- 15 Nov, 2013 28 commits
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Kirill A. Shutemov authored
Signed-off-by:
Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by:
David Howells <dhowells@redhat.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 authored
Signed-off-by:
Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by:
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Kirill A. Shutemov authored
Signed-off-by:
Hans-Christian Egtvedt <egtvedt@samfundet.no> Signed-off-by:
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Kirill A. Shutemov authored
Signed-off-by:
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Kirill A. Shutemov authored
Signed-off-by:
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Kirill A. Shutemov authored
Signed-off-by:
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Kirill A. Shutemov authored
Signed-off-by:
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Kirill A. Shutemov authored
It will fix NR_PAGETABLE accounting. It's also required if the arch is going ever support split ptl. Signed-off-by:
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Kirill A. Shutemov authored
It will fix NR_PAGETABLE accounting. It's also required if the arch is going ever support split ptl. Signed-off-by:
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Kirill A. Shutemov authored
It will fix NR_PAGETABLE accounting. It's also required if the arch is going ever support split ptl. Signed-off-by:
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Kirill A. Shutemov authored
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:
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Kirill A. Shutemov authored
Add missing check for memory allocation fail. Signed-off-by:
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Kirill A. Shutemov authored
Add missing check for memory allocation fail. Signed-off-by:
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Kirill A. Shutemov authored
Add missing check for memory allocation fail. Signed-off-by:
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Kirill A. Shutemov authored
In split page table lock case, we embed spinlock_t into struct page. For obvious reason, we don't want to increase size of struct page if spinlock_t is too big, like with DEBUG_SPINLOCK or DEBUG_LOCK_ALLOC or on -rt kernel. So we disable split page table lock, if spinlock_t is too big. This patchset allows to allocate the lock dynamically if spinlock_t is big. In this page->ptl is used to store pointer to spinlock instead of spinlock itself. It costs additional cache line for indirect access, but fix page fault scalability for multi-threaded applications. LOCK_STAT depends on DEBUG_SPINLOCK, so on current kernel enabling LOCK_STAT to analyse scalability issues breaks scalability. ;) The patchset mostly fixes this. Results for ./thp_memscale -c 80 -b 512M on 4-socket machine: baseline, no CONFIG_LOCK_STAT: 9.115460703 seconds time elapsed baseline, CONFIG_LOCK_STAT=y: 53.890567123 seconds time elapsed patched, no CONFIG_LOCK_STAT: 8.852250368 seconds time elapsed patched, CONFIG_LOCK_STAT=y: 11.069770759 seconds time elapsed Patch count is scary, but most of them trivial. Overview: Patches 1-4 Few bug fixes. No dependencies to other patches. Probably should applied as soon as possible. Patch 5 Changes signature of pgtable_page_ctor(). We will use it for dynamic lock allocation, so it can fail. Patches 6-8 Add missing constructor/destructor calls on few archs. It's fixes NR_PAGETABLE accounting and prepare to use split ptl. Patches 9-33 Add pgtable_page_ctor() fail handling to all archs. Patches 34 Finally adds support of dynamically-allocated page->pte. Also contains documentation for split page table lock. This patch (of 34): I've missed that we preallocate few pmds on pgd_alloc() if X86_PAE enabled. Let's add missed constructor/destructor calls. I haven't noticed it during testing since prep_new_page() clears page->mapping and therefore page->ptl. It's effectively equal to spin_lock_init(&page->ptl). Signed-off-by:
