)]}' { "log": [ { "commit": "559fdc3c1b624edb1933a875022fe7e27934d11c", "tree": "b722805dbebd9584ffb981e2be84385ee0e22c67", "parents": [ "7255fe2a42c612f2b8fe4c347f0a5f0c97d85a46" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Mon Nov 16 12:45:14 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Nov 16 13:27:45 2009 +0100" }, "message": "perf_event: Optimize perf_output_lock()\n\nThe purpose of perf_output_{un,}lock() is to:\n\n 1) avoid publishing incomplete data\n [ possible when publishing a head that is ahead of an entry\n that is still being written ]\n\n 2) guarantee fwd progress\n [ a simple refcount on pending writers doesn\u0027t need to drop to\n 0, making it so would end up implementing something like forced\n quiecent states of RCU ]\n\nTo satisfy the above without undue complexity it serializes\nbetween CPUs, this means that a pending writer can only be the\nsame cpu in a nested context, and since (under normal operation)\na cpu always makes progress we\u0027re good -- if the head is only\npublished when the bottom most writer completes.\n\nNow we don\u0027t need to disable IRQs in order to serialize between\nCPUs, disabling preemption ought to be sufficient, esp since we\nalready deal with nesting due to NMIs.\n\nThis avoids potentially expensive (and needless) local IRQ\ndisable/enable ops.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c1258373161.26714.254.camel@laptop\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "0ffa798d947f5f5e40690cc9d38e678080a34f87", "tree": "a9e25ba4431de513d4c83201429e9ff301cbaf50", "parents": [ "39dc78b6510323848e3356452f7dab9499736978", "c86e2eaded39843e1bf4f07d1adfab4494f20894", "c5659b74f052150791750234f92dcfb29d27efa5" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Nov 15 09:51:19 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Nov 15 09:51:24 2009 +0100" }, "message": "Merge branches \u0027perf/powerpc\u0027 and \u0027perf/bench\u0027 into perf/core\n\nMerge reason: Both \u0027perf bench\u0027 and the pending PowerPC changes\n are now ready for the next merge window.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "39dc78b6510323848e3356452f7dab9499736978", "tree": "cf8a8fede74e41b203fd00e3ccd21ead2e851442", "parents": [ "4c49b12853fbb5eff4849b7b6a1e895776f027a1", "156171c71a0dc4bce12b4408bb1591f8fe32dc1a" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Nov 15 09:50:38 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Nov 15 09:50:41 2009 +0100" }, "message": "Merge commit \u0027v2.6.32-rc7\u0027 into perf/core\n\nMerge reason: pick up perf fixlets\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "67178767b936fb47a3a5e88097cff41ccbda7acb", "tree": "f55675817e8d934bd2a627a729a010a58bbba464", "parents": [ "db48cccc7c709ccfa7cb4ac702bc27c216bffee7" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Fri Nov 13 10:06:34 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Nov 13 10:48:27 2009 +0100" }, "message": "tracing: Rename \u0027lockdep\u0027 event subsystem into \u0027lock\u0027\n\nLockdep events subsystem gathers various locking related events\nsuch as a request, release, contention or acquisition of a lock.\n\nThe name of this event subsystem is a bit of a misnomer since\nthese events are not quite related to lockdep but more generally\nto locking, ie: these events are not reporting lock dependencies\nor possible deadlock scenario but pure locking events.\n\nHence this rename.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nAcked-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nAcked-by: Hitoshi Mitake \u003cmitake@dcl.info.waseda.ac.jp\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: Mike Galbraith \u003cefault@gmx.de\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nLKML-Reference: \u003c1258103194-843-1-git-send-email-fweisbec@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "961767b75d63c21aa60ee3ccf940288c3c1afde6", "tree": "2ba45f33bcd7998fd52a1f423e76265370953054", "parents": [ "1fd18a871a0761633d02d0536ecb4a311d92a3d3", "d4515646699b6ad7b1a98ceb871296b957f3ef47" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Nov 11 11:30:15 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Nov 11 11:30:15 2009 -0800" }, "message": "Merge branch \u0027core-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n highmem: Fix debug_kmap_atomic() to also handle KM_IRQ_PTE, KM_NMI, and KM_NMI_PTE\n highmem: Fix race in debug_kmap_atomic() which could cause warn_count to underflow\n rcu: Fix long-grace-period race between forcing and initialization\n uids: Prevent tear down race\n" }, { "commit": "1fd18a871a0761633d02d0536ecb4a311d92a3d3", "tree": "2f7deb11ace12181473289d45aed06943f80e760", "parents": [ "26a9ba160f50115ece48198608002600914932a7", "e7e7e0c084ef862d5754701108d4a038514d6314" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Nov 11 11:29:58 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Nov 11 11:29:58 2009 -0800" }, "message": "Merge branch \u0027irq-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027irq-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n genirq: try_one_irq() must be called with irq disabled\n" }, { "commit": "e9036b36eed4d3cdb33fa9cbcdd9888ae516889f", "tree": "769497c425cfe602e7765884185cd769428cc67e", "parents": [ "968c86458a5975efa7a95f832a4ec9fb21471137" ], "author": { "name": "Cyrill Gorcunov", "email": "gorcunov@openvz.org", "time": "Mon Oct 26 22:24:14 2009 +0300" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Nov 08 13:15:48 2009 +0100" }, "message": "sched: Use root_task_group_empty only with FAIR_GROUP_SCHED\n\nroot_task_group_empty is used only with FAIR_GROUP_SCHED\nso if we use other scheduler options we get:\n\n kernel/sched.c:314: warning: \u0027root_task_group_empty\u0027 defined but not used\n\nSo move CONFIG_FAIR_GROUP_SCHED up that it covers\nroot_task_group_empty().\n\nSigned-off-by: Cyrill Gorcunov \u003cgorcunov@openvz.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nLKML-Reference: \u003c20091026192414.GB5321@lenovo\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "968c86458a5975efa7a95f832a4ec9fb21471137", "tree": "05be75c81e7492d402471c5a51394cce9a5459f2", "parents": [ "7c9abfb884b8737f0afdc8a88bcea77526f0da87" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Fri Nov 06 15:31:08 2009 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Nov 08 11:26:25 2009 +0100" }, "message": "sched: Fix kernel-doc function parameter name\n\nFix variable name in sched.c kernel-doc notation.\n\nFixes this DocBook warning:\n\n Warning(kernel/sched.c:2008): No description found for parameter\n \u0027p\u0027 Warning(kernel/sched.c:2008): Excess function parameter \u0027k\u0027\n description in \u0027kthread_bind\u0027\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nLKML-Reference: \u003c4AF4B1BC.8020604@oracle.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "e7e7e0c084ef862d5754701108d4a038514d6314", "tree": "8f098ade05740e21e93767b657d7b0e6c90b588e", "parents": [ "7c9abfb884b8737f0afdc8a88bcea77526f0da87" ], "author": { "name": "Yong Zhang", "email": "yong.zhang0@gmail.com", "time": "Sat Nov 07 11:16:13 2009 +0800" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Sat Nov 07 21:44:45 2009 +0100" }, "message": "genirq: try_one_irq() must be called with irq disabled\n\nPrarit reported:\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n[ INFO: inconsistent lock state ]\n2.6.32-rc5 #1\n---------------------------------\ninconsistent {IN-HARDIRQ-W} -\u003e {HARDIRQ-ON-W} usage.\nswapper/0 [HC0[0]:SC1[1]:HE1:SE0] takes:\n (\u0026irq_desc_lock_class){?.-...}, at: [\u003cffffffff810c264e\u003e] try_one_irq+0x32/0x138\n{IN-HARDIRQ-W} state was registered at:\n [\u003cffffffff81095160\u003e] __lock_acquire+0x2fc/0xd5d\n [\u003cffffffff81095cb4\u003e] lock_acquire+0xf3/0x12d\n [\u003cffffffff814cdadd\u003e] _spin_lock+0x40/0x89\n [\u003cffffffff810c3389\u003e] handle_level_irq+0x30/0x105\n [\u003cffffffff81014e0e\u003e] handle_irq+0x95/0xb7\n [\u003cffffffff810141bd\u003e] do_IRQ+0x6a/0xe0\n [\u003cffffffff81012813\u003e] ret_from_intr+0x0/0x16\nirq event stamp: 195096\nhardirqs last enabled at (195096): [\u003cffffffff814cd7f7\u003e] _spin_unlock_irq+0x3a/0x5c\nhardirqs last disabled at (195095): [\u003cffffffff814cdbdd\u003e] _spin_lock_irq+0x29/0x95\nsoftirqs last enabled at (195088): [\u003cffffffff81068c92\u003e] __do_softirq+0x1c1/0x1ef\nsoftirqs last disabled at (195093): [\u003cffffffff8101304c\u003e] call_softirq+0x1c/0x30\n\nother info that might help us debug this:\n1 lock held by swapper/0:\n #0: (kernel/irq/spurious.c:21){+.-...}, at: [\u003cffffffff81070cf2\u003e]\nrun_timer_softirq+0x1a9/0x315\n\nstack backtrace:\nPid: 0, comm: swapper Not tainted 2.6.32-rc5 #1\nCall Trace:\n \u003cIRQ\u003e [\u003cffffffff81093e94\u003e] valid_state+0x187/0x1ae\n [\u003cffffffff81093fe4\u003e] mark_lock+0x129/0x253\n [\u003cffffffff810951d4\u003e] __lock_acquire+0x370/0xd5d\n [\u003cffffffff81095cb4\u003e] lock_acquire+0xf3/0x12d\n [\u003cffffffff814cdadd\u003e] _spin_lock+0x40/0x89\n [\u003cffffffff810c264e\u003e] try_one_irq+0x32/0x138\n [\u003cffffffff810c2795\u003e] poll_all_shared_irqs+0x41/0x6d\n [\u003cffffffff810c27dd\u003e] poll_spurious_irqs+0x1c/0x49\n [\u003cffffffff81070d82\u003e] run_timer_softirq+0x239/0x315\n [\u003cffffffff81068bd3\u003e] __do_softirq+0x102/0x1ef\n [\u003cffffffff8101304c\u003e] call_softirq+0x1c/0x30\n [\u003cffffffff81014b65\u003e] do_softirq+0x59/0xca\n [\u003cffffffff810686ad\u003e] irq_exit+0x58/0xae\n [\u003cffffffff81029b84\u003e] smp_apic_timer_interrupt+0x94/0xba\n [\u003cffffffff81012a33\u003e] apic_timer_interrupt+0x13/0x20\n\nThe reason is that try_one_irq() is called from hardirq context with\ninterrupts disabled and from softirq context (poll_all_shared_irqs())\nwith interrupts enabled.\n\nDisable interrupts before calling it from poll_all_shared_irqs().\n\nReported-and-tested-by: Prarit Bhargava \u003cprarit@redhat.com\u003e\nSigned-off-by: Yong Zhang \u003cyong.zhang0@gmail.com\u003e\nLKML-Reference: \u003c1257563773-4620-1-git-send-email-yong.zhang0@gmail.com\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "608221fdf9a2170962295dcfbea53dc5c50d1a74", "tree": "26712f2f8a8a332369df2b31174c8c5b46c42164", "parents": [ "72cc129e8dae988d2a132467cfd0ecd7623c35fb", "b84ff7d6f1b7f8a43414e74d972ec4c8f3361db4" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Nov 05 10:56:47 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Nov 05 10:56:47 2009 -0800" }, "message": "Merge branch \u0027sched-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027sched-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n sched: Fix kthread_bind() by moving the body of kthread_bind() to sched.c\n sched: Disable SD_PREFER_LOCAL at node level\n sched: Fix boot crash by zalloc()ing most of the cpu masks\n sched: Strengthen buddies and mitigate buddy induced latencies\n" }, { "commit": "72cc129e8dae988d2a132467cfd0ecd7623c35fb", "tree": "e0a3fdfa3e7cb45e75727fe77558e64ec1bc9b4f", "parents": [ "411094acb70f171a111710cf32031c749ffdd28c", "ed146b25942b428f8e8056587b7638ce76573c2f" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Nov 05 10:56:25 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Nov 05 10:56:25 2009 -0800" }, "message": "Merge branch \u0027tracing-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027tracing-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n ftrace: Fix unmatched locking in ftrace_regex_write()\n ring-buffer: Synchronize resizing buffer with reader lock\n" }, { "commit": "a2e71271535fde493c32803b1f34789f97efcb5e", "tree": "90d7139bea2f49e947f27af92614fa6eca50b64d", "parents": [ "6d7aa9d721c8c640066142fd9534afcdf68d7f9d", "b419148e567728f6af0c3b01965c1cc141e3e13a" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Nov 04 11:54:15 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Nov 04 11:59:45 2009 +0100" }, "message": "Merge commit \u0027v2.6.32-rc6\u0027 into perf/core\n\nConflicts:\n\ttools/perf/Makefile\n\nMerge reason: Resolve the conflict, merge to upstream and merge in\n perf fixes so we can add a dependent patch.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "ed146b25942b428f8e8056587b7638ce76573c2f", "tree": "36b3355b5d53057accb92000ee5b3986d5a05a8b", "parents": [ "f7112949f6a4cd6883d66c882d568c2197321de6" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Tue Nov 03 08:55:38 2009 +0800" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed Nov 04 01:42:10 2009 -0500" }, "message": "ftrace: Fix unmatched locking in ftrace_regex_write()\n\nWhen a command is passed to the set_ftrace_filter, then\nthe ftrace_regex_lock is still held going back to user space.