)]}' { "log": [ { "commit": "351f8f8e6499ae4fff40f5e3a8fe16d9e1903646", "tree": "9393c8d3a6a1eaa9dba50932eb6de3017a8afe86", "parents": [ "b8cb464e4a8abc60ad5a43e0375fec8a3c728167" ], "author": { "name": "Amerigo Wang", "email": "amwang@redhat.com", "time": "Wed Jan 12 16:59:39 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 13 08:03:08 2011 -0800" }, "message": "kernel: clean up USE_GENERIC_SMP_HELPERS\n\nFor arch which needs USE_GENERIC_SMP_HELPERS, it has to select\nUSE_GENERIC_SMP_HELPERS, rather than leaving a choice to user, since they\ndon\u0027t provide their own implementions.\n\nAlso, move on_each_cpu() to kernel/smp.c, it is strange to put it in\nkernel/softirq.c.\n\nFor arch which doesn\u0027t use USE_GENERIC_SMP_HELPERS, e.g. blackfin, only\non_each_cpu() is compiled.\n\nSigned-off-by: Amerigo Wang \u003camwang@redhat.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: \"H. Peter Anvin\" \u003chpa@zytor.com\u003e\nCc: Yinghai Lu \u003cyinghai@kernel.org\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "42776163e13a56ea3096edff7a5df95408e80eb4", "tree": "92f17bb5dadc7261b2d9238244cd8d4cb6c1bfd7", "parents": [ "edb2877f4a62647e36e20839a786f94d688a06ed", "3d03e2ea74103a50c23d6ab1906cf73399c0dafb" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 11 11:02:13 2011 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 11 11:02:13 2011 -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: (28 commits)\n perf session: Fix infinite loop in __perf_session__process_events\n perf evsel: Support perf_evsel__open(cpus \u003e 1 \u0026\u0026 threads \u003e 1)\n perf sched: Use PTHREAD_STACK_MIN to avoid pthread_attr_setstacksize() fail\n perf tools: Emit clearer message for sys_perf_event_open ENOENT return\n perf stat: better error message for unsupported events\n perf sched: Fix allocation result check\n perf, x86: P4 PMU - Fix unflagged overflows handling\n dynamic debug: Fix build issue with older gcc\n tracing: Fix TRACE_EVENT power tracepoint creation\n tracing: Fix preempt count leak\n tracepoint: Add __rcu annotation\n tracing: remove duplicate null-pointer check in skb tracepoint\n tracing/trivial: Add missing comma in TRACE_EVENT comment\n tracing: Include module.h in define_trace.h\n x86: Save rbp in pt_regs on irq entry\n x86, dumpstack: Fix unused variable warning\n x86, NMI: Clean-up default_do_nmi()\n x86, NMI: Allow NMI reason io port (0x61) to be processed on any CPU\n x86, NMI: Remove DIE_NMI_IPI\n x86, NMI: Add priorities to handlers\n ...\n" }, { "commit": "870915e047a2da695be118d32dd5a900f0c3e933", "tree": "5d816db36d55d7b78b58dbb1d60a127d528ebb06", "parents": [ "1dbd1951f39e13da579ffe879cce19586d0462de" ], "author": { "name": "Mathieu Desnoyers", "email": "mathieu.desnoyers@efficios.com", "time": "Thu Oct 28 11:31:17 2010 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Jan 07 23:26:29 2011 -0500" }, "message": "tracing: Fix TRACE_EVENT power tracepoint creation\n\nDEFINE_TRACE should also exist when CONFIG_EVENT_TRACING\u003dn. Otherwise, setting\nonly TRACEPOINTS\u003dy is broken.\n\nAcked-by: Arjan van de Ven \u003carjan@linux.intel.com\u003e\nSigned-off-by: Mathieu Desnoyers \u003cmathieu.desnoyers@efficios.com\u003e\nLKML-Reference: \u003c20101028153117.GA4051@Krystal\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "41263fc6716dea402125c95f38ed83ebf59d5172", "tree": "b38af603d534914187e396c989fc01a20894a2ff", "parents": [ "ba9effa2ecdc08325bd297d541b4207b2df38184" ], "author": { "name": "Ben Gardiner", "email": "bengardiner@nanometrics.ca", "time": "Tue Dec 14 11:39:44 2010 -0500" }, "committer": { "name": "Michal Marek", "email": "mmarek@suse.cz", "time": "Tue Dec 14 23:05:02 2010 +0100" }, "message": "kbuild: fix interaction of CONFIG_IKCONFIG and KCONFIG_CONFIG\n\nIf you try to build a kernel with KCONFIG_CONFIG set (to a value\nnot equal to .config) and that config sets CONFIG_IKCONFIG then the\nbuild will fail with:\n\nmake[1]: *** No rule to make target `.config\u0027, needed by \\\n`kernel/config_data.gz\u0027. Stop.\n\nbecause the kernel/Makefile contains a direct reference to .config.\n\nThis issue has been present since the introduction of KCONFIG_CONFIG\nin 14cdd3c402bf7c66f0bcd76e290f0770a54a4b21.\n\nSigned-off-by: Ben Gardiner \u003cbengardiner@nanometrics.ca\u003e\nCC: Roman Zippel \u003czippel@linux-m68k.org\u003e\nCC: Michal Marek \u003cmmarek@suse.cz\u003e\nReviewed-by: Michal Marek \u003cmmarek@suse.cz\u003e\nSigned-off-by: Michal Marek \u003cmmarek@suse.cz\u003e\n" }, { "commit": "3044100e58c84e133791c8b60a2f5bef69d732e4", "tree": "f9ed0d1f3df89c31dd81ccaf0cf3478f57b08440", "parents": [ "b5153163ed580e00c67bdfecb02b2e3843817b3e", "67e87f0a1c5cbc750f81ebf6a128e8ff6f4376cc" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 21 18:52:11 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 21 18:52:11 2010 -0700" }, "message": "Merge branch \u0027core-memblock-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core-memblock-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (74 commits)\n x86-64: Only set max_pfn_mapped to 512 MiB if we enter via head_64.S\n xen: Cope with unmapped pages when initializing kernel pagetable\n memblock, bootmem: Round pfn properly for memory and reserved regions\n memblock: Annotate memblock functions with __init_memblock\n memblock: Allow memblock_init to be called early\n memblock/arm: Fix memblock_region_is_memory() typo\n x86, memblock: Remove __memblock_x86_find_in_range_size()\n memblock: Fix wraparound in find_region()\n x86-32, memblock: Make add_highpages honor early reserved ranges\n x86, memblock: Fix crashkernel allocation\n arm, memblock: Fix the sparsemem build\n memblock: Fix section mismatch warnings\n powerpc, memblock: Fix memblock API change fallout\n memblock, microblaze: Fix memblock API change fallout\n x86: Remove old bootmem code\n x86, memblock: Use memblock_memory_size()/memblock_free_memory_size() to get correct dma_reserve\n x86: Remove not used early_res code\n x86, memblock: Replace e820_/_early string with memblock_\n x86: Use memblock to replace early_res\n x86, memblock: Use memblock_debug to control debug message print out\n ...\n\nFix up trivial conflicts in arch/x86/kernel/setup.c and kernel/Makefile\n" }, { "commit": "5d70f79b5ef6ea2de4f72a37b2d96e2601e40a22", "tree": "a0d6de0930ba83ecf4629c2e2e261f5eaa2d8f33", "parents": [ "888a6f77e0418b049f83d37547c209b904d30af4", "750ed158bf6c782d2813da1bca2c824365a0b777" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 21 12:54:49 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Oct 21 12:54:49 2010 -0700" }, "message": "Merge branch \u0027perf-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027perf-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (163 commits)\n tracing: Fix compile issue for trace_sched_wakeup.c\n [S390] hardirq: remove pointless header file includes\n [IA64] Move local_softirq_pending() definition\n perf, powerpc: Fix power_pmu_event_init to not use event-\u003ectx\n ftrace: Remove recursion between recordmcount and scripts/mod/empty\n jump_label: Add COND_STMT(), reducer wrappery\n perf: Optimize sw events\n perf: Use jump_labels to optimize the scheduler hooks\n jump_label: Add atomic_t interface\n jump_label: Use more consistent naming\n perf, hw_breakpoint: Fix crash in hw_breakpoint creation\n perf: Find task before event alloc\n perf: Fix task refcount bugs\n perf: Fix group moving\n irq_work: Add generic hardirq context callbacks\n perf_events: Fix transaction recovery in group_sched_in()\n perf_events: Fix bogus AMD64 generic TLB events\n perf_events: Fix bogus context time tracking\n tracing: Remove parent recording in latency tracer graph options\n tracing: Use one prologue for the preempt irqs off tracer function tracers\n ...\n" }, { "commit": "e360adbe29241a0194e10e20595360dd7b98a2b3", "tree": "ef5fa5f50a895096bfb25bc11b25949603158238", "parents": [ "8e5fc1a7320baf6076391607515dceb61319b36a" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Thu Oct 14 14:01:34 2010 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Oct 18 19:58:50 2010 +0200" }, "message": "irq_work: Add generic hardirq context callbacks\n\nProvide a mechanism that allows running code in IRQ context. It is\nmost useful for NMI code that needs to interact with the rest of the\nsystem -- like wakeup a task to drain buffers.\n\nPerf currently has such a mechanism, so extract that and provide it as\na generic feature, independent of perf so that others may also\nbenefit.\n\nThe IRQ context callback is generated through self-IPIs where\npossible, or on architectures like powerpc the decrementer (the\nbuilt-in timer facility) is set to generate an interrupt immediately.\n\nArchitectures that don\u0027t have anything like this get to do with a\ncallback from the timer tick. These architectures can call\nirq_work_run() at the tail of any IRQ handlers that might enqueue such\nwork (like the perf IRQ handler) to avoid undue latencies in\nprocessing the work.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Kyle McMartin \u003ckyle@mcmartin.ca\u003e\nAcked-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\n[ various fixes ]\nSigned-off-by: Huang Ying \u003cying.huang@intel.com\u003e\nLKML-Reference: \u003c1287036094.7768.291.camel@yhuang-dev\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "bf5438fca2950b03c21ad868090cc1a8fcd49536", "tree": "9fc5693763263704de8d8ba1c37a84172dbe5eb7", "parents": [ "fa6f2cc77081792e4edca9168420a3422299ef15" ], "author": { "name": "Jason Baron", "email": "jbaron@redhat.com", "time": "Fri Sep 17 11:09:00 2010 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed Sep 22 16:29:41 2010 -0400" }, "message": "jump label: Base patch for jump label\n\nbase patch to implement \u0027jump labeling\u0027. Based on a new \u0027asm goto\u0027 inline\nassembly gcc mechanism, we can now branch to labels from an \u0027asm goto\u0027\nstatment. This allows us to create a \u0027no-op\u0027 fastpath, which can subsequently\nbe patched with a jump to the slowpath code. This is useful for code which\nmight be rarely used, but which we\u0027d like to be able to call, if needed.\nTracepoints are the current usecase that these are being implemented for.\n\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nSigned-off-by: Jason Baron \u003cjbaron@redhat.com\u003e\nLKML-Reference: \u003cee8b3595967989fdaf84e698dc7447d315ce972a.1284733808.git.jbaron@redhat.com\u003e\n\n[ cleaned up some formating ]\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "daab7fc734a53fdeaf844b7c03053118ad1769da", "tree": "575deb3cdcc6dda562acaed6f7c29bc81ae01cf2", "parents": [ "774ea0bcb27f57b6fd521b3b6c43237782fed4b9", "2bfc96a127bc1cc94d26bfaa40159966064f9c8c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Aug 31 09:45:21 2010 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Aug 31 09:45:46 2010 +0200" }, "message": "Merge commit \u0027v2.6.36-rc3\u0027 into x86/memblock\n\nConflicts:\n\tarch/x86/kernel/trampoline.c\n\tmm/memblock.c\n\nMerge reason: Resolve the conflicts, update to latest upstream.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "a587d2daebcd2bc159d4348b6a7b028950a6d803", "tree": "8001158a76efe400600a4e54dc5dae384b32b6e5", "parents": [ "a9ce6bc15100023b411f8117e53a016d61889800" ], "author": { "name": "Yinghai Lu", "email": "yinghai@kernel.org", "time": "Wed Aug 25 13:39:18 2010 -0700" }, "committer": { "name": "H. Peter Anvin", "email": "hpa@zytor.com", "time": "Fri Aug 27 11:13:51 2010 -0700" }, "message": "x86: Remove not used early_res code\n\nand some functions in e820.c that are not used anymore\n\nSigned-off-by: Yinghai Lu \u003cyinghai@kernel.org\u003e\nSigned-off-by: H. Peter Anvin \u003chpa@zytor.com\u003e\n" }, { "commit": "a57eb940d130477a799dfb24a570ee04979c0f7f", "tree": "5add1c135a302cf1c1a454b0620ed17eb802923b", "parents": [ "4d87ffadbba88105f33271bef5f2c79366c6a4e1" ], "author": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Tue Jun 29 16:49:16 2010 -0700" }, "committer": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Fri Aug 20 08:55:00 2010 -0700" }, "message": "rcu: Add a TINY_PREEMPT_RCU\n\nImplement a small-memory-footprint uniprocessor-only implementation of\npreemptible RCU. This implementation uses but a single blocked-tasks\nlist rather than the combinatorial number used per leaf rcu_node by\nTREE_PREEMPT_RCU, which reduces memory consumption and greatly simplifies\nprocessing. This version also takes advantage of uniprocessor execution\nto accelerate grace periods in the case where there are no readers.\n\nThe general design is otherwise broadly similar to that of TREE_PREEMPT_RCU.\n\nThis implementation is a step towards having RCU implementation driven\noff of the SMP and PREEMPT kernel configuration variables, which can\nhappen once this implementation has accumulated sufficient experience.\n\nRemoved ACCESS_ONCE() from __rcu_read_unlock() and added barrier() as\nsuggested by Steve Rostedt in order to avoid the compiler-reordering\nissue noted by Mathieu Desnoyers (http://lkml.org/lkml/2010/8/16/183).\n\nAs can be seen below, CONFIG_TINY_PREEMPT_RCU represents almost 5Kbyte\nsavings compared to CONFIG_TREE_PREEMPT_RCU. Of course, for non-real-time\nworkloads, CONFIG_TINY_RCU is even better.\n\n\tCONFIG_TREE_PREEMPT_RCU\n\n\t text\t data\t bss\t dec\t filename\n\t 13\t 0\t 0\t 13\t kernel/rcupdate.o\n\t 6170\t 825\t 28\t 7023\t kernel/rcutree.o\n\t\t\t\t ----\n\t\t\t\t 7026 Total\n\n\tCONFIG_TINY_PREEMPT_RCU\n\n\t text\t data\t bss\t dec\t filename\n\t 13\t 0\t 0\t 13\t kernel/rcupdate.o\n\t 2081\t 81\t 8\t 2170\t kernel/rcutiny.o\n\t\t\t\t ----\n\t\t\t\t 2183 Total\n\n\tCONFIG_TINY_RCU (non-preemptible)\n\n\t text\t data\t bss\t dec\t filename\n\t 13\t 0\t 0\t 13\t kernel/rcupdate.o\n\t 719\t 25\t 0\t 744\t kernel/rcutiny.o\n\t\t\t\t ---\n\t\t\t\t 757 Total\n\nRequested-by: Loïc Minier \u003cloic.minier@canonical.com\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n" }, { "commit": "8c8946f509a494769a8c602b5ed189df01917d39", "tree": "dfd96bd6ca5ea6803c6d77f65ba37e04f78b2d3b", "parents": [ "5f248c9c251c60af3403902b26e08de43964ea0b", "1968f5eed54ce47bde488fd9a450912e4a2d7138" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Aug 10 11:39:13 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Aug 10 11:39:13 2010 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.infradead.org/users/eparis/notify\n\n* \u0027for-linus\u0027 of git://git.infradead.org/users/eparis/notify: (132 commits)\n fanotify: use both marks when possible\n fsnotify: pass both the vfsmount mark and inode mark\n fsnotify: walk the inode and vfsmount lists simultaneously\n fsnotify: rework ignored mark flushing\n fsnotify: remove global fsnotify groups lists\n fsnotify: remove group-\u003emask\n fsnotify: remove the global masks\n fsnotify: cleanup should_send_event\n fanotify: use the mark in handler functions\n audit: use the mark in handler functions\n dnotify: use the mark in handler functions\n inotify: use the mark in handler functions\n fsnotify: send fsnotify_mark to groups in event handling functions\n fsnotify: Exchange list heads instead of moving elements\n fsnotify: srcu to protect read side of inode and vfsmount locks\n fsnotify: use an explicit flag to indicate fsnotify_destroy_mark has been called\n fsnotify: use _rcu functions for mark list traversal\n fsnotify: place marks on object in order of group memory address\n vfs/fsnotify: fsnotify_close can delay the final work in fput\n fsnotify: store struct file not struct path\n ...\n\nFix up trivial delete/modify conflict in fs/notify/inotify/inotify.c.