Ingo Molnar <mingo@kernel.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chen Liqin <liqin.chen@sunplusct.com> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Chris Zankel <chris@zankel.net> Cc: Christoph Lameter <cl@linux.com> Cc: David Howells <dhowells@redhat.com> Cc: David S. Miller <davem@davemloft.net> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: James Hogan <james.hogan@imgtec.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Cc: Lennox Wu <lennox.wu@gmail.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Mikael Starvik <starvik@axis.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Richard Weinberger <richard@nod.at> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by:
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Kirill A. Shutemov authored
Enable PMD split page table lock for X86_64 and PAE. [akpm@linux-foundation.org: coding-style fixes] Signed-off-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> Reviewed-by:
Steven Rostedt <rostedt@goodmis.org> Signed-off-by:
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Kirill A. Shutemov authored
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:
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Kirill A. Shutemov authored
Only trivial cases left. Let's convert them altogether. Signed-off-by:
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Kirill A. Shutemov authored
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:
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Kirill A. Shutemov authored
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:
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Kirill A. Shutemov authored
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:
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Kirill A. Shutemov authored
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:
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Kirill A. Shutemov authored
Basic api, backed by mm->page_table_lock for now. Actual implementation will be added later. Signed-off-by:
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Kirill A. Shutemov authored
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:
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Kirill A. Shutemov authored
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:
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Kirill A. Shutemov authored
Alex Thorlton noticed that some massively threaded workloads work poorly, if THP enabled. This patchset fixes this by introducing split page table lock for PMD tables. hugetlbfs is not covered yet. This patchset is based on work by Naoya Horiguchi. : akpm result summary: : : THP off, v3.12-rc2: 18.059261877 seconds time elapsed : THP off, patched: 16.768027318 seconds time elapsed : : THP on, v3.12-rc2: 42.162306788 seconds time elapsed : THP on, patched: 8.397885779 seconds time elapsed : : HUGETLB, v3.12-rc2: 47.574936948 seconds time elapsed : HUGETLB, patched: 19.447481153 seconds time elapsed THP off, v3.12-rc2: ------------------- Performance counter stats for './thp_memscale -c 80 -b 512m' (5 runs): 1037072.835207 task-clock # 57.426 CPUs utilized ( +- 3.59% ) 95,093 context-switches # 0.092 K/sec ( +- 3.93% ) 140 cpu-migrations # 0.000 K/sec ( +- 5.28% ) 10,000,550 page-faults # 0.010 M/sec ( +- 0.00% ) 2,455,210,400,261 cycles # 2.367 GHz ( +- 3.62% ) [83.33%] 2,429,281,882,056 stalled-cycles-frontend # 98.94% frontend cycles idle ( +- 3.67% ) [83.33%] 1,975,960,019,659 stalled-cycles-backend # 80.48% backend cycles idle ( +- 3.88% ) [66.68%] 46,503,296,013 instructions # 0.02 insns per cycle # 52.24 stalled cycles per insn ( +- 3.21% ) [83.34%] 9,278,997,542 branches # 8.947 M/sec ( +- 4.00% ) [83.34%] 89,881,640 branch-misses # 0.97% of all branches ( +- 1.17% ) [83.33%] 18.059261877 seconds time elapsed ( +- 2.65% ) THP on, v3.12-rc2: ------------------ Performance counter stats for './thp_memscale -c 80 -b 512m' (5 runs): 3114745.395974 task-clock # 73.875 CPUs utilized ( +- 1.84% ) 267,356 context-switches # 0.086 K/sec ( +- 1.84% ) 99 cpu-migrations # 0.000 K/sec ( +- 1.40% ) 58,313 page-faults # 0.019 K/sec ( +- 0.28% ) 7,416,635,817,510 cycles # 2.381 GHz ( +- 1.83% ) [83.33%] 7,342,619,196,993 stalled-cycles-frontend # 99.00% frontend cycles idle ( +- 1.88% ) [83.33%] 6,267,671,641,967 stalled-cycles-backend # 84.51% backend cycles idle ( +- 2.03% ) [66.67%] 117,819,935,165 instructions # 0.02 insns per cycle # 62.32 stalled cycles per insn ( +- 4.39% ) [83.34%] 