG_MEMORY_HOTPLUG code blocks, which call mem_online_node() to put its node online if offlined and then call build_all_zonelists() to initialize the zone list. These steps are specific to memory hotplug, and should be managed in mm/memory_hotplug.c. lock_memory_hotplug() should also be held for the whole steps. For this reason, this patch replaces mem_online_node() with try_online_node(), which performs the whole steps with lock_memory_hotplug() held. try_online_node() is named after try_offline_node() as they have similar purpose. There is no functional change in this patch. Signed-off-by: Toshi Kani <toshi.kani@hp.com> Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Qiang Huang
|
b9921ecdee |
mm: add a helper function to check may oom condition
Use helper function to check if we need to deal with oom condition. Signed-off-by: Qiang Huang <h.huangqiang@huawei.com> Acked-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Russell King
|
df762eccba |
Merge branch 'devel-stable' into for-next
Conflicts: arch/arm/include/asm/atomic.h arch/arm/include/asm/hardirq.h arch/arm/kernel/smp.c |
||
|
Russell King
|
ec1e20a02f | Merge branch 'misc' into for-next | ||
|
Linus Torvalds
|
10d0c9705e |
DeviceTree updates for 3.13. This is a bit larger pull request than
usual for this cycle with lots of clean-up.
- Cross arch clean-up and consolidation of early DT scanning code.
- Clean-up and removal of arch prom.h headers. Makes arch specific
prom.h optional on all but Sparc.
- Addition of interrupts-extended property for devices connected to
multiple interrupt controllers.
- Refactoring of DT interrupt parsing code in preparation for deferred
probe of interrupts.
- ARM cpu and cpu topology bindings documentation.
- Various DT vendor binding documentation updates.
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Merge tag 'devicetree-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree updates from Rob Herring:
"DeviceTree updates for 3.13. This is a bit larger pull request than
usual for this cycle with lots of clean-up.
- Cross arch clean-up and consolidation of early DT scanning code.
- Clean-up and removal of arch prom.h headers. Makes arch specific
prom.h optional on all but Sparc.
- Addition of interrupts-extended property for devices connected to
multiple interrupt controllers.
- Refactoring of DT interrupt parsing code in preparation for
deferred probe of interrupts.
- ARM cpu and cpu topology bindings documentation.
- Various DT vendor binding documentation updates"
* tag 'devicetree-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (82 commits)
powerpc: add missing explicit OF includes for ppc
dt/irq: add empty of_irq_count for !OF_IRQ
dt: disable self-tests for !OF_IRQ
of: irq: Fix interrupt-map entry matching
MIPS: Netlogic: replace early_init_devtree() call
of: Add Panasonic Corporation vendor prefix
of: Add Chunghwa Picture Tubes Ltd. vendor prefix
of: Add AU Optronics Corporation vendor prefix
of/irq: Fix potential buffer overflow
of/irq: Fix bug in interrupt parsing refactor.
of: set dma_mask to point to coherent_dma_mask
of: add vendor prefix for PHYTEC Messtechnik GmbH
DT: sort vendor-prefixes.txt
of: Add vendor prefix for Cadence
of: Add empty for_each_available_child_of_node() macro definition
arm/versatile: Fix versatile irq specifications.
of/irq: create interrupts-extended property
microblaze/pci: Drop PowerPC-ism from irq parsing
of/irq: Create of_irq_parse_and_map_pci() to consolidate arch code.
of/irq: Use irq_of_parse_and_map()
...
|
||
|
Linus Torvalds
|
85b656cf15 |
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds
Pull LED subsystem changes from Bryan Wu: "LED subsystem updates for 3.13 are basically cleanup and also add a new driver for PCA9685" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds: leds: lp55xx: handle enable pin in driver leds-gpio: of: led should not be created if its status is disabled of: introduce of_get_available_child_count leds: Added driver for the NXP PCA9685 I2C chip leds: pwm: Remove redundant of_match_ptr leds: Include linux/of.h header leds: dac124s085: Remove redundant spi_set_drvdata leds: lp55xx: enable setting default trigger leds: blinkm: Remove redundant break |
||
|
Linus Torvalds
|
2b684c073f |
The clock changes for 3.13 are an even mix of framework improvements &
bug fixes along with updates to existing clock drivers and the additional of new clock drivers. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAABAgAGBQJSgXEHAAoJEDqPOy9afJhJpp4P+gLir1FJsFiD9gK6UmRU2QZ6 zUBAyIyvuIOnXKRAPYD88C2d86ztaH0fMoyd3VBjrqCobS2ybTWCd0u28xsKEFZN 30GkvUYH+mOYaI73u9Q1onHH5qNpfvJAkv+dbXv+BWutzd4ygTjzB1dKSYRL3RtP 2YikqvWzvICJ+P5Med2YKDfE1BkEsA/BDCdynUOdABH4xSG+AI+/2P7TbHGz0bQC odyT4eh0uA5IlkeOtG8243ysM/u287bJnvBkFzQKkdcv1ZoNWyIytgfpSqldcYCv bf7OfgQPXqoIUqTlcjxbSyDxH1rBj0hHH2J4Hc+vlVixnu8in4XMjTEN8wJRqH94 W1wbxGM8v7fVj4OgJf//bjXWDZgr692o444ACvv3GHTT1RTD4WwBg9ouJ7faREeQ 06/tJsfgZ7bRaCLKWrdabGxgjUudj8vfGXjnL3DJjztEQEtp9lWuT84phU0kvcH/ JpxDfkxynZSbCHMHiOYAFP2bQjwCisU4vJrNo2jvYARVgGSfbkP9rncXaVjEMQVB 3gsJs9IRRCFTOVJiVVyWjWILPigDl96/pTDEEp33cvAOLHCLsa6RSYXnd+fY7h+W 0iNEuTTmZT3B3bTGMGx7c6beSppgiUFkvpH1KaKwnZI3d4TCutrPOwfzUFe8ULX+ LJzWqln7g/cRfQvmv0US =wBeW -----END PGP SIGNATURE----- Merge tag 'clk-for-linus-3.13' of git://git.linaro.org/people/mturquette/linux Pull clock framework changes from Mike Turquette: "The clock changes for 3.13 are an even mix of framework improvements & bug fixes along with updates to existing clock drivers and the additional of new clock drivers" * tag 'clk-for-linus-3.13' of git://git.linaro.org/people/mturquette/linux: clk: new driver for efm32 SoC clk: of: helper for determining number of parent clocks clk/zynq: Fix possible memory leak clk: keystone: Build Keystone clock drivers clk: keystone: Add gate control clock driver clk: keystone: add Keystone PLL clock driver Documentation: Add documentation for APM X-Gene clock binding clk: arm64: Add DTS clock entry for APM X-Gene Storm SoC clk: Add APM X-Gene SoC clock driver clk: wm831x: get rid of the implementation of remove function clk: Correct lookup logic in clk_fetch_parent_index() clk: Use kcalloc() to allocate arrays clk: Add error handling to clk_fetch_parent_index() |
||
|
Linus Torvalds
|
c2d3306991 |
GPIO bulk changes for the v3.13 development cycle
- Merged the GPIO descriptor API from Alexandre Courbot.
This is a first step toward trying to get rid of the
global GPIO numberspace for the future.