\n" }, { "commit": "3b7433b8a8a83c87972065b1852b7dcae691e464", "tree": "93fa2c003f8baef5ab0733b53bac77961ed5240c", "parents": [ "4a386c3e177ca2fbc70c9283d0b46537844763a0", "6ee0578b4daaea01c96b172c6aacca43fd9807a6" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Aug 07 12:42:58 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Aug 07 12:42:58 2010 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: (55 commits)\n workqueue: mark init_workqueues() as early_initcall()\n workqueue: explain for_each_*cwq_cpu() iterators\n fscache: fix build on !CONFIG_SYSCTL\n slow-work: kill it\n gfs2: use workqueue instead of slow-work\n drm: use workqueue instead of slow-work\n cifs: use workqueue instead of slow-work\n fscache: drop references to slow-work\n fscache: convert operation to use workqueue instead of slow-work\n fscache: convert object to use workqueue instead of slow-work\n workqueue: fix how cpu number is stored in work-\u003edata\n workqueue: fix mayday_mask handling on UP\n workqueue: fix build problem on !CONFIG_SMP\n workqueue: fix locking in retry path of maybe_create_worker()\n async: use workqueue for worker pool\n workqueue: remove WQ_SINGLE_CPU and use WQ_UNBOUND instead\n workqueue: implement unbound workqueue\n workqueue: prepare for WQ_UNBOUND implementation\n libata: take advantage of cmwq and remove concurrency limitations\n workqueue: fix worker management invocation without pending works\n ...\n\nFixed up conflicts in fs/cifs/* as per Tejun. Other trivial conflicts in\ninclude/linux/workqueue.h, kernel/trace/Kconfig and kernel/workqueue.c\n" }, { "commit": "61be7fdec2f51b99570cd5dcc30c7848c8e56513", "tree": "4a73ee635bc3e35dc54f75caddd26ffb6238bb5c", "parents": [ "12a81c8df13c60904febcafcf6b90ca1acb67122", "eb703f98191a505f78d0066712ad67d5dedc4c90" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Aug 05 08:45:05 2010 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Aug 05 08:45:05 2010 +0200" }, "message": "Merge branch \u0027perf/nmi\u0027 into perf/core\n\nConflicts:\n\tkernel/Makefile\n\nMerge reason: Add the now complete topic, fix the conflict.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "939a67fc4cbab8ca11c90da8a769d7e965d66a9b", "tree": "973363dabb2e84aa18e0ce1bbaf794be434e3901", "parents": [ "67640b602f68332a83808426911636e9dbcc71fe" ], "author": { "name": "Eric Paris", "email": "eparis@redhat.com", "time": "Thu Dec 17 20:12:06 2009 -0500" }, "committer": { "name": "Eric Paris", "email": "eparis@redhat.com", "time": "Wed Jul 28 09:58:19 2010 -0400" }, "message": "Audit: split audit watch Kconfig\n\nAudit watch should depend on CONFIG_AUDIT_SYSCALL and should select\nFSNOTIFY. This splits the spagetti like mixing of audit_watch and\naudit_filter code so they can be configured seperately.\n\nSigned-off-by: Eric Paris \u003ceparis@redhat.com\u003e\n" }, { "commit": "181a51f6e040d0ac006d6adaf4a031ffa440f41c", "tree": "ed06062b8c606149497dffbb6a6ef0548cc44911", "parents": [ "6ecd7c2dd9f5dd4f6e8f65c8027159f9c73b0e4c" ], "author": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Tue Jul 20 22:09:02 2010 +0200" }, "committer": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Fri Jul 23 13:14:49 2010 +0200" }, "message": "slow-work: kill it\n\nslow-work doesn\u0027t have any user left. Kill it.\n\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nAcked-by: David Howells \u003cdhowells@redhat.com\u003e\n" }, { "commit": "c433820971ffa854feda6adc17f5f24201354f11", "tree": "efb8028cc56e36eeade40d3a96bb461a242bab51", "parents": [ "a0fe3cc5d36a5f5b4f60abfe1a4b1caf4a5cce5a" ], "author": { "name": "Jason Wessel", "email": "jason.wessel@windriver.com", "time": "Tue May 19 07:49:32 2009 -0500" }, "committer": { "name": "Jason Wessel", "email": "jason.wessel@windriver.com", "time": "Thu May 20 21:04:18 2010 -0500" }, "message": "Move kernel/kgdb.c to kernel/debug/debug_core.c\n\nMove kgdb.c in preparation to separate the gdbstub from the debug\ncore and exception handling.\n\nCC: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Jason Wessel \u003cjason.wessel@windriver.com\u003e\n" }, { "commit": "58687acba59266735adb8ccd9b5b9aa2c7cd205b", "tree": "7236582375310b116eedec6facbee87d42e3dd6d", "parents": [ "a9aa1d02de36b450990b0e25a88fc2ff1c3e6b94" ], "author": { "name": "Don Zickus", "email": "dzickus@redhat.com", "time": "Fri May 07 17:11:44 2010 -0400" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed May 12 23:55:33 2010 +0200" }, "message": "lockup_detector: Combine nmi_watchdog and softlockup detector\n\nThe new nmi_watchdog (which uses the perf event subsystem) is very\nsimilar in structure to the softlockup detector. Using Ingo\u0027s\nsuggestion, I combined the two functionalities into one file:\nkernel/watchdog.c.\n\nNow both the nmi_watchdog (or hardlockup detector) and softlockup\ndetector sit on top of the perf event subsystem, which is run every\n60 seconds or so to see if there are any lockups.\n\nTo detect hardlockups, cpus not responding to interrupts, I\nimplemented an hrtimer that runs 5 times for every perf event\noverflow event. If that stops counting on a cpu, then the cpu is\nmost likely in trouble.\n\nTo detect softlockups, tasks not yielding to the scheduler, I used the\nprevious kthread idea that now gets kicked every time the hrtimer fires.\nIf the kthread isn\u0027t being scheduled neither is anyone else and the\nwarning is printed to the console.\n\nI tested this on x86_64 and both the softlockup and hardlockup paths\nwork.\n\nV2:\n- cleaned up the Kconfig and softlockup combination\n- surrounded hardlockup cases with #ifdef CONFIG_PERF_EVENTS_NMI\n- seperated out the softlockup case from perf event subsystem\n- re-arranged the enabling/disabling nmi watchdog from proc space\n- added cpumasks for hardlockup failure cases\n- removed fallback to soft events if no PMU exists for hard events\n\nV3:\n- comment cleanups\n- drop support for older softlockup code\n- per_cpu cleanups\n- completely remove software clock base hardlockup detector\n- use per_cpu masking on hard/soft lockup detection\n- #ifdef cleanups\n- rename config option NMI_WATCHDOG to LOCKUP_DETECTOR\n- documentation additions\n\nV4:\n- documentation fixes\n- convert per_cpu to __get_cpu_var\n- powerpc compile fixes\n\nV5:\n- split apart warn flags for hard and soft lockups\n\nTODO:\n- figure out how to make an arch-agnostic clock2cycles call\n (if possible) to feed into perf events as a sample period\n\n[fweisbec: merged conflict patch]\n\nSigned-off-by: Don Zickus \u003cdzickus@redhat.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Cyrill Gorcunov \u003cgorcunov@gmail.com\u003e\nCc: Eric Paris \u003ceparis@redhat.com\u003e\nCc: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nLKML-Reference: \u003c1273266711-18706-2-git-send-email-dzickus@redhat.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "a9aa1d02de36b450990b0e25a88fc2ff1c3e6b94", "tree": "1f9d19f1642d263e65906a916a48be9339accc73", "parents": [ "5671a10e2bc7f99d9157c6044faf8be2ef302361", "b57f95a38233a2e73b679bea4a5453a1cc2a1cc9" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed May 12 23:19:01 2010 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed May 12 23:20:33 2010 +0200" }, "message": "Merge commit \u0027v2.6.34-rc7\u0027 into perf/nmi\n\nMerge reason: catch up with latest softlockup detector changes.\n" }, { "commit": "bbf1bb3eee86f2eef2baa14e600be454d09109ee", "tree": "f7c200742a2d6ce20e72ad976b66d30d1aa6a04d", "parents": [ "fc390cde362309f6892bb719194f242c466a978b" ], "author": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Sat May 08 16:20:53 2010 +0200" }, "committer": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Sat May 08 17:12:33 2010 +0200" }, "message": "cpu_stop: add dummy implementation for UP\n\nWhen !CONFIG_SMP, cpu_stop functions weren\u0027t defined at all which\ncould lead to build failures if UP code uses cpu_stop facility. Add\ndummy cpu_stop implementation for UP. The waiting variants execute\nthe work function directly with preempt disabled and\nstop_one_cpu_nowait() schedules a workqueue work.\n\nMakefile and ifdefs around stop_machine implementation are updated to\naccomodate CONFIG_SMP \u0026\u0026 !CONFIG_STOP_MACHINE case.\n\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nReported-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "1fcccbac89f5bbc5e41aa72086960059fce372da", "tree": "9e42ee69f0216e612e5bd4338d6203dbad2d002f", "parents": [ "088e7af73a962fcc8883b7a6392544d8342553d6" ], "author": { "name": "Daisuke HATAYAMA", "email": "d.hatayama@jp.fujitsu.com", "time": "Fri Mar 05 13:44:07 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Mar 06 11:26:45 2010 -0800" }, "message": "elf coredump: replace ELF_CORE_EXTRA_* macros by functions\n\nelf_core_dump() and elf_fdpic_core_dump() use #ifdef and the corresponding\nmacro for hiding _multiline_ logics in functions. This patch removes\n#ifdef and replaces ELF_CORE_EXTRA_* by corresponding functions. For\narchitectures not implemeonting ELF_CORE_EXTRA_*, we use weak functions in\norder to reduce a range of modification.\n\nThis cleanup is for my next patches, but I think this cleanup itself is\nworth doing regardless of my firnal purpose.\n\nSigned-off-by: Daisuke HATAYAMA \u003cd.hatayama@jp.fujitsu.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Jeff Dike \u003cjdike@addtoit.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Greg Ungerer \u003cgerg@snapgear.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Alexander Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nCc: Alan Cox \u003calan@lxorguk.ukuu.org.uk\u003e\nCc: \u003clinux-arch@vger.kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a626b46e17d0762d664ce471d40bc506b6e721ab", "tree": "445f6ac655ea9247d2e27529f23ba02d0991fec0", "parents": [ "c1dcb4bb1e3e16e9baee578d9bb040e5fba1063e", "dce46a04d55d6358d2d4ab44a4946a19f9425fe2" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 03 08:15:05 2010 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Mar 03 08:15:05 2010 -0800" }, "message": "Merge branch \u0027x86-bootmem-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027x86-bootmem-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (30 commits)\n early_res: Need to save the allocation name in drop_range_partial()\n sparsemem: Fix compilation on PowerPC\n early_res: Add free_early_partial()\n x86: Fix non-bootmem compilation on PowerPC\n core: Move early_res from arch/x86 to kernel/\n x86: Add find_fw_memmap_area\n Move round_up/down to kernel.h\n x86: Make 32bit support NO_BOOTMEM\n early_res: Enhance check_and_double_early_res\n x86: Move back find_e820_area to e820.c\n x86: Add find_early_area_size\n x86: Separate early_res related code from e820.c\n x86: Move bios page reserve early to head32/64.c\n sparsemem: Put mem map for one node together.\n sparsemem: Put usemap for one node together\n x86: Make 64 bit use early_res instead of bootmem before slab\n x86: Only call dma32_reserve_bootmem 64bit !CONFIG_NUMA\n x86: Make early_node_mem get mem \u003e 4 GB if possible\n x86: Dynamically increase early_res array size\n x86: Introduce max_early_res and early_res_count\n ...\n" }, { "commit": "580e0ad21d6d6f932461d24b47041e3dd499c23f", "tree": "3476c71849c0f9aa54c160b9a994bf4d211bd697", "parents": [ "dd645cee7b50b61cb2d05b59eb6027679c437af6" ], "author": { "name": "Yinghai Lu", "email": "yinghai@kernel.org", "time": "Tue Feb 16 18:40:35 2010 -0800" }, "committer": { "name": "H. Peter Anvin", "email": "hpa@zytor.com", "time": "Tue Feb 16 21:43:39 2010 -0800" }, "message": "core: Move early_res from arch/x86 to kernel/\n\nThis makes the range reservation feature available to other\narchitectures.\n\n-v2: add get_max_mapped, max_pfn_mapped only defined in x86...\n to fix PPC compiling\n-v3: according to hpa, add CONFIG_HAVE_EARLY_RES\n-v4: fix typo about EARLY_RES in config\n\nSigned-off-by: Yinghai Lu \u003cyinghai@kernel.org\u003e\nLKML-Reference: \u003c4B7B5723.4070009@kernel.org\u003e\nSigned-off-by: H. Peter Anvin \u003chpa@zytor.com\u003e\n" }, { "commit": "27811d8cabe56e0c3622251b049086f49face4ff", "tree": "d3966301efca0886fa2b53d74d1f9e5f1cf55056", "parents": [ "c85e4aae699360e8db4ebfe710e917ac9b6fc77e" ], "author": { "name": "Yinghai Lu", "email": "yinghai@kernel.org", "time": "Wed Feb 10 01:20:07 2010 -0800" }, "committer": { "name": "H. Peter Anvin", "email": "hpa@zytor.com", "time": "Wed Feb 10 17:47:17 2010 -0800" }, "message": "x86: Move range related operation to one file\n\nWe have almost the same code for mtrr cleanup and amd_bus checkup, and\nthis code will also be used in replacing bootmem with early_res,\nso try to move them together and reuse it from different parts.\n\nAlso rename update_range to subtract_range as that is what the\nfunction is actually doing.\n\n-v2: update comments as Christoph requested\n\nSigned-off-by: Yinghai Lu \u003cyinghai@kernel.org\u003e\nLKML-Reference: \u003c1265793639-15071-4-git-send-email-yinghai@kernel.org\u003e\nSigned-off-by: H. Peter Anvin \u003chpa@zytor.com\u003e\n" }, { "commit": "84e478c6f1eb9c4bfa1fff2f8108e9a061b46428", "tree": "15be1e0d92d4439e49ecc98a504589dc596fc211", "parents": [ "1fb9d6ad2766a1dd70d167552988375049a97f21" ], "author": { "name": "Don Zickus", "email": "dzickus@redhat.com", "time": "Fri Feb 05 21:47:05 2010 -0500" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Feb 08 08:29:03 2010 +0100" }, "message": "nmi_watchdog: Config option to enable new nmi_watchdog\n\nThese are the bits that enable the new nmi_watchdog and safely\nisolate the old nmi_watchdog. Only one or the other can run,\nnot both at the same time.\n\nSigned-off-by: Don Zickus \u003cdzickus@redhat.com\u003e\nCc: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: gorcunov@gmail.com\nCc: aris@redhat.com\nCc: peterz@infradead.org\nLKML-Reference: \u003c1265424425-31562-4-git-send-email-dzickus@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "16295bec6398a3eedc9377e1af6ff4c71b98c300", "tree": "992d82d920b5e6b81fe08df58f8c2d677244f759", "parents": [ "863b557a88f8c033f7419fabafef4712a5055f85" ], "author": { "name": "Steffen Klassert", "email": "steffen.klassert@secunet.com", "time": "Wed Jan 06 19:47:10 2010 +1100" }, "committer": { "name": "Herbert Xu", "email": "herbert@gondor.apana.org.au", "time": "Wed Jan 06 19:47:10 2010 +1100" }, "message": "padata: Generic parallelization/serialization interface\n\nThis patch introduces an interface to process data objects\nin parallel. The parallelized objects return after serialization\nin the same order as they were before the parallelization.\n\nSigned-off-by: Steffen Klassert \u003csteffen.klassert@secunet.com\u003e\nSigned-off-by: Herbert Xu \u003cherbert@gondor.apana.org.au\u003e\n" }, { "commit": "ed9216c1717a3f3738a77908aff78995ea69e7ff", "tree": "c6b5ace7c333dabbf1d94074a13a98244bcdfb26", "parents": [ "d7fc02c7bae7b1cf69269992cf880a43a350cdaa", "d5696725b2a4c59503f5e0bc33adeee7f30cd45b" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Dec 08 08:02:38 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Dec 08 08:02:38 2009 -0800" }, "message": "Merge branch \u0027kvm-updates/2.6.33\u0027 of git://git.kernel.org/pub/scm/virt/kvm/kvm\n\n* \u0027kvm-updates/2.6.33\u0027 of git://git.kernel.org/pub/scm/virt/kvm/kvm: (84 commits)\n KVM: VMX: Fix comparison of guest efer with stale host value\n KVM: s390: Fix prefix register checking in arch/s390/kvm/sigp.c\n KVM: Drop user return notifier when disabling virtualization on a cpu\n KVM: VMX: Disable unrestricted guest when EPT disabled\n KVM: x86 emulator: limit instructions to 15 bytes\n KVM: s390: Make psw available on all exits, not just a subset\n KVM: x86: Add KVM_GET/SET_VCPU_EVENTS\n KVM: VMX: Report unexpected simultaneous exceptions as internal errors\n KVM: Allow internal errors reported to userspace to carry extra data\n KVM: Reorder IOCTLs in main kvm.h\n KVM: x86: Polish exception injection via KVM_SET_GUEST_DEBUG\n KVM: only clear irq_source_id if irqchip is present\n KVM: x86: disallow KVM_{SET,GET}_LAPIC without allocated in-kernel lapic\n KVM: x86: disallow multiple KVM_CREATE_IRQCHIP\n KVM: VMX: Remove vmx-\u003emsr_offset_efer\n KVM: MMU: update invlpg handler comment\n KVM: VMX: move CR3/PDPTR update to vmx_set_cr3\n KVM: remove duplicated task_switch check\n KVM: powerpc: Fix BUILD_BUG_ON condition\n KVM: VMX: Use shared msr infrastructure\n ...