)]}'
{
  "log": [
    {
      "commit": "40bcea7bbe8fe452a2d272e2ffd3dea281eec9ff",
      "tree": "aedb6d02e53e3cf84cc32fd81db84032cee205e1",
      "parents": [
        "492f73a303b488ffd67097b2351d54aa6e6c7c73",
        "14a8fd7ceea6915c613746203d6e9a2bf273f16c"
      ],
      "author": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Thu Jul 21 09:32:40 2011 +0200"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Thu Jul 21 09:32:40 2011 +0200"
      },
      "message": "Merge branch \u0027tip/perf/core\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/core\n"
    },
    {
      "commit": "492f73a303b488ffd67097b2351d54aa6e6c7c73",
      "tree": "6e6c16fbd628bb5eb577cfc70a488ca286563e58",
      "parents": [
        "e08fbb78f03fe2c4f88824faf6f51ce6af185e11",
        "f7bc8b61f65726ff98f52e286b28e294499d7a08"
      ],
      "author": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Thu Jul 21 09:29:14 2011 +0200"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Thu Jul 21 09:29:21 2011 +0200"
      },
      "message": "Merge branch \u0027perf/urgent\u0027 into perf/core\n\nMerge reason: pick up the latest fixes - they won\u0027t make v3.0.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "7f6878a3d707b947603e09d95df0c3a98987e3a4",
      "tree": "aa707653884ae1a7eac99c1b3c772c2eb89eb642",
      "parents": [
        "614243181050436785f5a621749a7da2336a7916"
      ],
      "author": {
        "name": "Masami Hiramatsu",
        "email": "masami.hiramatsu.pt@hitachi.com",
        "time": "Mon Jun 27 16:27:03 2011 +0900"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Fri Jul 15 15:45:32 2011 -0400"
      },
      "message": "tracing/kprobe: Update symbol reference when loading module\n\nSince the address of a module-local variable can only be\nsolved after the target module is loaded, the symbol\nfetch-argument should be updated when loading target\nmodule.\n\nSigned-off-by: Masami Hiramatsu \u003cmasami.hiramatsu.pt@hitachi.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nLink: http://lkml.kernel.org/r/20110627072703.6528.75042.stgit@fedora15\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "614243181050436785f5a621749a7da2336a7916",
      "tree": "d64445cc0bc14420b993e82bd4bb4723ea8e34fa",
      "parents": [
        "bc81d48d13d8839fae6833c95794c403b2133f36"
      ],
      "author": {
        "name": "Masami Hiramatsu",
        "email": "masami.hiramatsu.pt@hitachi.com",
        "time": "Mon Jun 27 16:26:56 2011 +0900"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Fri Jul 15 15:17:14 2011 -0400"
      },
      "message": "tracing/kprobes: Support module init function probing\n\nTo support probing module init functions, kprobe-tracer allows\nuser to define a probe on non-existed function when it is given\nwith a module name. This also enables user to set a probe on\na function on a specific module, even if a same name (but different)\nfunction is locally defined in another module.\n\nThe module name must be in the front of function name and separated\nby a \u0027:\u0027. e.g. btrfs:btrfs_init_sysfs\n\nSigned-off-by: Masami Hiramatsu \u003cmasami.hiramatsu.pt@hitachi.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nLink: http://lkml.kernel.org/r/20110627072656.6528.89970.stgit@fedora15\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "bc81d48d13d8839fae6833c95794c403b2133f36",
      "tree": "ebb87fb7664549eba344489e80cef1b64555bba0",
      "parents": [
        "1538f888f1e793de04e0f90372352ac1b05833cf"
      ],
      "author": {
        "name": "Masami Hiramatsu",
        "email": "masami.hiramatsu.pt@hitachi.com",
        "time": "Mon Jun 27 16:26:50 2011 +0900"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Fri Jul 15 15:11:47 2011 -0400"
      },
      "message": "kprobes: Return -ENOENT if probe point doesn\u0027t exist\n\nReturn -ENOENT if probe point doesn\u0027t exist, but still returns\n-EINVAL if both of kprobe-\u003eaddr and kprobe-\u003esymbol_name are\nspecified or both are not specified.\n\nAcked-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nSigned-off-by: Masami Hiramatsu \u003cmasami.hiramatsu.pt@hitachi.com\u003e\nCc: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Anil S Keshavamurthy \u003canil.s.keshavamurthy@intel.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nLink: http://lkml.kernel.org/r/20110627072650.6528.67329.stgit@fedora15\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "1538f888f1e793de04e0f90372352ac1b05833cf",
      "tree": "42c064993df39faf3f285e276f588fc2518016f2",
      "parents": [
        "7143f168e2aa4bc7f8a8bcfe46d8dc52f7be869a"
      ],
      "author": {
        "name": "Masami Hiramatsu",
        "email": "masami.hiramatsu.pt@hitachi.com",
        "time": "Mon Jun 27 16:26:44 2011 +0900"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Fri Jul 15 15:10:58 2011 -0400"
      },
      "message": "tracing/kprobes: Merge trace probe enable/disable functions\n\nMerge redundant enable/disable functions into enable_trace_probe()\nand disable_trace_probe().\n\nSigned-off-by: Masami Hiramatsu \u003cmasami.hiramatsu.pt@hitachi.com\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: yrl.pp-manager.tt@hitachi.com\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nLink: http://lkml.kernel.org/r/20110627072644.6528.26910.stgit@fedora15\n\n[ converted kprobe selftest to use  enable_trace_probe ]\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "f7bc8b61f65726ff98f52e286b28e294499d7a08",
      "tree": "88ef0c943d27aa9f69824d87faa990731cc2ebfe",
      "parents": [
        "04da85b86188f224cc9b391b5bdd92a3ba20ffcf"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Thu Jul 14 23:02:27 2011 -0400"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Thu Jul 14 23:02:27 2011 -0400"
      },
      "message": "ftrace: Fix regression where ftrace breaks when modules are loaded\n\nEnabling function tracer to trace all functions, then load a module and\nthen disable function tracing will cause ftrace to fail.\n\nThis can also happen by enabling function tracing on the command line:\n\n  ftrace\u003dfunction\n\nand during boot up, modules are loaded, then you disable function tracing\nwith \u0027echo nop \u003e current_tracer\u0027 you will trigger a bug in ftrace that\nwill shut itself down.\n\nThe reason is, the new ftrace code keeps ref counts of all ftrace_ops that\nare registered for tracing. When one or more ftrace_ops are registered,\nall the records that represent the functions that the ftrace_ops will\ntrace have a ref count incremented. If this ref count is not zero,\nwhen the code modification runs, that function will be enabled for tracing.\nIf the ref count is zero, that function will be disabled from tracing.\n\nTo make sure the accounting was working, FTRACE_WARN_ON()s were added\nto updating of the ref counts.\n\nIf the ref count hits its max (\u003e 2^30 ftrace_ops added), or if\nthe ref count goes below zero, a FTRACE_WARN_ON() is triggered which\ndisables all modification of code.\n\nSince it is common for ftrace_ops to trace all functions in the kernel,\ninstead of creating \u003e 20,000 hash items for the ftrace_ops, the hash\ncount is just set to zero, and it represents that the ftrace_ops is\nto trace all functions. This is where the issues arrise.\n\nIf you enable function tracing to trace all functions, and then add\na module, the modules function records do not get the ref count updated.\nWhen the function tracer is disabled, all function records ref counts\nare subtracted. Since the modules never had their ref counts incremented,\nthey go below zero and the FTRACE_WARN_ON() is triggered.\n\nThe solution to this is rather simple. When modules are loaded, and\ntheir functions are added to the the ftrace pool, look to see if any\nftrace_ops are registered that trace all functions. And for those,\nupdate the ref count for the module function records.\n\nReported-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "7143f168e2aa4bc7f8a8bcfe46d8dc52f7be869a",
      "tree": "cd13a0d2524b9ef4c6f807d01912147539c924b8",
      "parents": [
        "f91298709790b9a483752ca3c967845537df2af3"
      ],
      "author": {
        "name": "Masami Hiramatsu",
        "email": "masami.hiramatsu.pt@hitachi.com",
        "time": "Mon Jun 27 16:26:36 2011 +0900"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Thu Jul 14 17:44:43 2011 -0400"
      },
      "message": "tracing/kprobes: Rename probe_* to trace_probe_*\n\nRename probe_* to trace_probe_* for avoiding namespace\nconfliction. This also fixes improper names of find_probe_event()\nand cleanup_all_probes() to find_trace_probe() and\nrelease_all_trace_probes() respectively.\n\nSigned-off-by: Masami Hiramatsu \u003cmasami.hiramatsu.pt@hitachi.com\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLink: http://lkml.kernel.org/r/20110627072636.6528.60374.stgit@fedora15\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "f91298709790b9a483752ca3c967845537df2af3",
      "tree": "f7392e3d37b9aa78ef04bdf89bc0d45d2db401e3",
      "parents": [
        "4a9bd3f134decd6d16ead8d288342d57aad486be"
      ],
      "author": {
        "name": "Cyrill Gorcunov",
        "email": "gorcunov@openvz.org",
        "time": "Sat Jul 09 00:17:12 2011 +0400"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Thu Jul 14 17:25:04 2011 -0400"
      },