- Add an API so that driver can flag that a certain GPIO
line is being used by a irqchip backend for generating
IRQs, so that we can enforce checks, like not allowing
users to switch that line to an output at runtime, since
this makes no sense. Implemented corresponding calls
in a few select drivers.
- ACPI GPIO cleanups, refactorings and switch to using the
descriptor-based interface.
- Support for the TPS80036 Palmas GPIO variant.
- A new driver for the Broadcom Kona GPIO SoC IP block.
- Device tree support for the PCF857x driver.
- A set of ARM GPIO refactorings with the goal of getting
rid of a bunch of custom GPIO implementations from the
arch/arm/* tree:
- Move the IOP GPIO driver to the GPIO subsystem and
fix all users to use the gpiolib API for accessing
GPIOs. Delete the old custom GPIO implementation.
- Delete the unused custom PXA GPIO implemention.
- Convert all users of the IXP4 custom GPIO
implementation to use gpiolib and delete the custom
implementation.
- Delete the custom Gemini GPIO implementation, also
completely unused.
- Various cleanups and renamings.
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Merge tag 'gpio-v3.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO changes from Linus Walleij:
"Here is the bulk of GPIO changes for the v3.13 development cycle.
I've got ACKs for the things that affect other subsystems (or it's my
own subsystem, like pinctrl). Most of that pertain to an attempt from
my side to consolidate and get rid of custom GPIO implementations in
the ARM tree. I will continue doing this.
The main change this time is the new GPIO descriptor API, background
for this can be found in Corbet's summary from this january in LWN:
http://lwn.net/Articles/533632/
Summary:
- Merged the GPIO descriptor API from Alexandre Courbot. This is a
first step toward trying to get rid of the global GPIO numberspace
for the future.
- Add an API so that driver can flag that a certain GPIO line is
being used by a irqchip backend for generating IRQs, so that we can
enforce checks, like not allowing users to switch that line to an
output at runtime, since this makes no sense. Implemented
corresponding calls in a few select drivers.
- ACPI GPIO cleanups, refactorings and switch to using the
descriptor-based interface.
- Support for the TPS80036 Palmas GPIO variant.
- A new driver for the Broadcom Kona GPIO SoC IP block.
- Device tree support for the PCF857x driver.
- A set of ARM GPIO refactorings with the goal of getting rid of a
bunch of custom GPIO implementations from the arch/arm/* tree:
* Move the IOP GPIO driver to the GPIO subsystem and fix all users
to use the gpiolib API for accessing GPIOs. Delete the old
custom GPIO implementation.
* Delete the unused custom PXA GPIO implemention.
* Convert all users of the IXP4 custom GPIO implementation to use
gpiolib and delete the custom implementation.
* Delete the custom Gemini GPIO implementation, also completely
unused.
- Various cleanups and renamings"
* tag 'gpio-v3.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (85 commits)
gpio: gpio-mxs: Remove unneeded dt checks
gpio: pl061: don't depend on CONFIG_ARM
gpio: bcm-kona: add missing .owner to struct gpio_chip
gpiolib: provide a declaration of seq_file in gpio/driver.h
gpiolib: include gpio/consumer.h in of_gpio.h for desc_to_gpio()
gpio: provide stubs for devres gpio functions
gpiolib: devres: add missing headers
gpiolib: make GPIO_DEVRES depend on GPIOLIB
gpiolib: devres: fix devm_gpiod_get_index()
gpiolib / ACPI: document the GPIO descriptor based interface
gpiolib / ACPI: allow passing GPIOF_ACTIVE_LOW for GpioInt resources
gpiolib / ACPI: add ACPI support for gpiod_get_index()
gpiolib / ACPI: convert to gpiod interfaces
gpiolib: add gpiod_get() and gpiod_put() functions
gpiolib: port of_ functions to use gpiod
gpiolib: export descriptor-based GPIO interface
Fixup "MAINTAINERS: GPIO-INTEL-MID: add maintainer"
gpio: bcm281xx: Don't print addresses of GPIO area in probe()
gpio: tegra: use new gpio_lock_as_irq() API
gpio: rcar: Include linux/of.h header
...
|
||
|
Linus Torvalds
|
8a5dc585d5 |
Main pin control pull request for the v3.13 cycle:
- Blackfin ADI pin control driver, we move yet another
architecture under this subsystem umbrella.
- Incremental updates to the Renesas Super-H PFC pin control
driver. New subdriver for the r8a7791 SoC.
- Non-linear GPIO ranges from the gpiolib side of things,
this enabled simplified device tree bindings by referring
entire groups of pins on some pin controller to act as
back-end for a certain GPIO-chip driver.
- Add the Abilis TB10x pin control driver used on the ARC
architecture. Also the corresponding GPIO driver is merged
through this tree, so the ARC has full support for pins
and GPIOs after this.
- Subdrivers for Freescale i.MX1, i.MX27 and i.MX50 pin
controller instances. The i.MX1 and i.MX27 is an entirely
new family (silicon) of controllers whereas i.MX50 is
a variant of the previous supported controller.
- Then the usual slew of fixes, cleanups and incremental
updates.
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Merge tag 'pinctrl-for-v3.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control updates from Linus Walleij:
"Main pin control pull request for the v3.13 cycle.
The changes hitting arch/blackfin are ACKed by the Blackfin
maintainer, and the device tree bindings are ACKed to the extent
possible by someone from the device tree maintainers group.
- Blackfin ADI pin control driver, we move yet another architecture
under this subsystem umbrella.
- Incremental updates to the Renesas Super-H PFC pin control driver.
New subdriver for the r8a7791 SoC.
- Non-linear GPIO ranges from the gpiolib side of things, this
enabled simplified device tree bindings by referring entire groups
of pins on some pin controller to act as back-end for a certain
GPIO-chip driver.
- Add the Abilis TB10x pin control driver used on the ARC
architecture. Also the corresponding GPIO driver is merged through
this tree, so the ARC has full support for pins and GPIOs after
this.
- Subdrivers for Freescale i.MX1, i.MX27 and i.MX50 pin controller
instances. The i.MX1 and i.MX27 is an entirely new family
(silicon) of controllers whereas i.MX50 is a variant of the
previous supported controller.
- Then the usual slew of fixes, cleanups and incremental updates"
The ARC DT changes are apparently still pending, that hopefully gets
sorted out in a timely manner.
* tag 'pinctrl-for-v3.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (48 commits)
pinctrl: imx50: add pinctrl support code for the IMX50 SoC
pinctrl: at91: copy define to driver
pinctrl: remove minor dead code
pinctrl: imx: fix using pin->input_val wrongly
pinctrl: imx1: fix return value check in imx1_pinctrl_core_probe()
gpio: tb10x: fix return value check in tb10x_gpio_probe()
gpio: tb10x: use module_platform_driver to simplify the code
pinctrl: imx27: imx27 pincontrol driver
pinctrl: imx1 core driver
pinctrl: sh-pfc: r8a7791 PFC support
sh-pfc: r8a7778: Add CAN pin groups
gpio: add TB10x GPIO driver
pinctrl: at91: correct a few typos
pinctrl: mvebu: remove redundant of_match_ptr
pinctrl: tb10x: use module_platform_driver to simplify the code
pinctrl: tb10x: fix the error handling in tb10x_pinctrl_probe()
pinctrl: add documentation for pinctrl_get_group_pins()
pinctrl: rockchip: emulate both edge triggered interrupts
pinctrl: rockchip: add rk3188 specifics
pinctrl: rockchip: remove redundant check
...
|
||
|
Linus Torvalds
|
eeab517b68 |
sound updates for 3.13-rc1
There are no too intrusive changes in this update batch. The biggest
LOC is found in the new DICE driver, and other small changes are
scattered over the whole sound subtree (which is a common pattern).