\n\nTrivial conflicts due to new Kconfig options in arch/Kconfig and kernel/Makefile\n" }, { "commit": "1557d33007f63dd96e5d15f33af389378e5f2e54", "tree": "06d05722b2ba5d2a67532f779fa8a88efe3c88f1", "parents": [ "6ec22f9b037fc0c2e00ddb7023fad279c365324d", "c656ae95d1c5c8ed5763356263ace2d03087efec" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Dec 08 07:38:50 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Dec 08 07:38:50 2009 -0800" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/sysctl-2.6\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/sysctl-2.6: (43 commits)\n security/tomoyo: Remove now unnecessary handling of security_sysctl.\n security/tomoyo: Add a special case to handle accesses through the internal proc mount.\n sysctl: Drop \u0026 in front of every proc_handler.\n sysctl: Remove CTL_NONE and CTL_UNNUMBERED\n sysctl: kill dead ctl_handler definitions.\n sysctl: Remove the last of the generic binary sysctl support\n sysctl net: Remove unused binary sysctl code\n sysctl security/tomoyo: Don\u0027t look at ctl_name\n sysctl arm: Remove binary sysctl support\n sysctl x86: Remove dead binary sysctl support\n sysctl sh: Remove dead binary sysctl support\n sysctl powerpc: Remove dead binary sysctl support\n sysctl ia64: Remove dead binary sysctl support\n sysctl s390: Remove dead sysctl binary support\n sysctl frv: Remove dead binary sysctl support\n sysctl mips/lasat: Remove dead binary sysctl support\n sysctl drivers: Remove dead binary sysctl support\n sysctl crypto: Remove dead binary sysctl support\n sysctl security/keys: Remove dead binary sysctl support\n sysctl kernel: Remove binary sysctl logic\n ...\n" }, { "commit": "c3fa27d1367fac63ac8533d6f20ea851d0d70a10", "tree": "e7731554085e22b6b63411b1ebb401079f3e0bbb", "parents": [ "96fa2b508d2d3fe040cf4ef2fffb955f0a537ea1", "d103d01e4b19f185d3c85f77402b605534c32e89" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Dec 05 15:30:21 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Dec 05 15:30:21 2009 -0800" }, "message": "Merge branch \u0027perf-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027perf-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (470 commits)\n x86: Fix comments of register/stack access functions\n perf tools: Replace %m with %a in sscanf\n hw-breakpoints: Keep track of user disabled breakpoints\n tracing/syscalls: Make syscall events print callbacks static\n tracing: Add DEFINE_EVENT(), DEFINE_SINGLE_EVENT() support to docbook\n perf: Don\u0027t free perf_mmap_data until work has been done\n perf_event: Fix compile error\n perf tools: Fix _GNU_SOURCE macro related strndup() build error\n trace_syscalls: Remove unused syscall_name_to_nr()\n trace_syscalls: Simplify syscall profile\n trace_syscalls: Remove duplicate init_enter_##sname()\n trace_syscalls: Add syscall_nr field to struct syscall_metadata\n trace_syscalls: Remove enter_id exit_id\n trace_syscalls: Set event_enter_##sname-\u003edata to its metadata\n trace_syscalls: Remove unused event_syscall_enter and event_syscall_exit\n perf_event: Initialize data.period in perf_swevent_hrtimer()\n perf probe: Simplify event naming\n perf probe: Add --list option for listing current probe events\n perf probe: Add argv_split() from lib/argv_split.c\n perf probe: Move probe event utility functions to probe-event.c\n ...\n" }, { "commit": "607781762e7aae9c976f0a9a8829d4ba3e2da4ab", "tree": "933dad6ecb0be49e9b1ef41b69d5aa256510720e", "parents": [ "d0b093a8b5ae34ee8be1f7e0dd197fe4788fa1d5", "8bfb2f8e655b9d0c45fde679fcd5fd97e34513db" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Dec 05 09:52:14 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Dec 05 09:52:14 2009 -0800" }, "message": "Merge branch \u0027core-rcu-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core-rcu-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (31 commits)\n rcu: Make RCU\u0027s CPU-stall detector be default\n rcu: Add expedited grace-period support for preemptible RCU\n rcu: Enable fourth level of TREE_RCU hierarchy\n rcu: Rename \"quiet\" functions\n rcu: Re-arrange code to reduce #ifdef pain\n rcu: Eliminate unneeded function wrapping\n rcu: Fix grace-period-stall bug on large systems with CPU hotplug\n rcu: Eliminate __rcu_pending() false positives\n rcu: Further cleanups of use of lastcomp\n rcu: Simplify association of forced quiescent states with grace periods\n rcu: Accelerate callback processing on CPUs not detecting GP end\n rcu: Mark init-time-only rcu_bootup_announce() as __init\n rcu: Simplify association of quiescent states with grace periods\n rcu: Rename dynticks_completed to completed_fqs\n rcu: Enable synchronize_sched_expedited() fastpath\n rcu: Remove inline from forward-referenced functions\n rcu: Fix note_new_gpnum() uses of -\u003egpnum\n rcu: Fix synchronization for rcu_process_gp_end() uses of -\u003ecompleted counter\n rcu: Prepare for synchronization fixes: clean up for non-NO_HZ handling of -\u003ecompleted counter\n rcu: Cleanup: balance rcu_irq_enter()/rcu_irq_exit() calls\n ...\n" }, { "commit": "58988b07cfe2ebe9f9b39d973fd8a083390e749f", "tree": "f7a164abe85b8aa768c58a80c1261208372fb4b0", "parents": [ "22763c5cf3690a681551162c15d34d935308c8d7", "8e7cac79808b62f242069a6ac88d364d35621371" ], "author": { "name": "Avi Kivity", "email": "avi@redhat.com", "time": "Thu Dec 03 09:30:06 2009 +0200" }, "committer": { "name": "Avi Kivity", "email": "avi@redhat.com", "time": "Thu Dec 03 09:30:06 2009 +0200" }, "message": "Merge remote branch \u0027tip/x86/entry\u0027 into kvm-updates/2.6.33\n\nSigned-off-by: Avi Kivity \u003cavi@redhat.com\u003e\n" }, { "commit": "f13a48bd798a159291ca583b95453171b88b7448", "tree": "a644293386e30ed5ab297e5943e57658e1d11e6a", "parents": [ "df87f8c06c7f562ef9d93b9d674eebf2ffb96f6a" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Tue Dec 01 15:36:11 2009 +0000" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Dec 01 08:20:31 2009 -0800" }, "message": "SLOW_WORK: Move slow_work\u0027s proc file to debugfs\n\nMove slow_work\u0027s debugging proc file to debugfs.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nRequested-and-acked-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6e3d8330ae2c4b2c11a9577a0130d2ecda1c610d", "tree": "4d360eaa3e9cefc16081f3853b5fa02996b9caf4", "parents": [ "bfd451184d80301d1ae970b1ebffde1e9c6240f9" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Nov 23 10:19:20 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Nov 23 10:19:20 2009 +0100" }, "message": "perf events: Do not generate function trace entries in perf code\n\nDecreases perf overhead when function tracing is enabled,\nby about 50%.\n\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\nLKML-Reference: \u003cnew-submission\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "8fba10a42d191de612e60e7009c8f0313f90a9b3", "tree": "1e772fcc7ad3eb5bb3ca1c6cd156171295e6db25", "parents": [ "6b8268b17a1ffc942bc72d7d00274e433d6b6719" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:10:51 2009 +0000" }, "committer": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Nov 19 18:10:51 2009 +0000" }, "message": "SLOW_WORK: Allow the work items to be viewed through a /proc file\n\nAllow the executing and queued work items to be viewed through a /proc file\nfor debugging purposes. The contents look something like the following:\n\n THR PID ITEM ADDR FL MARK DESC\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\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n 0 3005 ffff880023f52348 a 952ms FSC: OBJ17d3: LOOK\n 1 3006 ffff880024e33668 2 160ms FSC: OBJ17e5 OP60d3b: Write1/Store fl\u003d2\n 2 3165 ffff8800296dd180 a 424ms FSC: OBJ17e4: LOOK\n 3 4089 ffff8800262c8d78 a 212ms FSC: OBJ17ea: CRTN\n 4 4090 ffff88002792bed8 2 388ms FSC: OBJ17e8 OP60d36: Write1/Store fl\u003d2\n 5 4092 ffff88002a0ef308 2 388ms FSC: OBJ17e7 OP60d2e: Write1/Store fl\u003d2\n 6 4094 ffff88002abaf4b8 2 132ms FSC: OBJ17e2 OP60d4e: Write1/Store fl\u003d2\n 7 4095 ffff88002bb188e0 a 388ms FSC: OBJ17e9: CRTN\n vsq - ffff880023d99668 1 308ms FSC: OBJ17e0 OP60f91: Write1/EnQ fl\u003d2\n vsq - ffff8800295d1740 1 212ms FSC: OBJ16be OP4d4b6: Write1/EnQ fl\u003d2\n vsq - ffff880025ba3308 1 160ms FSC: OBJ179a OP58dec: Write1/EnQ fl\u003d2\n vsq - ffff880024ec83e0 1 160ms FSC: OBJ17ae OP599f2: Write1/EnQ fl\u003d2\n vsq - ffff880026618e00 1 160ms FSC: OBJ17e6 OP60d33: Write1/EnQ fl\u003d2\n vsq - ffff880025a2a4b8 1 132ms FSC: OBJ16a2 OP4d583: Write1/EnQ fl\u003d2\n vsq - ffff880023cbe6d8 9 212ms FSC: OBJ17eb: LOOK\n vsq - ffff880024d37590 9 212ms FSC: OBJ17ec: LOOK\n vsq - ffff880027746cb0 9 212ms FSC: OBJ17ed: LOOK\n vsq - ffff880024d37ae8 9 212ms FSC: OBJ17ee: LOOK\n vsq - ffff880024d37cb0 9 212ms FSC: OBJ17ef: LOOK\n vsq - ffff880025036550 9 212ms FSC: OBJ17f0: LOOK\n vsq - ffff8800250368e0 9 212ms FSC: OBJ17f1: LOOK\n vsq - ffff880025036aa8 9 212ms FSC: OBJ17f2: LOOK\n\nIn the \u0027THR\u0027 column, executing items show the thread they\u0027re occupying and\nqueued threads indicate which queue they\u0027re on. \u0027PID\u0027 shows the process ID of\na slow-work thread that\u0027s executing something. \u0027FL\u0027 shows the work item flags.\n\u0027MARK\u0027 indicates how long since an item was queued or began executing. Lastly,\nthe \u0027DESC\u0027 column permits the owner of an item to give some information.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\n" }, { "commit": "afa588b2651a03da4bc601a17a244b1cd97264f2", "tree": "cb7a03753f282b4e459305fec307caf0837e756b", "parents": [ "b419148e567728f6af0c3b01965c1cc141e3e13a" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Thu Apr 02 23:44:59 2009 -0700" }, "committer": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Fri Nov 06 03:20:07 2009 -0800" }, "message": "sysctl: Separate the binary sysctl logic into it\u0027s own file.\n\nIn preparation for more invasive cleanups separate the core\nbinary sysctl logic into it\u0027s own file.\n\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\n" }, { "commit": "9b1d82fa1611706fa7ee1505f290160a18caf95d", "tree": "7b2eed068360465d0b028d345eb318b1a8217305", "parents": [ "0edf1a683e499191b27a067956ae9f5fa6e046c6" ], "author": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sun Oct 25 19:03:50 2009 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Oct 26 09:40:29 2009 +0100" }, "message": "rcu: \"Tiny RCU\", The Bloatwatch Edition\n\nThis patch is a version of RCU designed for !SMP provided for a\nsmall-footprint RCU implementation. In particular, the\nimplementation of synchronize_rcu() is extremely lightweight and\nhigh performance. It passes rcutorture testing in each of the\nfour relevant configurations (combinations of NO_HZ and PREEMPT)\non x86. This saves about 1K bytes compared to old Classic RCU\n(which is no longer in mainline), and more than three kilobytes\ncompared to Hierarchical RCU (updated to 2.6.30):\n\n\tCONFIG_TREE_RCU:\n\n\t text\t data\t bss\t dec\t filename\n\t 183 4 0 187 kernel/rcupdate.o\n\t 2783 520 36 3339 kernel/rcutree.o\n\t\t\t\t 3526 Total (vs 4565 for v7)\n\n\tCONFIG_TREE_PREEMPT_RCU:\n\n\t text\t data\t bss\t dec\t filename\n\t 263 4 0 267 kernel/rcupdate.o\n\t 4594 776 52 5422 kernel/rcutree.o\n\t \t\t\t 5689 Total (6155 for v7)\n\n\tCONFIG_TINY_RCU:\n\n\t text\t data\t bss\t dec\t filename\n\t 96 4 0 100 kernel/rcupdate.o\n\t 734 24 0 758 kernel/rcutiny.o\n\t \t\t\t 858 Total (vs 848 for v7)\n\nThe above is for x86. Your mileage may vary on other platforms.\nFurther compression is possible, but is being procrastinated.\n\nChanges from v7 (http://lkml.org/lkml/2009/10/9/388)\n\no\tApply Lai Jiangshan\u0027s review comments (aside from\nmight_sleep() \tin synchronize_sched(), which is covered by SMP builds).\n\no\tFix up expedited primitives.\n\nChanges from v6 (http://lkml.org/lkml/2009/9/23/293).\n\no\tForward ported to put it into the 2.6.33 stream.\n\no\tAdded lockdep support.\n\no\tMake lightweight rcu_barrier.\n\nChanges from v5 (http://lkml.org/lkml/2009/6/23/12).\n\no\tPorted to latest pre-2.6.32 merge window kernel.\n\n\t- Renamed rcu_qsctr_inc() to rcu_sched_qs().\n\t- Renamed rcu_bh_qsctr_inc() to rcu_bh_qs().\n\t- Provided trivial rcu_cpu_notify().\n\t- Provided trivial exit_rcu().\n\t- Provided trivial rcu_needs_cpu().\n\t- Fixed up the rcu_*_enter/exit() functions in linux/hardirq.h.\n\no\tRemoved the dependence on EMBEDDED, with a view to making\n\tTINY_RCU default for !SMP at some time in the future.\n\no\tAdded (trivial) support for expedited grace periods.\n\nChanges from v4 (http://lkml.org/lkml/2009/5/2/91) include:\n\no\tSqueeze the size down a bit further by removing the\n\t-\u003ecompleted field from struct rcu_ctrlblk.\n\no\tThis permits synchronize_rcu() to become the empty function.\n\tPrevious concerns about rcutorture were unfounded, as\n\trcutorture correctly handles a constant value from\n\trcu_batches_completed() and rcu_batches_completed_bh().\n\nChanges from v3 (http://lkml.org/lkml/2009/3/29/221) include:\n\no\tChanged rcu_batches_completed(), rcu_batches_completed_bh()\n\trcu_enter_nohz(), rcu_exit_nohz(), rcu_nmi_enter(), and\n\trcu_nmi_exit(), to be static inlines, as suggested by David\n\tHowells. Doing this saves about 100 bytes from rcutiny.o.\n\t(The numbers between v3 and this v4 of the patch are not directly\n\tcomparable, since they are against different versions of Linux.)\n\nChanges from v2 (http://lkml.org/lkml/2009/2/3/333) include:\n\no\tFix whitespace issues.\n\no\tChange short-circuit \"||\" operator to instead be \"+\" in order\nto \tfix performance bug noted by \"kraai\" on LWN.\n\n\t\t(http://lwn.net/Articles/324348/)\n\nChanges from v1 (http://lkml.org/lkml/2009/1/13/440) include:\n\no\tThis version depends on EMBEDDED as well as !SMP, as suggested\n\tby Ingo.\n\no\tUpdated rcu_needs_cpu() to unconditionally return zero,\n\tpermitting the CPU to enter dynticks-idle mode at any time.\n\tThis works because callbacks can be invoked upon entry to\n\tdynticks-idle mode.\n\no\tPaul is now OK with this being included, based on a poll at\nthe \tKernel Miniconf at linux.conf.au, where about ten people said\n\tthat they cared about saving 900 bytes on single-CPU systems.\n\no\tApplies to both mainline and tip/core/rcu.\n\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nAcked-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\nReviewed-by: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: dipankar@in.ibm.com\nCc: mathieu.desnoyers@polymtl.ca\nCc: dvhltc@us.ibm.com\nCc: niv@us.ibm.com\nCc: peterz@infradead.org\nCc: rostedt@goodmis.org\nCc: Valdis.Kletnieks@vt.edu\nCc: avi@redhat.com\nCc: mtosatti@redhat.com\nLKML-Reference: \u003c12565226351355-git-send-email-\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "7a041097518a120f92af631a83db4d41e07ee51b", "tree": "42add260dac48c75ea0d836d72faaa2355488bf8", "parents": [ "7c68af6e32c73992bad24107311f3433c89016e2" ], "author": { "name": "Avi Kivity", "email": "avi@redhat.com", "time": "Sun Oct 25 14:24:45 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Oct 25 17:37:57 2009 +0100" }, "message": "x86: Fix user return notifier build\n\nWhen CONFIG_USER_RETURN_NOTIFIER is set, we need to link\nkernel/user-return-notifier.o.