\n\n # echo \u0027do_open : foo\u0027 \u003e set_ftrace_filter\n (still holding ftrace_regex_lock when returning to user space!)\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nLKML-Reference: \u003c4AEF7F8A.3080300@cn.fujitsu.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "f7112949f6a4cd6883d66c882d568c2197321de6", "tree": "2982044acfce5f1e422be2fd7467d2f1177c5159", "parents": [ "6d3f1e12f46a2f9a1bb7e7aa433df8dd31ce5647" ], "author": { "name": "Lai Jiangshan", "email": "laijs@cn.fujitsu.com", "time": "Tue Nov 03 19:42:45 2009 +0800" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed Nov 04 00:04:20 2009 -0500" }, "message": "ring-buffer: Synchronize resizing buffer with reader lock\n\nWe got a sudden panic when we reduced the size of the\nringbuffer.\n\nWe can reproduce the panic by the following steps:\n\necho 1 \u003e events/sched/enable\ncat trace_pipe \u003e /dev/null \u0026\n\nwhile ((1))\ndo\necho 12000 \u003e buffer_size_kb\necho 512 \u003e buffer_size_kb\ndone\n\n(not more than 5 seconds, panic ...)\n\nReported-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nLKML-Reference: \u003c4AF01735.9060409@cn.fujitsu.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "38dc63459f185795b24a39f3f4921a433ea9980b", "tree": "205a8abc9b20c4f5573e4d2fbc03e74388cef2bc", "parents": [ "1d510750941a53a1d3049c1d33c75d6dfcd78618", "2ddac2a6a8f13e95664fe7ad1b728ac84fb1bd07" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Nov 03 07:52:57 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Nov 03 07:52:57 2009 -0800" }, "message": "Merge branch \u0027pm-fixes\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6\n\n* \u0027pm-fixes\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:\n PM: Remove some debug messages producing too much noise\n PM: Fix warning on suspend errors\n PM / Hibernate: Add newline to load_image() fail path\n PM / Hibernate: Fix error handling in save_image()\n PM / Hibernate: Fix blkdev refleaks\n PM / yenta: Split resume into early and late parts (rev. 4)\n" }, { "commit": "1d510750941a53a1d3049c1d33c75d6dfcd78618", "tree": "03f501224f839aa897cf540e29595aeda8551052", "parents": [ "1c211849d893b14cc923a18708923954fdd2c63e" ], "author": { "name": "Ian Campbell", "email": "Ian.Campbell@citrix.com", "time": "Tue Nov 03 10:11:14 2009 +0000" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Nov 03 07:52:39 2009 -0800" }, "message": "Correct nr_processes() when CPUs have been unplugged\n\nnr_processes() returns the sum of the per cpu counter process_counts for\nall online CPUs. This counter is incremented for the current CPU on\nfork() and decremented for the current CPU on exit(). Since a process\ndoes not necessarily fork and exit on the same CPU the process_count for\nan individual CPU can be either positive or negative and effectively has\nno meaning in isolation.\n\nTherefore calculating the sum of process_counts over only the online\nCPUs omits the processes which were started or stopped on any CPU which\nhas since been unplugged. Only the sum of process_counts across all\npossible CPUs has meaning.\n\nThe only caller of nr_processes() is proc_root_getattr() which\ncalculates the number of links to /proc as\n stat-\u003enlink \u003d proc_root.nlink + nr_processes();\n\nYou don\u0027t have to be all that unlucky for the nr_processes() to return a\nnegative value leading to a negative number of links (or rather, an\napparently enormous number of links). If this happens then you can get\nfailures where things like \"ls /proc\" start to fail because they got an\n-EOVERFLOW from some stat() call.\n\nExample with some debugging inserted to show what goes on:\n # ps haux|wc -l\n nr_processes: CPU0: 90\n nr_processes: CPU1: 1030\n nr_processes: CPU2: -900\n nr_processes: CPU3: -136\n nr_processes: TOTAL: 84\n proc_root_getattr. nlink 12 + nr_processes() 84 \u003d 96\n 84\n # echo 0 \u003e/sys/devices/system/cpu/cpu1/online\n # ps haux|wc -l\n nr_processes: CPU0: 85\n nr_processes: CPU2: -901\n nr_processes: CPU3: -137\n nr_processes: TOTAL: -953\n proc_root_getattr. nlink 12 + nr_processes() -953 \u003d -941\n 75\n # stat /proc/\n nr_processes: CPU0: 84\n nr_processes: CPU2: -901\n nr_processes: CPU3: -137\n nr_processes: TOTAL: -954\n proc_root_getattr. nlink 12 + nr_processes() -954 \u003d -942\n File: `/proc/\u0027\n Size: 0 Blocks: 0 IO Block: 1024 directory\n Device: 3h/3d Inode: 1 Links: 4294966354\n Access: (0555/dr-xr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)\n Access: 2009-11-03 09:06:55.000000000 +0000\n Modify: 2009-11-03 09:06:55.000000000 +0000\n Change: 2009-11-03 09:06:55.000000000 +0000\n\nI\u0027m not 100% convinced that the per_cpu regions remain valid for offline\nCPUs, although my testing suggests that they do. If not then I think the\ncorrect solution would be to aggregate the process_count for a given CPU\ninto a global base value in cpu_down().\n\nThis bug appears to pre-date the transition to git and it looks like it\nmay even have been present in linux-2.6.0-test7-bk3 since it looks like\nthe code Rusty patched in http://lwn.net/Articles/64773/ was already\nwrong.\n\nSigned-off-by: Ian Campbell \u003cian.campbell@citrix.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "bf9fd67a0328d56eff6022f80d4eb88ba6614119", "tree": "e2621ab848a7ad7cae2397e0356ece7e2eeea452", "parents": [ "4ff277f9e42fa16314045bd124a61519286094c0" ], "author": { "name": "Jiri Slaby", "email": "jirislaby@gmail.com", "time": "Wed Oct 28 22:55:42 2009 +0100" }, "committer": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Tue Nov 03 11:03:09 2009 +0100" }, "message": "PM / Hibernate: Add newline to load_image() fail path\n\nFinish a line by \\n when load_image fails in the middle of loading.\n\nSigned-off-by: Jiri Slaby \u003cjirislaby@gmail.com\u003e\nAcked-by: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\n" }, { "commit": "4ff277f9e42fa16314045bd124a61519286094c0", "tree": "59c00800cead3926938a68145dcddba4b9ad160f", "parents": [ "76b57e613f6006ff525a17876c89326d127cadc9" ], "author": { "name": "Jiri Slaby", "email": "jirislaby@gmail.com", "time": "Wed Oct 28 22:55:33 2009 +0100" }, "committer": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Tue Nov 03 11:02:43 2009 +0100" }, "message": "PM / Hibernate: Fix error handling in save_image()\n\nThere are too many retval variables in save_image(). Thus error return\nvalue from snapshot_read_next() may be ignored and only part of the\nsnapshot (successfully) written.\n\nRemove \u0027error\u0027 variable, invert the condition in the do-while loop\nand convert the loop to use only \u0027ret\u0027 variable.\n\nSwitch the rest of the function to consider only \u0027ret\u0027.\n\nAlso make sure we end printed line by \\n if an error occurs.\n\nSigned-off-by: Jiri Slaby \u003cjirislaby@gmail.com\u003e\nAcked-by: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\n" }, { "commit": "76b57e613f6006ff525a17876c89326d127cadc9", "tree": "244d876f24581fb40d1900003c55b1c7ca5abb91", "parents": [ "9905d1b411946fb3fb228e8c6529fd94afda8a92" ], "author": { "name": "Jiri Slaby", "email": "jirislaby@gmail.com", "time": "Wed Oct 07 22:37:35 2009 +0200" }, "committer": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Tue Nov 03 11:01:46 2009 +0100" }, "message": "PM / Hibernate: Fix blkdev refleaks\n\nWhile cruising through the swsusp code I found few blkdev reference\nleaks of resume_bdev.\n\nswsusp_read: remove blkdev_put altogether. Some fail paths do\n not do that.\nswsusp_check: make sure we always put a reference on fail paths\nsoftware_resume: all fail paths between swsusp_check and swsusp_read\n omit swsusp_close. Add it in those cases. And since\n swsusp_read doesn\u0027t drop the reference anymore, do\n it here unconditionally.\n\n[rjw: Fixed a small coding style issue.]\n\nSigned-off-by: Jiri Slaby \u003cjirislaby@gmail.com\u003e\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\n" }, { "commit": "b84ff7d6f1b7f8a43414e74d972ec4c8f3361db4", "tree": "7e8db08b8dd7d28780f3d08466928c907e5e0440", "parents": [ "6b9de613ae9c79b637e070136585dde029578065" ], "author": { "name": "Mike Galbraith", "email": "efault@gmx.de", "time": "Thu Oct 29 11:48:30 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Nov 03 07:25:00 2009 +0100" }, "message": "sched: Fix kthread_bind() by moving the body of kthread_bind() to sched.c\n\nEric Paris reported that commit\nf685ceacab07d3f6c236f04803e2f2f0dbcc5afb causes boot time\nPREEMPT_DEBUG complaints.\n\n [ 4.590699] BUG: using smp_processor_id() in preemptible [00000000] code: rmmod/1314\n [ 4.593043] caller is task_hot+0x86/0xd0\n\nSince kthread_bind() messes with scheduler internals, move the\nbody to sched.c, and lock the runqueue.\n\nReported-by: Eric Paris \u003ceparis@redhat.com\u003e\nSigned-off-by: Mike Galbraith \u003cefault@gmx.de\u003e\nTested-by: Eric Paris \u003ceparis@redhat.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c1256813310.7574.3.camel@marge.simson.net\u003e\n[ v2: fix !SMP build and clean up ]\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "3fe866ca6cc0495510a1d37c03a4abdc55174e83", "tree": "4b3d4ae603b01e2f9179d29402d5946ff50eb28f", "parents": [ "bce8fc4cb796dc77ea71699ef88802879a177474", "11df6dddcbc38affb7473aad3d962baf8414a947" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Nov 02 09:46:33 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Nov 02 09:46:33 2009 -0800" }, "message": "Merge branch \u0027core-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n futex: Fix spurious wakeup for requeue_pi really\n" }, { "commit": "bce8fc4cb796dc77ea71699ef88802879a177474", "tree": "683ff9f2def12d390af0ae2dc2326b4d9f85a1cd", "parents": [ "a5e3013d6612d2ed4aefdcd7920ae01df3b63b3a", "ec29b8d2af01912bb79adda8aeab4293539f29ac" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Nov 02 09:46:06 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Nov 02 09:46:06 2009 -0800" }, "message": "Merge branch \u0027perf-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027perf-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n perf tools: Remove -Wcast-align\n perf tools: Fix compatibility with libelf 0.8 and autodetect\n perf events: Don\u0027t generate events for the idle task when exclude_idle is set\n perf events: Fix swevent hrtimer sampling by keeping track of remaining time when enabling/disabling swevent hrtimers\n" }, { "commit": "a5e3013d6612d2ed4aefdcd7920ae01df3b63b3a", "tree": "89dce7d51c11ea56150e4f5613a28369e238f90e", "parents": [ "efcd9e0b91bcb92a1dd530d1a1f26eb83a5d21e2", "6d3f1e12f46a2f9a1bb7e7aa433df8dd31ce5647" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Nov 02 09:45:44 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Nov 02 09:45:44 2009 -0800" }, "message": "Merge branch \u0027tracing-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027tracing-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n tracing: Remove cpu arg from the rb_time_stamp() function\n tracing: Fix comment typo and documentation example\n tracing: Fix trace_seq_printf() return value\n tracing: Update *ppos instead of filp-\u003ef_pos\n" }, { "commit": "83f5b01ffbbaea6f97c9a79d21e240dbfb69f2f1", "tree": "e278471f3b9851028ef60e283ce8c73772531d82", "parents": [ "b00bc0b237055b4c45816325ee14f0bd83e6f590" ], "author": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Wed Oct 28 08:14:49 2009 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Nov 02 16:06:21 2009 +0100" }, "message": "rcu: Fix long-grace-period race between forcing and initialization\n\nVery long RCU read-side critical sections (50 milliseconds or\nso) can cause a race between force_quiescent_state() and\nrcu_start_gp() as follows on kernel builds with multi-level\nrcu_node hierarchies:\n\n1.\tCPU 0 calls force_quiescent_state(), sees that there is a\n\tgrace period in progress, and acquires -\u003efsqlock.\n\n2.\tCPU 1 detects the end of the grace period, and so\n\tcpu_quiet_msk_finish() sets rsp-\u003ecompleted to rsp-\u003egpnum.\n\tThis operation is carried out under the root rnp-\u003elock,\n\tbut CPU 0 has not yet acquired that lock. Note that\n\trsp-\u003esignaled is still RCU_SAVE_DYNTICK from the last\n\tgrace period.\n\n3.\tCPU 1 calls rcu_start_gp(), but no one wants a new grace\n\tperiod, so it drops the root rnp-\u003elock and returns.\n\n4.\tCPU 0 acquires the root rnp-\u003elock and picks up rsp-\u003ecompleted\n\tand rsp-\u003esignaled, then drops rnp-\u003elock. It then enters the\n\tRCU_SAVE_DYNTICK leg of the switch statement.\n\n5.\tCPU 2 invokes call_rcu(), and now needs a new grace period.