Below are highlights:
- ALSA core:
* Memory allocation support with genpool
* Fix blocking in drain ioctl of compress_offload
- HD-audio:
* Improved AMD HDMI supports
* Intel HDMI detection improvements
* thinkpad_acpi mute-key integration
* New PCI ID, New ALC255,285,293 codecs, CX20952
- USB-audio:
* New buffer size management
* Clean up endpoint handling codes
- ASoC:
* Further work on the dmaengine helpers, including support for
configuring the parameters for DMA by reading the capabilities of
the DMA controller which removes some guesswork and magic numbers
from drivers.
* A refresh of the documentation.
* Conversions of many drivers to direct regmap API usage in order to
allow the ASoC level register I/O code to be removed, this will
hopefully be completed by v3.14.
* Support for using async register I/O in DAPM, reducing the time
taken to implement power transitions on systems that support it.
- Fireiwre: DICE driver
- Lots of small fixes for bugs reported by Coverity
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Merge tag 'sound-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"There are no too intrusive changes in this update batch. The biggest
LOC is found in the new DICE driver, and other small changes are
scattered over the whole sound subtree (which is a common pattern).
Below are highlights:
- ALSA core:
* Memory allocation support with genpool
* Fix blocking in drain ioctl of compress_offload
- HD-audio:
* Improved AMD HDMI supports
* Intel HDMI detection improvements
* thinkpad_acpi mute-key integration
* New PCI ID, New ALC255,285,293 codecs, CX20952
- USB-audio:
* New buffer size management
* Clean up endpoint handling codes
- ASoC:
* Further work on the dmaengine helpers, including support for
configuring the parameters for DMA by reading the capabilities of
the DMA controller which removes some guesswork and magic numbers
from drivers.
* A refresh of the documentation.
* Conversions of many drivers to direct regmap API usage in order
to allow the ASoC level register I/O code to be removed, this
will hopefully be completed by v3.14.
* Support for using async register I/O in DAPM, reducing the time
taken to implement power transitions on systems that support it.
- Firewire: DICE driver
- Lots of small fixes for bugs reported by Coverity"
* tag 'sound-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (382 commits)
ALSA: hda/realtek - Add new codec ALC255/ALC3234 UAJ supported
ALSA: hda - Apply MacBook fixups for CS4208 correctly
ASoC: fsl: imx-wm8962: remove an unneeded check
ASoC: fsl: imx-pcm-fiq: Remove unused 'runtime' variable
ALSA: hda/realtek - Make fixup regs persist after resume
ALSA: hda_intel: ratelimit "spurious response" message
ASoC: generic-dmaengine-pcm: Use SNDRV_DMA_TYPE_DEV_IRAM as default
ASoC: dapm: Use WARN_ON() instead of BUG_ON()
ASoC: wm_adsp: Fix BUG_ON() and WARN_ON() usages
ASoC: Replace BUG() with WARN()
ASoC: wm_hubs: Replace BUG() with WARN()
ASoC: wm8996: Replace BUG() with WARN()
ASoC: wm8962: Replace BUG() with WARN()
ASoC: wm8958: Replace BUG() with WARN()
ASoC: wm8904: Replace BUG() with WARN()
ASoC: wm8900: Replace BUG() with WARN()
ASoC: wm8350: Replace BUG() with WARN()
ASoC: txx9: Use WARN_ON() instead of BUG_ON()
ASoC: sh: Use WARN_ON() instead of BUG_ON()
ASoC: rcar: Use WARN_ON() instead of BUG_ON()
...
|
||
|
Linus Torvalds
|
f095ca6b31 |
spi: Updates for v3.13
As well as the usual driver updates and cleanups there's a few
improvements to the core here:
- The start of some improvements to factor out more of the SPI message
loop into the core. Right now this is just simplifying the code a
bit but hopefully next time around we'll also have managed to roll
out some noticable performance improvements which drivers can take
advantage of.
- Support for loading modules for ACPI enumerated SPI devices.
- Managed registration for SPI controllers.
- Helper for another common I/O pattern.
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Merge tag 'spi-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"As well as the usual driver updates and cleanups there's a few
improvements to the core here:
- The start of some improvements to factor out more of the SPI
message loop into the core. Right now this is just simplifying the
code a bit but hopefully next time around we'll also have managed
to roll out some noticable performance improvements which drivers
can take advantage of.
- Support for loading modules for ACPI enumerated SPI devices.
- Managed registration for SPI controllers.
- Helper for another common I/O pattern"
* tag 'spi-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (116 commits)
spi/hspi: add device tree support
spi: atmel: fix return value check in atmel_spi_probe()
spi: spi-imx: only enable the clocks when we start to transfer a message
spi/s3c64xx: Fix doubled clock disable on suspend
spi/s3c64xx: Do not ignore return value of spi_master_resume/suspend
spi: spi-mxs: Use u32 instead of uint32_t
spi: spi-mxs: Don't set clock for each xfer
spi: spi-mxs: Clean up setup_transfer function
spi: spi-mxs: Remove check of spi mode bits
spi: spi-mxs: Fix race in setup method
spi: spi-mxs: Remove bogus setting of ssp clk rate field
spi: spi-mxs: Remove full duplex check, spi core already does it
spi: spi-mxs: Fix chip select control bits in DMA mode
spi: spi-mxs: Fix extra CS pulses and read mode in multi-transfer messages
spi: spi-mxs: Change flag arguments in txrx functions to bit flags
spi: spi-mxs: Always clear INGORE_CRC, to keep CS asserted
spi: spi-mxs: Remove mxs_spi_enable and mxs_spi_disable
spi: spi-mxs: Always set LOCK_CS
spi/s3c64xx: Add missing pm_runtime_put on setup fail
spi/s3c64xx: Add missing pm_runtime_set_active() call in probe()
...
|
||
|
Linus Torvalds
|
c6d65bf246 |
regulator: Updates for v3.13
Lots of driver updates here plus some nice new core features, the main
one being the first:
- Enable support for providing a dummy regulator when we know that one
must exist for the device to be functional. This makes it much
easier to add regulator support to drivers since we don't require
that the machine integration for all systems using the device be
updated to provide regulators.
- Substantial reduction in the amount of busy waiting done while
waiting for enables to complete.
- Allow MFDs to distribute regulator supplies to child devices so we
don't have to expose the internal structure of MFDs outside of the
driver.
- Managed registeration for regulators.
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Merge tag 'regulator-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator updates from Mark Brown:
"Lots of driver updates here plus some nice new core features, the main
one being the first:
- Enable support for providing a dummy regulator when we know that
one must exist for the device to be functional. This makes it much
easier to add regulator support to drivers since we don't require
that the machine integration for all systems using the device be
updated to provide regulators.
- Substantial reduction in the amount of busy waiting done while
waiting for enables to complete.
- Allow MFDs to distribute regulator supplies to child devices so we
don't have to expose the internal structure of MFDs outside of the
driver.