\n\nSigned-off-by: Avi Kivity \u003cavi@redhat.com\u003e\nLKML-Reference: \u003c1256473485-23109-1-git-send-email-avi@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "0f8f86c7bdd1c954fbe153af437a0d91a6c5721a", "tree": "94a8d419a470a4f9852ca397bb9bbe48db92ff5c", "parents": [ "dca2d6ac09d9ef59ff46820d4f0c94b08a671202", "f39cdf25bf77219676ec5360980ac40b1a7e144a" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Sun Oct 18 01:09:09 2009 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Sun Oct 18 01:12:33 2009 +0200" }, "message": "Merge commit \u0027perf/core\u0027 into perf/hw-breakpoint\n\nConflicts:\n\tkernel/Makefile\n\tkernel/trace/Makefile\n\tkernel/trace/trace.h\n\tsamples/Makefile\n\nMerge reason: We need to be uptodate with the perf events development\nbranch because we plan to rewrite the breakpoints API on top of\nperf events.\n" }, { "commit": "fe6934354f8e287275500cd6ec73826d4d6ad457", "tree": "f5ccab89d27472f5116257d1f7248594d3510882", "parents": [ "c6d57f3312a6619d47c5557b5f6154a74d04ff80" ], "author": { "name": "Paul Menage", "email": "menage@google.com", "time": "Wed Sep 23 15:56:20 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Sep 24 07:20:57 2009 -0700" }, "message": "cgroups: move the cgroup debug subsys into cgroup.c to access internal state\n\nWhile it\u0027s architecturally clean to have the cgroup debug subsystem be\ncompletely independent of the cgroups framework, it limits its usefulness\nfor debugging the contents of internal data structures. Move the debug\nsubsystem code into the scope of all the cgroups data structures to make\nmore detailed debugging possible.\n\nSigned-off-by: Paul Menage \u003cmenage@google.com\u003e\nReviewed-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Dhaval Giani \u003cdhaval@linux.vnet.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "43c1266ce4dc06bfd236cec31e11e9ecd69c0bef", "tree": "40a86739ca4c36200f447f655b01c57cfe646e26", "parents": [ "b8c7f1dc5ca4e0d10709182233cdab932cef593d", "57c0c15b5244320065374ad2c54f4fbec77a6428" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Sep 21 09:15:07 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Sep 21 09:15:07 2009 -0700" }, "message": "Merge branch \u0027perfcounters-rename-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027perfcounters-rename-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n perf: Tidy up after the big rename\n perf: Do the big rename: Performance Counters -\u003e Performance Events\n perf_counter: Rename \u0027event\u0027 to event_id/hw_event\n perf_counter: Rename list_entry -\u003e group_entry, counter_list -\u003e group_list\n\nManually resolved some fairly trivial conflicts with the tracing tree in\ninclude/trace/ftrace.h and kernel/trace/trace_syscalls.c.\n" }, { "commit": "cdd6c482c9ff9c55475ee7392ec8f672eddb7be6", "tree": "81f98a3ab46c589792057fe2392c1e10f8ad7893", "parents": [ "dfc65094d0313cc48969fa60bcf33d693aeb05a7" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Sep 21 12:02:48 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Sep 21 14:28:04 2009 +0200" }, "message": "perf: Do the big rename: Performance Counters -\u003e Performance Events\n\nBye-bye Performance Counters, welcome Performance Events!\n\nIn the past few months the perfcounters subsystem has grown out its\ninitial role of counting hardware events, and has become (and is\nbecoming) a much broader generic event enumeration, reporting, logging,\nmonitoring, analysis facility.\n\nNaming its core object \u0027perf_counter\u0027 and naming the subsystem\n\u0027perfcounters\u0027 has become more and more of a misnomer. With pending\ncode like hw-breakpoints support the \u0027counter\u0027 name is less and\nless appropriate.\n\nAll in one, we\u0027ve decided to rename the subsystem to \u0027performance\nevents\u0027 and to propagate this rename through all fields, variables\nand API names. (in an ABI compatible fashion)\n\nThe word \u0027event\u0027 is also a bit shorter than \u0027counter\u0027 - which makes\nit slightly more convenient to write/handle as well.\n\nThanks goes to Stephane Eranian who first observed this misnomer and\nsuggested a rename.\n\nUser-space tooling and ABI compatibility is not affected - this patch\nshould be function-invariant. (Also, defconfigs were not touched to\nkeep the size down.)\n\nThis patch has been generated via the following script:\n\n FILES\u003d$(find * -type f | grep -vE \u0027oprofile|[^K]config\u0027)\n\n sed -i \\\n -e \u0027s/PERF_EVENT_/PERF_RECORD_/g\u0027 \\\n -e \u0027s/PERF_COUNTER/PERF_EVENT/g\u0027 \\\n -e \u0027s/perf_counter/perf_event/g\u0027 \\\n -e \u0027s/nb_counters/nb_events/g\u0027 \\\n -e \u0027s/swcounter/swevent/g\u0027 \\\n -e \u0027s/tpcounter_event/tp_event/g\u0027 \\\n $FILES\n\n for N in $(find . -name perf_counter.[ch]); do\n M\u003d$(echo $N | sed \u0027s/perf_counter/perf_event/g\u0027)\n mv $N $M\n done\n\n FILES\u003d$(find . -name perf_event.*)\n\n sed -i \\\n -e \u0027s/COUNTER_MASK/REG_MASK/g\u0027 \\\n -e \u0027s/COUNTER/EVENT/g\u0027 \\\n -e \u0027s/\\\u003cevent\\\u003e/event_id/g\u0027 \\\n -e \u0027s/counter/event/g\u0027 \\\n -e \u0027s/Counter/Event/g\u0027 \\\n $FILES\n\n... to keep it as correct as possible. This script can also be\nused by anyone who has pending perfcounters patches - it converts\na Linux kernel tree over to the new naming. We tried to time this\nchange to the point in time where the amount of pending patches\nis the smallest: the end of the merge window.\n\nNamespace clashes were fixed up in a preparatory patch - and some\nstylistic fallout will be fixed up in a subsequent patch.\n\n( NOTE: \u0027counters\u0027 are still the proper terminology when we deal\n with hardware registers - and these sed scripts are a bit\n over-eager in renaming them. I\u0027ve undone some of that, but\n in case there\u0027s something left where \u0027counter\u0027 would be\n better than \u0027event\u0027 we can undo that on an individual basis\n instead of touching an otherwise nicely automated patch. )\n\nSuggested-by: Stephane Eranian \u003ceranian@google.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Paul Mackerras \u003cpaulus@samba.org\u003e\nReviewed-by: Arjan van de Ven \u003carjan@linux.intel.com\u003e\nCc: Mike Galbraith \u003cefault@gmx.de\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Kyle McMartin \u003ckyle@mcmartin.ca\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: \"H. Peter Anvin\" \u003chpa@zytor.com\u003e\nCc: \u003clinux-arch@vger.kernel.org\u003e\nLKML-Reference: \u003cnew-submission\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "fc5377668c3d808e1d53c4aee152c836f55c3490", "tree": "366723ccb26a64c311074c346721aaf4ff0e7d58", "parents": [ "df58bee21ed218cb7dfb561a590b1bd2a99531cf" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Thu Sep 17 19:35:28 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Sep 18 21:22:08 2009 +0200" }, "message": "tracing: Remove markers\n\nNow that the last users of markers have migrated to the event\ntracer we can kill off the (now orphan) support code.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nAcked-by: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c20090917173527.GA1699@lst.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "a56af87648054089d89874b52e3fc23ed4f274ad", "tree": "81714be5cc39f830b4acf55ec782b46f36e67ebe", "parents": [ "162dd4212409fd2d36ff22547ea821bf3e86bcc9" ], "author": { "name": "Ming Lei", "email": "tom.leiming@gmail.com", "time": "Sun Jul 12 21:44:55 2009 +0800" }, "committer": { "name": "Greg Kroah-Hartman", "email": "gregkh@suse.de", "time": "Tue Sep 15 09:50:47 2009 -0700" }, "message": "driver-core: move dma-coherent.c from kernel to driver/base\n\nPlacing dma-coherent.c in driver/base is better than in kernel,\nsince it contains code to do per-device coherent dma memory\nhandling.\n\nSigned-off-by: Ming Lei \u003ctom.leiming@gmail.com\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\n\n" }, { "commit": "dca2d6ac09d9ef59ff46820d4f0c94b08a671202", "tree": "fdec753b842dad09e3a4151954fab3eb5c43500d", "parents": [ "d6a65dffb30d8636b1e5d4c201564ef401a246cf", "18240904960a39e582ced8ba8ececb10b8c22dd3" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Sep 15 12:18:15 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Sep 15 12:18:15 2009 +0200" }, "message": "Merge branch \u0027linus\u0027 into tracing/hw-breakpoints\n\nConflicts:\n\tarch/x86/kernel/process_64.c\n\nSemantic conflict fixed in:\n\tarch/x86/kvm/x86.c\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "c91d7d54ea9e75ec18c733969ba16dd7ab94fc99", "tree": "5b93c6931adf9908f9f207eaa7a0f91d8207ad08", "parents": [ "133309a89e7430f907ebe85e78906ee12c311727", "48586218b6515b9bd70694e3cd8c901a6a6ee69c" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Sep 14 19:59:37 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Sep 14 19:59:37 2009 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-kconfig\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-kconfig:\n kconfig: add missing dependency of conf to localyesconfig\n kconfig: test if a .config already exists\n kconfig: make local .config default for streamline_config\n kconfig: test for /boot/config-uname after /proc/config.gz in localconfig\n kconfig: unset IKCONFIG_PROC and clean up nesting\n kconfig: search for a config to base the local(mod|yes)config on\n kconfig: keep config.gz around even if CONFIG_IKCONFIG_PROC is not set\n kconfig: have extract-ikconfig read ELF files\n kconfig: add check if end exists in extract-ikconfig\n kconfig: enable CONFIG_IKCONFIG from streamline_config.pl\n kconfig: do not warn about modules built in\n kconfig: streamline_config.pl do not stop with no depends\n kconfig: add make localyesconfig option\n kconfig: make localmodconfig to run streamline_config.pl\n kconfig: add streamline_config.pl to scripts\n" }, { "commit": "a1922ed661ab2c1637d0b10cde933bd9cd33d965", "tree": "0f1777542b385ebefd30b3586d830fd8ed6fda5b", "parents": [ "75e33751ca8bbb72dd6f1a74d2810ddc8cbe4bdf", "d28daf923ac5e4a0d7cecebae56f3e339189366b" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Sep 07 08:19:51 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Sep 07 08:19:51 2009 +0200" }, "message": "Merge branch \u0027tracing/core\u0027 into tracing/hw-breakpoints\n\nConflicts:\n\tarch/Kconfig\n\tkernel/trace/trace.h\n\nMerge reason: resolve the conflicts, plus adopt to the new\n ring-buffer APIs.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "6b3ef48adf847f7adf11c870e3ffacac150f1564", "tree": "e1403ce515bf00ade99ec806f6ab6b6db999aa0b", "parents": [ "f41d911f8c49a5d65c86504c19e8204bb605c4fd" ], "author": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sat Aug 22 13:56:53 2009 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Aug 23 10:32:40 2009 +0200" }, "message": "rcu: Remove CONFIG_PREEMPT_RCU\n\nNow that CONFIG_TREE_PREEMPT_RCU is in place, there is no\nfurther need for CONFIG_PREEMPT_RCU. Remove it, along with\nwhatever subtle bugs it may (or may not) contain.\n\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nCc: laijs@cn.fujitsu.com\nCc: dipankar@in.ibm.com\nCc: akpm@linux-foundation.org\nCc: mathieu.desnoyers@polymtl.ca\nCc: josht@linux.vnet.ibm.com\nCc: dvhltc@us.ibm.com\nCc: niv@us.ibm.com\nCc: peterz@infradead.org\nCc: rostedt@goodmis.org\nLKML-Reference: \u003c125097461396-git-send-email-\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "f41d911f8c49a5d65c86504c19e8204bb605c4fd", "tree": "59bcd3048652ef290b3e19d2904409afd5c90eb3", "parents": [ "a157229cabd6dd8cfa82525fc9bf730c94cc9ac2" ], "author": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Sat Aug 22 13:56:52 2009 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Aug 23 10:32:40 2009 +0200" }, "message": "rcu: Merge preemptable-RCU functionality into hierarchical RCU\n\nCreate a kernel/rcutree_plugin.h file that contains definitions\nfor preemptable RCU (or, under the #else branch of the #ifdef,\nempty definitions for the classic non-preemptable semantics).\nThese definitions fit into plugins defined in kernel/rcutree.c\nfor this purpose.\n\nThis variant of preemptable RCU uses a new algorithm whose\nread-side expense is roughly that of classic hierarchical RCU\nunder CONFIG_PREEMPT. This new algorithm\u0027s update-side expense\nis similar to that of classic hierarchical RCU, and, in absence\nof read-side preemption or blocking, is exactly that of classic\nhierarchical RCU. Perhaps more important, this new algorithm\nhas a much simpler implementation, saving well over 1,000 lines\nof code compared to mainline\u0027s implementation of preemptable\nRCU, which will hopefully be retired in favor of this new\nalgorithm.\n\nThe simplifications are obtained by maintaining per-task\nnesting state for running tasks, and using a simple\nlock-protected algorithm to handle accounting when tasks block\nwithin RCU read-side critical sections, making use of lessons\nlearned while creating numerous user-level RCU implementations\nover the past 18 months.\n\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nCc: laijs@cn.fujitsu.com\nCc: dipankar@in.ibm.com\nCc: akpm@linux-foundation.org\nCc: mathieu.desnoyers@polymtl.ca\nCc: josht@linux.vnet.ibm.com\nCc: dvhltc@us.ibm.com\nCc: niv@us.ibm.com\nCc: peterz@infradead.org\nCc: rostedt@goodmis.org\nLKML-Reference: \u003c12509746134003-git-send-email-\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "de481560eb0bd9d940b90311eba85711e4b1150b", "tree": "51001590f3a317a6de96d8fa32c86c5be63579dd", "parents": [ "6be51ffc1791b72d11cef9bb0a578fe8c5d64c6a" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Apr 30 12:32:04 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Tue Aug 18 22:01:08 2009 -0400" }, "message": "kconfig: keep config.gz around even if CONFIG_IKCONFIG_PROC is not set\n\nIf CONFIG_IKCONFIG is set but CONFIG_IKCONFIG_PROC is not, then\ngcc will optimize the config.gz out, because nobody uses it.\n\nThis patch adds \"__used\" to the config.gz data to keep it around so that\ncode like extract-ikconfig can still find it.\n\n[ Impact: allow extract-ikconfig to find config.gz ]\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "fa08661af834875c9bd6f7f0b1b9388dc72a6585", "tree": "c381fcfcfeb38515bfa93445c80ad9231343414d", "parents": [ "240ebbf81f149b11a31e060ebe5ee51a3c775360", "64f1607ffbbc772685733ea63e6f7f4183df1b16" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Aug 15 18:55:58 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Aug 15 18:56:13 2009 +0200" }, "message": "Merge commit \u0027v2.6.31-rc6\u0027 into core/rcu\n\nMerge reason: the branch was on pre-rc1 .30, update to latest.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "9b71272b6ad4966481d73e6abf3ae4bbc3bdabd5", "tree": "39ee39ee45333b9eadb0c1183d9e88f86be59983", "parents": [ "61abfd2df8aa43a137ae58446dd0638a2385586e", "0296e4254f3318e0dcad9706fa1daf8e5addc1e9" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Jun 28 11:05:04 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Jun 28 11:05:04 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 ftrace: Fix the output of profile\n ring-buffer: Make it generally available\n ftrace: Remove duplicate newline\n tracing: Fix trace_buf_size boot option\n ftrace: Fix t_hash_start()\n ftrace: Don\u0027t manipulate @pos in t_start()\n ftrace: Don\u0027t increment @pos in g_start()\n tracing: Reset iterator in t_start()\n trace_stat: Don\u0027t increment @pos in seq start()\n tracing_bprintk: Don\u0027t increment @pos in t_start()\n tracing/events: Don\u0027t increment @pos in s_start()\n" }, { "commit": "1155de47cd66d0c496d5a6fb2223e980ef1285b2", "tree": "0ee762d6b1215a37fe89acc174de8cbbf476d218", "parents": [ "00e54d087afb3867b0b461aef6c1ff433d0df564" ], "author": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Thu Jun 25 14:30:12 2009 +0900" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Jun 25 10:31:30 2009 +0200" }, "message": "ring-buffer: Make it generally available\n\nIn hunting down the cause for the hwlat_detector ring buffer spew in\nmy failed -next builds it became obvious that folks are now treating\nring_buffer as something that is generic independent of tracing and thus,\nsuitable for public driver consumption.