28,899,314,777 branches # 9.278 M/sec ( +- 4.48% ) [83.34%] 71,787,032 branch-misses # 0.25% of all branches ( +- 1.03% ) [83.33%] 42.162306788 seconds time elapsed ( +- 1.73% ) HUGETLB, v3.12-rc2: ------------------- Performance counter stats for './thp_memscale_hugetlbfs -c 80 -b 512M' (5 runs): 2588052.787264 task-clock # 54.400 CPUs utilized ( +- 3.69% ) 246,831 context-switches # 0.095 K/sec ( +- 4.15% ) 138 cpu-migrations # 0.000 K/sec ( +- 5.30% ) 21,027 page-faults # 0.008 K/sec ( +- 0.01% ) 6,166,666,307,263 cycles # 2.383 GHz ( +- 3.68% ) [83.33%] 6,086,008,929,407 stalled-cycles-frontend # 98.69% frontend cycles idle ( +- 3.77% ) [83.33%] 5,087,874,435,481 stalled-cycles-backend # 82.51% backend cycles idle ( +- 4.41% ) [66.67%] 133,782,831,249 instructions # 0.02 insns per cycle # 45.49 stalled cycles per insn ( +- 4.30% ) [83.34%] 34,026,870,541 branches # 13.148 M/sec ( +- 4.24% ) [83.34%] 68,670,942 branch-misses # 0.20% of all branches ( +- 3.26% ) [83.33%] 47.574936948 seconds time elapsed ( +- 2.09% ) THP off, patched: ----------------- Performance counter stats for './thp_memscale -c 80 -b 512m' (5 runs): 943301.957892 task-clock # 56.256 CPUs utilized ( +- 3.01% ) 86,218 context-switches # 0.091 K/sec ( +- 3.17% ) 121 cpu-migrations # 0.000 K/sec ( +- 6.64% ) 10,000,551 page-faults # 0.011 M/sec ( +- 0.00% ) 2,230,462,457,654 cycles # 2.365 GHz ( +- 3.04% ) [83.32%] 2,204,616,385,805 stalled-cycles-frontend # 98.84% frontend cycles idle ( +- 3.09% ) [83.32%] 1,778,640,046,926 stalled-cycles-backend # 79.74% backend cycles idle ( +- 3.47% ) [66.69%] 45,995,472,617 instructions # 0.02 insns per cycle # 47.93 stalled cycles per insn ( +- 2.51% ) [83.34%] 9,179,700,174 branches # 9.731 M/sec ( +- 3.04% ) [83.35%] 89,166,529 branch-misses # 0.97% of all branches ( +- 1.45% ) [83.33%] 16.768027318 seconds time elapsed ( +- 2.47% ) THP on, patched: ---------------- Performance counter stats for './thp_memscale -c 80 -b 512m' (5 runs): 458793.837905 task-clock # 54.632 CPUs utilized ( +- 0.79% ) 41,831 context-switches # 0.091 K/sec ( +- 0.97% ) 98 cpu-migrations # 0.000 K/sec ( +- 1.66% ) 57,829 page-faults # 0.126 K/sec ( +- 0.62% ) 1,077,543,336,716 cycles # 2.349 GHz ( +- 0.81% ) [83.33%] 1,067,403,802,964 stalled-cycles-frontend # 99.06% frontend cycles idle ( +- 0.87% ) [83.33%] 864,764,616,143 stalled-cycles-backend # 80.25% backend cycles idle ( +- 0.73% ) [66.68%] 16,129,177,440 instructions # 0.01 insns per cycle # 66.18 stalled cycles per insn ( +- 7.94% ) [83.35%] 3,618,938,569 branches # 7.888 M/sec ( +- 8.46% ) [83.36%] 33,242,032 branch-misses # 0.92% of all branches ( +- 2.02% ) [83.32%] 8.397885779 seconds time elapsed ( +- 0.18% ) HUGETLB, patched: ----------------- Performance counter stats for './thp_memscale_hugetlbfs -c 80 -b 512M' (5 runs): 395353.076837 task-clock # 20.329 CPUs utilized ( +- 8.16% ) 55,730 context-switches # 0.141 K/sec ( +- 5.31% ) 138 cpu-migrations # 0.000 K/sec ( +- 4.24% ) 21,027 page-faults # 0.053 K/sec ( +- 0.00% ) 930,219,717,244 cycles # 2.353 GHz ( +- 8.21% ) [83.32%] 914,295,694,103 stalled-cycles-frontend # 98.29% frontend cycles idle ( +- 8.35% ) [83.33%] 704,137,950,187 stalled-cycles-backend # 75.70% backend cycles idle ( +- 9.16% ) [66.69%] 30,541,538,385 instructions # 0.03 insns per cycle # 29.94 stalled cycles per insn ( +- 3.98% ) [83.35%] 8,415,376,631 branches # 21.286 M/sec ( +- 3.61% ) [83.36%] 32,645,478 branch-misses # 0.39% of all branches ( +- 3.41% ) [83.32%] 19.447481153 seconds time elapsed ( +- 2.00% ) This patch (of 11): CONFIG_GENERIC_LOCKBREAK increases sizeof(spinlock_t) to 8 bytes. It leads to increase sizeof(struct page) by 4 bytes on 32-bit system if split page table lock is in use, since page->ptl shares space in union with longs and pointers. Let's disable split page table lock on 32-bit systems with GENERIC_LOCKBREAK enabled. Signed-off-by: -
Kirill A. Shutemov authored
There's only one caller of do_generic_file_read() and the only actor is file_read_actor(). No reason to have a callback parameter. Signed-off-by:
Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by:
Wanpeng Li <liwanp@linux.vnet.ibm.com> Cc: Matthew Wilcox <willy@linux.intel.com> Cc: Hugh Dickins <hughd@google.com> Signed-off-by:
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Andrew Morton authored
Cc: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by:
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- 14 Nov, 2013 12 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4Linus Torvalds authored
Pull ext4 changes from Ted Ts'o: "Ext4 updates for 3.13. Mostly bug fixes and cleanups" * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: add prototypes for macro-generated functions ext4: return non-zero st_blocks for inline data ext4: use prandom_u32() instead of get_random_bytes() ext4: remove unreachable code after ext4_can_extents_be_merged() ext4: remove unreachable code in ext4_can_extents_be_merged() ext4: avoid bh leak in retry path of ext4_expand_extra_isize_ea() ext4: don't count free clusters from a corrupt block group ext4: fix FITRIM in no journal mode ext4: drop set but otherwise unused variable from ext4_add_dirent_to_inline() ext4: change ext4_read_inline_dir() to return 0 on success ext4: pair trace_ext4_writepages & trace_ext4_writepages_result ext4: add ratelimiting to ext4 messages ext4: fix performance regression in ext4_writepages ext4: fixup kerndoc annotation of mpage_map_and_submit_extent() ext4: fix assertion in ext4_add_complete_io()
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git://oss.sgi.com/xfs/xfsLinus Torvalds authored
Pull xfs update from Ben Myers: "For 3.13-rc1 we have an eclectic assortment of bugfixes, cleanups, and refactoring. Bugfixes that stand out are the fix for the AGF/AGI deadlock, incore extent list fixes, verifier fixes for v4 superblocks and growfs, and memory leaks. There are some asserts, warnings, and strings that were cleaned up. There was further rearrangement of code to make libxfs and the kernel sync up more easily, differences between v2 and v3 directory code were abstracted using an ops vector, xfs_inactive was reworked, and the preallocation/hole punching code was refactored. - simplify kmem_zone_zalloc - add traces for AGF/AGI read ops - add additional AIL traces - fix xfs_remove AGF vs AGI deadlock - fix the extent count of new incore extent page in the indirection array - don't fail bad secondary superblocks verification on v4 filesystems due to unzeroed bits after v4 fields - fix possible NULL dereference in xlog_verify_iclog - remove redundant assert in xfs_dir2_leafn_split - prevent stack overflows from page cache allocation - fix some sparse warnings - fix directory block format verifier to check the leaf entry count - abstract the differences in dir2/dir3 via an ops vector - continue process of reorganization to make libxfs/kernel code merges easier - refactor the preallocation and hole punching code - fix for growfs and verifiers - remove unnecessary scary corruption error when probing non-xfs filesystems - remove extra newlines from strings passed to printk - prevent deadlock trying to cover an active log - rework xfs_inactive() - add the inode directory type support to XFS_IOC_FSGEOM - cleanup (remove) usage of is_bad_inode - fix miscalculation in xfs_iext_realloc_direct which results in oversized direct extent list - remove unnecessary count arg to xfs_iomap_write_allocate - fix memory leak in xlog_recover_add_to_trans - check superblock instead of block magic to determine if dtype field is present - fix lockdep annotation due to project quotas - fix regression in xfs_node_toosmall which can lead to incorrect directory btree node collapse - make log recovery verify filesystem uuid of recovering blocks - fix XFS_IOC_FREE_EOFBLOCKS definition - remove invalid assert in xfs_inode_free - fix for AIL lock regression" * tag 'xfs-for-linus-v3.13-rc1' of git://oss.sgi.com/xfs/xfs: (49 commits) xfs: simplify kmem_{zone_}zalloc xfs: add tracepoints to AGF/AGI read operations xfs: trace AIL manipulations xfs: xfs_remove deadlocks due to inverted AGF vs AGI lock ordering xfs: fix the extent count when allocating an new indirection array entry xfs: be more forgiving of a v4 secondary sb w/ junk in v5 fields xfs: fix possible NULL dereference in xlog_verify_iclog xfs:xfs_dir2_node.c: pointer use before check for null xfs: prevent stack overflows from page cache allocation xfs: fix static and extern sparse warnings xfs: validity check the directory block leaf entry count xfs: make dir2 