\n\tIt calls rcu_start_gp(), which acquires the root rnp-\u003elock, sets\n\trsp-\u003esignaled to RCU_GP_INIT (too bad that CPU 0 is already in\n\tthe RCU_SAVE_DYNTICK leg of the switch statement!) and starts\n\tinitializing the rcu_node hierarchy. If there are multiple\n\tlevels to the hierarchy, it will drop the root rnp-\u003elock and\n\tinitialize the lower levels of the hierarchy.\n\n6.\tCPU 0 notes that rsp-\u003ecompleted has not changed, which permits\n both CPU 2 and CPU 0 to try updating it concurrently. If CPU 0\u0027s\n\tupdate prevails, later calls to force_quiescent_state() can\n\tcount old quiescent states against the new grace period, which\n\tcan in turn result in premature ending of grace periods.\n\n\tNot good.\n\nThis patch adds an RCU_GP_IDLE state for rsp-\u003esignaled that is\nset initially at boot time and any time a grace period ends.\nThis prevents CPU 0 from getting into the workings of\nforce_quiescent_state() in step 4. Additional locking and\nchecks prevent the concurrent update of rsp-\u003esignaled in step 6.\n\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nCc: laijs@cn.fujitsu.com\nCc: dipankar@in.ibm.com\nCc: mathieu.desnoyers@polymtl.ca\nCc: josh@joshtriplett.org\nCc: dvhltc@us.ibm.com\nCc: niv@us.ibm.com\nCc: peterz@infradead.org\nCc: rostedt@goodmis.org\nCc: Valdis.Kletnieks@vt.edu\nCc: dhowells@redhat.com\nLKML-Reference: \u003c1256742889199-git-send-email-\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "b00bc0b237055b4c45816325ee14f0bd83e6f590", "tree": "8c0e0c31fa3a60834b893c531355a925b7ce454a", "parents": [ "11df6dddcbc38affb7473aad3d962baf8414a947" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Nov 02 13:01:56 2009 +0100" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon Nov 02 16:02:39 2009 +0100" }, "message": "uids: Prevent tear down race\n\nIngo triggered the following warning:\n\nWARNING: at lib/debugobjects.c:255 debug_print_object+0x42/0x50()\nHardware name: System Product Name\nODEBUG: init active object type: timer_list\nModules linked in:\nPid: 2619, comm: dmesg Tainted: G W 2.6.32-rc5-tip+ #5298\nCall Trace:\n [\u003c81035443\u003e] warn_slowpath_common+0x6a/0x81\n [\u003c8120e483\u003e] ? debug_print_object+0x42/0x50\n [\u003c81035498\u003e] warn_slowpath_fmt+0x29/0x2c\n [\u003c8120e483\u003e] debug_print_object+0x42/0x50\n [\u003c8120ec2a\u003e] __debug_object_init+0x279/0x2d7\n [\u003c8120ecb3\u003e] debug_object_init+0x13/0x18\n [\u003c810409d2\u003e] init_timer_key+0x17/0x6f\n [\u003c81041526\u003e] free_uid+0x50/0x6c\n [\u003c8104ed2d\u003e] put_cred_rcu+0x61/0x72\n [\u003c81067fac\u003e] rcu_do_batch+0x70/0x121\n\ndebugobjects warns about an enqueued timer being initialized. If\nCONFIG_USER_SCHED\u003dy the user management code uses delayed work to\nremove the user from the hash table and tear down the sysfs objects.\n\nfree_uid is called from RCU and initializes/schedules delayed work if\nthe usage count of the user_struct is 0. The init/schedule happens\noutside of the uidhash_lock protected region which allows a concurrent\ncaller of find_user() to reference the about to be destroyed\nuser_struct w/o preventing the work from being scheduled. If the next\nfree_uid call happens before the work timer expired then the active\ntimer is initialized and the work scheduled again.\n\nThe race was introduced in commit 5cb350ba (sched: group scheduling,\nsysfs tunables) and made more prominent by commit 3959214f (sched:\ndelayed cleanup of user_struct)\n\nMove the init/schedule_delayed_work inside of the uidhash_lock\nprotected region to prevent the race.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nAcked-by: Dhaval Giani \u003cdhaval@linux.vnet.ibm.com\u003e\nCc: Paul E. McKenney \u003cpaulmck@us.ibm.com\u003e\nCc: Kay Sievers \u003ckay.sievers@vrfy.org\u003e\nCc: stable@kernel.org\n" }, { "commit": "49557e620339cb134127b5bfbcfecc06b77d0232", "tree": "a2a73c84a384243a63c1b8e8462c39381d5ef98e", "parents": [ "f685ceacab07d3f6c236f04803e2f2f0dbcc5afb" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Mon Nov 02 20:37:20 2009 +1030" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Nov 02 15:48:54 2009 +0100" }, "message": "sched: Fix boot crash by zalloc()ing most of the cpu masks\n\nI got a boot crash when forcing cpumasks offstack on 32 bit,\nbecause find_new_ilb() returned 3 on my UP system (nohz.cpu_mask\nwasn\u0027t zeroed).\n\nAFAICT the others need to be zeroed too: only\nnohz.ilb_grp_nohz_mask is initialized before use.\n\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nLKML-Reference: \u003c200911022037.21282.rusty@rustcorp.com.au\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "8633322c5fd5b2a986b279f88a7559d8409f7da3", "tree": "2db612751e9fa5c3624f008c7e4d520e77944852", "parents": [ "9532faeb293f5a5f0ff06f567de14e557698dbde", "4a6cc4bd32e580722882115d4c8b964d732c11e4" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 29 09:19:29 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 29 09:19:29 2009 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:\n sched: move rq_weight data array out of .percpu\n percpu: allow pcpu_alloc() to be called with IRQs off\n" }, { "commit": "9532faeb293f5a5f0ff06f567de14e557698dbde", "tree": "46319ff2506340b56b34801e3a722bbaf28d55bf", "parents": [ "add810a1c58ba9edb6076ababe5861f36c049217", "3c7d76e371ac1a3802ae1673f5c63554af59325c" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 29 09:18:20 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 29 09:18:20 2009 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-param-fixes\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-param-fixes:\n param: fix setting arrays of bool\n param: fix NULL comparison on oom\n param: fix lots of bugs with writing charp params from sysfs, by leaking mem.\n" }, { "commit": "3242f9804ba992c867360e2b57efc268b8e4e175", "tree": "96fbdbc1344aa67588ce26765f308c674b91a75f", "parents": [ "23756692147c5dfd3328afd42e16e9d943ff756c", "7456b0405d8fc063c49628f969cdb23be060fc80" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 29 08:20:00 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 29 08:20:00 2009 -0700" }, "message": "Merge branch \u0027hwpoison-2.6.32\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6\n\n* \u0027hwpoison-2.6.32\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6:\n HWPOISON: fix invalid page count in printk output\n HWPOISON: Allow schedule_on_each_cpu() from keventd\n HWPOISON: fix/proc/meminfo alignment\n HWPOISON: fix oops on ksm pages\n HWPOISON: Fix page count leak in hwpoison late kill in do_swap_page\n HWPOISON: return early on non-LRU pages\n HWPOISON: Add brief hwpoison description to Documentation\n HWPOISON: Clean up PR_MCE_KILL interface\n" }, { "commit": "fefcfd431b5181615e7da628e34c5227c895b85a", "tree": "0da42ba9d66c6e9a12b6352b5be41f2fa023c91b", "parents": [ "37c2ca24119f7dd89cbbb43833df1e6c5fb3417b", "89061d3d58e1f0742139605dc6a7950aa1ecc019" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 29 08:12:20 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 29 08:12:20 2009 -0700" }, "message": "Merge branch \u0027core-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n futex: Move drop_futex_key_refs out of spinlock\u0027ed region\n rcu: Fix TREE_PREEMPT_RCU CPU_HOTPLUG bad-luck hang\n rcu: Stopgap fix for synchronize_rcu_expedited() for TREE_PREEMPT_RCU\n rcu: Prevent RCU IPI storms in presence of high call_rcu() load\n futex: Check for NULL keys in match_futex\n futex: Handle spurious wake up\n" }, { "commit": "37c2ca24119f7dd89cbbb43833df1e6c5fb3417b", "tree": "7002e816ca784acbdd49c69752e08c4da00fe961", "parents": [ "6e958d73c25eecaf02a1998cda9ec8ce8da11042", "2e600d01c131ee189f55ca1879cd364b9e056df8" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 29 08:12:00 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 29 08:12:00 2009 -0700" }, "message": "Merge branch \u0027perf-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027perf-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n perf timechart: Improve the visual appearance of scheduler delays\n perf timechart: Fix the wakeup-arrows that point to non-visible processes\n perf top: Fix --delay_secs 0 division by zero\n perf tools: Bump version to 0.0.2\n perf_event: Adjust frequency and unthrottle for non-group-leader events\n" }, { "commit": "6e958d73c25eecaf02a1998cda9ec8ce8da11042", "tree": "94b8d48d268297925aa02f8ab358274f878bae9e", "parents": [ "7811a32407b971d9086c46403124f1453b95c430", "92f6a5e37a2e2d3342dafb2b39c2f8bc340bbf84" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 29 08:10:38 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 29 08:10:38 2009 -0700" }, "message": "Merge branch \u0027sched-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027sched-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n sched: Do less agressive buddy clearing\n sched: Disable SD_PREFER_LOCAL for MC/CPU domains\n" }, { "commit": "8c85dd8730bfb696e691145335f884c7baef8277", "tree": "2dca1aac534a4322695c12b2870b7c25cf60ccbe", "parents": [ "115a57c5b31ab560574fe1a09deaba2ae89e77b5" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Mon Oct 26 16:50:07 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 29 07:39:30 2009 -0700" }, "message": "sysctl: fix false positives when PROC_SYSCTL\u003dn\n\nHaving -\u003eprocname but not -\u003eproc_handler is valid when PROC_SYSCTL\u003dn,\npeople use such combination to reduce ifdefs with non-standard handlers.\n\nAddresses http://bugzilla.kernel.org/show_bug.cgi?id\u003d14408\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nReported-by: Peter Teoh \u003chtmldeveloper@gmail.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: \"Rafael J. Wysocki\" \u003crjw@sisk.pl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "478988d3b28e98a31e0cfe24e011e28ba0f3cf0d", "tree": "0f14f3a2f242258d2d7a0ddb3025c308f666b7ee", "parents": [ "58355c7876a0754377c37c8af948b4cd423410e2" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Mon Oct 26 16:49:36 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 29 07:39:25 2009 -0700" }, "message": "cgroup: fix strstrip() misuse\n\ncgroup_write_X64() and cgroup_write_string() ignore the return value of\nstrstrip(). it makes small inconsistent behavior.\n\nexample:\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n # cd /mnt/cgroup/hoge\n # cat memory.swappiness\n 60\n # echo \"59 \" \u003e memory.swappiness\n # cat memory.swappiness\n 59\n # echo \" 58\" \u003e memory.swappiness\n bash: echo: write error: Invalid argument\n\nThis patch fixes it.\n\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nAcked-by: Paul Menage \u003cmenage@google.com\u003e\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0d0df599f1f11f12d589318bacb59a50fb5c0310", "tree": "084ab3d1562502ad6a056aa3fd8dd748683c8c2f", "parents": [ "370c28def65b3a5765192753a164403619b41d01" ], "author": { "name": "Christian Borntraeger", "email": "borntraeger@de.ibm.com", "time": "Mon Oct 26 16:49:34 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 29 07:39:25 2009 -0700" }, "message": "connector: fix regression introduced by sid connector\n\nSince commit 02b51df1b07b4e9ca823c89284e704cadb323cd1 (proc connector: add\nevent for process becoming session leader) we have the following warning:\n\nBadness at kernel/softirq.c:143\n[...]\nKrnl PSW : 0404c00180000000 00000000001481d4 (local_bh_enable+0xb0/0xe0)\n[...]\nCall Trace:\n([\u003c000000013fe04100\u003e] 0x13fe04100)\n [\u003c000000000048a946\u003e] sk_filter+0x9a/0xd0\n [\u003c000000000049d938\u003e] netlink_broadcast+0x2c0/0x53c\n [\u003c00000000003ba9ae\u003e] cn_netlink_send+0x272/0x2b0\n [\u003c00000000003baef0\u003e] proc_sid_connector+0xc4/0xd4\n [\u003c0000000000142604\u003e] __set_special_pids+0x58/0x90\n [\u003c0000000000159938\u003e] sys_setsid+0xb4/0xd8\n [\u003c00000000001187fe\u003e] sysc_noemu+0x10/0x16\n [\u003c00000041616cb266\u003e] 0x41616cb266\n\nThe warning is\n---\u003e WARN_ON_ONCE(in_irq() || irqs_disabled());\n\nThe network code must not be called with disabled interrupts but\nsys_setsid holds the tasklist_lock with spinlock_irq while calling the\nconnector.\n\nAfter a discussion we agreed that we can move proc_sid_connector from\n__set_special_pids to sys_setsid.\n\nWe also agreed that it is sufficient to change the check from\ntask_session(curr) !\u003d pid into err \u003e 0, since if we don\u0027t change the\nsession, this means we were already the leader and return -EPERM.\n\nOne last thing:\nThere is also daemonize(), and some people might want to get a\nnotification in that case. Since daemonize() is only needed if a user\nspace does kernel_thread this does not look important (and there seems\nto be no consensus if this connector should be called in daemonize). If\nwe really want this, we can add proc_sid_connector to daemonize() in an\nadditional patch (Scott?)