- Managed registeration for regulators"
* tag 'regulator-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (113 commits)
regulator: s5m8767: Modify parsing method of the voltage table of buck2/3/4
regulator: s5m8767: Modify parse_dt function to parse data related to ramp
regulator: da9052: Revert se apply_[reg|bit] with regmap based voltage_sel operations
mfd: arizona: Specify supply mappings for Arizona CODECs
mfd: Allow mapping regulator supplies to MFD device from children
regulator: core: Add ability to create a lookup alias for supply
regulator: tps65910: Fix checkpatch issue
regulator: tps65023: Fix checkpatch issue
regulator: tps6105x: Fix checkpatch issue
regulator: mc13783: Fix checkpatch issue
regulator: max8997: Fix checkpatch issue
regulator: lp3971: Fix checkpatch issue
regulator: fixed: Fix checkpatch issue
regulator: anatop: Fix checkpatch issue
regulator: Add REGULATOR_LINEAR_RANGE macro
regulator: Remove max_uV from struct regulator_linear_range
regulator: ti-abb: Fix operator precedence typo
regulator: tps65910: get regulators node from parent node only
regulator: tps6586x: get regulators node from parent node only
regulator: tps65090: get regulators node from parent node only
...
|
||
|
Linus Torvalds
|
4fc9ed3344 |
regmap: Updates for v3.13
The main thing this time around has been some improvments to async I/O.
- Cleaned up the async I/O support and extended it to allow single
register writes more easily. This is now used where possible for
internally generated I/O, providing performance improvements for
devices that can do async I/O.
- An API for issuing a sequence of register writes as a single
operation. Some devices and buses can take advantage of this to
do the I/O faster.
- Addition of regmap_field APIs which help drivers for devices with
repeated IPs or which move registers around between revisions to
share helpers.
- Support for SPMI buses.
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Merge tag 'regmap-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap updates from Mark Brown:
"The main thing this time around has been some improvments to async
I/O.
- Cleaned up the async I/O support and extended it to allow single
register writes more easily. This is now used where possible for
internally generated I/O, providing performance improvements for
devices that can do async I/O.
- An API for issuing a sequence of register writes as a single
operation. Some devices and buses can take advantage of this to do
the I/O faster.
- Addition of regmap_field APIs which help drivers for devices with
repeated IPs or which move registers around between revisions to
share helpers.
- Support for SPMI buses"
* tag 'regmap-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: add SPMI support
regmap: debugfs: Fix a boot time crash with early regmap init
regmap: irq: clear status when disable irq
regmap: Only send a single buffer for async I/O if writing one register
regmap: spi: Handle async writes of only one buffer
regmap: new API regmap_multi_reg_write() definition
regmap: Use async I/O during cache sync
regmap: Use async I/O for patch application
regmap: Fix regmap_bulk_write single-rw mutex deadlock
regmap: Provide asynchronous write and update bits operations
regmap: Simplify the initiation of async I/O
regmap: Don't generate gather writes for single register raw writes
regmap: Cache async work structures
regmap: add helper macro to set min/max range of register
regmap: Add regmap_fields APIs
regmap: add regmap_field_update_bits()
|
||
|
Linus Torvalds
|
7e238a2ecd |
hwmon updates for 3.13-rc1
Introduce new hwmon API functions hwmon_device_register_with_groups and devm_hwmon_device_register_with_groups, and convert several drivers to use the new API. Add support for EMC1404, EMC1424, LTC2977, LTC2978A, LM25063 to exiting drivers Various cleanups in several drivers -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAABAgAGBQJSex4PAAoJEMsfJm/On5mBVxcP/2BQMEBJppOEU6QSS1IpY2GC 9i2NW3QFPSa/2VIMY1E9PY1YNIfdHv4LZE62V+CQdmgK5soNEZtwpzFhTMrphaRI ET3kn0YmWkHYFq2VKguJPRzM3wUGq/Bt+FTF0ONKM+vl0qoxwEkDUDSBFw/zZsjv gDa+cUjVQ5E5axZ8y4u2Sf0B4l+7FXJbyVXQuHQ4a6sgwp9IVDX1MTFdb0Ih1wj9 SxGX1msZTFHRHG849NZa7msIKz/TMabaIPJQwBCb3Vh+VQtr/zmQfxTlbEDiU0WY I3BEH7td5OOdLxuuvn24IDlgd7eA9wCj0P1Rtur/ucvWeDrIaweUBri7h5qO2cbX CEc7MISeggEAszcxM7QQ2oiuy9SrDB9swNC41WbGrrMX3elmMUmI0m70RXukN/Vs uTMomKekrb6LuXUyl0x0k2hkin56rXKoNGi7oTCjMS8/IriCI2Dne1WmQnr5oOMR ImawiNuvEw79eHYJYdnXFdQfIgAm7yWWVOxQxDI3eO6HwNWzZ2oohsBKmSLUvJ7Q cfijyCuXm0TWHdGiWz7ResMEZ0oxibsWB8tym5bJM2GSJrX99t0Qj9nSN8y9mwJy FGraTnxwXZxIAamZBVRsfO/j7cUGi75yKhyKjMr81OCOSCkynGeU3in1DST0ImN1 e1XRv2z5+d95f1uXlYWu =+bF4 -----END PGP SIGNATURE----- Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull hwmon updates from Guenter Roeck: "Introduce new hwmon API functions hwmon_device_register_with_groups and devm_hwmon_device_register_with_groups, and convert several drivers to use the new API. Add support for EMC1404, EMC1424, LTC2977, LTC2978A, LM25063 to existing drivers Various cleanups in several drivers" * tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (49 commits) hwmon: (w83793) Clean up a signedness issue hwmon: (nct6775) Remove an unused variable hwmon: (emc1403) Add support for EMC1404 and EMC1424 hwmon: (emc1403) Convert to use devm_hwmon_device_register_with_groups hwmon: (pmbus/ltc2978): Add support for LTC2978A hwmon: (pmbus/ltc2978): Add support for LTC2977 hwmon: (pmbus/lm25066) Add support for LM25063 hwmon: Correct some typos hwmon: (gpio-fan) Include linux/of.h header hwmon: (lm70) Remove redundant spi_set_drvdata hwmon: (adcxx) Remove redundant spi_set_drvdata hwmon: (jc42) fix coccinelle warnings hwmon: (ltc4261) fix coccinelle warnings hwmon: (lm95234) fix coccinelle warnings hwmon: (max6697) fix coccinelle warnings hwmon: (max6642 fix coccinelle warnings hwmon: (ds1621) fix coccinelle warnings hwmon: (nct6775) fix coccinelle warnings hwmon: (jc42) Convert to use devm_hwmon_device_register_with_groups hwmon: (ltc4261) Convert to use devm_hwmon_device_register_with_groups ... |
||
|
Linus Torvalds
|
66a173b926 |