ftype offset pointers explicit xfs: convert directory vector functions to constants xfs: convert directory vector functions to constants xfs: vectorise encoding/decoding directory headers xfs: vectorise DA btree operations xfs: vectorise directory leaf operations xfs: vectorise directory data operations part 2 xfs: vectorise directory data operations xfs: vectorise remaining shortform dir2 ops ... -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf updates from Ingo Molnar: "A number of fixes: - Fix segfault on perf trace -i perf.data, from Namhyung Kim. - Fix segfault with --no-mmap-pages, from David Ahern. - Don't force a refresh during progress update in the TUI, greatly reducing startup costs, fix from Patrick Palka. - Fix sw clock event period test wrt not checking if using > max_sample_freq. - Handle throttle events in 'object code reading' test, fix from Adrian Hunter. - Prevent condition that all sort keys are elided, fix from Namhyung Kim. - Round mmap pages to power 2, from David Ahern. And a number of late arrival changes: - Add summary only option to 'perf trace', suppressing the decoding of events, from David Ahern - 'perf trace --summary' formatting simplifications, from Pekka Enberg. - Beautify fifth argument of mmap() as fd, in 'perf trace', from Namhyung Kim. - Add direct access to dynamic arrays in libtraceevent, from Steven Rostedt. - Synthesize non-exec MMAP records when --data used, allowing the resolution of data addresses to symbols (global variables, etc), by Arnaldo Carvalho de Melo. - Code cleanups by David Ahern and Adrian Hunter" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits) tools lib traceevent: Add direct access to dynamic arrays perf target: Shorten perf_target__ to target__ perf tests: Handle throttle events in 'object code reading' test perf evlist: Refactor mmap_pages parsing perf evlist: Round mmap pages to power 2 - v2 perf record: Fix segfault with --no-mmap-pages perf trace: Add summary only option perf trace: Simplify '--summary' output perf trace: Change syscall summary duration order perf tests: Compensate lower sample freq with longer test loop perf trace: Fix segfault on perf trace -i perf.data perf trace: Separate tp syscall field caching into init routine to be reused perf trace: Beautify fifth argument of mmap() as fd perf tests: Use lower sample_freq in sw clock event period test perf tests: Check return of perf_evlist__open sw clock event period test perf record: Move existing write_output into helper function perf record: Use correct return type for write() perf tools: Prevent condition that all sort keys are elided perf machine: Simplify synthesize_threads method perf machine: Introduce synthesize_threads method out of open coded equivalent ... -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull two x86 fixes from Ingo Molnar. * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/microcode/amd: Tone down printk(), don't treat a missing firmware file as an error x86/dumpstack: Fix printk_address for direct addresses
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler fixes from Ingo Molnar: "Four bugfixes and one performance fix" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/fair: Avoid integer overflow sched: Optimize task_sched_runtime() sched/numa: Cure update_numa_stats() vs. hotplug sched/numa: Fix NULL pointer dereference in task_numa_migrate() sched: Fix endless sync_sched/rcu() loop inside _cpu_down()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
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 ... -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86/trace changes from Ingo Molnar: "This adds page fault tracepoints which have zero runtime cost in the disabled case via IDT trickery (no NOPs in the page fault hotpath)" * 'x86-trace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, trace: Change user|kernel_page_fault to page_fault_user|kernel x86, trace: Add page fault tracepoints x86, trace: Delete __trace_alloc_intr_gate() x86, trace: Register exception handler to trace IDT x86, trace: Remove __alloc_intr_gate()
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git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linuxLinus Torvalds authored
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 ...