\n\nSigned-off-by: Christian Borntraeger \u003cborntraeger@de.ibm.com\u003e\nCc: Scott James Remnant \u003cscott@ubuntu.com\u003e\nCc: Matt Helsley \u003cmatthltc@us.ibm.com\u003e\nCc: David S. Miller \u003cdavem@davemloft.net\u003e\nAcked-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nAcked-by: Evgeniy Polyakov \u003czbr@ioremap.net\u003e\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3ed67776fc23061180896086a206a02be649dd26", "tree": "ef9e0a8ced78ee7c70795070ca0efa2a2b90aa39", "parents": [ "66bd8424cc05e800db384053bf7ab967e4658468" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Wed Oct 28 17:37:01 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Oct 29 08:53:20 2009 +0100" }, "message": "tracing/filters: Fix to make system filter work\n\ncommit fce29d15b59245597f7f320db4a9f2be0f5fb512\n(\"tracing/filters: Refactor subsystem filter code\")\nbroke system filter accidentally.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Tom Zanussi \u003ctzanussi@gmail.com\u003e\nLKML-Reference: \u003c4AE810BD.3070009@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "3c7d76e371ac1a3802ae1673f5c63554af59325c", "tree": "6b8d84acb92196b0f9f044f98fd1908f8f655c87", "parents": [ "d553ad864e3b3dde3f1038d491e207021b2d6293" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Thu Oct 29 08:56:19 2009 -0600" }, "committer": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Thu Oct 29 08:56:20 2009 +1030" }, "message": "param: fix setting arrays of bool\n\nWe create a dummy struct kernel_param on the stack for parsing each\narray element, but we didn\u0027t initialize the flags word. This matters\nfor arrays of type \"bool\", where the flag indicates if it really is\nan array of bools or unsigned int (old-style).\n\nReported-by: Takashi Iwai \u003ctiwai@suse.de\u003e\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nCc: stable@kernel.org\n" }, { "commit": "d553ad864e3b3dde3f1038d491e207021b2d6293", "tree": "2a6d4e482e72daf6056e1fb984407754e019f15a", "parents": [ "65afac7d80ab3bc9f81e75eafb71eeb92a3ebdef" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Thu Oct 29 08:56:17 2009 -0600" }, "committer": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Thu Oct 29 08:56:18 2009 +1030" }, "message": "param: fix NULL comparison on oom\n\nkp-\u003earg is always true: it\u0027s the contents of that pointer we care about.\n\nReported-by: Takashi Iwai \u003ctiwai@suse.de\u003e\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nCc: stable@kernel.org\n" }, { "commit": "65afac7d80ab3bc9f81e75eafb71eeb92a3ebdef", "tree": "544c1e9192d8e47f1d1b1d54e36365f393ec7be0", "parents": [ "964fe080d94db82a3268443e9b9ece4c60246414" ], "author": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Thu Oct 29 08:56:16 2009 -0600" }, "committer": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Thu Oct 29 08:56:17 2009 +1030" }, "message": "param: fix lots of bugs with writing charp params from sysfs, by leaking mem.\n\ne180a6b7759a \"param: fix charp parameters set via sysfs\" fixed the case\nwhere charp parameters written via sysfs were freed, leaving drivers\naccessing random memory.\n\nUnfortunately, storing a flag in the kparam struct was a bad idea: it\u0027s\nrodata so setting it causes an oops on some archs. But that\u0027s not all:\n\n1) module_param_array() on charp doesn\u0027t work reliably, since we use an\n uninitialized temporary struct kernel_param.\n2) there\u0027s a fundamental race if a module uses this parameter and then\n it\u0027s changed: they will still access the old, freed, memory.\n\nThe simplest fix (ie. for 2.6.32) is to never free the memory. This\nprevents all these problems, at cost of a memory leak. In practice, there\nare only 18 places where a charp is writable via sysfs, and all are\nroot-only writable.\n\nReported-by: Takashi Iwai \u003ctiwai@suse.de\u003e\nCc: Sitsofe Wheeler \u003csitsofe@yahoo.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Christof Schmitt \u003cchristof.schmitt@de.ibm.com\u003e\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nCc: stable@kernel.org\n" }, { "commit": "11df6dddcbc38affb7473aad3d962baf8414a947", "tree": "fb05ef2583a55e69897988491522b92137ca5f26", "parents": [ "89061d3d58e1f0742139605dc6a7950aa1ecc019" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Oct 28 20:26:48 2009 +0100" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Oct 28 20:34:34 2009 +0100" }, "message": "futex: Fix spurious wakeup for requeue_pi really\n\nThe requeue_pi path doesn\u0027t use unqueue_me() (and the racy lock_ptr \u003d\u003d\nNULL test) nor does it use the wake_list of futex_wake() which where\nthe reason for commit 41890f2 (futex: Handle spurious wake up)\n\nSee debugging discussing on LKML Message-ID: \u003c4AD4080C.20703@us.ibm.com\u003e\n\nThe changes in this fix to the wait_requeue_pi path were considered to\nbe a likely unecessary, but harmless safety net. But it turns out that\ndue to the fact that for unknown $@#!*( reasons EWOULDBLOCK is defined\nas EAGAIN we built an endless loop in the code path which returns\ncorrectly EWOULDBLOCK.\n\nSpurious wakeups in wait_requeue_pi code path are unlikely so we do\nthe easy solution and return EWOULDBLOCK^WEAGAIN to user space and let\nit deal with the spurious wakeup.\n\nCc: Darren Hart \u003cdvhltc@us.ibm.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Eric Dumazet \u003ceric.dumazet@gmail.com\u003e\nCc: John Stultz \u003cjohnstul@linux.vnet.ibm.com\u003e\nCc: Dinakar Guniguntala \u003cdino@in.ibm.com\u003e\nLKML-Reference: \u003c4AE23C74.1090502@us.ibm.com\u003e\nCc: stable@kernel.org\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n\n" }, { "commit": "4a6cc4bd32e580722882115d4c8b964d732c11e4", "tree": "dbfa457caf9a65231f2f55c1ad03cf4d6f16f67c", "parents": [ "403a91b1659cb149dbddc5885f892734ae4542d8" ], "author": { "name": "Jiri Kosina", "email": "jkosina@suse.cz", "time": "Thu Oct 29 00:26:00 2009 +0900" }, "committer": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Thu Oct 29 00:26:00 2009 +0900" }, "message": "sched: move rq_weight data array out of .percpu\n\nCommit 34d76c41 introduced percpu array update_shares_data, size of which\nbeing proportional to NR_CPUS. Unfortunately this blows up ia64 for large\nNR_CPUS configuration, as ia64 allows only 64k for .percpu section.\n\nFix this by allocating this array dynamically and keep only pointer to it\npercpu.\n\nThe per-cpu handling doesn\u0027t impose significant performance penalty on\npotentially contented path in tg_shares_up().\n\n...\nffffffff8104337c: 65 48 8b 14 25 20 cd mov %gs:0xcd20,%rdx\nffffffff81043383: 00 00\nffffffff81043385: 48 c7 c0 00 e1 00 00 mov $0xe100,%rax\nffffffff8104338c: 48 c7 45 a0 00 00 00 movq $0x0,-0x60(%rbp)\nffffffff81043393: 00\nffffffff81043394: 48 c7 45 a8 00 00 00 movq $0x0,-0x58(%rbp)\nffffffff8104339b: 00\nffffffff8104339c: 48 01 d0 add %rdx,%rax\nffffffff8104339f: 49 8d 94 24 08 01 00 lea 0x108(%r12),%rdx\nffffffff810433a6: 00\nffffffff810433a7: b9 ff ff ff ff mov $0xffffffff,%ecx\nffffffff810433ac: 48 89 45 b0 mov %rax,-0x50(%rbp)\nffffffff810433b0: bb 00 04 00 00 mov $0x400,%ebx\nffffffff810433b5: 48 89 55 c0 mov %rdx,-0x40(%rbp)\n...\n\nAfter:\n\n...\nffffffff8104337c: 65 8b 04 25 28 cd 00 mov %gs:0xcd28,%eax\nffffffff81043383: 00\nffffffff81043384: 48 98 cltq\nffffffff81043386: 49 8d bc 24 08 01 00 lea 0x108(%r12),%rdi\nffffffff8104338d: 00\nffffffff8104338e: 48 8b 15 d3 7f 76 00 mov 0x767fd3(%rip),%rdx # ffffffff817ab368 \u003cupdate_shares_data\u003e\nffffffff81043395: 48 8b 34 c5 00 ee 6d mov -0x7e921200(,%rax,8),%rsi\nffffffff8104339c: 81\nffffffff8104339d: 48 c7 45 a0 00 00 00 movq $0x0,-0x60(%rbp)\nffffffff810433a4: 00\nffffffff810433a5: b9 ff ff ff ff mov $0xffffffff,%ecx\nffffffff810433aa: 48 89 7d c0 mov %rdi,-0x40(%rbp)\nffffffff810433ae: 48 c7 45 a8 00 00 00 movq $0x0,-0x58(%rbp)\nffffffff810433b5: 00\nffffffff810433b6: bb 00 04 00 00 mov $0x400,%ebx\nffffffff810433bb: 48 01 f2 add %rsi,%rdx\nffffffff810433be: 48 89 55 b0 mov %rdx,-0x50(%rbp)\n...\n\nSigned-off-by: Jiri Kosina \u003cjkosina@suse.cz\u003e\nAcked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\n" }, { "commit": "f7d7986060b2890fc26db6ab5203efbd33aa2497", "tree": "0ed63257afd3fd02d83ab481af35855603ac4790", "parents": [ "81cd5ae303e88a1e9d3a3e0f1fe8abd100edde16" ], "author": { "name": "Anton Blanchard", "email": "anton@samba.org", "time": "Sun Oct 18 01:09:29 2009 +0000" }, "committer": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Wed Oct 28 16:13:03 2009 +1100" }, "message": "perf_event: Add alignment-faults and emulation-faults software events\n\nAdd two more software events that are common to many cpus.\n\nAlignment faults: When a load or store is not aligned properly.\n\nEmulation faults: When an instruction is emulated in software.\n\nBoth cause a very significant slowdown (100x or worse), so identifying and\nfixing them is very important.\n\nSigned-off-by: Anton Blanchard \u003canton@samba.org\u003e\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\n" }, { "commit": "6d3f1e12f46a2f9a1bb7e7aa433df8dd31ce5647", "tree": "0c08371aefcf53b976d61e6a74667bcb21db3251", "parents": [ "67b394f7f26d84edb7294cc6528ab7ca6daa2ad1" ], "author": { "name": "Jiri Olsa", "email": "jolsa@redhat.com", "time": "Fri Oct 23 19:36:19 2009 -0400" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Oct 24 11:07:51 2009 +0200" }, "message": "tracing: Remove cpu arg from the rb_time_stamp() function\n\nThe cpu argument is not used inside the rb_time_stamp() function.\nPlus fix a typo.\n\nSigned-off-by: Jiri Olsa \u003cjolsa@redhat.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c20091023233647.118547500@goodmis.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "67b394f7f26d84edb7294cc6528ab7ca6daa2ad1", "tree": "3daea2ece0ff6eefc261cfdf42eb7b4a90a96799", "parents": [ "3e69533b51930a7169235db2caf703884e6e3bbb" ], "author": { "name": "Jiri Olsa", "email": "jolsa@redhat.com", "time": "Fri Oct 23 19:36:18 2009 -0400" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Oct 24 11:07:50 2009 +0200" }, "message": "tracing: Fix comment typo and documentation example\n\nTrivial patch to fix a documentation example and to fix a\ncomment.\n\nSigned-off-by: Jiri Olsa \u003cjolsa@redhat.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c20091023233646.871719877@goodmis.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "3e69533b51930a7169235db2caf703884e6e3bbb", "tree": "4cd0fe383dcb9eab2b0f944f227caffa3cdcd209", "parents": [ "cf8517cf905b5cd31d5790250b9ac39f7cb8aa53" ], "author": { "name": "Jiri Olsa", "email": "jolsa@redhat.com", "time": "Fri Oct 23 19:36:17 2009 -0400" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Oct 24 11:07:50 2009 +0200" }, "message": "tracing: Fix trace_seq_printf() return value\n\ntrace_seq_printf() return value is a little ambiguous. It\ncurrently returns the length of the space available in the\nbuffer. printf usually returns the amount written. This is not\nadequate here, because:\n\n trace_seq_printf(s, \"\");\n\nis perfectly legal, and returning 0 would indicate that it\nfailed.\n\nWe can always see the amount written by looking at the before\nand after values of s-\u003elen. This is not quite the same use as\nprintf. We only care if the string was successfully written to\nthe buffer or not.\n\nMake trace_seq_printf() return 0 if the trace oversizes the\nbuffer\u0027s free space, 1 otherwise.\n\nSigned-off-by: Jiri Olsa \u003cjolsa@redhat.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c20091023233646.631787612@goodmis.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "cf8517cf905b5cd31d5790250b9ac39f7cb8aa53", "tree": "22796f676ce955ec204ece1485dac6e93d1aeb3e", "parents": [ "964fe080d94db82a3268443e9b9ece4c60246414" ], "author": { "name": "Jiri Olsa", "email": "jolsa@redhat.com", "time": "Fri Oct 23 19:36:16 2009 -0400" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Oct 24 11:07:49 2009 +0200" }, "message": "tracing: Update *ppos instead of filp-\u003ef_pos\n\nInstead of directly updating filp-\u003ef_pos we should update the *ppos\nargument. The filp-\u003ef_pos gets updated within the file_pos_write()\nfunction called from sys_write().\n\nSigned-off-by: Jiri Olsa \u003cjolsa@redhat.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c20091023233646.399670810@goodmis.