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc updates from Benjamin Herrenschmidt: "The bulk of this is LE updates. One should now be able to build an LE kernel and even run some things in it. I'm still sitting on a handful of patches to enable the new ABI that I *might* still send this merge window around, but due to the incertainty (they are pretty fresh) I want to keep them separate. Other notable changes are some infrastructure bits to better handle PCI pass-through under KVM, some bits and pieces added to the new PowerNV platform support such as access to the CPU SCOM bus via sysfs, and support for EEH error handling on PHB3 (Power8 PCIe). We also grew arch_get_random_long() for both pseries and powernv when running on P7+ and P8, exploiting the HW rng. And finally various embedded updates from freescale" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (154 commits) powerpc: Fix fatal SLB miss when restoring PPR powerpc/powernv: Reserve the correct PE number powerpc/powernv: Add PE to its own PELTV powerpc/powernv: Add support for indirect XSCOM via debugfs powerpc/scom: Improve debugfs interface powerpc/scom: Enable 64-bit addresses powerpc/boot: Properly handle the base "of" boot wrapper powerpc/bpf: Support MOD operation powerpc/bpf: Fix DIVWU instruction opcode of: Move definition of of_find_next_cache_node into common code. powerpc: Remove big endianness assumption in of_find_next_cache_node powerpc/tm: Remove interrupt disable in __switch_to() powerpc: word-at-a-time optimization for 64-bit Little Endian powerpc/bpf: BPF JIT compiler for 64-bit Little Endian powerpc: Only save/restore SDR1 if in hypervisor mode powerpc/pmu: Fix ADB_PMU_LED_IDE dependencies powerpc/nvram: Fix endian issue when using the partition length powerpc/nvram: Fix endian issue when reading the NVRAM size powerpc/nvram: Scan partitions only once powerpc/mpc512x: remove unnecessary #if ... |
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Linus Torvalds
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4b4d2b4634 |
H8/300 has been dead for several years, the kernel for it has
not compiled for ages, and recent versions of gcc for it are broken. Remove support for it. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAABAgAGBQJSev31AAoJEMsfJm/On5mBzSAQAKRBYLqtf3nJGm9pXGDhZPGG 7KSQ8S11pg/wnXYW6P/XJhFRBrYkOOCeqVKQHtmxG8MmXQkkOz95rsIvBbUzU/FT yJAPKpOHdh1yLhBGgCj3WhGtjVwpbut1/y9n2M5SpGautUgxfLj9fJiswSJx0n7t VRWKwfIpBFPLPs9w6hdDf94tIXhSX8Me2gd3LDCPBEQ2SZYd8rtBasYtDeC2+FLa Xow4ZQrCU7hpYscSUFzJpok35hl7weGhJ9jjXwtic4byFHvdiyHUwCOaEWC0hqNi fOLWFbvBogqjyAktfZhfyL9R9/7lGlLshLQNmJWR3bO+nCJ21h9ATw0R4gLBdT4/ lzLRnJ/4GdtbvmdqRxNjxxR4zHkZ+tE8HmaCmUzvqGfQyA5sJNBRrBDcWLUOVlO9 0iIZsJBZjSQXKXSk9P5xH4G0tlbAFEUnEHKsrt/mgsD9Z3SgbPKAIWSBAJA0AMQk DXZaXrBRilXOPUCZASZfmK8AQFC1GYB0tz7nT4x1mjT2/JClgG2kHCAGhNmI+CbK l9VRIgBydppLFPOGhZLSNGQp29xBhw9JgOVns4a1k7kJQEw9ht38h8Q2ckRYxXhP /z53eZKMQk62quWlyLRgR9mWqZc2CIifLVdFjiOELMh7wKPwL6eGrrrGBDbPtctS PX5K26geb0oA3ZMjpBLr =V6n6 -----END PGP SIGNATURE----- Merge tag 'h8300-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull h8300 platform removal from Guenter Roeck: "The patch series has been in -next for more than one relase cycle. I did get a number of Acks, and no objections. H8/300 has been dead for several years, the kernel for it has not compiled for ages, and recent versions of gcc for it are broken. Remove support for it" * tag 'h8300-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: CREDITS: Add Yoshinori Sato for h8300 fs/minix: Drop dependency on H8300 Drop remaining references to H8/300 architecture Drop MAINTAINERS entry for H8/300 watchdog: Drop references to H8300 architecture net/ethernet: Drop H8/300 Ethernet driver net/ethernet: smsc9194: Drop conditional code for H8/300 ide: Drop H8/300 driver Drop support for Renesas H8/300 (h8300) architecture |
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Linus Torvalds
|
9b66bfb280 |
Merge branch 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 UV debug changes from Ingo Molnar: "Various SGI UV debuggability improvements, amongst them KDB support, with related core KDB enabling patches changing kernel/debug/kdb/" * 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: Revert "x86/UV: Add uvtrace support" x86/UV: Add call to KGDB/KDB from NMI handler kdb: Add support for external NMI handler to call KGDB/KDB x86/UV: Check for alloc_cpumask_var() failures properly in uv_nmi_setup() x86/UV: Add uvtrace support x86/UV: Add kdump to UV NMI handler x86/UV: Add summary of cpu activity to UV NMI handler x86/UV: Update UV support for external NMI signals x86/UV: Move NMI support |
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Linus Torvalds
|
340286cd4e |
Merge branch 'x86-mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 RAS changes from Ingo Molnar:
"The biggest change adds support for Intel 'CPER' (UEFI Common Platform
Error Record) error logging, which builds upon an enhanced error
logging mechanism available on Xeon processors.
Full description is here:
http://www.intel.com/content/www/us/en/architecture-and-technology/enhanced-mca-logging-xeon-paper.html
This change provides a module (and support code) to check for an
extended error log and prints extra details about the error on the
console"
* 'x86-mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
ACPI, x86: Fix extended error log driver to depend on CONFIG_X86_LOCAL_APIC
dmi: Avoid unaligned memory access in save_mem_devices()
Move cper.c from drivers/acpi/apei to drivers/firmware/efi
EDAC, GHES: Update ghes error record info
ACPI, APEI, CPER: Cleanup CPER memory error output format
ACPI, APEI, CPER: Enhance memory reporting capability
ACPI, APEI, CPER: Add UEFI 2.4 support for memory error
DMI: Parse memory device (type 17) in SMBIOS
ACPI, x86: Extended error log driver for x86 platform
bitops: Introduce a more generic BITMASK macro
ACPI, CPER: Update cper info
ACPI, APEI, CPER: Fix status check during error printing
|
||
|
Linus Torvalds
|
dba538ff56 |
Merge branch 'x86-intel-mid-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86/intel-mid changes from Ingo Molnar: "Update the 'intel mid' (mobile internet device) platform code as Intel is rolling out more SoC designs. This gets rid of most of the 'MRST' platform code in the process, mostly by renaming and shuffling code around into their respective 'intel-mid' platform drivers" * 'x86-intel-mid-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, intel-mid: Do not re-introduce usage of obsolete __cpuinit intel_mid: Move platform device setups to their own platform_<device>.* files x86: intel-mid: Add section for sfi device table intel-mid: sfi: Allow struct devs_id.get_platform_data to be NULL intel_mid: Moved SFI related code to sfi.c intel_mid: Added custom handler for ipc devices intel_mid: Added custom device_handler support intel_mid: Refactored sfi_parse_devs() function intel_mid: Renamed *mrst* to *intel_mid* pci: intel_mid: Return true/false in function returning bool intel_mid: Renamed *mrst* to *intel_mid* mrst: Fixed indentation issues mrst: Fixed printk/pr_* related issues |
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|
Linus Torvalds
|
69019d77c7 |
Merge branch 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 EFI changes from Ingo Molnar:
"Main changes:
- Add support for earlyprintk=efi which uses the EFI framebuffer.