      "message": "perf, x86: P4 PMU - Introduce event alias feature\n\nInstead of hw_nmi_watchdog_set_attr() weak function\nand appropriate x86_pmu::hw_watchdog_set_attr() call\nwe introduce even alias mechanism which allow us\nto drop this routines completely and isolate quirks\nof Netburst architecture inside P4 PMU code only.\n\nThe main idea remains the same though -- to allow\nnmi-watchdog and perf top run simultaneously.\n\nNote the aliasing mechanism applies to generic\nPERF_COUNT_HW_CPU_CYCLES event only because arbitrary\nevent (say passed as RAW initially) might have some\nadditional bits set inside ESCR register changing\nthe behaviour of event and we can\u0027t guarantee anymore\nthat alias event will give the same result.\n\nP.S. Thanks a huge to Don and Steven for for testing\n     and early review.\n\nAcked-by: Don Zickus \u003cdzickus@redhat.com\u003e\nTested-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nSigned-off-by: Cyrill Gorcunov \u003cgorcunov@openvz.org\u003e\nCC: Ingo Molnar \u003cmingo@elte.hu\u003e\nCC: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCC: Stephane Eranian \u003ceranian@google.com\u003e\nCC: Lin Ming \u003cming.m.lin@intel.com\u003e\nCC: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCC: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLink: http://lkml.kernel.org/r/20110708201712.GS23657@sun\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "4a9bd3f134decd6d16ead8d288342d57aad486be",
      "tree": "ca9eca5fcbe93dc8a433d839221505ad8fba5296",
      "parents": [
        "259032bfe379281bf7cba512b7705bdb4ce41db5"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Thu Jul 14 16:36:53 2011 -0400"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Thu Jul 14 16:36:53 2011 -0400"
      },
      "message": "tracing: Have dynamic size event stack traces\n\nCurrently the stack trace per event in ftace is only 8 frames.\nThis can be quite limiting and sometimes useless. Especially when\nthe \"ignore frames\" is wrong and we also use up stack frames for\nthe event processing itself.\n\nChange this to be dynamic by adding a percpu buffer that we can\nwrite a large stack frame into and then copy into the ring buffer.\n\nFor interrupts and NMIs that come in while another event is being\nprocess, will only get to use the 8 frame stack. That should be enough\nas the task that it interrupted will have the full stack frame anyway.\n\nRequested-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "6331c28c962561aee59e5a493b7556a4bb585957",
      "tree": "33292a3127aa831ee8ec2394e790bc2a8817beee",
      "parents": [
        "072126f4529196f71a97960248bca54fd4554c2d"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Wed Jul 13 15:11:02 2011 -0400"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Wed Jul 13 22:25:09 2011 -0400"
      },
      "message": "ftrace: Fix dynamic selftest failure on some archs\n\nArchs that do not implement CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST, will\nfail the dynamic ftrace selftest.\n\nThe function tracer has a quick \u0027off\u0027 variable that will prevent\nthe call back functions from being called. This variable is called\nfunction_trace_stop. In x86, this is implemented directly in the mcount\nassembly, but for other archs, an intermediate function is used called\nftrace_test_stop_func().\n\nIn dynamic ftrace, the function pointer variable ftrace_trace_function is\nused to update the caller code in the mcount caller. But for archs that\ndo not have CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST set, it only calls\nftrace_test_stop_func() instead, which in turn calls __ftrace_trace_function.\n\nWhen more than one ftrace_ops is registered, the function it calls is\nftrace_ops_list_func(), which will iterate over all registered ftrace_ops\nand call the callbacks that have their hash matching.\n\nThe issue happens when two ftrace_ops are registered for different functions\nand one is then unregistered. The __ftrace_trace_function is then pointed\nto the remaining ftrace_ops callback function directly. This mean it will\nbe called for all functions that were registered to trace by both ftrace_ops\nthat were registered.\n\nThis is not an issue for archs with CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST,\nbecause the update of ftrace_trace_function doesn\u0027t happen until after all\nfunctions have been updated, and then the mcount caller is updated. But\nfor those archs that do use the ftrace_test_stop_func(), the update is\nimmediate.\n\nThe dynamic selftest fails because it hits this situation, and the\nftrace_ops that it registers fails to only trace what it was suppose to\nand instead traces all other functions.\n\nThe solution is to delay the setting of __ftrace_trace_function until\nafter all the functions have been updated according to the registered\nftrace_ops. Also, function_trace_stop is set during the update to prevent\nfunction tracing from calling code that is caused by the function tracer\nitself.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "072126f4529196f71a97960248bca54fd4554c2d",
      "tree": "cb1275288f49b59e4643abb85855ad6889aba94f",
      "parents": [
        "41fb61c2d08107ce96a5dcb3a6289b2afd3e135c"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Wed Jul 13 15:08:31 2011 -0400"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Wed Jul 13 22:10:05 2011 -0400"
      },
      "message": "ftrace: Update filter when tracing enabled in set_ftrace_filter()\n\nCurrently, if set_ftrace_filter() is called when the ftrace_ops is\nactive, the function filters will not be updated. They will only be updated\nwhen tracing is disabled and re-enabled.\n\nUpdate the functions immediately during set_ftrace_filter().\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "41fb61c2d08107ce96a5dcb3a6289b2afd3e135c",
      "tree": "ca3ae1796ca1d3f01f2bb62eba1fbc93db1affae",
      "parents": [
        "4376cac66778b25e599be3f5d54f33f58ba8ead7"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Wed Jul 13 15:03:44 2011 -0400"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Wed Jul 13 22:00:50 2011 -0400"
      },
      "message": "ftrace: Balance records when updating the hash\n\nWhenever the hash of the ftrace_ops is updated, the record counts\nmust be balance. This requires disabling the records that are set\nin the original hash, and then enabling the records that are set\nin the updated hash.\n\nMoving the update into ftrace_hash_move() removes the bug where the\nhash was updated but the records were not, which results in ftrace\ntriggering a warning and disabling itself because the ftrace_ops filter\nis updated while the ftrace_ops was registered, and then the failure\nhappens when the ftrace_ops is unregistered.\n\nThe current code will not trigger this bug, but new code will.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "4376cac66778b25e599be3f5d54f33f58ba8ead7",
      "tree": "9cf05820586f140bafcde67cd2cd80a4391ef7eb",
      "parents": [
        "e4a3f541f0b67fdad98b326c851dfe7f4b6b6dad"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Fri Jun 24 23:28:13 2011 -0400"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Thu Jul 07 22:39:38 2011 -0400"
      },
      "message": "ftrace: Do not disable interrupts for modules in mcount update\n\nWhen I mounted an NFS directory, it caused several modules to be loaded. At the\ntime I was running the preemptirqsoff tracer, and it showed the following\noutput:\n\n# tracer: preemptirqsoff\n#\n# preemptirqsoff latency trace v1.1.5 on 2.6.33.9-rt30-mrg-test\n# --------------------------------------------------------------------\n# latency: 1177 us, #4/4, CPU#3 | (M:preempt VP:0, KP:0, SP:0 HP:0 #P:4)\n#    -----------------\n#    | task: modprobe-19370 (uid:0 nice:0 policy:0 rt_prio:0)\n#    -----------------\n#  \u003d\u003e started at: ftrace_module_notify\n#  \u003d\u003e ended at:   ftrace_module_notify\n#\n#\n#                  _------\u003d\u003e CPU#\n#                 / _-----\u003d\u003e irqs-off\n#                | / _----\u003d\u003e need-resched\n#                || / _---\u003d\u003e hardirq/softirq\n#                ||| / _--\u003d\u003e preempt-depth\n#                |||| /_--\u003d\u003e lock-depth\n#                |||||/     delay\n#  cmd     pid   |||||| time  |   caller\n#     \\   /      ||||||   \\   |   /\nmodprobe-19370   3d....    0us!: ftrace_process_locs \u003c-ftrace_module_notify\nmodprobe-19370   3d.... 1176us : ftrace_process_locs \u003c-ftrace_module_notify\nmodprobe-19370   3d.... 1178us : trace_hardirqs_on \u003c-ftrace_module_notify\nmodprobe-19370   3d.... 1178us : \u003cstack trace\u003e\n \u003d\u003e ftrace_process_locs\n \u003d\u003e ftrace_module_notify\n \u003d\u003e notifier_call_chain\n \u003d\u003e __blocking_notifier_call_chain\n \u003d\u003e blocking_notifier_call_chain\n \u003d\u003e sys_init_module\n \u003d\u003e system_call_fastpath\n\nThat\u0027s over 1ms that interrupts are disabled on a Real-Time kernel!\n\nLooking at the cause (being the ftrace author helped), I found that the\ninterrupts are disabled before the code modification of mcounts into nops. The\ninterrupts only need to be disabled on start up around this code, not when\nmodules are being loaded.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "e4a3f541f0b67fdad98b326c851dfe7f4b6b6dad",
      "tree": "e93b858ab3313374d23c4ebadc5077816f1894f2",
      "parents": [
        "e08fbb78f03fe2c4f88824faf6f51ce6af185e11"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Tue Jun 14 19:02:29 2011 -0400"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Thu Jul 07 22:26:27 2011 -0400"
      },