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "f685ceacab07d3f6c236f04803e2f2f0dbcc5afb", "tree": "f5fbbb177ccb784ffa6d6224b7b8f0cb8a096bb9", "parents": [ "92f6a5e37a2e2d3342dafb2b39c2f8bc340bbf84" ], "author": { "name": "Mike Galbraith", "email": "efault@gmx.de", "time": "Fri Oct 23 23:09:22 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Oct 23 23:48:28 2009 +0200" }, "message": "sched: Strengthen buddies and mitigate buddy induced latencies\n\nThis patch restores the effectiveness of LAST_BUDDY in preventing\npgsql+oltp from collapsing due to wakeup preemption. It also\nswitches LAST_BUDDY to exclusively do what it does best, namely\nmitigate the effects of aggressive wakeup preemption, which\nimproves vmark throughput markedly, and restores mysql+oltp\nscalability.\n\nSince buddies are about scalability, enable them beginning at the\npoint where we begin expanding sched_latency, namely\nsched_nr_latency. Previously, buddies were cleared aggressively,\nwhich seriously reduced their effectiveness. Not clearing\naggressively however, produces a small drop in mysql+oltp\nthroughput immediately after peak, indicating that LAST_BUDDY is\nactually doing some harm. This is right at the point where X on the\ndesktop in competition with another load wants low latency service.\nErgo, do not enable until we need to scale.\n\nTo mitigate latency induced by buddies, or by a task just missing\nwakeup preemption, check latency at tick time.\n\nLast hunk prevents buddies from stymieing BALANCE_NEWIDLE via\nCACHE_HOT_BUDDY.\n\nSupporting performance tests:\n\n tip \u003d v2.6.32-rc5-1497-ga525b32\n tipx \u003d NO_GENTLE_FAIR_SLEEPERS NEXT_BUDDY granularity knobs \u003d 31 knobs + 31 buddies\n tip+x \u003d NO_GENTLE_FAIR_SLEEPERS granularity knobs \u003d 31 knobs\n\n(Three run averages except where noted.)\n\n vmark:\n ------\n tip 108466 messages per second\n tip+ 125307 messages per second\n tip+x 125335 messages per second\n tipx 117781 messages per second\n 2.6.31.3 122729 messages per second\n\n mysql+oltp:\n -----------\n clients 1 2 4 8 16 32 64 128 256\n ..........................................................................................\n tip 9949.89 18690.20 34801.24 34460.04 32682.88 30765.97 28305.27 25059.64 19548.08\n tip+ 10013.90 18526.84 34900.38 34420.14 33069.83 32083.40 30578.30 28010.71 25605.47\n tipx 9698.71 18002.70 34477.56 33420.01 32634.30 31657.27 29932.67 26827.52 21487.18\n 2.6.31.3 8243.11 18784.20 34404.83 33148.38 31900.32 31161.90 29663.81 25995.94 18058.86\n\n pgsql+oltp:\n -----------\n clients 1 2 4 8 16 32 64 128 256\n ..........................................................................................\n tip 13686.37 26609.25 51934.28 51347.81 49479.51 45312.65 36691.91 26851.57 24145.35\n tip+ (1x) 13907.85 27135.87 52951.98 52514.04 51742.52 50705.43 49947.97 48374.19 46227.94\n tip+x 13906.78 27065.81 52951.19 52542.59 52176.11 51815.94 50838.90 49439.46 46891.00\n tipx 13742.46 26769.81 52351.99 51891.73 51320.79 50938.98 50248.65 48908.70 46553.84\n 2.6.31.3 13815.35 26906.46 52683.34 52061.31 51937.10 51376.80 50474.28 49394.47 47003.25\n\nSigned-off-by: Mike Galbraith \u003cefault@gmx.de\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003cnew-submission\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "54f4407608c59712a8f5ec1e10dfac40bef5a2e7", "tree": "78ab139c78b084d597c3a198b0b713b89ce23da5", "parents": [ "721a669b7225edeeb0ca8e2bf71b83882326a71b" ], "author": { "name": "Soeren Sandmann", "email": "sandmann@daimi.au.dk", "time": "Thu Oct 22 18:34:08 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Oct 23 09:35:02 2009 +0200" }, "message": "perf events: Don\u0027t generate events for the idle task when exclude_idle is set\n\nGetting samples for the idle task is often not interesting, so\ndon\u0027t generate them when exclude_idle is set for the event in\nquestion.\n\nSigned-off-by: Søren Sandmann Pedersen \u003csandmann@redhat.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Mike Galbraith \u003cefault@gmx.de\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nLKML-Reference: \u003cye8pr8fmlq7.fsf@camel16.daimi.au.dk\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "721a669b7225edeeb0ca8e2bf71b83882326a71b", "tree": "51bc7438941db50224489091eed677ba67decf56", "parents": [ "2e600d01c131ee189f55ca1879cd364b9e056df8" ], "author": { "name": "Soeren Sandmann", "email": "sandmann@daimi.au.dk", "time": "Tue Sep 15 14:33:08 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Oct 23 09:35:02 2009 +0200" }, "message": "perf events: Fix swevent hrtimer sampling by keeping track of remaining time when enabling/disabling swevent hrtimers\n\nMake the hrtimer based events work for sysprof.\n\nWhenever a swevent is scheduled out, the hrtimer is canceled.\nWhen it is scheduled back in, the timer is restarted. This\nhappens every scheduler tick, which means the timer never\nexpired because it was getting repeatedly restarted over and\nover with the same period.\n\nTo fix that, save the remaining time when disabling; when\nreenabling, use that saved time as the period instead of the\nuser-specified sampling period.\n\nAlso, move the starting and stopping of the hrtimers to helper\nfunctions instead of duplicating the code.\n\nSigned-off-by: Søren Sandmann Pedersen \u003csandmann@redhat.com\u003e\nLKML-Reference: \u003cye8vdi7mluz.fsf@camel16.daimi.au.dk\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "04bf7539c08d64184736cdc5e4ad617eda77eb0f", "tree": "b5fd1d3877e2a781a7953c408fdbde952acbdbc6", "parents": [ "af2bd9d534ca9f1ffdeb0780fb8508e71ed55803" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Tue Oct 20 06:45:02 2009 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 22 08:23:45 2009 +0900" }, "message": "PM: Make warning in suspend_test_finish() less likely to happen\n\nIncrease TEST_SUSPEND_SECONDS to 10 so the warning in\nsuspend_test_finish() doesn\u0027t annoy the users of slower systems so much.\n\nAlso, make the warning print the suspend-resume cycle time, so that we\nknow why the warning actually triggered.\n\nPatch prepared during the hacking session at the Kernel Summit in Tokyo.\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c258449bc9d286e2ee6546c9cdf911e96cbc126a", "tree": "51d389391bf6bef4be756652e401823f8171656e", "parents": [ "79b9ad361be8c6f3eeea97dd3883e8bcfa989333", "2e600d01c131ee189f55ca1879cd364b9e056df8" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Oct 20 07:51:41 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Oct 20 07:51:44 2009 +0200" }, "message": "Merge branch \u0027perf/urgent\u0027 into perf/core\n\nMerge reason: Queue up dependent patch.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "65a64464349883891e21e74af16c05d6e1eeb4e9", "tree": "7b4744f01840c337506dbb24debe5e50ee76186e", "parents": [ "5d5429af066b8896e903d829ac143711ed2c25f2" ], "author": { "name": "Andi Kleen", "email": "ak@linux.intel.com", "time": "Wed Oct 14 06:22:47 2009 +0200" }, "committer": { "name": "Andi Kleen", "email": "ak@linux.intel.com", "time": "Mon Oct 19 07:29:22 2009 +0200" }, "message": "HWPOISON: Allow schedule_on_each_cpu() from keventd\n\nRight now when calling schedule_on_each_cpu() from keventd there\nis a deadlock because it tries to schedule a work item on the current CPU\ntoo. This happens via lru_add_drain_all() in hwpoison.\n\nJust call the function for the current CPU in this case. This is actually\nfaster too.\n\nDebugging with Fengguang Wu \u0026 Max Asbock\n\nSigned-off-by: Andi Kleen \u003cak@linux.intel.com\u003e\n" }, { "commit": "89061d3d58e1f0742139605dc6a7950aa1ecc019", "tree": "4bf78b9d0834975b6e615ced614c74c67d57d52d", "parents": [ "237c80c5c8fb7ec128cf2a756b550dc41ad7eac7" ], "author": { "name": "Darren Hart", "email": "dvhltc@us.ibm.com", "time": "Thu Oct 15 15:30:48 2009 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Oct 16 10:19:18 2009 +0200" }, "message": "futex: Move drop_futex_key_refs out of spinlock\u0027ed region\n\nWhen requeuing tasks from one futex to another, the reference held\nby the requeued task to the original futex location needs to be\ndropped eventually.\n\nDropping the reference may ultimately lead to a call to\n\"iput_final\" and subsequently call into filesystem- specific code -\nwhich may be non-atomic.\n\nIt is therefore safer to defer this drop operation until after the\nfutex_hash_bucket spinlock has been dropped.\n\nOriginally-From: Helge Bahmann \u003chcb@chaoticmind.net\u003e\nSigned-off-by: Darren Hart \u003cdvhltc@us.ibm.com\u003e\nCc: \u003cstable@kernel.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Eric Dumazet \u003ceric.dumazet@gmail.com\u003e\nCc: Dinakar Guniguntala \u003cdino@in.ibm.com\u003e\nCc: John Stultz \u003cjohnstul@linux.vnet.ibm.com\u003e\nCc: Sven-Thorsten Dietrich \u003csdietrich@novell.com\u003e\nCc: John Kacur \u003cjkacur@redhat.com\u003e\nLKML-Reference: \u003c4AD7A298.5040802@us.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "bd0704111e625ebe75418531550cf471215c3267", "tree": "e9f59d817acea309ce9b2ddb4574dfeb4e153e5a", "parents": [ "a3ccf63ee643ef243cbf8918da8b3f9238f10029", "97ad5a034dcc164269d0b8a5cb3e827b33455c11" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 15 14:59:24 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 15 14:59:24 2009 -0700" }, "message": "Merge the right tty-fixes branch\n\n* branch \u0027tty-fixes\u0027\n tty: use the new \u0027flush_delayed_work()\u0027 helper to do ldisc flush\n workqueue: add \u0027flush_delayed_work()\u0027 to run and wait for delayed work\n tty: Make flush_to_ldisc() locking more robust\n" }, { "commit": "237c80c5c8fb7ec128cf2a756b550dc41ad7eac7", "tree": "5d6b3346f2c53cd3f7471001479a8dbd741533a3", "parents": [ "019129d595caaa5bd0b41d128308da1be6a91869" ], "author": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Thu Oct 15 09:26:14 2009 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Oct 15 20:33:01 2009 +0200" }, "message": "rcu: Fix TREE_PREEMPT_RCU CPU_HOTPLUG bad-luck hang\n\nIf the following sequence of events occurs, then\nTREE_PREEMPT_RCU will hang waiting for a grace period to\ncomplete, eventually OOMing the system:\n\no\tA TREE_PREEMPT_RCU build of the kernel is booted on a system\n\twith more than 64 physical CPUs present (32 on a 32-bit system).\n\tAlternatively, a TREE_PREEMPT_RCU build of the kernel is booted\n\twith RCU_FANOUT set to a sufficiently small value that the\n\tphysical CPUs populate two or more leaf rcu_node structures.\n\no\tA task is preempted in an RCU read-side critical section\n\twhile running on a CPU corresponding to a given leaf rcu_node\n\tstructure.\n\no\tAll CPUs corresponding to this same leaf rcu_node structure\n\trecord quiescent states for the current grace period.\n\no\tAll of these same CPUs go offline (hence the need for enough\n\tphysical CPUs to populate more than one leaf rcu_node structure).\n\tThis causes the preempted task to be moved to the root rcu_node\n\tstructure.\n\nAt this point, there is nothing left to cause the quiescent\nstate to be propagated up the rcu_node tree, so the current\ngrace period never completes.\n\nThe simplest fix, especially after considering the deadlock\npossibilities, is to detect this situation when the last CPU is\nofflined, and to set that CPU\u0027s -\u003eqsmask bit in its leaf\nrcu_node structure. This will cause the next invocation of\nforce_quiescent_state() to end the grace period.\n\nWithout this fix, this hang can be triggered in an hour or so on\nsome machines with rcutorture and random CPU onlining/offlining.\nWith this fix, these same machines pass a full 10 hours of this\nsort of abuse.\n\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nCc: laijs@cn.fujitsu.com\nCc: dipankar@in.ibm.com\nCc: mathieu.desnoyers@polymtl.ca\nCc: josh@joshtriplett.org\nCc: dvhltc@us.ibm.com\nCc: niv@us.ibm.com\nCc: peterz@infradead.org\nCc: rostedt@goodmis.org\nCc: Valdis.Kletnieks@vt.edu\nCc: dhowells@redhat.com\nLKML-Reference: \u003c20091015162614.GA19131@linux.vnet.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "a66abe7fbf7805a1a02f241bd5283265ff6706ec", "tree": "7b39b4339f8b5caf56c4f76c485f07b23861999b", "parents": [ "c171b552a7d316c7e1c3ad6f70a30178dd53e14c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Oct 15 12:24:04 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Oct 15 12:41:56 2009 +0200" }, "message": "tracing/events: Fix locking imbalance in the filter code\n\nAmérico Wang noticed that we have a locking imbalance in the\nerror paths of ftrace_profile_set_filter(), causing potential\nleakage of event_mutex.\n\nAlso clean up other error codepaths related to event_mutex\nwhile at it.\n\nPlus fix an initialized variable in the subsystem filter code.\n\nReported-by: Américo Wang \u003cxiyou.wangcong@gmail.