Very useful for debugging boot problems.
- EFI stub support for large memory maps (more than 128 entries)
- EFI ARM support - this was mostly done by generalizing x86 <-> ARM
platform differences, such as by moving x86 EFI code into
drivers/firmware/efi/ and sharing it with ARM.
- Documentation updates
- misc fixes"
* 'x86-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (26 commits)
x86/efi: Add EFI framebuffer earlyprintk support
boot, efi: Remove redundant memset()
x86/efi: Fix config_table_type array termination
x86 efi: bugfix interrupt disabling sequence
x86: EFI stub support for large memory maps
efi: resolve warnings found on ARM compile
efi: Fix types in EFI calls to match EFI function definitions.
efi: Renames in handle_cmdline_files() to complete generalization.
efi: Generalize handle_ramdisks() and rename to handle_cmdline_files().
efi: Allow efi_free() to be called with size of 0
efi: use efi_get_memory_map() to get final map for x86
efi: generalize efi_get_memory_map()
efi: Rename __get_map() to efi_get_memory_map()
efi: Move unicode to ASCII conversion to shared function.
efi: Generalize relocate_kernel() for use by other architectures.
efi: Move relocate_kernel() to shared file.
efi: Enforce minimum alignment of 1 page on allocations.
efi: Rename memory allocation/free functions
efi: Add system table pointer argument to shared functions.
efi: Move common EFI stub code from x86 arch code to common location
...
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Linus Torvalds
|
87093826aa |
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer changes from Ingo Molnar:
"Main changes in this cycle were:
- Updated full dynticks support.
- Event stream support for architected (ARM) timers.
- ARM clocksource driver updates.
- Move arm64 to using the generic sched_clock framework & resulting
cleanup in the generic sched_clock code.
- Misc fixes and cleanups"
* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (50 commits)
x86/time: Honor ACPI FADT flag indicating absence of a CMOS RTC
clocksource: sun4i: remove IRQF_DISABLED
clocksource: sun4i: Report the minimum tick that we can program
clocksource: sun4i: Select CLKSRC_MMIO
clocksource: Provide timekeeping for efm32 SoCs
clocksource: em_sti: convert to clk_prepare/unprepare
time: Fix signedness bug in sysfs_get_uname() and its callers
timekeeping: Fix some trivial typos in comments
alarmtimer: return EINVAL instead of ENOTSUPP if rtcdev doesn't exist
clocksource: arch_timer: Do not register arch_sys_counter twice
timer stats: Add a 'Collection: active/inactive' line to timer usage statistics
sched_clock: Remove sched_clock_func() hook
arch_timer: Move to generic sched_clock framework
clocksource: tcb_clksrc: Remove IRQF_DISABLED
clocksource: tcb_clksrc: Improve driver robustness
clocksource: tcb_clksrc: Replace clk_enable/disable with clk_prepare_enable/disable_unprepare
clocksource: arm_arch_timer: Use clocksource for suspend timekeeping
clocksource: dw_apb_timer_of: Mark a few more functions as __init
clocksource: Put nodes passed to CLOCKSOURCE_OF_DECLARE callbacks centrally
arm: zynq: Enable arm_global_timer
...
|
||
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Linus Torvalds
|
39cf275a1a |
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler changes from Ingo Molnar:
"The main changes in this cycle are:
- (much) improved CONFIG_NUMA_BALANCING support from Mel Gorman, Rik
van Riel, Peter Zijlstra et al. Yay!
- optimize preemption counter handling: merge the NEED_RESCHED flag
into the preempt_count variable, by Peter Zijlstra.
- wait.h fixes and code reorganization from Peter Zijlstra
- cfs_bandwidth fixes from Ben Segall
- SMP load-balancer cleanups from Peter Zijstra
- idle balancer improvements from Jason Low
- other fixes and cleanups"
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (129 commits)
ftrace, sched: Add TRACE_FLAG_PREEMPT_RESCHED
stop_machine: Fix race between stop_two_cpus() and stop_cpus()
sched: Remove unnecessary iteration over sched domains to update nr_busy_cpus
sched: Fix asymmetric scheduling for POWER7
sched: Move completion code from core.c to completion.c
sched: Move wait code from core.c to wait.c
sched: Move wait.c into kernel/sched/
sched/wait: Fix __wait_event_interruptible_lock_irq_timeout()
sched: Avoid throttle_cfs_rq() racing with period_timer stopping
sched: Guarantee new group-entities always have weight
sched: Fix hrtimer_cancel()/rq->lock deadlock
sched: Fix cfs_bandwidth misuse of hrtimer_expires_remaining
sched: Fix race on toggling cfs_bandwidth_used
sched: Remove extra put_online_cpus() inside sched_setaffinity()
sched/rt: Fix task_tick_rt() comment
sched/wait: Fix build breakage
sched/wait: Introduce prepare_to_wait_event()
sched/wait: Add ___wait_cond_timeout() to wait_event*_timeout() too
sched: Remove get_online_cpus() usage
sched: Fix race in migrate_swap_stop()
...
|
||
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Linus Torvalds
|
ad5d69899e |
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar:
"As a first remark I'd like to note that the way to build perf tooling
has been simplified and sped up, in the future it should be enough for
you to build perf via:
cd tools/perf/
make install
(ie without the -j option.) The build system will figure out the
number of CPUs and will do a parallel build+install.
The various build system inefficiencies and breakages Linus reported
against the v3.12 pull request should now be resolved - please
(re-)report any remaining annoyances or bugs.
Main changes on the perf kernel side:
* Performance optimizations:
. perf ring-buffer code optimizations, by Peter Zijlstra
. perf ring-buffer code optimizations, by Oleg Nesterov
. x86 NMI call-stack processing optimizations, by Peter Zijlstra
. perf context-switch optimizations, by Peter Zijlstra
. perf sampling speedups, by Peter Zijlstra
. x86 Intel PEBS processing speedups, by Peter Zijlstra
* Enhanced hardware support:
. for Intel Ivy Bridge-EP uncore PMUs, by Zheng Yan
. for Haswell transactions, by Andi Kleen, Peter Zijlstra
* Core perf events code enhancements and fixes by Oleg Nesterov:
. for uprobes, if fork() is called with pending ret-probes
. for uprobes platform support code
* New ABI details by Andi Kleen:
. Report x86 Haswell TSX transaction abort cost as weight
Main changes on the perf tooling side (some of these tooling changes
utilize the above kernel side changes):
* 'perf report/top' enhancements:
. Convert callchain children list to rbtree, greatly reducing the
time taken for callchain processing, from Namhyung Kim.
. Add new COMM infrastructure, further improving histogram
processing, from Frédéric Weisbecker, one fix from Namhyung Kim.
. Add /proc/kcore based live-annotation improvements, including
build-id cache support, multi map 'call' instruction navigation
fixes, kcore address validation, objdump workarounds. From
Adrian Hunter.
. Show progress on histogram collapsing, that can take a long
time, from Namhyung Kim.
. Add --max-stack option to limit callchain stack scan in 'top'
and 'report', improving callchain processing when reducing the
stack depth is an option, from Waiman Long.
. Add new option --ignore-vmlinux for perf top, from Willy
Tarreau.