\n\nGiven that there are only a few minor areas in ring_buffer that have any\nreliance on CONFIG_TRACING or CONFIG_FUNCTION_TRACER, provide stubs for\nthose and make it generally available.\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Jon Masters \u003cjcm@jonmasters.org\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nLKML-Reference: \u003c20090625053012.GB19944@linux-sh.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "3a6a6c16be78472a52f6dd7d88913373b42ad0f7", "tree": "98bb91e983e54f0c026ba3b2c6d66368d06e244a", "parents": [ "c82e6d450fda56cb2d4f68534173d3cd11b32f9f" ], "author": { "name": "Eric Paris", "email": "eparis@redhat.com", "time": "Wed Jun 24 16:09:01 2009 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Jun 24 16:42:05 2009 -0400" }, "message": "audit: inode watches depend on CONFIG_AUDIT not CONFIG_AUDIT_SYSCALL\n\nEven though one cannot make use of the audit watch code without\nCONFIG_AUDIT_SYSCALL the spaghetti nature of the audit code means that\nthe audit rule filtering requires that it at least be compiled.\n\nThus build the audit_watch code when we build auditfilter like it was\nbefore cfcad62c74abfef83762dc05a556d21bdf3980a2\n\nClearly this is a point of potential future cleanup..\n\nReported-by: Frans Pop \u003celendil@planet.nl\u003e\nSigned-off-by: Eric Paris \u003ceparis@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "c17ef45342cc033fdf7bdd5b28615e0090f8d2e7", "tree": "6bb4b1d09f0801d5e3ad5a727e14035090b25931", "parents": [ "f6faac71d502be1c29c81b2f45657662c3b84470" ], "author": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Tue Jun 23 17:12:47 2009 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jun 24 15:05:13 2009 +0200" }, "message": "rcu: Remove Classic RCU\n\nRemove Classic RCU, given that the combination of Tree RCU and\nthe proposed Bloatwatch RCU do everything that Classic RCU can\nwith fewer bugs.\n\nTree RCU has been default in x86 builds for almost six months,\nand seems to be quite reliable, so there does not seem to be\nmuch justification for keeping the Classic RCU code and config\ncomplexity around anymore.\n\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.ibm.com\u003e\nCc: akpm@linux-foundation.org\nCc: niv@us.ibm.com\nCc: dvhltc@us.ibm.com\nCc: dipankar@in.ibm.com\nCc: dhowells@redhat.com\nCc: lethal@linux-sh.org\nCc: kernel@wantstofly.org\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "cfcad62c74abfef83762dc05a556d21bdf3980a2", "tree": "d253dbf8dfa4d31379dcd886cc1b41c69921acdd", "parents": [ "ea7ae60bfe39aeedfb29571c47280bf0067ee5f3" ], "author": { "name": "Eric Paris", "email": "eparis@redhat.com", "time": "Thu Jun 11 14:31:36 2009 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Jun 23 23:50:59 2009 -0400" }, "message": "audit: seperate audit inode watches into a subfile\n\nIn preparation for converting audit to use fsnotify instead of inotify we\nseperate the inode watching code into it\u0027s own file. This is similar to\nhow the audit tree watching code is already seperated into audit_tree.c\n\nSigned-off-by: Eric Paris \u003ceparis@redhat.com\u003e\n" }, { "commit": "2521f2c228ad750701ba4702484e31d876dbc386", "tree": "2221de3e3de9512979b8244c6304366e3be5be63", "parents": [ "0b923606e75f1ab672e25b14ac039a1cdcfa382f" ], "author": { "name": "Peter Oberparleiter", "email": "oberpar@linux.vnet.ibm.com", "time": "Wed Jun 17 16:28:08 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 18 13:03:57 2009 -0700" }, "message": "gcov: add gcov profiling infrastructure\n\nEnable the use of GCC\u0027s coverage testing tool gcov [1] with the Linux\nkernel. gcov may be useful for:\n\n * debugging (has this code been reached at all?)\n * test improvement (how do I change my test to cover these lines?)\n * minimizing kernel configurations (do I need this option if the\n associated code is never run?)\n\nThe profiling patch incorporates the following changes:\n\n * change kbuild to include profiling flags\n * provide functions needed by profiling code\n * present profiling data as files in debugfs\n\nNote that on some architectures, enabling gcc\u0027s profiling option\n\"-fprofile-arcs\" for the entire kernel may trigger compile/link/\nrun-time problems, some of which are caused by toolchain bugs and\nothers which require adjustment of architecture code.\n\nFor this reason profiling the entire kernel is initially restricted\nto those architectures for which it is known to work without changes.\nThis restriction can be lifted once an architecture has been tested\nand found compatible with gcc\u0027s profiling. Profiling of single files\nor directories is still available on all platforms (see config help\ntext).\n\n[1] http://gcc.gnu.org/onlinedocs/gcc/Gcov.html\n\nSigned-off-by: Peter Oberparleiter \u003coberpar@linux.vnet.ibm.com\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nCc: Huang Ying \u003cying.huang@intel.com\u003e\nCc: Li Wei \u003cW.Li@Sun.COM\u003e\nCc: Michael Ellerman \u003cmichaele@au1.ibm.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Heiko Carstens \u003cheicars2@linux.vnet.ibm.com\u003e\nCc: Martin Schwidefsky \u003cmschwid2@linux.vnet.ibm.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nCc: WANG Cong \u003cxiyou.wangcong@gmail.com\u003e\nCc: Sam Ravnborg \u003csam@ravnborg.org\u003e\nCc: Jeff Dike \u003cjdike@addtoit.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "eadb8a091b27a840de7450f84ecff5ef13476424", "tree": "58c3782d40def63baa8167f3d31e3048cb4c7660", "parents": [ "73874005cd8800440be4299bd095387fff4b90ac", "65795efbd380a832ae508b04dba8f8e53f0b84d9" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jun 17 12:52:15 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jun 17 12:56:49 2009 +0200" }, "message": "Merge branch \u0027linus\u0027 into tracing/hw-breakpoints\n\nConflicts:\n\tarch/x86/Kconfig\n\tarch/x86/kernel/traps.c\n\tarch/x86/power/cpu.c\n\tarch/x86/power/cpu_32.c\n\tkernel/Makefile\n\nSemantic conflict:\n\tarch/x86/kernel/hw_breakpoint.c\n\nMerge reason: Resolve the conflicts, move from put_cpu_no_sched() to\n put_cpu() in arch/x86/kernel/hw_breakpoint.c.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "30639b6af85a92491b22dd14c17b14ca11da60e6", "tree": "f21c4dd631da5b8750678958b29947d4d0e90cb0", "parents": [ "8b0b1db0133e4218a9b45c09e53793c039edebe1" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Tue Jun 16 15:33:40 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jun 16 19:47:48 2009 -0700" }, "message": "groups: move code to kernel/groups.c\n\nMove supplementary groups implementation to kernel/groups.c .\nkernel/sys.c already accumulated quite a few random stuff.\n\nDo strictly copy/paste + add required headers to compile. Compile-tested\non many configs and archs.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "940010c5a314a7bd9b498593bc6ba1718ac5aec5", "tree": "d141e08ced08c40c6a8e3ab2cdecde5ff14e560f", "parents": [ "8dc8e5e8bc0ce00b0f656bf972f67cd8a72759e5", "991ec02cdca33b03a132a0cacfe6f0aa0be9aa8d" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Jun 11 17:55:42 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Jun 11 17:55:42 2009 +0200" }, "message": "Merge branch \u0027linus\u0027 into perfcounters/core\n\nConflicts:\n\tarch/x86/kernel/irqinit.c\n\tarch/x86/kernel/irqinit_64.c\n\tarch/x86/kernel/traps.c\n\tarch/x86/mm/fault.c\n\tinclude/linux/sched.h\n\tkernel/exit.c\n" }, { "commit": "62a038d34db26771756cf3689e36de638bedd2c4", "tree": "4b435b34474a889d8a5c82b687e981d9e09abc91", "parents": [ "b332828c39326b1dca617f387dd15d12e81cd5f0" ], "author": { "name": "K.Prasad", "email": "prasad@linux.vnet.ibm.com", "time": "Mon Jun 01 23:43:33 2009 +0530" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Jun 02 22:46:58 2009 +0200" }, "message": "hw-breakpoints: introducing generic hardware breakpoint handler interfaces\n\nThis patch introduces the generic Hardware Breakpoint interfaces for both user\nand kernel space requests.\nThis core Api handles the hardware breakpoints through new helpers. It\nhandles the user-space breakpoints and kernel breakpoints in front of\narch implementation.\n\nOne can choose kernel wide breakpoints using the following helpers\nand passing them a generic struct hw_breakpoint:\n\n- register_kernel_hw_breakpoint()\n- unregister_kernel_hw_breakpoint()\n- modify_kernel_hw_breakpoint()\n\nOn the other side, you can choose per task breakpoints.\n\n- register_user_hw_breakpoint()\n- unregister_user_hw_breakpoint()\n- modify_user_hw_breakpoint()\n\n[ fweisbec@gmail.com: fix conflict against perfcounter ]\n\nOriginal-patch-by: Alan Stern \u003cstern@rowland.harvard.edu\u003e\nSigned-off-by: K.Prasad \u003cprasad@linux.vnet.ibm.com\u003e\nReviewed-by: Alan Stern \u003cstern@rowland.harvard.edu\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "416dfdcdb894432547ead4fcb9fa6a36b396059e", "tree": "8033fdda07397a59c5fa98c88927040906ce6c1a", "parents": [ "56449f437add737a1e5e1cb7e00f63ac8ead1938", "091069740304c979f957ceacec39c461d0192158" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Apr 24 10:11:18 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Apr 24 10:11:23 2009 +0200" }, "message": "Merge commit \u0027v2.6.30-rc3\u0027 into tracing/hw-branch-tracing\n\nConflicts:\n\tarch/x86/kernel/ptrace.c\n\nMerge reason: fix the conflict above, and also pick up the CONFIG_BROKEN\n dependency change from upstream so that we can remove it\n\t here.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "56449f437add737a1e5e1cb7e00f63ac8ead1938", "tree": "d7c8f0f783534d3cfe550606b871d9bbeaa6e3f3", "parents": [ "a34b50ddc265bae058c66661b096ef6384c5a8b1" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Apr 14 11:24:36 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Apr 14 18:35:13 2009 +0200" }, "message": "tracing: make the trace clocks available generally\n\nJeremy Fitzhardinge reported this build failure:\n\n LD\t .tmp_vmlinux1\n arch/x86/kernel/built-in.o: In function `ds_take_timestamp\u0027:\n git/linux/arch/x86/kernel/ds.c:1380: undefined reference to `trace_clock_global\u0027\n git/linux/arch/x86/kernel/ds.c:1380: undefined reference to `trace_clock_global\u0027\n\nWhich is due to !CONFIG_TRACING \u0026\u0026 CONFIG_X86_DS\u003dy.\n\nExpose the trace clock code to CONFIG_X86_DS as well.\n\n[ Unfortunately librarizing doesnt work well - ancient architectures\n with no raw_local_irq_save() primitive break the build. ]\n\nReported-by: Jeremy Fitzhardinge \u003cjeremy@goop.org\u003e\nLKML-Reference: \u003c49E4413F.7070700@goop.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "5ea472a77f8e4811ceee3f44a9deda6ad6e8b789", "tree": "a9ec5019e2b666a19874fc344ffb0dd5da6bce94", "parents": [ "6c009ecef8cca28c7c09eb16d0802e37915a76e1", "577c9c456f0e1371cbade38eaf91ae8e8a308555" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Apr 08 10:35:30 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Apr 08 10:35:30 2009 +0200" }, "message": "Merge commit \u0027v2.6.30-rc1\u0027 into perfcounters/core\n\nConflicts:\n\tarch/powerpc/include/asm/systbl.h\n\tarch/powerpc/include/asm/unistd.h\n\tinclude/linux/init_task.h\n\nMerge reason: the conflicts are non-trivial: PowerPC placement\n of sys_perf_counter_open has to be mixed with the\n\t new preadv/pwrite syscalls.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "5e34437840d33554f69380584311743b39e8fbeb", "tree": "e081135619ee146af5efb9ee883afca950df5757", "parents": [ "77d05632baee21b1cef8730d7c06aa69601e4dca", "d508afb437daee7cf07da085b635c44a4ebf9b38" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Apr 07 11:15:40 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Apr 07 11:15:40 2009 +0200" }, "message": "Merge branch \u0027linus\u0027 into core/softlockup\n\nConflicts:\n\tkernel/sysctl.c\n" }, { "commit": "f541ae326fa120fa5c57433e4d9a133df212ce41", "tree": "bdbd94ec72cfc601118051cb35e8617d55510177", "parents": [ "e255357764f92afcafafbd4879b222b8c752065a", "0221c81b1b8eb0cbb6b30a0ced52ead32d2b4e4c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Apr 06 09:02:57 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Apr 06 09:02:57 2009 +0200" }, "message": "Merge branch \u0027linus\u0027 into perfcounters/core-v2\n\nMerge reason: we have gathered quite a few conflicts, need to merge upstream\n\nConflicts:\n\tarch/powerpc/kernel/Makefile\n\tarch/x86/ia32/ia32entry.S\n\tarch/x86/include/asm/hardirq.h\n\tarch/x86/include/asm/unistd_32.h\n\tarch/x86/include/asm/unistd_64.h\n\tarch/x86/kernel/cpu/common.c\n\tarch/x86/kernel/irq.c\n\tarch/x86/kernel/syscall_table_32.S\n\tarch/x86/mm/iomap_32.c\n\tinclude/linux/sched.h\n\tkernel/Makefile\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "07fe7cb7c7c179f473fd9c823348fd3eb5dad369", "tree": "516c959de929a4c39870629e550b3307601fa73f", "parents": [ "8fe74cf053de7ad2124a894996f84fa890a81093" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Apr 03 16:42:35 2009 +0100" }, "committer": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Apr 03 16:42:35 2009 +0100" }, "message": "Create a dynamically sized pool of threads for doing very slow work items\n\nCreate a dynamically sized pool of threads for doing very slow work items, such\nas invoking mkdir() or rmdir() - things that may take a long time and may\nsleep, holding mutexes/semaphores and hogging a thread, and are thus unsuitable\nfor workqueues.\n\nThe number of threads is always at least a settable minimum, but more are\nstarted when there\u0027s more work to do, up to a limit. Because of the nature of\nthe load, it\u0027s not suitable for a 1-thread-per-CPU type pool. A system with\none CPU may well want several threads.\n\nThis is used by FS-Cache to do slow caching operations in the background, such\nas looking up, creating or deleting cache objects.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nAcked-by: Steve Dickson \u003csteved@redhat.com\u003e\nAcked-by: Trond Myklebust \u003cTrond.Myklebust@netapp.com\u003e\nAcked-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nTested-by: Daire Byrne \u003cDaire.Byrne@framestore.com\u003e\n" }, { "commit": "8e818179eb9e8f9e44d8410dd2a25077d026a08e", "tree": "7d08afd30c95c04129c20693d974a18799caeb5a", "parents": [ "742bd95ba96e19b3f7196c3a0834ebc17c8ba006", "ecc25fbd6b9e07b33895c61ddf84006b00f55d99" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Feb 26 13:02:23 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Feb 26 13:02:23 2009 +0100" }, "message": "Merge branch \u0027x86/core\u0027 into perfcounters/core\n\nConflicts:\n\tarch/x86/kernel/apic/apic.c\n\tarch/x86/kernel/irqinit_32.c\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "42f5e039c3f6512271636928ddc4e7f7a0371672", "tree": "6582d5f88aeaf112e2293a2147f263fb726352cb", "parents": [ "67e055d144c5b2acdc1c63811fde031263bf92c5" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Wed Feb 18 14:48:21 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Feb 18 15:37:54 2009 -0800" }, "message": "pm: fix build for CONFIG_PM unset\n\nCompilation of kprobes.c with CONFIG_PM unset is broken due to some broken\nconfig dependncies. Fix that.