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Tom Zanussi \u003ctzanussi@gmail.com\u003e\nLKML-Reference: \u003c2375c9f90910150247u5ccb8e2at58c764e385ffa490@mail.gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "6fb2915df7f0747d9044da9dbff5b46dc2e20830", "tree": "b4c5d7d913362ae6161c2859a7a385263330e965", "parents": [ "b0f1a59a98d7ac2102e7e4f22904c26d564a5628" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Thu Oct 15 11:21:42 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Oct 15 11:35:23 2009 +0200" }, "message": "tracing/profile: Add filter support\n\n- Add an ioctl to allocate a filter for a perf event.\n\n- Free the filter when the associated perf event is to be freed.\n\n- Do the filtering in perf_swevent_match().\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nAcked-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nAcked-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Tom Zanussi \u003ctzanussi@gmail.com\u003e\nLKML-Reference: \u003c4AD69546.8050401@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "b0f1a59a98d7ac2102e7e4f22904c26d564a5628", "tree": "63ee120d7fa1eda7e6c11db3530021634d3ba59b", "parents": [ "fce29d15b59245597f7f320db4a9f2be0f5fb512" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Thu Oct 15 11:21:12 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Oct 15 11:35:22 2009 +0200" }, "message": "tracing/filters: Use a different op for glob match\n\n\"\u003d\u003d\" will always do a full match, and \"~\" will do a glob match.\n\nIn the future, we may add \"\u003d~\" for regex match.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nAcked-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nAcked-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Tom Zanussi \u003ctzanussi@gmail.com\u003e\nLKML-Reference: \u003c4AD69528.3050309@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "fce29d15b59245597f7f320db4a9f2be0f5fb512", "tree": "f854f32b7c85b02935e9d04ee35957fb7bc7c4bb", "parents": [ "713490e02eed242b4c1c672b3c0c8b708f8b6f1d" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Thu Oct 15 11:20:34 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Oct 15 11:35:22 2009 +0200" }, "message": "tracing/filters: Refactor subsystem filter code\n\nChange:\n\tfor_each_pred\n\t\tfor_each_subsystem\nTo:\n\tfor_each_subsystem\n\t\tfor_each_pred\n\nThis change also prepares for later patches.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nAcked-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nAcked-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Tom Zanussi \u003ctzanussi@gmail.com\u003e\nLKML-Reference: \u003c4AD69502.8060903@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "713490e02eed242b4c1c672b3c0c8b708f8b6f1d", "tree": "8485759cfc112366d2485f473ad348a1c714f421", "parents": [ "c4dc775f53136cd6af8f88bce67cce9b42751768", "1beee96bae0daf7f491356777c3080cc436950f5" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Oct 15 11:33:56 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Oct 15 11:34:00 2009 +0200" }, "message": "Merge branch \u0027tracing/core\u0027 into perf/core\n\nMerge reason: to add event filter support we need the following\ncommits from the tracing tree:\n\n 3f6fe06: tracing/filters: Unify the regex parsing helpers\n 1889d20: tracing/filters: Provide basic regex support\n 737f453: tracing/filters: Cleanup useless headers\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "019129d595caaa5bd0b41d128308da1be6a91869", "tree": "2db09ada99b0b8ca0a6423626fa85a9c1a7fc141", "parents": [ "37c72e56f6b234ea7387ba530434a80abf2658d8" ], "author": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Wed Oct 14 10:15:56 2009 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Oct 15 11:17:17 2009 +0200" }, "message": "rcu: Stopgap fix for synchronize_rcu_expedited() for TREE_PREEMPT_RCU\n\nFor the short term, map synchronize_rcu_expedited() to\nsynchronize_rcu() for TREE_PREEMPT_RCU and to\nsynchronize_sched_expedited() for TREE_RCU.\n\nLonger term, there needs to be a real expedited grace period for\nTREE_PREEMPT_RCU, but candidate patches to date are considerably\nmore complex and intrusive.\n\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nCc: laijs@cn.fujitsu.com\nCc: dipankar@in.ibm.com\nCc: mathieu.desnoyers@polymtl.ca\nCc: josh@joshtriplett.org\nCc: dvhltc@us.ibm.com\nCc: niv@us.ibm.com\nCc: peterz@infradead.org\nCc: rostedt@goodmis.org\nCc: Valdis.Kletnieks@vt.edu\nCc: dhowells@redhat.com\nCc: npiggin@suse.de\nCc: jens.axboe@oracle.com\nLKML-Reference: \u003c12555405592331-git-send-email-\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "37c72e56f6b234ea7387ba530434a80abf2658d8", "tree": "1c589c3ecdebbe19488359795cde4c55726a63aa", "parents": [ "2bc872036e1c5948b5b02942810bbdd8dbdb9812" ], "author": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Wed Oct 14 10:15:55 2009 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Oct 15 11:17:16 2009 +0200" }, "message": "rcu: Prevent RCU IPI storms in presence of high call_rcu() load\n\nAs the number of callbacks on a given CPU rises, invoke\nforce_quiescent_state() only every blimit number of callbacks\n(defaults to 10,000), and even then only if no other CPU has\ninvoked force_quiescent_state() in the meantime.\n\nThis should fix the performance regression reported by Nick.\n\nReported-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nCc: laijs@cn.fujitsu.com\nCc: dipankar@in.ibm.com\nCc: mathieu.desnoyers@polymtl.ca\nCc: josh@joshtriplett.org\nCc: dvhltc@us.ibm.com\nCc: niv@us.ibm.com\nCc: peterz@infradead.org\nCc: rostedt@goodmis.org\nCc: Valdis.Kletnieks@vt.edu\nCc: dhowells@redhat.com\nCc: jens.axboe@oracle.com\nLKML-Reference: \u003c12555405592133-git-send-email-\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "b226f744d40b052ac126c4cb16c76f66e5185128", "tree": "e86f5c059dde241472689cbe2d55429cd15b2d56", "parents": [ "d5b889f2ecec7849e851ddd31c34bdfb3482b5de", "a3ccf63ee643ef243cbf8918da8b3f9238f10029" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Oct 15 08:44:42 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Oct 15 08:44:44 2009 +0200" }, "message": "Merge branch \u0027linus\u0027 into perf/core\n\nMerge reason: pick up tools/perf/ changes from upstream.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "d6047d79b90f6122fcbf2c3e783b507f7dd78fc6", "tree": "4091ff408dd6873609e3f3341b0b3972155b7201", "parents": [ "601adfedba37326410760d8d60f5da99a0adfd2f", "514fc01d389cf5d364ee3b5fec4ac1487448803e" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Oct 14 15:34:55 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Oct 14 15:34:55 2009 -0700" }, "message": "Merge branch \u0027tty-fixes\u0027\n\n* branch \u0027tty-fixes\u0027:\n tty: use the new \u0027flush_delayed_work()\u0027 helper to do ldisc flush\n workqueue: add \u0027flush_delayed_work()\u0027 to run and wait for delayed work\n Make flush_to_ldisc properly handle parallel calls\n" }, { "commit": "ee67e6cbe1121da1ae4eceb7b2bcb535c5cbf65e", "tree": "8ceefe56b6f325a4b8dbf0ee2dcda0d9216a52a3", "parents": [ "220a6258b1bac1f0b050a99aa8233330d6c8c416", "c7cedb125ba20cc531671dc667ad704baa667d97" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Oct 14 15:25:35 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Oct 14 15:25:35 2009 -0700" }, "message": "Merge branch \u0027core-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n oprofile: warn on freeing event buffer too early\n oprofile: fix race condition in event_buffer free\n lockdep: Use cpu_clock() for lockstat\n" }, { "commit": "f061d83a2b29f08b41c494335b7d23a432cb5a2d", "tree": "4b3fe2797968491f1e18e5ef52a9d08b37a2c301", "parents": [ "e345fe1ada6f91bf703ca080168745ef18b2f037", "e17b38bf9e70d74f3739a600db75240078ac1407" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Oct 14 15:25:04 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Oct 14 15:25:04 2009 -0700" }, "message": "Merge branch \u0027sched-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027sched-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n sched: Fix missing kernel-doc notation\n Revert \"x86, timers: Check for pending timers after (device) interrupts\"\n sched: Update the clock of runqueue select_task_rq() selected\n" }, { "commit": "e345fe1ada6f91bf703ca080168745ef18b2f037", "tree": "1e3598cd0ddc32afa79fe2f368ede4617fae24da", "parents": [ "ea876441052c2cebc27d9bd2a6f6b9bce6add408", "8ad807318fcd62aba0e18c7c7fbfcc1af3fcdbab" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Oct 14 15:24:51 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Oct 14 15:24:51 2009 -0700" }, "message": "Merge branch \u0027tracing-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027tracing-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n tracing/filters: Fix memory leak when setting a filter\n tracing: fix trace_vprintk call\n" }, { "commit": "8c53e46314562fe814b0afef6cfcbd2f562b017c", "tree": "e9b68a33c470a91967c5930438e93beeb3126c50", "parents": [ "c8e33141911bf8fe87dc6c92793b9a59b2be0130" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Oct 14 09:16:42 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Oct 14 15:11:35 2009 -0700" }, "message": "workqueue: add \u0027flush_delayed_work()\u0027 to run and wait for delayed work\n\nIt basically turns a delayed work into an immediate work, and then waits\nfor it to finish, thus allowing you to force (and wait for) an immediate\nflush of a delayed work.\n\nWe\u0027ll want to use this in the tty layer to clean up tty_flush_to_ldisc().\n\nAcked-by: Oleg Nesterov \u003coleg@redhat.com\u003e\n[ Fixed to use \u0027del_timer_sync()\u0027 as noted by Oleg ]\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2bc872036e1c5948b5b02942810bbdd8dbdb9812", "tree": "c91cc2791366214c5f924ff5aa77c24a7403fe40", "parents": [ "d58e6576b0deec6f0b9ff8450fe282da18c50883" ], "author": { "name": "Darren Hart", "email": "dvhltc@us.ibm.com", "time": "Wed Oct 14 10:12:39 2009 -0700" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Oct 14 22:00:14 2009 +0200" }, "message": "futex: Check for NULL keys in match_futex\n\nIf userspace tries to perform a requeue_pi on a non-requeue_pi waiter,\nit will find the futex_q-\u003erequeue_pi_key to be NULL and OOPS.\n\nCheck for NULL in match_futex() instead of doing explicit NULL pointer\nchecks on all call sites. While match_futex(NULL, NULL) returning\nfalse is a little odd, it\u0027s still correct as we expect valid key\nreferences.\n\nSigned-off-by: Darren Hart \u003cdvhltc@us.ibm.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCC: Eric Dumazet \u003ceric.dumazet@gmail.com\u003e\nCC: Dinakar Guniguntala \u003cdino@in.ibm.com\u003e\nCC: John Stultz \u003cjohnstul@us.ibm.com\u003e\nCc: stable@kernel.org\nLKML-Reference: \u003c4AD60687.10306@us.ibm.com\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "1beee96bae0daf7f491356777c3080cc436950f5", "tree": "08aa1380fce845680b15f6911100776439246954", "parents": [ "06f43d66ec36388056f5c697bf1e67c0e0a1645c" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Oct 14 20:50:32 2009 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Oct 14 20:55:55 2009 +0200" }, "message": "ftrace: Rename set_bootup_ftrace into set_cmdline_ftrace\n\nset_cmdline_ftrace is a better match against what does this function:\napply a tracer name from the kernel command line.\n\nReported-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\n" }, { "commit": "06f43d66ec36388056f5c697bf1e67c0e0a1645c", "tree": "04b8735f670570d146c0c12bb403effc94e14346", "parents": [ "459c6d15a0c52bae43842ff2cd0dd41aa7de9b7f" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Oct 14 20:43:39 2009 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Oct 14 20:43:39 2009 +0200" }, "message": "ftrace: Copy ftrace_graph_filter boot param using strlcpy\n\nWe are using strncpy in the wrong way to copy the ftrace_graph_filter\nboot param because we pass the buffer size instead of the max string\nsize it can contain (buffer size - 1). The end result might not be\nNULL terminated as we are abusing the max string size.\n\nLets use strlcpy() instead.\n\nReported-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "43046b606673c9c991919ff75b980b72541e9ede", "tree": "86e89561891ed7833bd8229c2d06734aede63fec", "parents": [ "45242006e19c6f99945554e4d7d5680caf6ed9ad" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Oct 14 09:16:42 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Oct 14 09:16:42 2009 -0700" }, "message": "workqueue: add \u0027flush_delayed_work()\u0027 to run and wait for delayed work\n\nIt basically turns a delayed work into an immediate work, and then waits\nfor it to finish.