* 'perf trace' enhancements:
. 'perf trace' now can can use a 'perf probe' dynamic tracepoints
to hook into the userspace -> kernel pathname copy so that it
can map fds to pathnames without reading /proc/pid/fd/ symlinks.
From Arnaldo Carvalho de Melo.
. Show VFS path associated with fd in live sessions, using a
'vfs_getname' 'perf probe' created dynamic tracepoint or by
looking at /proc/pid/fd, from Arnaldo Carvalho de Melo.
. Add 'trace' beautifiers for lots of syscall arguments, from
Arnaldo Carvalho de Melo.
. Implement more compact 'trace' output by suppressing zeroed
args, from Arnaldo Carvalho de Melo.
. Show thread COMM by default in 'trace', from Arnaldo Carvalho de
Melo.
. Add option to show full timestamp in 'trace', from David Ahern.
. Add 'record' command in 'trace', to record raw_syscalls:*, from
David Ahern.
. Add summary option to dump syscall statistics in 'trace', from
David Ahern.
. Improve error messages in 'trace', providing hints about system
configuration steps needed for using it, from Ramkumar
Ramachandra.
. 'perf trace' now emits hints as to why tracing is not possible,
helping the user to setup the system to allow tracing in the
desired permission granularity, telling if the problem is due to
debugfs not being mounted or with not enough permission for
!root, /proc/sys/kernel/perf_event_paranoit value, etc. From
Arnaldo Carvalho de Melo.
* 'perf record' enhancements:
. Check maximum frequency rate for record/top, emitting better
error messages, from Jiri Olsa.
. 'perf record' code cleanups, from David Ahern.
. Improve write_output error message in 'perf record', from Adrian
Hunter.
. Allow specifying B/K/M/G unit to the --mmap-pages arguments,
from Jiri Olsa.
. Fix command line callchain attribute tests to handle the new
-g/--call-chain semantics, from Arnaldo Carvalho de Melo.
* 'perf kvm' enhancements:
. Disable live kvm command if timerfd is not supported, from David
Ahern.
. Fix detection of non-core features, from David Ahern.
* 'perf list' enhancements:
. Add usage to 'perf list', from David Ahern.
. Show error in 'perf list' if tracepoints not available, from
Pekka Enberg.
* 'perf probe' enhancements:
. Support "$vars" meta argument syntax for local variables,
allowing asking for all possible variables at a given probe
point to be collected when it hits, from Masami Hiramatsu.
* 'perf sched' enhancements:
. Address the root cause of that 'perf sched' stack initialization
build slowdown, by programmatically setting a big array after
moving the global variable back to the stack. Fix from Adrian
Hunter.
* 'perf script' enhancements:
. Set up output options for in-stream attributes, from Adrian
Hunter.
. Print addr by default for BTS in 'perf script', from Adrian
Juntmer
* 'perf stat' enhancements:
. Improved messages when doing profiling in all or a subset of
CPUs using a workload as the session delimitator, as in:
'perf stat --cpu 0,2 sleep 10s'
from Arnaldo Carvalho de Melo.
. Add units to nanosec-based counters in 'perf stat', from David
Ahern.
. Remove bogus info when using 'perf stat' -e cycles/instructions,
from Ramkumar Ramachandra.
* 'perf lock' enhancements:
. 'perf lock' fixes and cleanups, from Davidlohr Bueso.
* 'perf test' enhancements:
. Fixup PERF_SAMPLE_TRANSACTION handling in sample synthesizing
and 'perf test', from Adrian Hunter.
. Clarify the "sample parsing" test entry, from Arnaldo Carvalho
de Melo.
. Consider PERF_SAMPLE_TRANSACTION in the "sample parsing" test,
from Arnaldo Carvalho de Melo.
. Memory leak fixes in 'perf test', from Felipe Pena.
* 'perf bench' enhancements:
. Change the procps visible command-name of invididual benchmark
tests plus cleanups, from Ingo Molnar.
* Generic perf tooling infrastructure/plumbing changes:
. Separating data file properties from session, code
reorganization from Jiri Olsa.
. Fix version when building out of tree, as when using one of
these:
$ make help | grep perf
perf-tar-src-pkg - Build perf-3.12.0.tar source tarball
perf-targz-src-pkg - Build perf-3.12.0.tar.gz source tarball
perf-tarbz2-src-pkg - Build perf-3.12.0.tar.bz2 source tarball
perf-tarxz-src-pkg - Build perf-3.12.0.tar.xz source tarball
$
from David Ahern.
. Enhance option parse error message, showing just the help lines
of the options affected, from Namhyung Kim.
. libtraceevent updates from upstream trace-cmd repo, from Steven
Rostedt.
. Always use perf_evsel__set_sample_bit to set sample_type, from
Adrian Hunter.
. Memory and mmap leak fixes from Chenggang Qin.
. Assorted build fixes for from David Ahern and Jiri Olsa.
. Speed up and prettify the build system, from Ingo Molnar.
. Implement addr2line directly using libbfd, from Roberto Vitillo.
. Separate the GTK support in a separate libperf-gtk.so DSO, that
is only loaded when --gtk is specified, from Namhyung Kim.
. perf bash completion fixes and improvements from Ramkumar
Ramachandra.
. Support for Openembedded/Yocto -dbg packages, from Ricardo
Ribalda Delgado.
And lots and lots of other fixes and code reorganizations that did not
make it into the list, see the shortlog, diffstat and the Git log for
details!"
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (300 commits)
uprobes: Fix the memory out of bound overwrite in copy_insn()
uprobes: Fix the wrong usage of current->utask in uprobe_copy_process()
perf tools: Remove unneeded include
perf record: Remove post_processing_offset variable
perf record: Remove advance_output function
perf record: Refactor feature handling into a separate function
perf trace: Don't relookup fields by name in each sample
perf tools: Fix version when building out of tree
perf evsel: Ditch evsel->handler.data field
uprobes: Export write_opcode() as uprobe_write_opcode()
uprobes: Introduce arch_uprobe->ixol
uprobes: Kill module_init() and module_exit()
uprobes: Move function declarations out of arch
perf/x86/intel: Add Ivy Bridge-EP uncore IRP box support
perf/x86/intel/uncore: Add filter support for IvyBridge-EP QPI boxes
perf: Factor out strncpy() in perf_event_mmap_event()
tools/perf: Add required memory barriers
perf: Fix arch_perf_out_copy_user default
perf: Update a stale comment
perf: Optimize perf_output_begin() -- address calculation
...
|
||
|
Linus Torvalds
|
1006fae359 |
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull IRQ changes from Ingo Molnar:
"The biggest change this cycle are the softirq/hardirq stack
interaction and nesting fixes, cleanups and reorganizations from
Frederic. This is the longer followup story to the softirq nesting
fix that is already upstream (commit
|
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|
Linus Torvalds
|
70fdcb83db |
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU updates from Ingo Molnar:
"The main RCU changes in this cycle are:
- Idle entry/exit changes, to throttle callback execution and other
refinements to speed up kbuild, primarily to address performance
issues located by Tibor Billes.
- Grace-period related changes, primarily to aid in debugging,
inspired by an -rt debugging session.
- Code reorganization moving RCU's source files into its own
kernel/rcu/ directory.
- RCU documentation updates
- Miscellaneous fixes.