      "message": "tracing: Still trace filtered irq functions when irq trace is disabled\n\nIf a function is set to be traced by the set_graph_function, but the\noption funcgraph-irqs is zero, and the traced function happens to be\ncalled from a interrupt, it will not be traced.\n\nThe point of funcgraph-irqs is to not trace interrupts when we are\npreempted by an irq, not to not trace functions we want to trace that\nhappen to be *in* a irq.\n\nLuckily the current-\u003etrace_recursion element is perfect to add a flag\nto help us be able to trace functions within an interrupt even when\nwe are not tracing interrupts that preempt the trace.\n\nReported-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nTested-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "43dd61c9a09bd413e837df829e6bfb42159be52a",
      "tree": "613b8ceaf798c87a4fac4ff66dc2ac0e13c3e46b",
      "parents": [
        "40ee4dffff061399eb9358e0c8fcfbaf8de4c8fe"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Thu Jul 07 11:09:22 2011 -0400"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Thu Jul 07 11:30:08 2011 -0400"
      },
      "message": "ftrace: Fix regression of :mod:module function enabling\n\nThe new code that allows different utilities to pick and choose\nwhat functions they trace broke the :mod: hook that allows users\nto trace only functions of a particular module.\n\nThe reason is that the :mod: hook bypasses the hash that is setup\nto allow individual users to trace their own functions and uses\nthe global hash directly. But if the global hash has not been\nset up, it will cause a bug:\n\necho \u0027*:mod:radeon\u0027 \u003e /sys/kernel/debug/set_ftrace_filter\n\nproduces:\n\n [drm:drm_mode_getfb] *ERROR* invalid framebuffer id\n [drm:radeon_crtc_page_flip] *ERROR* failed to reserve new rbo buffer before flip\n BUG: unable to handle kernel paging request at ffffffff8160ec90\n IP: [\u003cffffffff810d9136\u003e] add_hash_entry+0x66/0xd0\n PGD 1a05067 PUD 1a09063 PMD 80000000016001e1\n Oops: 0003 [#1] SMP Jul  7 04:02:28 phyllis kernel: [55303.858604] CPU 1\n Modules linked in: cryptd aes_x86_64 aes_generic binfmt_misc rfcomm bnep ip6table_filter hid radeon r8169 ahci libahci mii ttm drm_kms_helper drm video i2c_algo_bit intel_agp intel_gtt\n\n Pid: 10344, comm: bash Tainted: G        WC  3.0.0-rc5 #1 Dell Inc. Inspiron N5010/0YXXJJ\n RIP: 0010:[\u003cffffffff810d9136\u003e]  [\u003cffffffff810d9136\u003e] add_hash_entry+0x66/0xd0\n RSP: 0018:ffff88003a96bda8  EFLAGS: 00010246\n RAX: ffff8801301735c0 RBX: ffffffff8160ec80 RCX: 0000000000306ee0\n RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff880137c92940\n RBP: ffff88003a96bdb8 R08: ffff880137c95680 R09: 0000000000000000\n R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff81c9df78\n R13: ffff8801153d1000 R14: 0000000000000000 R15: 0000000000000000\n FS: 00007f329c18a700(0000) GS:ffff880137c80000(0000) knlGS:0000000000000000\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: ffffffff8160ec90 CR3: 000000003002b000 CR4: 00000000000006e0\n DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400\n Process bash (pid: 10344, threadinfo ffff88003a96a000, task ffff88012fcfc470)\n Stack:\n  0000000000000fd0 00000000000000fc ffff88003a96be38 ffffffff810d92f5\n  ffff88011c4c4e00 ffff880000000000 000000000b69f4d0 ffffffff8160ec80\n  ffff8800300e6f06 0000000081130295 0000000000000282 ffff8800300e6f00\n Call Trace:\n  [\u003cffffffff810d92f5\u003e] match_records+0x155/0x1b0\n  [\u003cffffffff810d940c\u003e] ftrace_mod_callback+0xbc/0x100\n  [\u003cffffffff810dafdf\u003e] ftrace_regex_write+0x16f/0x210\n  [\u003cffffffff810db09f\u003e] ftrace_filter_write+0xf/0x20\n  [\u003cffffffff81166e48\u003e] vfs_write+0xc8/0x190\n  [\u003cffffffff81167001\u003e] sys_write+0x51/0x90\n  [\u003cffffffff815c7e02\u003e] system_call_fastpath+0x16/0x1b\n Code: 48 8b 33 31 d2 48 85 f6 75 33 49 89 d4 4c 03 63 08 49 8b 14 24 48 85 d2 48 89 10 74 04 48 89 42 08 49 89 04 24 4c 89 60 08 31 d2\n RIP [\u003cffffffff810d9136\u003e] add_hash_entry+0x66/0xd0\n  RSP \u003cffff88003a96bda8\u003e\n CR2: ffffffff8160ec90\n ---[ end trace a5d031828efdd88e ]---\n\nReported-by: Brian Marete \u003cmarete@toshnix.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "40ee4dffff061399eb9358e0c8fcfbaf8de4c8fe",
      "tree": "88b61ccc46994332d6f59cc1e6b2848fffc9a990",
      "parents": [
        "e9dbfae53eeb9fc3d4bb7da3df87fa9875f5da02"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Tue Jul 05 14:32:51 2011 -0400"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Thu Jul 07 11:22:29 2011 -0400"
      },
      "message": "tracing: Have \"enable\" file use refcounts like the \"filter\" file\n\nThe \"enable\" file for the event system can be removed when a module\nis unloaded and the event system only has events from that module.\nAs the event system nr_events count goes to zero, it may be freed\nif its ref_count is also set to zero.\n\nLike the \"filter\" file, the \"enable\" file may be opened by a task and\nreferenced later, after a module has been unloaded and the events for\nthat event system have been removed.\n\nAlthough the \"filter\" file referenced the event system structure,\nthe \"enable\" file only references a pointer to the event system\nname. Since the name is freed when the event system is removed,\nit is possible that an access to the \"enable\" file may reference\na freed pointer.\n\nUpdate the \"enable\" file to use the subsystem_open() routine that\nthe \"filter\" file uses, to keep a reference to the event system\nstructure while the \"enable\" file is opened.\n\nCc: \u003cstable@kernel.org\u003e\nReported-by: Johannes Berg \u003cjohannes.berg@intel.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "e9dbfae53eeb9fc3d4bb7da3df87fa9875f5da02",
      "tree": "2a389b9c6a5fe08d4fb3a9ca96e753244963e1d9",
      "parents": [
        "140fe3b1ab9c082182ef13359fab4ddba95c24c3"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Tue Jul 05 11:36:06 2011 -0400"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Thu Jul 07 11:19:18 2011 -0400"
      },
      "message": "tracing: Fix bug when reading system filters on module removal\n\nThe event system is freed when its nr_events is set to zero. This happens\nwhen a module created an event system and then later the module is\nremoved. Modules may share systems, so the system is allocated when\nit is created and freed when the modules are unloaded and all the\nevents under the system are removed (nr_events set to zero).\n\nThe problem arises when a task opened the \"filter\" file for the\nsystem. If the module is unloaded and it removed the last event for\nthat system, the system structure is freed. If the task that opened\nthe filter file accesses the \"filter\" file after the system has\nbeen freed, the system will access an invalid pointer.\n\nBy adding a ref_count, and using it to keep track of what\nis using the event system, we can free it after all users\nare finished with the event system.\n\nCc: \u003cstable@kernel.org\u003e\nReported-by: Johannes Berg \u003cjohannes.berg@intel.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "931da6137e8e8c622f59251e8b645467aea293f1",
      "tree": "2169cbd29d5d9a4cbc7104b2a744a95ba746c50d",
      "parents": [
        "5d67be97f8903d05ce53597fb5f3bc25a45e8026",
        "1fd8df2c3970c9e7e4e262354154ee39e58bdd7c"
      ],
      "author": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Tue Jul 05 11:55:43 2011 +0200"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Tue Jul 05 11:55:43 2011 +0200"
      },
      "message": "Merge branch \u0027tip/perf/core-2\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/core\n"
    },
    {
      "commit": "26ca5c11fb45ae2b2ac7e3574b8db6b3a3c7d350",
      "tree": "01f430828eaacf7ba3e0eb541f8d946f3d855696",
      "parents": [
        "0af3ac1fdb9d5c297b4b07c9e0172531d42b6716"
      ],
      "author": {
        "name": "Avi Kivity",
        "email": "avi@redhat.com",
        "time": "Wed Jun 29 18:42:37 2011 +0300"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Fri Jul 01 11:06:40 2011 +0200"
      },
      "message": "perf: export perf_event_refresh() to modules\n\nKVM needs one-shot samples, since a PMC programmed to -X will fire after X\nevents and then again after 2^40 events (i.e. variable period).\n\nSigned-off-by: Avi Kivity \u003cavi@redhat.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/r/1309362157-6596-4-git-send-email-avi@redhat.com\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "4dc0da86967d5463708631d02a70cfed5b104884",
      "tree": "e09071a62f2457b710ff69df3be1bff39340a4c6",
      "parents": [
        "89d6c0b5bdbb1927775584dcf532d98b3efe1477"
      ],
      "author": {
        "name": "Avi Kivity",
        "email": "avi@redhat.com",
        "time": "Wed Jun 29 18:42:35 2011 +0300"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Fri Jul 01 11:06:38 2011 +0200"
      },
      "message": "perf: Add context field to perf_event\n\nThe perf_event overflow handler does not receive any caller-derived\nargument, so many callers need to resort to looking up the perf_event\nin their local data structure.  This is ugly and doesn\u0027t scale if a\nsingle callback services many perf_events.\n\nFix by adding a context parameter to perf_event_create_kernel_counter()\n(and derived hardware breakpoints APIs) and storing it in the perf_event.\nThe field can be accessed from the callback as event-\u003eoverflow_handler_context.\nAll callers are updated.\n\nSigned-off-by: Avi Kivity \u003cavi@redhat.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/r/1309362157-6596-2-git-send-email-avi@redhat.com\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "a7ac67ea021b4603095d2aa458bc41641238f22c",
      "tree": "e79d13a1096e751061af285265b1862d7e6dca70",
      "parents": [
        "a8b0ca17b80e92faab46ee7179ba9e99ccb61233"