\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nReported-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nTested-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Len Brown \u003clenb@kernel.org\u003e\nAcked-by: Pavel Machek \u003cpavel@suse.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "871cafcc962fa1655c44b4f0e54d4c5cc14e273c", "tree": "fdb7bc65d2606c85b7be6c33ba0dfd5b4e472245", "parents": [ "cf2592f59c0e8ed4308adbdb2e0a88655379d579", "b578f3fcca1e78624dfb5f358776e63711d7fda2" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Feb 12 13:08:57 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Feb 12 13:08:57 2009 +0100" }, "message": "Merge branch \u0027linus\u0027 into core/softlockup\n" }, { "commit": "77835492ed489c0b870f82f4c50687bd267acc0a", "tree": "d80903ce1b8dd30aa44ccfc756616ad4d6c74d63", "parents": [ "af37501c792107c2bde1524bdae38d9a247b841a", "1de9e8e70f5acc441550ca75433563d91b269bbe" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 21 16:37:27 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 21 16:37:27 2009 +0100" }, "message": "Merge commit \u0027v2.6.29-rc2\u0027 into perfcounters/core\n\nConflicts:\n\tinclude/linux/syscalls.h\n" }, { "commit": "af37501c792107c2bde1524bdae38d9a247b841a", "tree": "b50ee90d29e72956b8b7d8d19677fe5996755d49", "parents": [ "d859e29fe34cb833071b20aef860ee94fbad9bb2", "99937d6455cea95405ac681c86a857d0fcd530bd" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Jan 18 18:15:49 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Jan 18 18:15:49 2009 +0100" }, "message": "Merge branch \u0027core/percpu\u0027 into perfcounters/core\n\nConflicts:\n\tarch/x86/include/asm/pda.h\n\nWe merge tip/core/percpu into tip/perfcounters/core because of a\nsemantic and contextual conflict: the former eliminates the PDA,\nwhile the latter extends it with apic_perf_irqs field.\n\nResolve the conflict by moving the new field to the irq_cpustat\nstructure on 64-bit too.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "e162b39a368f0401e41b558f430c354d12a85b37", "tree": "3fb7e4d48f398d62e5074e7e3dd183cc54f59820", "parents": [ "c903ff837909ccada51243307d4239f86af40179" ], "author": { "name": "Mandeep Singh Baines", "email": "msb@google.com", "time": "Thu Jan 15 11:08:40 2009 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jan 16 14:06:04 2009 +0100" }, "message": "softlockup: decouple hung tasks check from softlockup detection\n\nDecoupling allows:\n\n* hung tasks check to happen at very low priority\n\n* hung tasks check and softlockup to be enabled/disabled independently\n at compile and/or run-time\n\n* individual panic settings to be enabled disabled independently\n at compile and/or run-time\n\n* softlockup threshold to be reduced without increasing hung tasks\n poll frequency (hung task check is expensive relative to softlock watchdog)\n\n* hung task check to be zero over-head when disabled at run-time\n\nSigned-off-by: Mandeep Singh Baines \u003cmsb@google.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "9316fcacb89c59fe556c48587ac02cd7f5d38045", "tree": "01e358788e2aef292d46fb8c1f598edf3449fe47", "parents": [ "18e6959c385f3edf3991fa6662a53dac4eb10d5b" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Wed Jan 14 09:35:44 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jan 14 09:42:11 2009 -0800" }, "message": "kernel/up.c: omit it if SMP\u003dy, USE_GENERIC_SMP_HELPERS\u003dn\n\nFix the sparc build - we were including `up.o\u0027 on SMP builds, when\nCONFIG_USE_GENERIC_SMP_HELPERS\u003dn.\n\nTested-by: Robert Reif \u003creif@earthlink.net\u003e\nFixed-by: Robert Reif \u003creif@earthlink.net\u003e\nCc: David Miller \u003cdavem@davemloft.net\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "53ce3d9564908794ae7dd32969089b57df5fc098", "tree": "d0eb540d9743155eff6d3c454db3493bf75c9023", "parents": [ "abede81c4fb2e3b85d8760f25e3da39d2c69a134" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Fri Jan 09 12:27:08 2009 -0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Jan 11 03:41:58 2009 +0100" }, "message": "smp_call_function_single(): be slightly less stupid\n\nIf you do\n\n\tsmp_call_function_single(expression-with-side-effects, ...)\n\nthen expression-with-side-effects never gets evaluated on UP builds.\n\nAs always, implementing it in C is the correct thing to do.\n\nWhile we\u0027re there, uninline it for size and possible header dependency\nreasons.\n\nAnd create a new kernel/up.c, as a place in which to put\nuniprocessor-specific code and storage. It should mirror kernel/smp.c.\n\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "506c10f26c481b7f8ef27c1c79290f68989b2e9e", "tree": "03de82e812f00957aa6276dac2fe51c3358e88d7", "parents": [ "e1df957670aef74ffd9a4ad93e6d2c90bf6b4845", "c59765042f53a79a7a65585042ff463b69cb248c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Jan 11 02:42:53 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Jan 11 02:42:53 2009 +0100" }, "message": "Merge commit \u0027v2.6.29-rc1\u0027 into perfcounters/core\n\nConflicts:\n\tinclude/linux/kernel_stat.h\n" }, { "commit": "22a9d645677feefd402befd02edd59b122289ef1", "tree": "9f1215cc8f7f0e1c36b03882b2926cc26ccfa5ff", "parents": [ "ede6f5aea054d3fb67c78857f7abdee602302043" ], "author": { "name": "Arjan van de Ven", "email": "arjan@linux.intel.com", "time": "Wed Jan 07 08:45:46 2009 -0800" }, "committer": { "name": "Arjan van de Ven", "email": "arjan@linux.intel.com", "time": "Wed Jan 07 08:45:46 2009 -0800" }, "message": "async: Asynchronous function calls to speed up kernel boot\n\nRight now, most of the kernel boot is strictly synchronous, such that\nvarious hardware delays are done sequentially.\n\nIn order to make the kernel boot faster, this patch introduces\ninfrastructure to allow doing some of the initialization steps\nasynchronously, which will hide significant portions of the hardware delays\nin practice.\n\nIn order to not change device order and other similar observables, this\npatch does NOT do full parallel initialization.\n\nRather, it operates more in the way an out of order CPU does; the work may\nbe done out of order and asynchronous, but the observable effects\n(instruction retiring for the CPU) are still done in the original sequence.\n\nSigned-off-by: Arjan van de Ven \u003carjan@linux.intel.com\u003e\n" }, { "commit": "5f34fe1cfc1bdd8b4711bbe37421fba4ed0d1ed4", "tree": "85b21c8bb0e53005bd970d648ca093acfd0584a3", "parents": [ "eca1bf5b4fab56d2feb1572d34d59fcd92ea7df3", "6638101c1124c19c8a65b1645e4ecd09e0572f3e" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Dec 30 16:10:19 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Dec 30 16:10:19 2008 -0800" }, "message": "Merge branch \u0027core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (63 commits)\n stacktrace: provide save_stack_trace_tsk() weak alias\n rcu: provide RCU options on non-preempt architectures too\n printk: fix discarding message when recursion_bug\n futex: clean up futex_(un)lock_pi fault handling\n \"Tree RCU\": scalable classic RCU implementation\n futex: rename field in futex_q to clarify single waiter semantics\n x86/swiotlb: add default swiotlb_arch_range_needs_mapping\n x86/swiotlb: add default phys\u003c-\u003ebus conversion\n x86: unify pci iommu setup and allow swiotlb to compile for 32 bit\n x86: add swiotlb allocation functions\n swiotlb: consolidate swiotlb info message printing\n swiotlb: support bouncing of HighMem pages\n swiotlb: factor out copy to/from device\n swiotlb: add arch hook to force mapping\n swiotlb: allow architectures to override phys\u003c-\u003ebus\u003c-\u003ephys conversions\n swiotlb: add comment where we handle the overflow of a dma mask on 32 bit\n rcu: fix rcutorture behavior during reboot\n resources: skip sanity check of busy resources\n swiotlb: move some definitions to header\n swiotlb: allow architectures to override swiotlb pool allocation\n ...\n\nFix up trivial conflicts in\n arch/x86/kernel/Makefile\n arch/x86/mm/init_32.c\n include/linux/hardirq.h\nas per Ingo\u0027s suggestions.\n" }, { "commit": "e1df957670aef74ffd9a4ad93e6d2c90bf6b4845", "tree": "bca1fcfef55b3e3e82c9a822b4ac6428fce2b419", "parents": [ "2b583d8bc8d7105b58d7481a4a0ceb718dac49c6", "3c92ec8ae91ecf59d88c798301833d7cf83f2179" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Dec 29 09:45:15 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Dec 29 09:45:15 2008 +0100" }, "message": "Merge branch \u0027linus\u0027 into perfcounters/core\n\nConflicts:\n\tfs/exec.c\n\tinclude/linux/init_task.h\n\nSimple context conflicts.\n" }, { "commit": "a39b863342b8aba52390092be95db58f6ed56061", "tree": "a952625e9815c0a4d7fe9f85c33908068513429a", "parents": [ "b0f4b285d7ed174804658539129a834270f4829a", "4e202284e6ac1695df3eb4a0e549ea78addfb663" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Dec 28 12:27:58 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Dec 28 12:27:58 2008 -0800" }, "message": "Merge branch \u0027sched-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027sched-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (31 commits)\n sched: fix warning in fs/proc/base.c\n schedstat: consolidate per-task cpu runtime stats\n sched: use RCU variant of list traversal in for_each_leaf_rt_rq()\n sched, cpuacct: export percpu cpuacct cgroup stats\n sched, cpuacct: refactoring cpuusage_read / cpuusage_write\n sched: optimize update_curr()\n sched: fix wakeup preemption clock\n sched: add missing arch_update_cpu_topology() call\n sched: let arch_update_cpu_topology indicate if topology changed\n sched: idle_balance() does not call load_balance_newidle()\n sched: fix sd_parent_degenerate on non-numa smp machine\n sched: add uid information to sched_debug for CONFIG_USER_SCHED\n sched: move double_unlock_balance() higher\n sched: update comment for move_task_off_dead_cpu\n sched: fix inconsistency when redistribute per-cpu tg-\u003ecfs_rq shares\n sched/rt: removed unneeded defintion\n sched: add hierarchical accounting to cpu accounting controller\n sched: include group statistics in /proc/sched_debug\n sched: rename SCHED_NO_NO_OMIT_FRAME_POINTER \u003d\u003e SCHED_OMIT_FRAME_POINTER\n sched: clean up SCHED_CPUMASK_ALLOC\n ...\n" }, { "commit": "64db4cfff99c04cd5f550357edcc8780f96b54a2", "tree": "4856e788d21f0e31ed78a22b70b4521f7237705e", "parents": [ "d110ec3a1e1f522e2e9dfceb9c36d6590c26d2d4" ], "author": { "name": "Paul E. McKenney", "email": "paulmck@linux.vnet.ibm.com", "time": "Thu Dec 18 21:55:32 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Dec 18 21:56:04 2008 +0100" }, "message": "\"Tree RCU\": scalable classic RCU implementation\n\nThis patch fixes a long-standing performance bug in classic RCU that\nresults in massive internal-to-RCU lock contention on systems with\nmore than a few hundred CPUs. Although this patch creates a separate\nflavor of RCU for ease of review and patch maintenance, it is intended\nto replace classic RCU.\n\nThis patch still handles stress better than does mainline, so I am still\ncalling it ready for inclusion. This patch is against the -tip tree.\nNevertheless, experience on an actual 1000+ CPU machine would still be\nmost welcome.\n\nMost of the changes noted below were found while creating an rcutiny\n(which should permit ejecting the current rcuclassic) and while doing\ndetailed line-by-line documentation.\n\nUpdates from v9 (http://lkml.org/lkml/2008/12/2/334):\n\no\tFixes from remainder of line-by-line code walkthrough,\n\tincluding comment spelling, initialization, undesirable\n\tnarrowing due to type conversion, removing redundant memory\n\tbarriers, removing redundant local-variable initialization,\n\tand removing redundant local variables.\n\n\tI do not believe that any of these fixes address the CPU-hotplug\n\tissues that Andi Kleen was seeing, but please do give it a whirl\n\tin case the machine is smarter than I am.\n\n\tA writeup from the walkthrough may be found at the following\n\tURL, in case you are suffering from terminal insomnia or\n\tmasochism:\n\n\thttp://www.kernel.org/pub/linux/kernel/people/paulmck/tmp/rcutree-walkthrough.2008.12.16a.pdf\n\no\tMade rcutree tracing use seq_file, as suggested some time\n\tago by Lai Jiangshan.\n\no\tAdded a .csv variant of the rcudata debugfs trace file, to allow\n\tpeople having thousands of CPUs to drop the data into\n\ta spreadsheet.\tTested with oocalc and gnumeric. Updated\n\tdocumentation to suit.\n\nUpdates from v8 (http://lkml.org/lkml/2008/11/15/139):\n\no\tFix a theoretical race between grace-period initialization and\n\tforce_quiescent_state() that could occur if more than three\n\tjiffies were required to carry out the grace-period\n\tinitialization. Which it might, if you had enough CPUs.\n\no\tApply Ingo\u0027s printk-standardization patch.\n\no\tSubstitute local variables for repeated accesses to global\n\tvariables.\n\no\tFix comment misspellings and redundant (but harmless) increments\n\tof -\u003en_rcu_pending (this latter after having explicitly added it).\n\no\tApply checkpatch fixes.\n\nUpdates from v7 (http://lkml.org/lkml/2008/10/10/291):\n\no\tFixed a number of problems noted by Gautham Shenoy, including\n\tthe cpu-stall-detection bug that he was having difficulty\n\tconvincing me was real. ;-)\n\no\tChanged cpu-stall detection to wait for ten seconds rather than\n\tthree in order to reduce false positive, as suggested by Ingo\n\tMolnar.\n\no\tProduced a design document (http://lwn.net/Articles/305782/).\n\tThe act of writing this document uncovered a number of both\n\ttheoretical and \"here and now\" bugs as noted below.\n\no\tFix dynticks_nesting accounting confusion, simplify WARN_ON()\n\tcondition, fix kerneldoc comments, and add memory barriers\n\tin dynticks interface functions.\n\no\tAdd more data to tracing.\n\no\tRemove unused \"rcu_barrier\" field from rcu_data structure.\n\no\tCount calls to rcu_pending() from scheduling-clock interrupt\n\tto use as a surrogate timebase should jiffies stop counting.\n\no\tFix a theoretical race between force_quiescent_state() and\n\tgrace-period initialization. Yes, initialization does have to\n\tgo on for some jiffies for this race to occur, but given enough\n\tCPUs...\n\nUpdates from v6 (http://lkml.org/lkml/2008/9/23/448):\n\no\tFix a number of checkpatch.pl complaints.\n\no\tApply review comments from Ingo Molnar and Lai Jiangshan\n\ton the stall-detection code.\n\no\tFix several bugs in !CONFIG_SMP builds.\n\no\tFix a misspelled config-parameter name so that RCU now announces\n\tat boot time if stall detection is configured.\n\no\tRun tests on numerous combinations of configurations parameters,\n\twhich after the fixes above, now build and run correctly.\n\nUpdates from v5 (http://lkml.org/lkml/2008/9/15/92, bad subject line):\n\no\tFix a compiler error in the !CONFIG_FANOUT_EXACT case (blew a\n\tchangeset some time ago, and finally got around to retesting\n\tthis option).\n\no\tFix some tracing bugs in rcupreempt that caused incorrect\n\ttotals to be printed.\n\no\tI now test with a more brutal random-selection online/offline\n\tscript (attached). Probably more brutal than it needs to be\n\ton the people reading it as well, but so it goes.\n\no\tA number of optimizations and usability improvements:\n\n\to\tMake rcu_pending() ignore the grace-period timeout when\n\t\tthere is no grace period in progress.\n\n\to\tMake force_quiescent_state() avoid going for a global\n\t\tlock in the case where there is no grace period in\n\t\tprogress.\n\n\to\tRearrange struct fields to improve struct layout.\n\n\to\tMake call_rcu() initiate a grace period if RCU was\n\t\tidle, rather than waiting for the next scheduling\n\t\tclock interrupt.\n\n\to\tInvoke rcu_irq_enter() and rcu_irq_exit() only when\n\t\tidle, as suggested by Andi Kleen. I still don\u0027t\n\t\tcompletely trust this change, and might back it out.