Note, the following commit:
|
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Samuel Ortiz
|
90b128ed15 |
mfd-lee-3.13-3
MFD patches due for v3.13. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAABAgAGBQJSgL55AAoJEFGvii+H/HdhPHgP/3jYD4qZcrrGID4QuNpZU+T8 DGneYS5Dl9YTrV0O5vuiaE59ZzaizP55OsKHYQ8kuu4i2WxB6Vc9Hyr3IWKKFA04 tV3Zmf6l2OcUzizmmlWI34sbYKAIfvFrHxkAwpUMX80oCgaDNIDUcHTiGgHGaNhT zsh1HyEWr6Uqjl9QqQhSP3WX5462+IolaAiFB7xD5ax+hIQk4u3v69j8LT3hXuv8 kJHKA+i8tNFcJjoWKB87b+ARkvejLpj/nyFesG5K1KY7Z7hIG6OWxJIR/T9260F8 ecOZuZ3PmLOLQOy3YckWZ2mOVwuQY+bxc+V5Y00I6S5uwG/Cz5ls5xpsrZ9PqNQo RLmZgeA2w5CuX28/3A3ziI9ZPasZ0XcoQOPuTN/JQjyNB3n1QtJTPEIp3yPGaWn4 UkadZTkkCEUD/oRXBhthe3J0rsYEwh8A31+W1Soh6CxYtgMiK8y3scDs9PIqb7nx j6tIpHnBMlbdSPxUTPLO2Od8lDCVXRkaR2LonXu0KDw3XoGVsSucWBW+UjTPCOiF 2M43+Nfonl5rhr0F/LP2wUO3RZnEABE/Gc85No6AFw7BRrSCtbrVP/S1LoZlSjA3 b7/Fywq/HtptdKAw160/KAhBhU3RIl03qmmmJXYeIo2HRZtFGoNc/WabCsdxpvpq DjnM4H/pppBQiTgxwQJX =tWbq -----END PGP SIGNATURE----- Merge tag 'mfd-lee-3.13-3' of git://git.linaro.org/people/ljones/mfd mfd-lee-3.13-3 MFD patches due for v3.13 - 2nd round. |
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Daniel Borkmann
|
a98814cef8 |
random32: upgrade taus88 generator to taus113 from errata paper
Since we use prandom*() functions quite often in networking code
i.e. in UDP port selection, netfilter code, etc, upgrade the PRNG
from Pierre L'Ecuyer's original paper "Maximally Equidistributed
Combined Tausworthe Generators", Mathematics of Computation, 65,
213 (1996), 203--213 to the version published in his errata paper [1].
The Tausworthe generator is a maximally-equidistributed generator,
that is fast and has good statistical properties [1].
The version presented there upgrades the 3 state LFSR to a 4 state
LFSR with increased periodicity from about 2^88 to 2^113. The
algorithm is presented in [1] by the very same author who also
designed the original algorithm in [2].
Also, by increasing the state, we make it a bit harder for attackers
to "guess" the PRNGs internal state. See also discussion in [3].
Now, as we use this sort of weak initialization discussed in [3]
only between core_initcall() until late_initcall() time [*] for
prandom32*() users, namely in prandom_init(), it is less relevant
from late_initcall() onwards as we overwrite seeds through
prandom_reseed() anyways with a seed source of higher entropy, that
is, get_random_bytes(). In other words, a exhaustive keysearch of
96 bit would be needed. Now, with the help of this patch, this
state-search increases further to 128 bit. Initialization needs
to make sure that s1 > 1, s2 > 7, s3 > 15, s4 > 127.
taus88 and taus113 algorithm is also part of GSL. I added a test
case in the next patch to verify internal behaviour of this patch
with GSL and ran tests with the dieharder 3.31.1 RNG test suite:
$ dieharder -g 052 -a -m 10 -s 1 -S 4137730333 #taus88
$ dieharder -g 054 -a -m 10 -s 1 -S 4137730333 #taus113
With this seed configuration, in order to compare both, we get
the following differences:
algorithm taus88 taus113
rands/second [**] 1.61e+08 1.37e+08
sts_serial(4, 1st run) WEAK PASSED
sts_serial(9, 2nd run) WEAK PASSED
rgb_lagged_sum(31) WEAK PASSED
We took out diehard_sums test as according to the authors it is
considered broken and unusable [4]. Despite that and the slight
decrease in performance (which is acceptable), taus113 here passes
all 113 tests (only rgb_minimum_distance_5 in WEAK, the rest PASSED).
In general, taus/taus113 is considered "very good" by the authors
of dieharder [5].
The papers [1][2] states a single warm-up step is sufficient by
running quicktaus once on each state to ensure proper initialization
of ~s_{0}:
Our selection of (s) according to Table 1 of [1] row 1 holds the
condition L - k <= r - s, that is,
(32 32 32 32) - (31 29 28 25) <= (25 27 15 22) - (18 2 7 13)
with r = k - q and q = (6 2 13 3) as also stated by the paper.
So according to [2] we are safe with one round of quicktaus for
initialization. However we decided to include the warm-up phase
of the PRNG as done in GSL in every case as a safety net. We also
use the warm up phase to make the output of the RNG easier to
verify by the GSL output.
In prandom_init(), we also mix random_get_entropy() into it, just
like drivers/char/random.c does it, jiffies ^ random_get_entropy().
random-get_entropy() is get_cycles(). xor is entropy preserving so
it is fine if it is not implemented by some architectures.
Note, this PRNG is *not* used for cryptography in the kernel, but
rather as a fast PRNG for various randomizations i.e. in the
networking code, or elsewhere for debugging purposes, for example.
[*]: In order to generate some "sort of pseduo-randomness", since
get_random_bytes() is not yet available for us, we use jiffies and
initialize states s1 - s3 with a simple linear congruential generator
(LCG), that is x <- x * 69069; and derive s2, s3, from the 32bit
initialization from s1. So the above quote from [3] accounts only
for the time from core to late initcall, not afterwards.
[**] Single threaded run on MacBook Air w/ Intel Core i5-3317U
[1] http://www.iro.umontreal.ca/~lecuyer/myftp/papers/tausme2.ps
[2] http://www.iro.umontreal.ca/~lecuyer/myftp/papers/tausme.ps
[3] http://thread.gmane.org/gmane.comp.encryption.general/12103/
[4] http://code.google.com/p/dieharder/source/browse/trunk/libdieharder/diehard_sums.c?spec=svn490&r=490#20
[5] http://www.phy.duke.edu/~rgb/General/dieharder.php
Joint work with Hannes Frederic Sowa.
Cc: Florian Weimer <fweimer@redhat.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Daniel Borkmann
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38e9efcdb3 |
random32: move rnd_state to linux/random.h
struct rnd_state got mistakenly pulled into uapi header. It is not
used anywhere and does also not belong there!
Commit
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Hannes Frederic Sowa
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4af712e8df |
random32: add prandom_reseed_late() and call when nonblocking pool becomes initialized
The Tausworthe PRNG is initialized at late_initcall time. At that time the entropy pool serving get_random_bytes is not filled sufficiently. This patch adds an additional reseeding step as soon as the nonblocking pool gets marked as initialized. On some machines it might be possible that late_initcall gets called after the pool has been initialized. In this situation we won't reseed again. (A call to prandom_seed_late blocks later invocations of early reseed attempts.) Joint work with Daniel Borkmann. Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: David S. Miller <davem@davemloft.net> |