\n" }, { "commit": "92f6a5e37a2e2d3342dafb2b39c2f8bc340bbf84", "tree": "1e71e909fbf74b09863815549dbbe67d1661ab2b", "parents": [ "799e2205ec65e174f752b558c62a92c4752df313" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Fri Oct 09 12:43:07 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Oct 14 15:02:34 2009 +0200" }, "message": "sched: Do less agressive buddy clearing\n\nYanmin reported a hackbench regression due to:\n\n \u003e commit de69a80be32445b0a71e8e3b757e584d7beb90f7\n \u003e Author: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\n \u003e Date: Thu Sep 17 09:01:20 2009 +0200\n \u003e\n \u003e sched: Stop buddies from hogging the system\n\nI really liked de69a80b, and it affecting hackbench shows I wasn\u0027t\ncrazy ;-)\n\nSo hackbench is a multi-cast, with one sender spraying multiple\nreceivers, who in their turn don\u0027t spray back.\n\nThis would be exactly the scenario that patch \u0027cures\u0027. Previously\nwe would not clear the last buddy after running the next task,\nallowing the sender to get back to work sooner than it otherwise\nought to have been, increasing latencies for other tasks.\n\nNow, since those receivers don\u0027t poke back, they don\u0027t enforce the\nbuddy relation, which means there\u0027s nothing to re-elect the sender.\n\nCure this by less agressively clearing the buddy stats. Only clear\nbuddies when they were not chosen. It should still avoid a buddy\nsticking around long after its served its time.\n\nReported-by: \"Zhang, Yanmin\" \u003cyanmin_zhang@linux.intel.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCC: Mike Galbraith \u003cefault@gmx.de\u003e\nLKML-Reference: \u003c1255084986.8802.46.camel@laptop\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "c44fc770845163f8d9e573f37f92a7b7a7ade14e", "tree": "dac4327b1454b73cefe7ffb2ef28cc67ea878f2b", "parents": [ "4d8289494a37e19cd7f3beacea9c957ad3debad6" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Sat Sep 19 06:50:42 2009 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Oct 14 09:53:56 2009 +0200" }, "message": "tracing: Move syscalls metadata handling from arch to core\n\nMost of the syscalls metadata processing is done from arch.\nBut these operations are mostly generic accross archs. Especially now\nthat we have a common variable name that expresses the number of\nsyscalls supported by an arch: NR_syscalls, the only remaining bits\nthat need to reside in arch is the syscall nr to addr translation.\n\nv2: Compare syscalls symbols only after the \"sys\" prefix so that we\n avoid spurious mismatches with archs that have syscalls wrappers,\n in which case syscalls symbols have \"SyS\" prefixed aliases.\n (Reported by: Heiko Carstens)\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nAcked-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\n" }, { "commit": "03541f8b69c058162e4cf9675ec9181e6a204d55", "tree": "67cd314f717b1b455861d1cfb9761162a44096b3", "parents": [ "a003236c32706f3c1f74d4e3b98c58cf0d9a9d8f" ], "author": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Wed Oct 14 16:58:03 2009 +1100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Oct 14 08:39:32 2009 +0200" }, "message": "perf_event: Adjust frequency and unthrottle for non-group-leader events\n\nThe loop in perf_ctx_adjust_freq checks the frequency of sampling\nevent counters, and adjusts the event interval and unthrottles the\nevent if required, and resets the interrupt count for the event.\nHowever, at present it only looks at group leaders.\n\nThis means that a sampling event that is not a group leader will\neventually get throttled, once its interrupt count reaches\nsysctl_perf_event_sample_rate/HZ --- and that is guaranteed to\nhappen, if the event is active for long enough, since the interrupt\ncount never gets reset. Once it is throttled it never gets\nunthrottled, so it basically just stops working at that point.\n\nThis fixes it by making perf_ctx_adjust_freq use ctx-\u003eevent_list\nrather than ctx-\u003egroup_list. The existing spin_lock/spin_unlock\naround the loop makes it unnecessary to put rcu_read_lock/\nrcu_read_unlock around the list_for_each_entry_rcu().\n\nReported-by: Mark W. Krentel \u003ckrentel@cs.rice.edu\u003e\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Corey Ashford \u003ccjashfor@linux.vnet.ibm.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c19157.26731.855609.165622@cargo.ozlabs.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "5cb084bb1f3fd4dcdaf7e4cf564994346ec8f783", "tree": "0faf55a8a91ff69ae7cd0dff349dc5fbe27a53da", "parents": [ "756d17ee7ee4fbc8238bdf97100af63e6ac441ef" ], "author": { "name": "Jiri Olsa", "email": "jolsa@redhat.com", "time": "Tue Oct 13 16:33:53 2009 -0400" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Oct 14 08:13:54 2009 +0200" }, "message": "tracing: Enable records during the module load\n\nI was debuging some module using \"function\" and \"function_graph\"\ntracers and noticed, that if you load module after you enabled\ntracing, the module\u0027s hooks will convert only to NOP instructions.\n\nThe attached patch enables modules\u0027 hooks if there\u0027s function trace\nallready on, thus allowing to trace module functions.\n\nSigned-off-by: Jiri Olsa \u003cjolsa@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nLKML-Reference: \u003c20091013203425.896285120@goodmis.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "756d17ee7ee4fbc8238bdf97100af63e6ac441ef", "tree": "d0b794f4964be5689fc1bd64302969405000e18b", "parents": [ "194ec34184869f0de1cf255c924fc5299e1b3d27" ], "author": { "name": "jolsa@redhat.com", "email": "jolsa@redhat.com", "time": "Tue Oct 13 16:33:52 2009 -0400" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Oct 14 08:13:53 2009 +0200" }, "message": "tracing: Support multiple pids in set_pid_ftrace file\n\nAdding the possibility to set more than 1 pid in the set_pid_ftrace\nfile, thus allowing to trace more than 1 independent processes.\n\nUsage:\n\n sh-4.0# echo 284 \u003e ./set_ftrace_pid\n sh-4.0# cat ./set_ftrace_pid\n 284\n sh-4.0# echo 1 \u003e\u003e ./set_ftrace_pid\n sh-4.0# echo 0 \u003e\u003e ./set_ftrace_pid\n sh-4.0# cat ./set_ftrace_pid\n swapper tasks\n 1\n 284\n sh-4.0# echo 4 \u003e ./set_ftrace_pid\n sh-4.0# cat ./set_ftrace_pid\n 4\n sh-4.0# echo \u003e ./set_ftrace_pid\n sh-4.0# cat ./set_ftrace_pid\n no pid\n sh-4.0#\n\nSigned-off-by: Jiri Olsa \u003cjolsa@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c20091013203425.565454612@goodmis.org\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "d58e6576b0deec6f0b9ff8450fe282da18c50883", "tree": "d4838a745f90e60057194169cea796584946202e", "parents": [ "c7cedb125ba20cc531671dc667ad704baa667d97" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue Oct 13 20:40:43 2009 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Tue Oct 13 20:40:43 2009 +0200" }, "message": "futex: Handle spurious wake up\n\nThe futex code does not handle spurious wake up in futex_wait and\nfutex_wait_requeue_pi.\n\nThe code assumes that any wake up which was not caused by futex_wake /\nrequeue or by a timeout was caused by a signal wake up and returns one\nof the syscall restart error codes.\n\nIn case of a spurious wake up the signal delivery code which deals\nwith the restart error codes is not invoked and we return that error\ncode to user space. That causes applications which actually check the\nreturn codes to fail. Blaise reported that on preempt-rt a python test\nprogram run into a exception trap. -rt exposed that due to a built in\nspurious wake up accelerator :)\n\nSolve this by checking signal_pending(current) in the wake up path and\nhandle the spurious wake up case w/o returning to user space.\n\nReported-by: Blaise Gassend \u003cblaise@willowgarage.com\u003e\nDebugged-by: Darren Hart \u003cdvhltc@us.ibm.com\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: stable@kernel.org\nLKML-Reference: \u003cnew-submission\u003e\n" }, { "commit": "80f506918fdaaca6b574ba931536a58ce015c7be", "tree": "938bddf32e8c5dca114cb1a5f3ca2a62960accc8", "parents": [ "a3bafbbbb5ac49355aa35e6a722eac6ef1dff19a", "2ec24ff1d1875defa742c76c9c7d74dca06b7e1f" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 13 10:21:33 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Oct 13 10:21:33 2009 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.dk/linux-2.6-block\n\n* \u0027for-linus\u0027 of git://git.kernel.dk/linux-2.6-block:\n cciss: Add cciss_allow_hpsa module parameter\n cciss: Fix multiple calls to pci_release_regions\n blk-settings: fix function parameter kernel-doc notation\n writeback: kill space in debugfs item name\n writeback: account IO throttling wait as iowait\n elv_iosched_store(): fix strstrip() misuse\n cfq-iosched: avoid probable slice overrun when idling\n cfq-iosched: apply bool value where we return 0/1\n cfq-iosched: fix think time allowed for seekers\n cfq-iosched: fix the slice residual sign\n cfq-iosched: abstract out the \u0027may this cfqq dispatch\u0027 logic\n block: use proper BLK_RW_ASYNC in blk_queue_start_tag()\n block: Seperate read and write statistics of in_flight requests v2\n block: get rid of kblock_schedule_delayed_work()\n cfq-iosched: fix possible problem with jiffies wraparound\n cfq-iosched: fix issue with rq-rq merging and fifo list ordering\n" }, { "commit": "1bac0497ef9af8d933860672223e38bd6ac4934a", "tree": "8e569b0e7ed977a4659002632362855cc245990f", "parents": [ "2c96c142e941041973faab20ca3b82d57f435c5e", "bf7c5b43a12614847b83f507fb169ad30640e406" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Oct 13 12:03:08 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Oct 13 12:03:08 2009 +0200" }, "message": "Merge branch \u0027tracing/core\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into tracing/core\n" }, { "commit": "bf7c5b43a12614847b83f507fb169ad30640e406", "tree": "4867b7419f52fa2cc2d6268ed1a8fd7def9f9932", "parents": [ "aef6f81b55f462082699c06e8e67e6eb5630ed45" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Mon Oct 12 22:31:32 2009 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Oct 13 09:33:40 2009 +0200" }, "message": "tracing: Remove unused ftrace_trace_addr helper\n\nRemove the ftrace_trace_addr() function as only its off-case is\nimplemented and there are no users of it currently.\n\nBut we keep ftrace_graph_addr() off-case, in case someone come to use\nthe function graph tracer to profit from top-level callers filtering.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\n" }, { "commit": "aef6f81b55f462082699c06e8e67e6eb5630ed45", "tree": "f5d0bf2b89b0b3e91d23f9eb3dea5ebb0e6f39cc", "parents": [ "369bc18f9a6c4e2686204c1d7476ab684a720968" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Mon Oct 12 22:23:24 2009 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Oct 13 09:32:57 2009 +0200" }, "message": "tracing: Rename set_ftrace to set_bootup_ftrace\n\nDo this rename because set_ftrace is too much generic and not enough\nself-explainable as a name.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\n" }, { "commit": "9dbdd6c41c12fb42ee7188eafa7e1917b192af3a", "tree": "06a9eb894bc976c5c20e84ccd74fd82b9b71aed4", "parents": [ "7a693d3f0d10f978ebdf3082c41404ab97106567", "161291396e76e0832c08f617eb9bd364d1648148" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Oct 13 09:31:28 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Oct 13 09:31:34 2009 +0200" }, "message": "Merge commit \u0027v2.6.32-rc4\u0027 into perf/core\n\nMerge reason: we were on an -rc1 base, merge up to -rc4.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "2c96c142e941041973faab20ca3b82d57f435c5e", "tree": "45188f0ecb3f4bb7408a7219f8fcd041d500235a", "parents": [ "3c355863fb32070a2800f41106519c5c3038623a", "8ad807318fcd62aba0e18c7c7fbfcc1af3fcdbab" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Oct 13 09:24:51 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Oct 13 09:24:59 2009 +0200" }, "message": "Merge branch \u0027tracing/urgent\u0027 into tracing/core\n\nMerge reason: Pick up tracing/filters fix from the urgent queue,\n we will queue up dependent patches.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "8ad807318fcd62aba0e18c7c7fbfcc1af3fcdbab", "tree": "2e2d934ae03cc7e567b35bbca0de58e105a3b6b6", "parents": [ "a813a159766ee9d36aa1fc717c60d63325a6d077" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Tue Oct 13 09:28:57 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Oct 13 08:05:17 2009 +0200" }, "message": "tracing/filters: Fix memory leak when setting a filter\n\nEvery time we set a filter, we leak memory allocated by\npostfix_append_operand() and postfix_append_op().