\n\n\to\tMake CONFIG_RCU_TRACE be the single config variable\n\t\tmanipulated for all forms of RCU, instead of the prior\n\t\tconfusion.\n\n\to\tDocument tracing files and formats for both rcupreempt\n\t\tand rcutree.\n\nUpdates from v4 for those missing v5 given its bad subject line:\n\no\tSeparated dynticks interface so that NMIs and irqs call separate\n\tfunctions, greatly simplifying it. In particular, this code\n\tno longer requires a proof of correctness. ;-)\n\no\tSeparated dynticks state out into its own per-CPU structure,\n\tavoiding the duplicated accounting.\n\no\tThe case where a dynticks-idle CPU runs an irq handler that\n\tinvokes call_rcu() is now correctly handled, forcing that CPU\n\tout of dynticks-idle mode.\n\no\tReview comments have been applied (thank you all!!!).\n\tFor but one example, fixed the dynticks-ordering issue that\n\tManfred pointed out, saving me much debugging. ;-)\n\no\tAdjusted rcuclassic and rcupreempt to handle dynticks changes.\n\nAttached is an updated patch to Classic RCU that applies a hierarchy,\ngreatly reducing the contention on the top-level lock for large machines.\nThis passes 10-hour concurrent rcutorture and online-offline testing on\n128-CPU ppc64 without dynticks enabled, and exposes some timekeeping\nbugs in presence of dynticks (exciting working on a system where\n\"sleep 1\" hangs until interrupted...), which were fixed in the\n2.6.27 kernel. It is getting more reliable than mainline by some\nmeasures, so the next version will be against -tip for inclusion.\nSee also Manfred Spraul\u0027s recent patches (or his earlier work from\n2004 at http://marc.info/?l\u003dlinux-kernel\u0026m\u003d108546384711797\u0026w\u003d2).\nWe will converge onto a common patch in the fullness of time, but are\ncurrently exploring different regions of the design space. That said,\nI have already gratefully stolen quite a few of Manfred\u0027s ideas.\n\nThis patch provides CONFIG_RCU_FANOUT, which controls the bushiness\nof the RCU hierarchy. Defaults to 32 on 32-bit machines and 64 on\n64-bit machines. If CONFIG_NR_CPUS is less than CONFIG_RCU_FANOUT,\nthere is no hierarchy. By default, the RCU initialization code will\nadjust CONFIG_RCU_FANOUT to balance the hierarchy, so strongly NUMA\narchitectures may choose to set CONFIG_RCU_FANOUT_EXACT to disable\nthis balancing, allowing the hierarchy to be exactly aligned to the\nunderlying hardware. Up to two levels of hierarchy are permitted\n(in addition to the root node), allowing up to 16,384 CPUs on 32-bit\nsystems and up to 262,144 CPUs on 64-bit systems. I just know that I\nam going to regret saying this, but this seems more than sufficient\nfor the foreseeable future. (Some architectures might wish to set\nCONFIG_RCU_FANOUT\u003d4, which would limit such architectures to 64 CPUs.\nIf this becomes a real problem, additional levels can be added, but I\ndoubt that it will make a significant difference on real hardware.)\n\nIn the common case, a given CPU will manipulate its private rcu_data\nstructure and the rcu_node structure that it shares with its immediate\nneighbors. This can reduce both lock and memory contention by multiple\norders of magnitude, which should eliminate the need for the strange\nmanipulations that are reported to be required when running Linux on\nvery large systems.\n\nSome shortcomings:\n\no\tMore bugs will probably surface as a result of an ongoing\n\tline-by-line code inspection.\n\n\tPatches will be provided as required.\n\no\tThere are probably hangs, rcutorture failures, \u0026c. Seems\n\tquite stable on a 128-CPU machine, but that is kind of small\n\tcompared to 4096 CPUs. However, seems to do better than\n\tmainline.\n\n\tPatches will be provided as required.\n\no\tThe memory footprint of this version is several KB larger\n\tthan rcuclassic.\n\n\tA separate UP-only rcutiny patch will be provided, which will\n\treduce the memory footprint significantly, even compared\n\tto the old rcuclassic. One such patch passes light testing,\n\tand has a memory footprint smaller even than rcuclassic.\n\tInitial reaction from various embedded guys was \"it is not\n\tworth it\", so am putting it aside.\n\nCredits:\n\no\tManfred Spraul for ideas, review comments, and bugs spotted,\n\tas well as some good friendly competition. ;-)\n\no\tJosh Triplett, Ingo Molnar, Peter Zijlstra, Mathieu Desnoyers,\n\tLai Jiangshan, Andi Kleen, Andy Whitcroft, and Andrew Morton\n\tfor reviews and comments.\n\no\tThomas Gleixner for much-needed help with some timer issues\n\t(see patches below).\n\no\tJon M. Tollefson, Tim Pepper, Andrew Theurer, Jose R. Santos,\n\tAndy Whitcroft, Darrick Wong, Nishanth Aravamudan, Anton\n\tBlanchard, Dave Kleikamp, and Nathan Lynch for keeping machines\n\talive despite my heavy abuse^Wtesting.\n\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "0793a61d4df8daeac6492dbf8d2f3e5713caae5e", "tree": "cc9603eb8daffeb7ace521c42a6a44db164ac551", "parents": [ "b5aa97e83bcc31a96374d18f5452d53909a16c90" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Thu Dec 04 20:12:29 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Dec 08 15:47:03 2008 +0100" }, "message": "performance counters: core code\n\nImplement the core kernel bits of Performance Counters subsystem.\n\nThe Linux Performance Counter subsystem provides an abstraction of\nperformance counter hardware capabilities. It provides per task and per\nCPU counters, and it provides event capabilities on top of those.\n\nPerformance counters are accessed via special file descriptors.\nThere\u0027s one file descriptor per virtual counter used.\n\nThe special file descriptor is opened via the perf_counter_open()\nsystem call:\n\n int\n perf_counter_open(u32 hw_event_type,\n u32 hw_event_period,\n u32 record_type,\n pid_t pid,\n int cpu);\n\nThe syscall returns the new fd. The fd can be used via the normal\nVFS system calls: read() can be used to read the counter, fcntl()\ncan be used to set the blocking mode, etc.\n\nMultiple counters can be kept open at a time, and the counters\ncan be poll()ed.\n\nSee more details in Documentation/perf-counters.txt.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "3ac3ba0b396fd99550e08034b0e4c27fdf39c252", "tree": "f9f69fac41d66540a37a33808714d055d702328f", "parents": [ "934352f214b3251eb0793c1209d346595a661d80", "7f0f598a0069d1ab072375965a4b69137233169c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Nov 19 09:44:37 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Nov 19 09:44:37 2008 +0100" }, "message": "Merge branch \u0027linus\u0027 into sched/core\n\nConflicts:\n\tkernel/Makefile\n" }, { "commit": "f3a5c547012a09f38f7c27b17a8e3150b69cd259", "tree": "4d1d47382a4a445fc7ef7431bcf5d06b7cca8539", "parents": [ "e50a906e0200084f04f8f3b7c3a14b0442d1347f", "4e14e833ac3b97a4aa8803eea49f899adc5bb5f4" ], "author": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Tue Nov 18 18:52:37 2008 +1100" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Tue Nov 18 18:52:37 2008 +1100" }, "message": "Merge branch \u0027master\u0027 into next\n\nConflicts:\n\tfs/cifs/misc.c\n\nMerge to resolve above, per the patch below.\n\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n\ndiff --cc fs/cifs/misc.c\nindex ec36410,addd1dc..0000000\n--- a/fs/cifs/misc.c\n+++ b/fs/cifs/misc.c\n@@@ -347,13 -338,13 +338,13 @@@ header_assemble(struct smb_hdr *buffer\n \t\t/* BB Add support for establishing new tCon and SMB Session */\n \t\t/* with userid/password pairs found on the smb session */\n \t\t/*\tfor other target tcp/ip addresses \t\tBB */\n -\t\t\t\tif (current-\u003efsuid !\u003d treeCon-\u003eses-\u003elinux_uid) {\n +\t\t\t\tif (current_fsuid() !\u003d treeCon-\u003eses-\u003elinux_uid) {\n \t\t\t\t\tcFYI(1, (\"Multiuser mode and UID \"\n \t\t\t\t\t\t \"did not match tcon uid\"));\n- \t\t\t\t\tread_lock(\u0026GlobalSMBSeslock);\n- \t\t\t\t\tlist_for_each(temp_item, \u0026GlobalSMBSessionList) {\n- \t\t\t\t\t\tses \u003d list_entry(temp_item, struct cifsSesInfo, cifsSessionList);\n+ \t\t\t\t\tread_lock(\u0026cifs_tcp_ses_lock);\n+ \t\t\t\t\tlist_for_each(temp_item, \u0026treeCon-\u003eses-\u003eserver-\u003esmb_ses_list) {\n+ \t\t\t\t\t\tses \u003d list_entry(temp_item, struct cifsSesInfo, smb_ses_list);\n -\t\t\t\t\t\tif (ses-\u003elinux_uid \u003d\u003d current-\u003efsuid) {\n +\t\t\t\t\t\tif (ses-\u003elinux_uid \u003d\u003d current_fsuid()) {\n \t\t\t\t\t\t\tif (ses-\u003eserver \u003d\u003d treeCon-\u003eses-\u003eserver) {\n \t\t\t\t\t\t\t\tcFYI(1, (\"found matching uid substitute right smb_uid\"));\n \t\t\t\t\t\t\t\tbuffer-\u003eUid \u003d ses-\u003eSuid;\n" }, { "commit": "65ecc14a30ad21bed9aabdfd6a2ae1a1aaaa6a00", "tree": "0245f08c672b54a914df9bbb54dff98ed685a3c7", "parents": [ "e77a20e8ef6784586cfd66f4346af88ddb11173f" ], "author": { "name": "Kumar Gala", "email": "galak@kernel.crashing.org", "time": "Sat Nov 15 12:02:34 2008 -0600" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Nov 17 13:24:35 2008 -0800" }, "message": "Remove -mno-spe flags as they dont belong\n\nFor some unknown reason at Steven Rostedt added in disabling of the SPE\ninstruction generation for e500 based PPC cores in commit\n6ec562328fda585be2d7f472cfac99d3b44d362a.\n\nWe are removing it because:\n\n1. It generates e500 kernels that don\u0027t work\n2. its not the correct set of flags to do this\n3. we handle this in the arch/powerpc/Makefile already\n4. its unknown in talking to Steven why he did this\n\nSigned-off-by: Kumar Gala \u003cgalak@kernel.crashing.org\u003e\nTested-and-Acked-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f1752eec6145c97163dbce62d17cf5d928e28a27", "tree": "16bc51166d38815092de36a461b845b0b4b522f9", "parents": [ "b6dff3ec5e116e3af6f537d4caedcad6b9e5082a" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri Nov 14 10:39:17 2008 +1100" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Fri Nov 14 10:39:17 2008 +1100" }, "message": "CRED: Detach the credentials from task_struct\n\nDetach the credentials from task_struct, duplicating them in copy_process()\nand releasing them in __put_task_struct().\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: James Morris \u003cjmorris@namei.org\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "ae1e9130bfb9ad55eb97ec3fb17a122b7a118f98", "tree": "fa37f195008d540a4a69e562f6796b23831f0b56", "parents": [ "6d21cd62516a9697cb7ec33cc52e6b814fb65a13" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Nov 11 09:05:16 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Nov 11 08:59:20 2008 +0100" }, "message": "sched: rename SCHED_NO_NO_OMIT_FRAME_POINTER \u003d\u003e SCHED_OMIT_FRAME_POINTER\n\nImpact: cleanup, change .config option name\n\nWe had this ugly config name for a long time for hysteric raisons.\nRename it to a saner name.\n\nWe still cannot get rid of it completely, until /proc/\u003cpid\u003e/stack\nusage replaces WCHAN usage for good.\n\nWe\u0027ll be able to do that in the v2.6.29/v2.6.30 timeframe.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "8bb8c4386d08f2cc5d871d22f220d35032213f84", "tree": "db34e8802555c0ee54029fdc82ae6b9905558b3a", "parents": [ "db5935001a43528e673ad26ffec9d98c60a496a9" ], "author": { "name": "Peter Zijlstra", "email": "peterz@infradead.org", "time": "Sat Nov 01 00:13:49 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Nov 03 08:58:55 2008 +0100" }, "message": "sched, ftrace: trace sched.c\n\nImpact: allow function tracing within sched.c\n\nIts useful to see what happens in sched.c.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "debfcaf93ed500a051489db6646d71f29fe86a68", "tree": "7ba189b6dd654022ecc655b68e3c0a4573627706", "parents": [ "2515ddc6db8eb49a79f0fe5e67ff09ac7c81eab4", "81520a1b0649d0701205b818714a8c1e1cfbbb5b" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Oct 22 09:08:14 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Oct 22 09:08:14 2008 +0200" }, "message": "Merge branch \u0027tracing/ftrace\u0027 into tracing/urgent\n" }, { "commit": "92b29b86fe2e183d44eb467e5e74a5f718ef2e43", "tree": "1bac8a1aa11d47322b66d10ec3a370016d843d06", "parents": [ "b9d7ccf56be1ac77b71a284a1c0e6337f9a7aff0", "98d9c66ab07471006fd7910cb16453581c41a3e7" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 20 13:35:07 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 20 13:35:07 2008 -0700" }, "message": "Merge branch \u0027tracing-v28-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027tracing-v28-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (131 commits)\n tracing/fastboot: improve help text\n tracing/stacktrace: improve help text\n tracing/fastboot: fix initcalls disposition in bootgraph.pl\n tracing/fastboot: fix bootgraph.pl initcall name regexp\n tracing/fastboot: fix issues and improve output of bootgraph.pl\n tracepoints: synchronize unregister static inline\n tracepoints: tracepoint_synchronize_unregister()\n ftrace: make ftrace_test_p6nop disassembler-friendly\n markers: fix synchronize marker unregister static inline\n tracing/fastboot: add better resolution to initcall debug/tracing\n trace: add build-time check to avoid overrunning hex buffer\n ftrace: fix hex output mode of ftrace\n tracing/fastboot: fix initcalls disposition in bootgraph.pl\n tracing/fastboot: fix printk format typo in boot tracer\n ftrace: return an error when setting a nonexistent tracer\n ftrace: make some tracers reentrant\n ring-buffer: make reentrant\n ring-buffer: move page indexes into page headers\n tracing/fastboot: only trace non-module initcalls\n ftrace: move pc counter in irqtrace\n ...\n\nManually fix conflicts:\n - init/main.c: initcall tracing\n - kernel/module.c: verbose level vs tracepoints\n - scripts/bootgraph.pl: fallout from cherry-picking commits.\n" }, { "commit": "606576ce816603d9fe1fb453a88bc6eea16ca709", "tree": "7c6844ff4d75f249df49e9e5fe97062d301c3a1f", "parents": [ "c2db8054c1eaf99983d8deee347876b01c26c2cf" ], "author": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon Oct 06 19:06:12 2008 -0400" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Oct 20 18:27:03 2008 +0200" }, "message": "ftrace: rename FTRACE to FUNCTION_TRACER\n\nDue to confusion between the ftrace infrastructure and the gcc profiling\ntracer \"ftrace\", this patch renames the config options from FTRACE to\nFUNCTION_TRACER. The other two names that are offspring from FTRACE\nDYNAMIC_FTRACE and FTRACE_MCOUNT_RECORD will stay the same.\n\nThis patch was generated mostly by script, and partially by hand.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "dc52ddc0e6f45b04780b26fc0813509f8e798c42", "tree": "384826e9fab4e434bc5c85ce744470ae472e52c3", "parents": [ "8174f1503f4bf7e9a14b3fbbfdb30c6be6e29f77" ], "author": { "name": "Matt Helsley", "email": "matthltc@us.ibm.com", "time": "Sat Oct 18 20:27:21 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 20 08:52:34 2008 -0700" }, "message": "container freezer: implement freezer cgroup subsystem\n\nThis patch implements a new freezer subsystem in the control groups\nframework. It provides a way to stop and resume execution of all tasks in\na cgroup by writing in the cgroup filesystem.\n\nThe freezer subsystem in the container filesystem defines a file named\nfreezer.state. Writing \"FROZEN\" to the state file will freeze all tasks\nin the cgroup. Subsequently writing \"RUNNING\" will unfreeze the tasks in\nthe cgroup. Reading will return the current state.