      ],
      "author": {
        "name": "Peter Zijlstra",
        "email": "a.p.zijlstra@chello.nl",
        "time": "Mon Jun 27 16:47:16 2011 +0200"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Fri Jul 01 11:06:35 2011 +0200"
      },
      "message": "perf: Remove the perf_output_begin(.sample) argument\n\nSince only samples call perf_output_sample() its much saner (and more\ncorrect) to put the sample logic in there than in the\nperf_output_begin()/perf_output_end() pair.\n\nSaves a useless argument, reduces conditionals and shrinks\nstruct perf_output_handle, win!\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/n/tip-2crpvsx3cqu67q3zqjbnlpsc@git.kernel.org\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "a8b0ca17b80e92faab46ee7179ba9e99ccb61233",
      "tree": "a4a6282139f26458f80dcbe21c709a9290e84143",
      "parents": [
        "1880c4ae182afb5650c5678949ecfe7ff66a724e"
      ],
      "author": {
        "name": "Peter Zijlstra",
        "email": "a.p.zijlstra@chello.nl",
        "time": "Mon Jun 27 14:41:57 2011 +0200"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Fri Jul 01 11:06:35 2011 +0200"
      },
      "message": "perf: Remove the nmi parameter from the swevent and overflow interface\n\nThe nmi parameter indicated if we could do wakeups from the current\ncontext, if not, we would set some state and self-IPI and let the\nresulting interrupt do the wakeup.\n\nFor the various event classes:\n\n  - hardware: nmi\u003d0; PMI is in fact an NMI or we run irq_work_run from\n    the PMI-tail (ARM etc.)\n  - tracepoint: nmi\u003d0; since tracepoint could be from NMI context.\n  - software: nmi\u003d[0,1]; some, like the schedule thing cannot\n    perform wakeups, and hence need 0.\n\nAs one can see, there is very little nmi\u003d1 usage, and the down-side of\nnot using it is that on some platforms some software events can have a\njiffy delay in wakeup (when arch_irq_work_raise isn\u0027t implemented).\n\nThe up-side however is that we can remove the nmi parameter and save a\nbunch of conditionals in fast paths.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Michael Cree \u003cmcree@orcon.net.nz\u003e\nCc: Will Deacon \u003cwill.deacon@arm.com\u003e\nCc: Deng-Cheng Zhu \u003cdengcheng.zhu@gmail.com\u003e\nCc: Anton Blanchard \u003canton@samba.org\u003e\nCc: Eric B Munson \u003cemunson@mgebm.net\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: David S. Miller \u003cdavem@davemloft.net\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Jason Wessel \u003cjason.wessel@windriver.com\u003e\nCc: Don Zickus \u003cdzickus@redhat.com\u003e\nLink: http://lkml.kernel.org/n/tip-agjev8eu666tvknpb3iaj0fg@git.kernel.org\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "1880c4ae182afb5650c5678949ecfe7ff66a724e",
      "tree": "57306c05aca1e2a2ce5d07e8c29ad76b6b403879",
      "parents": [
        "0d6412085b7ff58612af52e51ffa864f0df4b8fd"
      ],
      "author": {
        "name": "Cyrill Gorcunov",
        "email": "gorcunov@gmail.com",
        "time": "Thu Jun 23 16:49:18 2011 +0400"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Fri Jul 01 11:06:34 2011 +0200"
      },
      "message": "perf, x86: Add hw_watchdog_set_attr() in a sake of nmi-watchdog on P4\n\nDue to restriction and specifics of Netburst PMU we need a separated\nevent for NMI watchdog. In particular every Netburst event\nconsumes not just a counter and a config register, but also an\nadditional ESCR register.\n\nSince ESCR registers are grouped upon counters (i.e. if ESCR is occupied\nfor some event there is no room for another event to enter until its\nreleased) we need to pick up the \"least\" used ESCR (or the most available\none) for nmi-watchdog purposes -- so MSR_P4_CRU_ESCR2/3 was chosen.\n\nWith this patch nmi-watchdog and perf top should be able to run simultaneously.\n\nSigned-off-by: Cyrill Gorcunov \u003cgorcunov@openvz.org\u003e\nCC: Lin Ming \u003cming.m.lin@intel.com\u003e\nCC: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCC: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nTested-and-reviewed-by: Don Zickus \u003cdzickus@redhat.com\u003e\nTested-and-reviewed-by: Stephane Eranian \u003ceranian@google.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/r/20110623124918.GC13050@sun\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "0d6412085b7ff58612af52e51ffa864f0df4b8fd",
      "tree": "b0aa2622aa0262b1238b07fad38d76c9c61d6e32",
      "parents": [
        "c4794295917ebeda8013b6cb9c8d71ab4f74a1fa"
      ],
      "author": {
        "name": "Eric B Munson",
        "email": "emunson@mgebm.net",
        "time": "Fri Jun 24 12:26:26 2011 -0400"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Fri Jul 01 11:06:34 2011 +0200"
      },
      "message": "events: Ensure that timers are updated without requiring read() call\n\nThe event tracing infrastructure exposes two timers which should be updated\neach time the value of the counter is updated.  Currently, these counters are\nonly updated when userspace calls read() on the fd associated with an event.\nThis means that counters which are read via the mmap\u0027d page exclusively never\nhave their timers updated.  This patch adds ensures that the timers are updated\neach time the values in the mmap\u0027d page are updated.\n\nSigned-off-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/r/1308932786-5111-1-git-send-email-emunson@mgebm.net\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "c4794295917ebeda8013b6cb9c8d71ab4f74a1fa",
      "tree": "bb422e3368f2ad686e69229b416536b2bcb1df8e",
      "parents": [
        "b7526f0ca6dc68f57ca467ce503151b1d476a3e4"
      ],
      "author": {
        "name": "Eric B Munson",
        "email": "emunson@mgebm.net",
        "time": "Thu Jun 23 16:34:38 2011 -0400"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Fri Jul 01 11:06:33 2011 +0200"
      },
      "message": "events: Move lockless timer calculation into helper function\n\nTake the timer calculation from perf_output_read and move it to a helper\nfunction for any place that needs timer values but cannot take the ctx-\u003elock.\n\nSigned-off-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/r/1308861279-15216-2-git-send-email-emunson@mgebm.net\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "b7526f0ca6dc68f57ca467ce503151b1d476a3e4",
      "tree": "979237e480c349409410f38aba502b06794a6b44",
      "parents": [
        "28009ce4a8130af7260a9271901b4419834ad152"
      ],
      "author": {
        "name": "Eric B Munson",
        "email": "emunson@mgebm.net",
        "time": "Thu Jun 23 16:34:37 2011 -0400"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Fri Jul 01 11:06:33 2011 +0200"
      },
      "message": "events: Add note to update_event_times comment about holding ctx-\u003elock\n\nSigned-off-by: Eric B Munson \u003cemunson@mgebm.net\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/r/1308861279-15216-1-git-send-email-emunson@mgebm.net\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "4ec8363dfc1451f8c8f86825731fe712798ada02",
      "tree": "12db5b26a3ffa179ef119ac945c4d9a6fb1ced88",
      "parents": [
        "0f933625e7b6c3d91878ae95e341bf1984db7eaf"
      ],
      "author": {
        "name": "Vince Weaver",
        "email": "vweaver1@eecs.utk.edu",
        "time": "Wed Jun 01 15:15:36 2011 -0400"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Fri Jul 01 11:06:32 2011 +0200"
      },
      "message": "perf_events: Fix perf buffer watermark setting\n\nSince 2.6.36 (specifically commit d57e34fdd60b (\"perf: Simplify the\nring-buffer logic: make perf_buffer_alloc() do everything needed\"),\nthe perf_buffer_init_code() has been mis-setting the buffer watermark\nif perf_event_attr.wakeup_events has a non-zero value.\n\nThis is because perf_event_attr.wakeup_events is a union with\nperf_event_attr.wakeup_watermark.\n\nThis commit re-enables the check for perf_event_attr.watermark being\nset before continuing with setting a non-default watermark.\n\nThis bug is most noticable when you are trying to use PERF_IOC_REFRESH\nwith a value larger than one and perf_event_attr.wakeup_events is set to\none.  In this case the buffer watermark will be set to 1 and you will\nget extraneous POLL_IN overflows rather than POLL_HUP as expected.\n\n[ avoid using attr.wakeup_events when attr.watermark is set ]\n\nSigned-off-by: Vince Weaver \u003cvweaver1@eecs.utk.edu\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: \u003cstable@kernel.org\u003e\nLink: http://lkml.kernel.org/r/alpine.DEB.2.00.1106011506390.5384@cl320.eecs.utk.edu\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "10e6962765f8213941eaa1cbb9de425ff0689e2e",
      "tree": "c277e4ac5b2b7156152454578c39e90da5127dd8",
      "parents": [
        "af07ce3e77d3b24ab1d71fcc5833d41800f23b2b",
        "b0af8dfdd67699e25083478c63eedef2e72ebd85"
      ],
      "author": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Fri Jul 01 10:28:42 2011 +0200"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Fri Jul 01 10:28:46 2011 +0200"
      },
      "message": "Merge commit \u0027v3.0-rc5\u0027 into perf/core\n\nMerge reason: Pick up the latest fixes.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "140fe3b1ab9c082182ef13359fab4ddba95c24c3",
      "tree": "e59debeb1aea1650fd490b0264f66b4f70a26aca",
      "parents": [
        "debf1d4948bccf58fa172acb1a7306792d77705d"
      ],
      "author": {
        "name": "Xiao Guangrong",
        "email": "xiaoguangrong@cn.fujitsu.com",
        "time": "Tue Jun 21 10:35:55 2011 +0800"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Wed Jun 29 09:59:17 2011 -0400"