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git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linuxLinus Torvalds authored
Pull thermal management updates from Zhang Rui: "This time we only have a few changes as there are no soc thermal changes from Eduardo. The only big change is the introduction of TMON, a tool to help visualize, tune, and test the thermal subsystem. The rest is mostly cleanups and fixes all over. Specifics: - introduce TMON, a tool base on thermal sysfs I/F. It can be used to visualize, tune and test the thermal subsystem. - fix a zone/cooling device binding problem, when both thermal zone bind parameters and .bind() callback are available" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: tools/thermal: Introduce tmon, a tool for thermal subsystem thermal: Fix binding problem when there is thermal zone params thermal: cpu_cooling: fix return value check in cpufreq_cooling_register() Thermal: Check for validity before doing kfree thermal/intel_powerclamp: Add newer CPU models Thermal: Tidy up error handling in powerclamp_init thermal: Kconfig: cosmetic fixes ACPI/thermal : Remove zone disabled warning typo in drivers/thermal/Kconfig: lpatform instead of platform -
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pciLinus Torvalds authored
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 ... -
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
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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git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dmLinus Torvalds authored
Pull device mapper changes from Mike Snitzer: "A set of device-mapper changes for 3.13. Improve reliability of buffer allocations for dm messages with a small number of arguments, a couple path group initialization fixes for dm multipath, a fix for resizing a dm array, various fixes and optimizations for dm cache, a fix for device mapper's Kconfig menu indentation. Features added include: - dm crypt support for activating legacy CBC TrueCrypt containers (useful for forensics of these old TCRYPT containers) - reduced dm-cache memory requirements for each block in the cache - basic support for shrinking a dm-cache's cache (fast) device - most notably, dm-cache support for managing cache coherency when deploying dm-cache with sophisticated origin volumes (that support hardware snapshots and/or clustering): these changes come in the form of a new passthrough operation mode and a cache block invalidation interface" * tag 'dm-3.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (32 commits) dm cache: resolve small nits and improve Documentation dm cache: add cache block invalidation support dm cache: add remove_cblock method to policy interface dm cache policy mq: reduce memory requirements dm cache metadata: check the metadata version when reading the superblock dm cache: add passthrough mode dm cache: cache shrinking support dm cache: promotion optimisation for writes dm cache: be much more aggressive about promoting writes to discarded blocks dm cache policy mq: implement writeback_work() and mq_{set,clear}_dirty() dm cache: optimize commit_if_needed dm space map disk: optimise sm_disk_dec_block MAINTAINERS: add reference to device-mapper's linux-dm.git tree dm: fix Kconfig menu indentation dm: allow remove to be deferred dm table: print error on preresume failure dm crypt: add TCW IV mode for old CBC TCRYPT containers dm crypt: properly handle extra key string in initialization dm cache: log error message if dm_kcopyd_copy() fails dm cache: use cell_defer() boolean argument consistently ...
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