\n\n* Examples of usage :\n\n # mkdir /containers/freezer\n # mount -t cgroup -ofreezer freezer /containers\n # mkdir /containers/0\n # echo $some_pid \u003e /containers/0/tasks\n\nto get status of the freezer subsystem :\n\n # cat /containers/0/freezer.state\n RUNNING\n\nto freeze all tasks in the container :\n\n # echo FROZEN \u003e /containers/0/freezer.state\n # cat /containers/0/freezer.state\n FREEZING\n # cat /containers/0/freezer.state\n FROZEN\n\nto unfreeze all tasks in the container :\n\n # echo RUNNING \u003e /containers/0/freezer.state\n # cat /containers/0/freezer.state\n RUNNING\n\nThis is the basic mechanism which should do the right thing for user space\ntask in a simple scenario.\n\nIt\u0027s important to note that freezing can be incomplete. In that case we\nreturn EBUSY. This means that some tasks in the cgroup are busy doing\nsomething that prevents us from completely freezing the cgroup at this\ntime. After EBUSY, the cgroup will remain partially frozen -- reflected\nby freezer.state reporting \"FREEZING\" when read. The state will remain\n\"FREEZING\" until one of these things happens:\n\n\t1) Userspace cancels the freezing operation by writing \"RUNNING\" to\n\t\tthe freezer.state file\n\t2) Userspace retries the freezing operation by writing \"FROZEN\" to\n\t\tthe freezer.state file (writing \"FREEZING\" is not legal\n\t\tand returns EIO)\n\t3) The tasks that blocked the cgroup from entering the \"FROZEN\"\n\t\tstate disappear from the cgroup\u0027s set of tasks.\n\n[akpm@linux-foundation.org: coding-style fixes]\n[akpm@linux-foundation.org: export thaw_process]\nSigned-off-by: Cedric Le Goater \u003cclg@fr.ibm.com\u003e\nSigned-off-by: Matt Helsley \u003cmatthltc@us.ibm.com\u003e\nAcked-by: Serge E. Hallyn \u003cserue@us.ibm.com\u003e\nTested-by: Matt Helsley \u003cmatthltc@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8174f1503f4bf7e9a14b3fbbfdb30c6be6e29f77", "tree": "a8df1ebd62255dd231452b3f72782604e8919991", "parents": [ "83224b08372be48d5fcefedc4886457da29130c8" ], "author": { "name": "Matt Helsley", "email": "matthltc@us.ibm.com", "time": "Sat Oct 18 20:27:19 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 20 08:52:33 2008 -0700" }, "message": "container freezer: make refrigerator always available\n\nNow that the TIF_FREEZE flag is available in all architectures, extract\nthe refrigerator() and freeze_task() from kernel/power/process.c and make\nit available to all.\n\nThe refrigerator() can now be used in a control group subsystem\nimplementing a control group freezer.\n\nSigned-off-by: Cedric Le Goater \u003cclg@fr.ibm.com\u003e\nSigned-off-by: Matt Helsley \u003cmatthltc@us.ibm.com\u003e\nAcked-by: Serge E. Hallyn \u003cserue@us.ibm.com\u003e\nTested-by: Matt Helsley \u003cmatthltc@us.ibm.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": "97e1c18e8d17bd87e1e383b2e9d9fc740332c8e2", "tree": "5c6bfce8bacf04c2993a0029788a1370a483afa6", "parents": [ "e7f2f9918c0e97aa98ba147ca387e2c7238f0711" ], "author": { "name": "Mathieu Desnoyers", "email": "mathieu.desnoyers@polymtl.ca", "time": "Fri Jul 18 12:16:16 2008 -0400" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Oct 14 10:28:28 2008 +0200" }, "message": "tracing: Kernel Tracepoints\n\nImplementation of kernel tracepoints. Inspired from the Linux Kernel\nMarkers. Allows complete typing verification by declaring both tracing\nstatement inline functions and probe registration/unregistration static\ninline functions within the same macro \"DEFINE_TRACE\". No format string\nis required. See the tracepoint Documentation and Samples patches for\nusage examples.\n\nTaken from the documentation patch :\n\n\"A tracepoint placed in code provides a hook to call a function (probe)\nthat you can provide at runtime. A tracepoint can be \"on\" (a probe is\nconnected to it) or \"off\" (no probe is attached). When a tracepoint is\n\"off\" it has no effect, except for adding a tiny time penalty (checking\na condition for a branch) and space penalty (adding a few bytes for the\nfunction call at the end of the instrumented function and adds a data\nstructure in a separate section). When a tracepoint is \"on\", the\nfunction you provide is called each time the tracepoint is executed, in\nthe execution context of the caller. When the function provided ends its\nexecution, it returns to the caller (continuing from the tracepoint\nsite).\n\nYou can put tracepoints at important locations in the code. They are\nlightweight hooks that can pass an arbitrary number of parameters, which\nprototypes are described in a tracepoint declaration placed in a header\nfile.\"\n\nAddition and removal of tracepoints is synchronized by RCU using the\nscheduler (and preempt_disable) as guarantees to find a quiescent state\n(this is really RCU \"classic\"). The update side uses rcu_barrier_sched()\nwith call_rcu_sched() and the read/execute side uses\n\"preempt_disable()/preempt_enable()\".\n\nWe make sure the previous array containing probes, which has been\nscheduled for deletion by the rcu callback, is indeed freed before we\nproceed to the next update. It therefore limits the rate of modification\nof a single tracepoint to one update per RCU period. The objective here\nis to permit fast batch add/removal of probes on _different_\ntracepoints.\n\nChangelog :\n- Use #name \":\" #proto as string to identify the tracepoint in the\n tracepoint table. This will make sure not type mismatch happens due to\n connexion of a probe with the wrong type to a tracepoint declared with\n the same name in a different header.\n- Add tracepoint_entry_free_old.\n- Change __TO_TRACE to get rid of the \u0027i\u0027 iterator.\n\nMasami Hiramatsu \u003cmhiramat@redhat.com\u003e :\nTested on x86-64.\n\nPerformance impact of a tracepoint : same as markers, except that it\nadds about 70 bytes of instructions in an unlikely branch of each\ninstrumented function (the for loop, the stack setup and the function\ncall). It currently adds a memory read, a test and a conditional branch\nat the instrumentation site (in the hot path). Immediate values will\neventually change this into a load immediate, test and branch, which\nremoves the memory read which will make the i-cache impact smaller\n(changing the memory read for a load immediate removes 3-4 bytes per\nsite on x86_32 (depending on mov prefixes), or 7-8 bytes on x86_64, it\nalso saves the d-cache hit).\n\nAbout the performance impact of tracepoints (which is comparable to\nmarkers), even without immediate values optimizations, tests done by\nHideo Aoki on ia64 show no regression. His test case was using hackbench\non a kernel where scheduler instrumentation (about 5 events in code\nscheduler code) was added.\n\nQuoting Hideo Aoki about Markers :\n\nI evaluated overhead of kernel marker using linux-2.6-sched-fixes git\ntree, which includes several markers for LTTng, using an ia64 server.\n\nWhile the immediate trace mark feature isn\u0027t implemented on ia64, there\nis no major performance regression. So, I think that we don\u0027t have any\nissues to propose merging marker point patches into Linus\u0027s tree from\nthe viewpoint of performance impact.\n\nI prepared two kernels to evaluate. The first one was compiled without\nCONFIG_MARKERS. The second one was enabled CONFIG_MARKERS.\n\nI downloaded the original hackbench from the following URL:\nhttp://devresources.linux-foundation.org/craiger/hackbench/src/hackbench.c\n\nI ran hackbench 5 times in each condition and calculated the average and\ndifference between the kernels.\n\n The parameter of hackbench: every 50 from 50 to 800\n The number of CPUs of the server: 2, 4, and 8\n\nBelow is the results. As you can see, major performance regression\nwasn\u0027t found in any case. Even if number of processes increases,\ndifferences between marker-enabled kernel and marker- disabled kernel\ndoesn\u0027t increase. Moreover, if number of CPUs increases, the differences\ndoesn\u0027t increase either.\n\nCuriously, marker-enabled kernel is better than marker-disabled kernel\nin more than half cases, although I guess it comes from the difference\nof memory access pattern.\n\n* 2 CPUs\n\nNumber of | without | with | diff | diff |\nprocesses | Marker [Sec] | Marker [Sec] | [Sec] | [%] |\n--------------------------------------------------------------\n 50 | 4.811 | 4.872 | +0.061 | +1.27 |\n 100 | 9.854 | 10.309 | +0.454 | +4.61 |\n 150 | 15.602 | 15.040 | -0.562 | -3.6 |\n 200 | 20.489 | 20.380 | -0.109 | -0.53 |\n 250 | 25.798 | 25.652 | -0.146 | -0.56 |\n 300 | 31.260 | 30.797 | -0.463 | -1.48 |\n 350 | 36.121 | 35.770 | -0.351 | -0.97 |\n 400 | 42.288 | 42.102 | -0.186 | -0.44 |\n 450 | 47.778 | 47.253 | -0.526 | -1.1 |\n 500 | 51.953 | 52.278 | +0.325 | +0.63 |\n 550 | 58.401 | 57.700 | -0.701 | -1.2 |\n 600 | 63.334 | 63.222 | -0.112 | -0.18 |\n 650 | 68.816 | 68.511 | -0.306 | -0.44 |\n 700 | 74.667 | 74.088 | -0.579 | -0.78 |\n 750 | 78.612 | 79.582 | +0.970 | +1.23 |\n 800 | 85.431 | 85.263 | -0.168 | -0.2 |\n--------------------------------------------------------------\n\n* 4 CPUs\n\nNumber of | without | with | diff | diff |\nprocesses | Marker [Sec] | Marker [Sec] | [Sec] | [%] |\n--------------------------------------------------------------\n 50 | 2.586 | 2.584 | -0.003 | -0.1 |\n 100 | 5.254 | 5.283 | +0.030 | +0.56 |\n 150 | 8.012 | 8.074 | +0.061 | +0.76 |\n 200 | 11.172 | 11.000 | -0.172 | -1.54 |\n 250 | 13.917 | 14.036 | +0.119 | +0.86 |\n 300 | 16.905 | 16.543 | -0.362 | -2.14 |\n 350 | 19.901 | 20.036 | +0.135 | +0.68 |\n 400 | 22.908 | 23.094 | +0.186 | +0.81 |\n 450 | 26.273 | 26.101 | -0.172 | -0.66 |\n 500 | 29.554 | 29.092 | -0.461 | -1.56 |\n 550 | 32.377 | 32.274 | -0.103 | -0.32 |\n 600 | 35.855 | 35.322 | -0.533 | -1.49 |\n 650 | 39.192 | 38.388 | -0.804 | -2.05 |\n 700 | 41.744 | 41.719 | -0.025 | -0.06 |\n 750 | 45.016 | 44.496 | -0.520 | -1.16 |\n 800 | 48.212 | 47.603 | -0.609 | -1.26 |\n--------------------------------------------------------------\n\n* 8 CPUs\n\nNumber of | without | with | diff | diff |\nprocesses | Marker [Sec] | Marker [Sec] | [Sec] | [%] |\n--------------------------------------------------------------\n 50 | 2.094 | 2.072 | -0.022 | -1.07 |\n 100 | 4.162 | 4.273 | +0.111 | +2.66 |\n 150 | 6.485 | 6.540 | +0.055 | +0.84 |\n 200 | 8.556 | 8.478 | -0.078 | -0.91 |\n 250 | 10.458 | 10.258 | -0.200 | -1.91 |\n 300 | 12.425 | 12.750 | +0.325 | +2.62 |\n 350 | 14.807 | 14.839 | +0.032 | +0.22 |\n 400 | 16.801 | 16.959 | +0.158 | +0.94 |\n 450 | 19.478 | 19.009 | -0.470 | -2.41 |\n 500 | 21.296 | 21.504 | +0.208 | +0.98 |\n 550 | 23.842 | 23.979 | +0.137 | +0.57 |\n 600 | 26.309 | 26.111 | -0.198 | -0.75 |\n 650 | 28.705 | 28.446 | -0.259 | -0.9 |\n 700 | 31.233 | 31.394 | +0.161 | +0.52 |\n 750 | 34.064 | 33.720 | -0.344 | -1.01 |\n 800 | 36.320 | 36.114 | -0.206 | -0.57 |\n--------------------------------------------------------------\n\nSigned-off-by: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nAcked-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nAcked-by: \u0027Peter Zijlstra\u0027 \u003cpeterz@infradead.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "cb28a1bbdb4790378e7366d6c9ee1d2340b84f92", "tree": "316436f77dac75335fd2c3ef5f109e71606c50d3", "parents": [ "b6d4f7e3ef25beb8c658c97867d98883e69dc544", "f934fb19ef34730263e6afc01e8ec27a8a71470f" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jul 29 00:07:55 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jul 29 00:07:55 2008 +0200" }, "message": "Merge branch \u0027linus\u0027 into core/generic-dma-coherent\n\nConflicts:\n\n\tarch/x86/Kconfig\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "b03f6489f9f27dc519a4c60ebf39cc7b8a58eae7", "tree": "6329fc91e860f2949d737c611aa846eb2d653103", "parents": [ "696adfe84c11c571a1e0863460ff0ec142b4e5a9" ], "author": { "name": "Adrian Bunk", "email": "bunk@kernel.org", "time": "Fri Jul 25 01:45:35 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jul 25 10:53:27 2008 -0700" }, "message": "build kernel/profile.o only when requested\n\nBuild kernel/profile.o only if CONFIG_PROFILING is enabled.\n\nThis makes CONFIG_PROFILING\u003dn kernels smaller.\n\nAs a bonus, some profile_tick() calls and one branch from schedule() are\nnow eliminated with CONFIG_PROFILING\u003dn (but I doubt these are\nmeasurable effects).\n\nThis patch changes the effects of CONFIG_PROFILING\u003dn, but I don\u0027t think\nhaving more than two choices would be the better choice.\n\nThis patch also adds the name of the first parameter to the prototypes\nof profile_{hits,tick}() since I anyway had to add them for the dummy\nfunctions.\n\nSigned-off-by: Adrian Bunk \u003cbunk@kernel.org\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f6dc8ccaab6d8f63cbae1e6c73fe972b26f5376c", "tree": "c5643fcdc884a8d0bfc3f1bc28039cab7394e5bc", "parents": [ "323ec001c6bb98eeabb5abbdbb8c8055d9496554", "5b664cb235e97afbf34db9c4d77f08ebd725335e" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jul 18 21:13:20 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jul 18 21:13:20 2008 +0200" }, "message": "Merge branch \u0027linus\u0027 into core/generic-dma-coherent\n\nConflicts:\n\n\tkernel/Makefile\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "d88c16919793a9f5dc93e7956da5bb089c7600b4", "tree": "783fb96fd4912f11f97f7dea659828e773408d74", "parents": [ "5b664cb235e97afbf34db9c4d77f08ebd725335e" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jul 18 08:59:24 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jul 18 08:59:24 2008 +0200" }, "message": "Revert parts of \"ftrace: do not trace scheduler functions\"\n\nthe removal of -mno-spe in the !ftrace case was not intended.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "c349e0a01c3e0f70913db6a5bb61ab204e0602de", "tree": "08cd666a96fe9a078fd51c2449376df04f311b73", "parents": [ "9fa111372a54f695f65e0de2f2a2108fe6cf3584" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Apr 15 22:39:31 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Jul 17 17:40:11 2008 +0200" }, "message": "ftrace: do not trace scheduler functions\n\ndo not trace scheduler functions - it\u0027s still a bit fragile\nand can lock up with:\n\n http://redhat.com/~mingo/misc/config-Thu_Jul_17_13_34_52_CEST_2008\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "1a781a777b2f6ac46523fe92396215762ced624d", "tree": "4f34bb4aade85c0eb364b53d664ec7f6ab959006", "parents": [ "b9d2252c1e44fa83a4e65fdc9eb93db6297c55af", "42a2f217a5e324ed5f2373ab1b7a0a15187c4d6c" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jul 15 21:55:59 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jul 15 21:55:59 2008 +0200" }, "message": "Merge branch \u0027generic-ipi\u0027 into generic-ipi-for-linus\n\nConflicts:\n\n\tarch/powerpc/Kconfig\n\tarch/s390/kernel/time.c\n\tarch/x86/kernel/apic_32.c\n\tarch/x86/kernel/cpu/perfctr-watchdog.c\n\tarch/x86/kernel/i8259_64.c\n\tarch/x86/kernel/ldt.c\n\tarch/x86/kernel/nmi_64.c\n\tarch/x86/kernel/smpboot.c\n\tarch/x86/xen/smp.c\n\tinclude/asm-x86/hw_irq_32.h\n\tinclude/asm-x86/hw_irq_64.h\n\tinclude/asm-x86/mach-default/irq_vectors.h\n\tinclude/asm-x86/mach-voyager/irq_vectors.h\n\tinclude/asm-x86/smp.h\n\tkernel/Makefile\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "5806b81ac1c0c52665b91723fd4146a4f86e386b", "tree": "24ea8763bf308ce1407c1de91dc8de4d2655e1c1", "parents": [ "d14c8a680ccfdeb5e7b9be4d61162c2b373bd1e8", "6712e299b7dc78aa4971b85e803435ee6d49a9dd" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 14 16:11:52 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 14 16:11:52 2008 +0200" }, "message": "Merge branch \u0027auto-ftrace-next\u0027 into tracing/for-linus\n\nConflicts:\n\n\tarch/x86/kernel/entry_32.S\n\tarch/x86/kernel/process_32.c\n\tarch/x86/kernel/process_64.c\n\tarch/x86/lib/Makefile\n\tinclude/asm-x86/irqflags.h\n\tkernel/Makefile\n\tkernel/sched.c\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" } ], "next": "1e16c0a081f6c93f04c6af784d6a160955269f91" }