      },
      "message": "jump_label: Fix jump_label update for modules\n\nThe jump labels entries for modules do not stop at __stop__jump_table,\nbut after mod-\u003ejump_entries + mod_num_jump_entries.\n\nBy checking the wrong end point, module trace events never get enabled.\n\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nAcked-by: Jason Baron \u003cjbaron@redhat.com\u003e\nTested-by: Avi Kivity \u003cavi@redhat.com\u003e\nTested-by: Johannes Berg \u003cjohannes@sipsolutions.net\u003e\nSigned-off-by: Xiao Guangrong \u003cxiaoguangrong@cn.fujitsu.com\u003e\nLink: http://lkml.kernel.org/r/4E00038B.2060404@cn.fujitsu.com\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "26c4caea9d697043cc5a458b96411b86d7f6babd",
      "tree": "cf4de2553fbfcafc41eb4f84bc9ee1eb69adf725",
      "parents": [
        "08142579b6ca35883c1ed066a2681de6f6917062"
      ],
      "author": {
        "name": "Vasiliy Kulikov",
        "email": "segoon@openwall.com",
        "time": "Mon Jun 27 16:18:11 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Jun 27 18:00:13 2011 -0700"
      },
      "message": "taskstats: don\u0027t allow duplicate entries in listener mode\n\nCurrently a single process may register exit handlers unlimited times.\nIt may lead to a bloated listeners chain and very slow process\nterminations.\n\nEg after 10KK sent TASKSTATS_CMD_ATTR_REGISTER_CPUMASKs ~300 Mb of\nkernel memory is stolen for the handlers chain and \"time id\" shows 2-7\nseconds instead of normal 0.003.  It makes it possible to exhaust all\nkernel memory and to eat much of CPU time by triggerring numerous exits\non a single CPU.\n\nThe patch limits the number of times a single process may register\nitself on a single CPU to one.\n\nOne little issue is kept unfixed - as taskstats_exit() is called before\nexit_files() in do_exit(), the orphaned listener entry (if it was not\nexplicitly deregistered) is kept until the next someone\u0027s exit() and\nimplicit deregistration in send_cpu_listeners().  So, if a process\nregistered itself as a listener exits and the next spawned process gets\nthe same pid, it would inherit taskstats attributes.\n\nSigned-off-by: Vasiliy Kulikov \u003csegooon@gmail.com\u003e\nCc: Balbir Singh \u003cbsingharora@gmail.com\u003e\nCc: \u003cstable@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": "8abf55883431a91d4877933240c8419b7fc17274",
      "tree": "c7de035cf068f3edf5053a30d912c2024bac88d8",
      "parents": [
        "4d362ad280fca0f2e098de607534f72f2c243e12",
        "b1eb085c064d0843826d7402db7fc5f3032e01fc"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Jun 25 07:23:59 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Jun 25 07:23:59 2011 -0700"
      },
      "message": "Merge branch \u0027timer-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027timer-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n  rtc: vt8500: Fix build error \u0026 cleanup rtc_class_ops-\u003eupdate_irq_enable()\n  alarmtimers: Return -ENOTSUPP if no RTC device is present\n  alarmtimers: Handle late rtc module loading\n"
    },
    {
      "commit": "1c6b39ad3f01514fd8dd84b5b412bafb75c19388",
      "tree": "bd31cf5d3e67acc9ef23c97ddd92c961b73f40c7",
      "parents": [
        "c008ba58af24dc5d0d8e9fe6e59d876910254761"
      ],
      "author": {
        "name": "John Stultz",
        "email": "john.stultz@linaro.org",
        "time": "Thu Jun 16 18:47:37 2011 -0700"
      },
      "committer": {
        "name": "John Stultz",
        "email": "john.stultz@linaro.org",
        "time": "Tue Jun 21 16:32:28 2011 -0700"
      },
      "message": "alarmtimers: Return -ENOTSUPP if no RTC device is present\n\nToralf Förster and Richard Weinberger noted that if there is\nno RTC device, the alarm timers core prints out an annoying\n\"ALARM timers will not wake from suspend\" message.\n\nThis warning has been removed in a previous patch, however\nthe issue still remains:  The original idea was to support\nalarm timers even if there was no rtc device, as long as the\nsystem didn\u0027t go into suspend.\n\nHowever, after further consideration, communicating to the application\nthat alarmtimers are not fully functional seems like the better\nsolution.\n\nSo this patch makes it so we return -ENOTSUPP to any posix _ALARM\nclockid calls if there is no backing RTC device on the system.\n\nFurther this changes the behavior where when there is no rtc device\nwe will check for one on clock_getres, clock_gettime, timer_create,\nand timer_nsleep instead of on suspend.\n\nCC: Toralf Förster \u003ctoralf.foerster@gmx.de\u003e\nCC: Richard Weinberger \u003crichard@nod.at\nCC: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCC: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nReported-by: Toralf Förster \u003ctoralf.foerster@gmx.de\u003e\nReported by: Richard Weinberger \u003crichard@nod.at\u003e\nSigned-off-by: John Stultz \u003cjohn.stultz@linaro.org\u003e\n"
    },
    {
      "commit": "c008ba58af24dc5d0d8e9fe6e59d876910254761",
      "tree": "0e718ce49992b6a7dfde619cd6ebf05afe06ae12",
      "parents": [
        "e08f6d4131ab964420f0bcabecc68d75fb49df79"
      ],
      "author": {
        "name": "John Stultz",
        "email": "john.stultz@linaro.org",
        "time": "Thu Jun 16 18:27:09 2011 -0700"
      },
      "committer": {
        "name": "John Stultz",
        "email": "john.stultz@linaro.org",
        "time": "Tue Jun 21 15:38:33 2011 -0700"
      },
      "message": "alarmtimers: Handle late rtc module loading\n\nThe alarmtimers code currently picks a rtc device to use at\nlate init time. However, if your rtc driver is loaded as a module,\nit may be registered after the alarmtimers late init code, leaving\nthe alarmtimers nonfunctional.\n\nThis patch moves the the rtcdevice selection to when we actually try\nto use it, allowing us to make use of rtc modules that may have been\nloaded at any point since bootup.\n\nCC: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCC: Meelis Roos \u003cmroos@ut.ee\u003e\nReported-by: Meelis Roos \u003cmroos@ut.ee\u003e\nSigned-off-by: John Stultz \u003cjohn.stultz@linaro.org\u003e\n"
    },
    {
      "commit": "8440f4b19494467883f8541b7aa28c7bbf6ac92b",
      "tree": "3682e034553d8b9ac676e17b144fe5b15cbb0174",
      "parents": [
        "f76b168b6f117a49d36307053e1acbe30580ea5b"
      ],
      "author": {
        "name": "Michal Kubecek",
        "email": "mkubecek@suse.cz",
        "time": "Sat Jun 18 20:34:01 2011 +0200"
      },
      "committer": {
        "name": "Rafael J. Wysocki",
        "email": "rjw@sisk.pl",
        "time": "Tue Jun 21 23:20:06 2011 +0200"
      },
      "message": "PM: Free memory bitmaps if opening /dev/snapshot fails\n\nWhen opening /dev/snapshot device, snapshot_open() creates memory\nbitmaps which are freed in snapshot_release(). But if any of the\ncallbacks called by pm_notifier_call_chain() returns NOTIFY_BAD, open()\nfails, snapshot_release() is never called and bitmaps are not freed.\nNext attempt to open /dev/snapshot then triggers BUG_ON() check in\ncreate_basic_memory_bitmaps(). This happens e.g. when vmwatchdog module\nis active on s390x.\n\nSigned-off-by: Michal Kubecek \u003cmkubecek@suse.cz\u003e\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nCc: stable@kernel.org\n"
    },
    {
      "commit": "8816ead9d8e7c2745788e0684797e1912b504f33",
      "tree": "2a619a821024d31be2ce6ff422f287792379fe5b",
      "parents": [
        "357ed6b1a110048ff8106f99092d6c4a7aadb45a",
        "203db2952bc87f5d610c9ad53a7d02b85897721f",
        "d8ad7d1123a960cc9f276bd499f9325c6f5e1bd1",
        "b5199515c25cca622495eb9c6a8a1d275e775088",
        "c1f5c54b57341e872a9d375dccef7257f86033ef"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sun Jun 19 09:00:18 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sun Jun 19 09:00:18 2011 -0700"
      },
      "message": "Merge branches \u0027perf-urgent-for-linus\u0027, \u0027sched-urgent-for-linus\u0027, \u0027timers-urgent-for-linus\u0027 and \u0027x86-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027perf-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n  tools/perf: Fix static build of perf tool\n  tracing: Fix regression in printk_formats file\n\n* \u0027sched-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n  generic-ipi: Fix kexec boot crash by initializing call_single_queue before enabling interrupts\n\n* \u0027timers-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n  clocksource: Make watchdog robust vs. interruption\n  timerfd: Fix wakeup of processes when timer is cancelled on clock change\n\n* \u0027x86-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n  x86, MAINTAINERS: Add x86 MCE people\n  x86, efi: Do not reserve boot services regions within reserved areas\n"
    },
    {
      "commit": "357ed6b1a110048ff8106f99092d6c4a7aadb45a",
      "tree": "ff4eb7e809e547bc3c0680dfd51793a8f57b2063",
      "parents": [
        "de505e709ffb09a7382ca8e0d8c7dbb171ba5830",
        "f8b7fc6b514f34a51875dd48dff70d4d17a54f38"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sun Jun 19 08:56:56 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sun Jun 19 08:56:56 2011 -0700"
      },
      "message": "Merge branch \u0027core-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n  rcu: Move RCU_BOOST #ifdefs to header file\n  rcu: use softirq instead of kthreads except when RCU_BOOST\u003dy\n  rcu: Use softirq to address performance regression\n  rcu: Simplify curing of load woes\n"
    },
    {
      "commit": "879669961b11e7f40b518784863a259f735a72bf",
      "tree": "9bff5392e365caf656c9dd9be38f7471c182278c",