\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Tom Zanussi \u003ctzanussi@gmail.com\u003e\nCc: \u003cstable@kernel.org\u003e # for v2.6.31.x\nLKML-Reference: \u003c4AD3D7D9.4070400@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "369bc18f9a6c4e2686204c1d7476ab684a720968", "tree": "84606ab4244907d10b60fb091f2d2e23024ebbae", "parents": [ "3c355863fb32070a2800f41106519c5c3038623a" ], "author": { "name": "Stefan Assmann", "email": "sassmann@redhat.com", "time": "Mon Oct 12 22:17:21 2009 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Mon Oct 12 22:17:21 2009 +0200" }, "message": "ftrace: add kernel command line graph function filtering\n\nAdd a command line parameter to allow limiting the function graphs\nthat are traced on boot up from the given top-level callers , when\nftrace\u003dfunction_graph is specified.\n\nThis patch adds the following command line option:\nftrace_graph_filter\u003dfunction-list\n\nWhere function-list is a comma separated list of functions to filter.\n\n[fweisbec@gmail.com: picked the documentation changes from the v2 patch]\n\nSigned-off-by: Stefan Assmann \u003csassmann@redhat.com\u003e\nAcked-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nLKML-Reference: \u003c4AD2DEB9.2@redhat.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "e17b38bf9e70d74f3739a600db75240078ac1407", "tree": "356f252a6e2ff7d3b61d9c94b2a2d452ab6551d3", "parents": [ "e7ab0f7b50bc4688fb5cf65de5d42e3b882fb8d1" ], "author": { "name": "Randy Dunlap", "email": "randy.dunlap@oracle.com", "time": "Sun Oct 11 19:12:00 2009 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Oct 12 10:50:06 2009 +0200" }, "message": "sched: Fix missing kernel-doc notation\n\nThe following htmldocs warnings:\n\n Warning(kernel/sched.c:685): No description found for parameter \u0027cpu\u0027\n Warning(kernel/sched.c:3676): No description found for parameter \u0027sd\u0027\n\nTrigger because new parameters were added to update_rq_clock() and\nupdate_group_power() without updating the kernel-doc notation.\n\nSigned-off-by: Jaswinder Singh Rajput \u003cjaswinderrajput@gmail.com\u003e\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c4AD29070.7070002@oracle.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "d43c36dc6b357fa1806800f18aa30123c747a6d1", "tree": "339ce510073ecbe9b3592008f7dece7b277035ef", "parents": [ "69585dd69e663a40729492c7b52eb82477a2027a" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Wed Oct 07 17:09:06 2009 +0400" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Oct 11 11:20:58 2009 -0700" }, "message": "headers: remove sched.h from interrupt.h\n\nAfter m68k\u0027s task_thread_info() doesn\u0027t refer to current,\nit\u0027s possible to remove sched.h from interrupt.h and not break m68k!\nMany thanks to Heiko Carstens for allowing this.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\n" }, { "commit": "f5dc37530ba8a35aae0f7f4f13781d1904f71e94", "tree": "866894f6bf41876a7c6096912c82e73d140d3071", "parents": [ "36a07902c2134649c4af7f07980413ffb1a56085" ], "author": { "name": "Mike Galbraith", "email": "efault@gmx.de", "time": "Fri Oct 09 08:35:03 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Oct 09 15:58:11 2009 +0200" }, "message": "sched: Update the clock of runqueue select_task_rq() selected\n\nIn try_to_wake_up(), we update the runqueue clock, but\nselect_task_rq() may select a different runqueue than the one we\nupdated, leaving the new runqueue\u0027s clock stale for a bit.\n\nThis patch cures occasional huge latencies reported by latencytop\nwhen coming out of idle on a mostly idle NO_HZ box.\n\nSigned-off-by: Mike Galbraith \u003cefault@gmx.de\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c1255070103.7639.30.camel@marge.simson.net\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "3365e7798760dc6c190a9bbb0945a38f02625438", "tree": "c3c1b49dcf4c2fcbddf1af27c281c9a7a55219ad", "parents": [ "36a07902c2134649c4af7f07980413ffb1a56085" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Fri Oct 09 10:12:41 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Oct 09 15:56:44 2009 +0200" }, "message": "lockdep: Use cpu_clock() for lockstat\n\nSome tracepoint magic (TRACE_EVENT(lock_acquired)) relies on\nthe fact that lock hold times are positive and uses div64 on\nthat. That triggered a build warning on MIPS, and probably\ncauses bad output in certain circumstances as well.\n\nMake it truly positive.\n\nReported-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLKML-Reference: \u003c1254818502.21044.112.camel@laptop\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "d25105e8911bff1dbd68e387f12901c5b1a15fe8", "tree": "bcb94e898b9f3b0322db74473e4dd319a16308e2", "parents": [ "8c279598585e4992a41016bb973993ed15888cb3" ], "author": { "name": "Wu Fengguang", "email": "fengguang.wu@intel.com", "time": "Fri Oct 09 12:40:42 2009 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Oct 09 12:40:42 2009 +0200" }, "message": "writeback: account IO throttling wait as iowait\n\nIt makes sense to do IOWAIT when someone is blocked\ndue to IO throttle, as suggested by Kame and Peter.\n\nThere is an old comment for not doing IOWAIT on throttle,\nhowever it has been mismatching the code for a long time.\n\nIf we stop accounting IOWAIT for 2.6.32, it could be an\nundesirable behavior change. So restore the io_schedule.\n\nCC: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCC: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "a813a159766ee9d36aa1fc717c60d63325a6d077", "tree": "a895e702adea43c61f2890424c800d1f99a24f5c", "parents": [ "8f6e8a314ab37cadd72da5ace9027f2d04aba854" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Oct 09 01:41:35 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Oct 09 01:41:35 2009 -0400" }, "message": "tracing: fix trace_vprintk call\n\nThe addition of trace_array_{v}printk used the wrong function for\ntrace_vprintk to call. This broke trace_marker and trace_vprintk\nitself. Although trace_printk may not have been affected by those\nthat end up calling trace_vbprintk.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "f579bbcd9bb8b688df03191b92c56ab8af4d6322", "tree": "d450f986022aab73f86f794a03c7f21ad0ece8ec", "parents": [ "e80fb7e52fd305b916a671755ca31ecf8f92e94e", "da085681014fb43d67d9bf6d14bc068e9254bd49" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 08 12:16:35 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 08 12:16:35 2009 -0700" }, "message": "Merge branch \u0027core-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n futex: fix requeue_pi key imbalance\n futex: Fix typo in FUTEX_WAIT/WAKE_BITSET_PRIVATE definitions\n rcu: Place root rcu_node structure in separate lockdep class\n rcu: Make hot-unplugged CPU relinquish its own RCU callbacks\n rcu: Move rcu_barrier() to rcutree\n futex: Move exit_pi_state() call to release_mm()\n futex: Nullify robust lists after cleanup\n futex: Fix locking imbalance\n panic: Fix panic message visibility by calling bust_spinlocks(0) before dying\n rcu: Replace the rcu_barrier enum with pointer to call_rcu*() function\n rcu: Clean up code based on review feedback from Josh Triplett, part 4\n rcu: Clean up code based on review feedback from Josh Triplett, part 3\n rcu: Fix rcu_lock_map build failure on CONFIG_PROVE_LOCKING\u003dy\n rcu: Clean up code to address Ingo\u0027s checkpatch feedback\n rcu: Clean up code based on review feedback from Josh Triplett, part 2\n rcu: Clean up code based on review feedback from Josh Triplett\n" }, { "commit": "e80fb7e52fd305b916a671755ca31ecf8f92e94e", "tree": "476b8d77b6c59a3da6c6e7c30958b9912a904944", "parents": [ "624235c5b3a62639136b7823c2c88e4aeb5c5a8d", "f83f9ac2632732bd1678150b5a03d152f912fe72" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 08 12:07:24 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 08 12:07:24 2009 -0700" }, "message": "Merge branch \u0027sched-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027sched-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n sched: Set correct normal_prio and prio values in sched_fork()\n" }, { "commit": "f17f36bb1c006818441b84cf65a6decf3e59942b", "tree": "865b308feea81c3c399669e9ec191a4cdad3265b", "parents": [ "b924f9599dfd4a604761e84b1e920e480fb57f66", "8f6e8a314ab37cadd72da5ace9027f2d04aba854" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 08 12:06:09 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 08 12:06:09 2009 -0700" }, "message": "Merge branch \u0027tracing-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027tracing-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n tracing: user local buffer variable for trace branch tracer\n tracing: fix warning on kernel/trace/trace_branch.c andtrace_hw_branches.c\n ftrace: check for failure for all conversions\n tracing: correct module boundaries for ftrace_release\n tracing: fix transposed numbers of lock_depth and preempt_count\n trace: Fix missing assignment in trace_ctxwake_*\n tracing: Use free_percpu instead of kfree\n tracing: Check total refcount before releasing bufs in profile_enable failure\n" }, { "commit": "b924f9599dfd4a604761e84b1e920e480fb57f66", "tree": "a1456ef8aea8beb8415d8258a978e072467d8ff6", "parents": [ "b9d40b7b1e349bdc5c174b4ef1a333e62f7d749c", "2dca6999eed58d44b67e9de7d6ec230f6250553d" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 08 12:05:50 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 08 12:05:50 2009 -0700" }, "message": "Merge branch \u0027sparc-perf-events-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027sparc-perf-events-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n mm, perf_event: Make vmalloc_user() align base kernel virtual address to SHMLBA\n perf_event: Provide vmalloc() based mmap() backing\n" }, { "commit": "b9d40b7b1e349bdc5c174b4ef1a333e62f7d749c", "tree": "f5c2d85ffb1f1dd21ae8254723ea9c595cf200d5", "parents": [ "7c1632ba76d94b4847fde79f67faa91ef8571fe9", "e13dbd7d75d1ecc315c6e3071b3c4e8fba4f6bec" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 08 12:05:00 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 08 12:05:00 2009 -0700" }, "message": "Merge branch \u0027perf-fixes-for-linus-2\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027perf-fixes-for-linus-2\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n perf_events: Make ABI definitions available to userspace\n perf tools: elf_sym__is_function() should accept \"zero\" sized functions\n tracing/syscalls: Use long for syscall ret format and field definitions\n perf trace: Update eval_flag() flags array to match interrupt.h\n perf trace: Remove unused code in builtin-trace.c\n perf: Propagate term signal to child\n" }, { "commit": "8f6e8a314ab37cadd72da5ace9027f2d04aba854", "tree": "2ce9adc1a11cd6d31742d07a557b787d6f0ceb74", "parents": [ "c8647b28726b09b087155417bb698e7b3789f8a0" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Oct 07 21:53:41 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed Oct 07 21:53:41 2009 -0400" }, "message": "tracing: user local buffer variable for trace branch tracer\n\nJust using the tr-\u003ebuffer for the API to trace_buffer_lock_reserve\nis not good enough. This is because the tr-\u003ebuffer may change, and we\ndo not want to commit with a different buffer that we reserved from.\n\nThis patch uses a local variable to hold the buffer that was used to\nreserve and commit with.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "c8647b28726b09b087155417bb698e7b3789f8a0", "tree": "44300cbb5bfb317ce116227ec38ba33471425173", "parents": [ "3279ba37db5d65c4ab0dcdee3b211ccb85bb563f" ], "author": { "name": "Zhenwen Xu", "email": "helight.xu@gmail.com", "time": "Thu Oct 08 09:21:46 2009 +0800" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed Oct 07 21:52:03 2009 -0400" }, "message": "tracing: fix warning on kernel/trace/trace_branch.c andtrace_hw_branches.c\n\nfix warnings that caused the API change of trace_buffer_lock_reserve()\nchange files: kernel/trace/trace_hw_branch.c\n kernel/trace/trace_branch.c\n\nSigned-off-by: Zhenwen Xu \u003chelight.xu@gmail.com\u003e\nLKML-Reference: \u003c20091008012146.GA4170@helight\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "3279ba37db5d65c4ab0dcdee3b211ccb85bb563f", "tree": "e0051b9110b15187c4aaaa980749ab829f2e8427", "parents": [ "e7247a15ff3bbdab0a8b402dffa1171e5c05a8e0" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Oct 07 16:57:56 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed Oct 07 17:22:24 2009 -0400" }, "message": "ftrace: check for failure for all conversions\n\nDue to legacy code from back when the dynamic tracer used a daemon,\nonly core kernel code was checking for failures. This is no longer\nthe case. We must check for failures any time we perform text modifications.\n\nCc: stable@kernel.org\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" } ], "next": "e7247a15ff3bbdab0a8b402dffa1171e5c05a8e0" }