      "parents": [
        "eb96c925152fc289311e5d7e956b919e9b60ab53"
      ],
      "author": {
        "name": "David Howells",
        "email": "dhowells@redhat.com",
        "time": "Fri Jun 17 11:25:59 2011 +0100"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Jun 17 09:40:48 2011 -0700"
      },
      "message": "KEYS/DNS: Fix ____call_usermodehelper() to not lose the session keyring\n\n____call_usermodehelper() now erases any credentials set by the\nsubprocess_inf::init() function.  The problem is that commit\n17f60a7da150 (\"capabilites: allow the application of capability limits\nto usermode helpers\") creates and commits new credentials with\nprepare_kernel_cred() after the call to the init() function.  This wipes\nall keyrings after umh_keys_init() is called.\n\nThe best way to deal with this is to put the init() call just prior to\nthe commit_creds() call, and pass the cred pointer to init().  That\nmeans that umh_keys_init() and suchlike can modify the credentials\n_before_ they are published and potentially in use by the rest of the\nsystem.\n\nThis prevents request_key() from working as it is prevented from passing\nthe session keyring it set up with the authorisation token to\n/sbin/request-key, and so the latter can\u0027t assume the authority to\ninstantiate the key.  This causes the in-kernel DNS resolver to fail\nwith ENOKEY unconditionally.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: Eric Paris \u003ceparis@redhat.com\u003e\nTested-by: Jeff Layton \u003cjlayton@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "d8ad7d1123a960cc9f276bd499f9325c6f5e1bd1",
      "tree": "0260df1b5b5b1601f56229c7dde54594d2dfebcb",
      "parents": [
        "eb96c925152fc289311e5d7e956b919e9b60ab53"
      ],
      "author": {
        "name": "Takao Indoh",
        "email": "indou.takao@jp.fujitsu.com",
        "time": "Tue Mar 29 12:35:04 2011 -0400"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Fri Jun 17 10:17:12 2011 +0200"
      },
      "message": "generic-ipi: Fix kexec boot crash by initializing call_single_queue before enabling interrupts\n\nThere is a problem that kdump(2nd kernel) sometimes hangs up due\nto a pending IPI from 1st kernel. Kernel panic occurs because IPI\ncomes before call_single_queue is initialized.\n\nTo fix the crash, rename init_call_single_data() to call_function_init()\nand call it in start_kernel() so that call_single_queue can be\ninitialized before enabling interrupts.\n\nThe details of the crash are:\n\n (1) 2nd kernel boots up\n\n (2) A pending IPI from 1st kernel comes when irqs are first enabled\n     in start_kernel().\n\n (3) Kernel tries to handle the interrupt, but call_single_queue\n     is not initialized yet at this point. As a result, in the\n     generic_smp_call_function_single_interrupt(), NULL pointer\n     dereference occurs when list_replace_init() tries to access\n     \u0026q-\u003elist.next.\n\nTherefore this patch changes the name of init_call_single_data()\nto call_function_init() and calls it before local_irq_enable()\nin start_kernel().\n\nSigned-off-by: Takao Indoh \u003cindou.takao@jp.fujitsu.com\u003e\nReviewed-by: WANG Cong \u003cxiyou.wangcong@gmail.com\u003e\nAcked-by: Neil Horman \u003cnhorman@tuxdriver.com\u003e\nAcked-by: Vivek Goyal \u003cvgoyal@redhat.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Milton Miller \u003cmiltonm@bga.com\u003e\nCc: Jens Axboe \u003caxboe@kernel.dk\u003e\nCc: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nCc: kexec@lists.infradead.org\nLink: http://lkml.kernel.org/r/D6CBEE2F420741indou.takao@jp.fujitsu.com\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "f8b7fc6b514f34a51875dd48dff70d4d17a54f38",
      "tree": "dc6583851e3536516761b0fd9b07f5a3a1743ebb",
      "parents": [
        "a46e0899eec7a3069bcadd45dfba7bf67c6ed016"
      ],
      "author": {
        "name": "Paul E. McKenney",
        "email": "paul.mckenney@linaro.org",
        "time": "Thu Jun 16 08:26:32 2011 -0700"
      },
      "committer": {
        "name": "Paul E. McKenney",
        "email": "paulmck@linux.vnet.ibm.com",
        "time": "Thu Jun 16 16:12:05 2011 -0700"
      },
      "message": "rcu: Move RCU_BOOST #ifdefs to header file\n\nThe commit \"use softirq instead of kthreads except when RCU_BOOST\u003dy\"\njust applied #ifdef in place.  This commit is a cleanup that moves\nthe newly #ifdef\u0027ed code to the header file kernel/rcutree_plugin.h.\n\nSigned-off-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n"
    },
    {
      "commit": "b5199515c25cca622495eb9c6a8a1d275e775088",
      "tree": "250fc4f3d02c58eddf770e9d040edeafd0012e76",
      "parents": [
        "1123d93963cbd2546449d4d9f0c568e323cb0ac6"
      ],
      "author": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Thu Jun 16 16:22:08 2011 +0200"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Thu Jun 16 19:30:53 2011 +0200"
      },
      "message": "clocksource: Make watchdog robust vs. interruption\n\nThe clocksource watchdog code is interruptible and it has been\nobserved that this can trigger false positives which disable the TSC.\n\nThe reason is that an interrupt storm or a long running interrupt\nhandler between the read of the watchdog source and the read of the\nTSC brings the two far enough apart that the delta is larger than the\nunstable treshold. Move both reads into a short interrupt disabled\nregion to avoid that.\n\nReported-and-tested-by: Vernon Mauery \u003cvernux@us.ibm.com\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: stable@kernel.org\n"
    },
    {
      "commit": "b4f9f2b64aa189c5584f266f4f0343af7a705441",
      "tree": "f410718bb93590ff61682b566c10f70d5883bbcd",
      "parents": [
        "76369139ceb955deefc509e6e12ce9d6ce50ccab",
        "2c53b436a30867eb6b47dd7bab23ba638d1fb0d2"
      ],
      "author": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Thu Jun 16 13:23:15 2011 +0200"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Thu Jun 16 13:23:22 2011 +0200"
      },
      "message": "Merge commit \u0027v3.0-rc3\u0027 into perf/core\n\nMerge reason: add the latest fixes.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "a46e0899eec7a3069bcadd45dfba7bf67c6ed016",
      "tree": "78158b4056fe1365d5086f66769abdc3ef2643c3",
      "parents": [
        "09223371deac67d08ca0b70bd18787920284c967"
      ],
      "author": {
        "name": "Paul E. McKenney",
        "email": "paulmck@linux.vnet.ibm.com",
        "time": "Wed Jun 15 15:47:09 2011 -0700"
      },
      "committer": {
        "name": "Paul E. McKenney",
        "email": "paulmck@linux.vnet.ibm.com",
        "time": "Wed Jun 15 23:07:21 2011 -0700"
      },
      "message": "rcu: use softirq instead of kthreads except when RCU_BOOST\u003dy\n\nThis patch #ifdefs RCU kthreads out of the kernel unless RCU_BOOST\u003dy,\nthus eliminating context-switch overhead if RCU priority boosting has\nnot been configured.\n\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n"
    },
    {
      "commit": "a1b6ae8ed01736dae19a33e74ea4e8dd88f891b5",
      "tree": "62019061cacdc90ba1454a8f9d227acbd7a64cde",
      "parents": [
        "21c5977a836e399fc710ff2c5367845ed5c2527f",
        "0da938c44921cfb690283d3b0c9c48a10375db2c"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Jun 15 21:45:18 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Jun 15 21:45:18 2011 -0700"
      },
      "message": "Merge branch \u0027sched-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027sched-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n  sched: Check if lowest_mask is initialized in find_lowest_rq()\n  sched: Fix need_resched() when checking peempt\n"
    },
    {
      "commit": "d2c32258798f813dc2be6cbc32f78aa5ac5cb205",
      "tree": "e44c0d0feeaa52fe7d7b02ed343f7f5b671c372a",
      "parents": [
        "b0461a44a2f1fc052fc949ae19c3a5d684627b09"
      ],
      "author": {
        "name": "Josh Triplett",
        "email": "josh@joshtriplett.org",
        "time": "Wed Jun 15 15:08:47 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Jun 15 20:04:01 2011 -0700"
      },
      "message": "gcov: disable CONFIG_CONSTRUCTORS when not needed by CONFIG_GCOV_KERNEL\n\nCONFIG_CONSTRUCTORS controls support for running constructor functions at\nkernel init time.  According to commit b99b87f70c7785ab (\"kernel:\nconstructor support\"), gcov (CONFIG_GCOV_KERNEL) needs this.  However,\nCONFIG_CONSTRUCTORS currently defaults to y, with no option to disable it,\nand CONFIG_GCOV_KERNEL depends on it.  Instead, default it to n and have\nCONFIG_GCOV_KERNEL select it, so that the normal case of\nCONFIG_GCOV_KERNEL\u003dn will result in CONFIG_CONSTRUCTORS\u003dn.\n\nObserved in the short list of \u003dy values in a minimal kernel configuration.\n\nSigned-off-by: Josh Triplett \u003cjosh@joshtriplett.org\u003e\nAcked-by: WANG Cong \u003cxiyou.wangcong@gmail.com\u003e\nAcked-by: Peter Oberparleiter \u003cpeter.oberparleiter@de.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": "733eda7ac316cd4e550fa096e4ed42356dc546e7",
      "tree": "6522f47608fb97314a7b615b1cb1d6e2c58952c8",
      "parents": [
        "37573e8c718277103f61f03741bdc5606d31b07e"
      ],
      "author": {
        "name": "KAMEZAWA Hiroyuki",
        "email": "kamezawa.hiroyu@jp.fujitsu.com",
        "time": "Wed Jun 15 15:08:43 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Jun 15 20:04:01 2011 -0700"
      },
      "message": "memcg: clear mm-\u003eowner when last possible owner leaves\n\nThe following crash was reported:\n\n\u003e Call Trace:\n\u003e [\u003cffffffff81139792\u003e] mem_cgroup_from_task+0x15/0x17\n\u003e [\u003cffffffff8113a75a\u003e] __mem_cgroup_try_charge+0x148/0x4b4\n\u003e [\u003cffffffff810493f3\u003e] ? need_resched+0x23/0x2d\n\u003e [\u003cffffffff814cbf43\u003e] ? preempt_schedule+0x46/0x4f\n\u003e [\u003cffffffff8113afe8\u003e] mem_cgroup_charge_common+0x9a/0xce\n\u003e [\u003cffffffff8113b6d1\u003e] mem_cgroup_newpage_charge+0x5d/0x5f\n\u003e [\u003cffffffff81134024\u003e] khugepaged+0x5da/0xfaf\n\u003e [\u003cffffffff81078ea0\u003e] ? __init_waitqueue_head+0x4b/0x4b\n\u003e [\u003cffffffff81133a4a\u003e] ? add_mm_counter.constprop.5+0x13/0x13\n\u003e [\u003cffffffff81078625\u003e] kthread+0xa8/0xb0\n\u003e [\u003cffffffff814d13e8\u003e] ? sub_preempt_count+0xa1/0xb4\n\u003e [\u003cffffffff814d5664\u003e] kernel_thread_helper+0x4/0x10\n\u003e [\u003cffffffff814ce858\u003e] ? retint_restore_args+0x13/0x13\n\u003e [\u003cffffffff8107857d\u003e] ? __init_kthread_worker+0x5a/0x5a\n\nWhat happens is that khugepaged tries to charge a huge page against an mm\nwhose last possible owner has already exited, and the memory controller\ncrashes when the stale mm-\u003eowner is used to look up the cgroup to charge.\n\nmm-\u003eowner has never been set to NULL with the last owner going away, but\nnobody cared until khugepaged came along.\n\nEven then it wasn\u0027t a problem because the final mmput() on an mm was\nforced to acquire and release mmap_sem in write-mode, preventing an\nexiting owner to go away while the mmap_sem was held, and until \"692e0b3\nmm: thp: optimize memcg charge in khugepaged\", the memory cgroup charge\nwas protected by mmap_sem in read-mode.\n\nInstead of going back to relying on the mmap_sem to enforce lifetime of a\ntask, this patch ensures that mm-\u003eowner is properly set to NULL when the\nlast possible owner is exiting, which the memory controller can handle\njust fine.\n\n[akpm@linux-foundation.org: tweak comments]\nSigned-off-by: Hugh Dickins \u003chughd@google.com\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nReported-by: Hugh Dickins \u003chughd@google.com\u003e\nReported-by: Dave Jones \u003cdavej@redhat.com\u003e\nReviewed-by: Andrea Arcangeli \u003caarcange@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "0da938c44921cfb690283d3b0c9c48a10375db2c",
      "tree": "7e9374a3ed16a4118f2f5d600067c471aaa80c70",
      "parents": [
        "8dd0de8be31b4b966d17750a0b10df2f575c91ac"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Tue Jun 14 18:36:25 2011 -0400"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Wed Jun 15 11:44:48 2011 +0200"
      },
      "message": "sched: Check if lowest_mask is initialized in find_lowest_rq()\n\nOn system boot up, the lowest_mask is initialized with an\nearly_initcall(). But RT tasks may wake up on other\nearly_initcall() callers before the lowest_mask is initialized,\ncausing a system crash.\n\nCommit \"d72bce0e67 rcu: Cure load woes\" was the first commit\nto wake up RT tasks in early init. Before this commit this bug\nshould not happen.\n\nReported-by: Andrew Theurer \u003chabanero@linux.vnet.ibm.com\u003e\nTested-by: Andrew Theurer \u003chabanero@linux.vnet.ibm.com\u003e\nTested-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nAcked-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nLink: http://lkml.kernel.org/r/20110614223657.824872966@goodmis.org\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "8dd0de8be31b4b966d17750a0b10df2f575c91ac",
      "tree": "991b9dddf6ef092f94bba5af7609c13c8d7b113c",
      "parents": [
        "2c53b436a30867eb6b47dd7bab23ba638d1fb0d2"
      ],
      "author": {
        "name": "Hillf Danton",
        "email": "dhillf@gmail.com",
        "time": "Tue Jun 14 18:36:24 2011 -0400"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Wed Jun 15 09:50:32 2011 +0200"
      },
      "message": "sched: Fix need_resched() when checking peempt\n\nThe RT preempt check tests the wrong task if NEED_RESCHED is\nset. It currently checks the local CPU task. It is supposed to\ncheck the task that is running on the runqueue we are about to\nwake another task on.\n\nSigned-off-by: Hillf Danton \u003cdhillf@gmail.com\u003e\nReviewed-by: Yong Zhang \u003cyong.zhang0@gmail.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nLink: http://lkml.kernel.org/r/20110614223657.450239027@goodmis.org\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "1fd8df2c3970c9e7e4e262354154ee39e58bdd7c",
      "tree": "640fbc584af8870917ea6d1fab4da49d299038ad",
      "parents": [
        "c624d33f61cd05241e85b906311f0b712fdb0f32"
      ],
      "author": {
        "name": "Masami Hiramatsu",
        "email": "masami.hiramatsu.pt@hitachi.com",
        "time": "Wed Jun 08 16:09:34 2011 +0900"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Tue Jun 14 22:48:53 2011 -0400"
      },
      "message": "tracing/kprobes: Fix kprobe-tracer to support stack trace\n\nFix to support kernel stack trace correctly on kprobe-tracer.\nSince the execution path of kprobe-based dynamic events is different\nfrom other tracepoint-based events, normal ftrace_trace_stack() doesn\u0027t\nwork correctly. To fix that, this introduces ftrace_trace_stack_regs()\nwhich traces stack via pt_regs instead of current stack register.\n\ne.g.\n\n # echo p schedule+4 \u003e /sys/kernel/debug/tracing/kprobe_events\n # echo 1 \u003e /sys/kernel/debug/tracing/options/stacktrace\n # echo 1 \u003e /sys/kernel/debug/tracing/events/kprobes/enable\n # head -n 20 /sys/kernel/debug/tracing/trace\n            bash-2968  [000] 10297.050245: p_schedule_4: (schedule+0x4/0x4ca)\n            bash-2968  [000] 10297.050247: \u003cstack trace\u003e\n \u003d\u003e schedule_timeout\n \u003d\u003e n_tty_read\n \u003d\u003e tty_read\n \u003d\u003e vfs_read\n \u003d\u003e sys_read\n \u003d\u003e system_call_fastpath\n     kworker/0:1-2940  [000] 10297.050265: p_schedule_4: (schedule+0x4/0x4ca)\n     kworker/0:1-2940  [000] 10297.050266: \u003cstack trace\u003e\n \u003d\u003e worker_thread\n \u003d\u003e kthread\n \u003d\u003e kernel_thread_helper\n            sshd-1132  [000] 10297.050365: p_schedule_4: (schedule+0x4/0x4ca)\n            sshd-1132  [000] 10297.050365: \u003cstack trace\u003e\n \u003d\u003e sysret_careful\n\nNote: Even with this fix, the first entry will be skipped\nif the probe is put on the function entry area before\nthe frame pointer is set up (usually, that is 4 bytes\n (push %bp; mov %sp %bp) on x86), because stack unwinder\ndepends on the frame pointer.\n\nSigned-off-by: Masami Hiramatsu \u003cmasami.hiramatsu.pt@hitachi.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: yrl.pp-manager.tt@hitachi.com\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Namhyung Kim \u003cnamhyung@gmail.com\u003e\nLink: http://lkml.kernel.org/r/20110608070934.17777.17116.stgit@fedora15\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "c624d33f61cd05241e85b906311f0b712fdb0f32",
      "tree": "c228ab434249c0d7bb703029efb5650a1b63cff0",
      "parents": [
        "395810627b6a43c8d0ec948884043946fa162308"
      ],
      "author": {
        "name": "Masami Hiramatsu",
        "email": "masami.hiramatsu.pt@hitachi.com",
        "time": "Wed Jun 08 16:09:27 2011 +0900"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Tue Jun 14 22:48:52 2011 -0400"
      },
      "message": "stack_trace: Add weak save_stack_trace_regs()\n\nAdd weak symbol of save_stack_trace_regs() as same as\nsave_stack_trace_tsk() since that is not implemented\nexcept x86 yet.\n\nSigned-off-by: Masami Hiramatsu \u003cmasami.hiramatsu.pt@hitachi.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: yrl.pp-manager.tt@hitachi.com\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Namhyung Kim \u003cnamhyung@gmail.com\u003e\nLink: http://lkml.kernel.org/r/20110608070927.17777.37895.stgit@fedora15\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "d7ec4bfed6c97405c6417970ba06c439e08ab8e3",
      "tree": "35272bc4262f70243382d085787765c5e83d6736",
      "parents": [
        "22fe9b54d859e53bfbbbdc1a0a77a82bc453927c"
      ],
      "author": {
        "name": "Vaibhav Nagarnaik",
        "email": "vnagarnaik@google.com",
        "time": "Tue Jun 07 17:01:42 2011 -0700"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Tue Jun 14 22:48:51 2011 -0400"
      },
      "message": "ring-buffer: Set __GFP_NORETRY flag for ring buffer allocating process\n\nThe tracing ring buffer is allocated from kernel memory. While\nallocating a large chunk of memory, OOM might happen which destabilizes\nthe system. Thus random processes might get killed during the\nallocation.\n\nThis patch adds __GFP_NORETRY flag to the ring buffer allocation calls\nto make it fail more gracefully if the system will not be able to\ncomplete the allocation request.\n\nAcked-by: David Rientjes \u003crientjes@google.com\u003e\nSigned-off-by: Vaibhav Nagarnaik \u003cvnagarnaik@google.com\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Michael Rubin \u003cmrubin@google.com\u003e\nCc: David Sharp \u003cdhsharp@google.com\u003e\nLink: http://lkml.kernel.org/r/1307491302-9236-1-git-send-email-vnagarnaik@google.com\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "22fe9b54d859e53bfbbbdc1a0a77a82bc453927c",
      "tree": "4aec2d069decbe0786ad5474908f5bbe49732ad4",
      "parents": [
        "749230b06a753a22f6ed96e5dd60815d6ab12865"
      ],
      "author": {
        "name": "Peter Huewe",
        "email": "peterhuewe@gmx.de",
        "time": "Tue Jun 07 21:58:27 2011 +0200"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Tue Jun 14 22:48:50 2011 -0400"
      },
      "message": "tracing: Convert to kstrtoul_from_user\n\nThis patch replaces the code for getting an unsigned long from a\nuserspace buffer by a simple call to kstroul_from_user.\nThis makes it easier to read and less error prone.\n\nSigned-off-by: Peter Huewe \u003cpeterhuewe@gmx.de\u003e\nLink: http://lkml.kernel.org/r/1307476707-14762-1-git-send-email-peterhuewe@gmx.de\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "749230b06a753a22f6ed96e5dd60815d6ab12865",
      "tree": "32aa2fb64a4fe4c7a9effee21f379486703ecd28",
      "parents": [
        "199abfab40389963b397c2982222e68ea782b2cf"
      ],
      "author": {
        "name": "Jiri Olsa",
        "email": "jolsa@redhat.com",
        "time": "Fri Jun 03 16:58:51 2011 +0200"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Tue Jun 14 22:48:49 2011 -0400"
      },
      "message": "tracing, function_graph: Add context-info support for function_graph tracer\n\nThe function_graph tracer does not follow global context-info option.\nAdding TRACE_ITER_CONTEXT_INFO trace_flags check to enable it.\n\nWith following commands:\n\t# echo function_graph \u003e ./current_tracer\n\t# echo 0 \u003e options/context-info\n\t# cat trace\n\nThis is what it looked like before:\n# tracer: function_graph\n#\n#     TIME        CPU  DURATION                  FUNCTION CALLS\n#      |          |     |   |                     |   |   |   |\n 1)   0.079 us    |          } /* __vma_link_rb */\n 1)   0.056 us    |          copy_page_range();\n 1)               |          security_vm_enough_memory() {\n...\n\nThis is what it looks like now:\n# tracer: function_graph\n#\n  } /* update_ts_time_stats */\n  timekeeping_max_deferment();\n...\n\nSigned-off-by: Jiri Olsa \u003cjolsa@redhat.com\u003e\nLink: http://lkml.kernel.org/r/1307113131-10045-6-git-send-email-jolsa@redhat.com\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "199abfab40389963b397c2982222e68ea782b2cf",
      "tree": "4b3707a3c8266f151ed1cd72be286ccc7dc16b81",
      "parents": [
        "f56e7f8efb4ec200364f690a9902713410e24d47"
      ],
      "author": {
        "name": "Jiri Olsa",
        "email": "jolsa@redhat.com",
        "time": "Fri Jun 03 16:58:50 2011 +0200"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Tue Jun 14 22:48:49 2011 -0400"
      },
      "message": "tracing, function_graph: Remove lock-depth from latency trace\n\nThe lock_depth was removed in commit\ne6e1e25 tracing: Remove lock_depth from event entry\n\nRemoving the lock_depth info from function_graph latency header.\n\nWith following commands:\n\t# echo function_graph \u003e ./current_tracer\n\t# echo 1 \u003e options/latency-format\n\t# cat trace\n\nThis is what it looked like before:\n# tracer: function_graph\n#\n# function_graph latency trace v1.1.5 on 3.0.0-rc1-tip+\n# --------------------------------------------------------------------\n# latency: 0 us, #59756/311298, CPU#0 | (M:preempt VP:0, KP:0, SP:0 HP:0 #P:2)\n#    -----------------\n#    | task: -0 (uid:0 nice:0 policy:0 rt_prio:0)\n#    -----------------\n#\n#      _-----\u003d\u003e irqs-off\n#     / _----\u003d\u003e need-resched\n#    | / _---\u003d\u003e hardirq/softirq\n#    || / _--\u003d\u003e preempt-depth\n#    ||| / _-\u003d\u003e lock-depth\n#    |||| /\n# CPU|||||  DURATION                  FUNCTION CALLS\n# |  |||||   |   |                     |   |   |   |\n 0)  ....  0.068 us    |    } /* __rcu_read_unlock */\n...\n\nThis is what it looks like now:\n# tracer: function_graph\n#\n# function_graph latency trace v1.1.5 on 3.0.0-rc1-tip+\n# --------------------------------------------------------------------\n# latency: 0 us, #59747/1744610, CPU#0 | (M:preempt VP:0, KP:0, SP:0 HP:0 #P:2)\n#    -----------------\n#    | task: -0 (uid:0 nice:0 policy:0 rt_prio:0)\n#    -----------------\n#\n#      _-----\u003d\u003e irqs-off\n#     / _----\u003d\u003e need-resched\n#    | / _---\u003d\u003e hardirq/softirq\n#    || / _--\u003d\u003e preempt-depth\n#    ||| /\n# CPU||||  DURATION                  FUNCTION CALLS\n# |  ||||   |   |                     |   |   |   |\n 0)  ..s.  1.641 us    |  } /* __rcu_process_callbacks */\n...\n\nSigned-off-by: Jiri Olsa \u003cjolsa@redhat.com\u003e\nLink: http://lkml.kernel.org/r/1307113131-10045-5-git-send-email-jolsa@redhat.com\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "f56e7f8efb4ec200364f690a9902713410e24d47",
      "tree": "f8708b5a7f82be989b987fbf190a55054dd41c7b",
      "parents": [
        "ffeb80fc30acbf6bd51cb47a1815f621a9d017dc"
      ],
      "author": {
        "name": "Jiri Olsa",
        "email": "jolsa@redhat.com",
        "time": "Fri Jun 03 16:58:49 2011 +0200"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Tue Jun 14 22:48:48 2011 -0400"
      },
      "message": "tracing, function: Fix trace header to follow context-info option\n\nThe header display of function tracer does not follow\nthe context-info option, so field names are displayed even\nif this option is off.\n\nAdded check for TRACE_ITER_CONTEXT_INFO trace_flags.\n\nWith following commands:\n\t# echo function \u003e ./current_tracer\n\t# echo 0 \u003e options/context-info\n\t# cat trace\n\nThis is what it looked like before:\n# tracer: function\n#\n#           TASK-PID    CPU#    TIMESTAMP  FUNCTION\n#              | |       |          |         |\nadd_preempt_count \u003c-schedule\nrcu_note_context_switch \u003c-schedule\n...\n\nThis is what it looks like now:\n# tracer: function\n#\n_raw_spin_unlock_irqrestore \u003c-hrtimer_try_to_cancel\n...\n\nSigned-off-by: Jiri Olsa \u003cjolsa@redhat.com\u003e\nLink: http://lkml.kernel.org/r/1307113131-10045-4-git-send-email-jolsa@redhat.com\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "ffeb80fc30acbf6bd51cb47a1815f621a9d017dc",
      "tree": "0291039ad5bc7f652d15157616ea2a77b7294638",
      "parents": [
        "321e68b095addc473ca52ced9acfa59be88f76e6"
      ],
      "author": {
        "name": "Jiri Olsa",
        "email": "jolsa@redhat.com",
        "time": "Fri Jun 03 16:58:48 2011 +0200"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Tue Jun 14 22:48:47 2011 -0400"
      },
      "message": "tracing, function_graph: Merge overhead and duration display functions\n\nFunctions print_graph_overhead() and print_graph_duration() displays\ndata for one field - DURATION.\n\nI merged them into single function print_graph_duration(),\nand added a way to display the empty parts of the field.\n\nThis way the print_graph_irq() function can use this column to display\nthe IRQ signs if needed and the DURATION field details stays inside\nthe print_graph_duration() function.\n\nSigned-off-by: Jiri Olsa \u003cjolsa@redhat.com\u003e\nLink: http://lkml.kernel.org/r/1307113131-10045-3-git-send-email-jolsa@redhat.com\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "321e68b095addc473ca52ced9acfa59be88f76e6",
      "tree": "43fed76c347373b651692b275f4152dcaf72eb21",
      "parents": [
        "84c15027a7f2fbd7f1180d7cbb60e41abbbaedd2"
      ],
      "author": {
        "name": "Jiri Olsa",
        "email": "jolsa@redhat.com",
        "time": "Fri Jun 03 16:58:47 2011 +0200"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Tue Jun 14 22:48:47 2011 -0400"
      },
      "message": "tracing, function_graph: Remove dependency of abstime and duration fields on latency\n\nThe display of absolute time and duration fields is based on the\nlatency field. This was added during the irqsoff/wakeup tracers\ngraph support changes.\n\nIt\u0027s causing confusion in what fields will be displayed for the\nfunction_graph tracer itself. So I\u0027m removing this depency, and\nadding absolute time and duration fields to the preemptirqsoff\npreemptoff irqsoff wakeup tracers.\n\nWith following commands:\n\t# echo function_graph \u003e ./current_tracer\n\t# cat trace\n\nThis is what it looked like before:\n# tracer: function_graph\n#\n#     TIME        CPU  DURATION                  FUNCTION CALLS\n#      |          |     |   |                     |   |   |   |\n 0)   0.068 us    |          } /* page_add_file_rmap */\n 0)               |          _raw_spin_unlock() {\n...\n\nThis is what it looks like now:\n# tracer: function_graph\n#\n# CPU  DURATION                  FUNCTION CALLS\n# |     |   |                     |   |   |   |\n 0)   0.068 us    |                } /* add_preempt_count */\n 0)   0.993 us    |              } /* vfsmount_lock_local_lock */\n...\n\nFor preemptirqsoff preemptoff irqsoff wakeup tracers,\nthis is what it looked like before:\nSNIP\n#                       _-----\u003d\u003e irqs-off\n#                      / _----\u003d\u003e need-resched\n#                     | / _---\u003d\u003e hardirq/softirq\n#                     || / _--\u003d\u003e preempt-depth\n#                     ||| / _-\u003d\u003e lock-depth\n#                     |||| /\n# CPU  TASK/PID       |||||  DURATION                  FUNCTION CALLS\n# |     |    |        |||||   |   |                     |   |   |   |\n 1)    \u003cidle\u003e-0    |  d..1  0.000 us    |  acpi_idle_enter_simple();\n...\n\nThis is what it looks like now:\nSNIP\n#\n#                                       _-----\u003d\u003e irqs-off\n#                                      / _----\u003d\u003e need-resched\n#                                     | / _---\u003d\u003e hardirq/softirq\n#                                     || / _--\u003d\u003e preempt-depth\n#                                     ||| /\n#     TIME        CPU  TASK/PID       ||||  DURATION                  FUNCTION CALLS\n#      |          |     |    |        ||||   |   |                     |   |   |   |\n   19.847735 |   1)    \u003cidle\u003e-0    |  d..1  0.000 us    |  acpi_idle_enter_simple();\n...\n\nSigned-off-by: Jiri Olsa \u003cjolsa@redhat.com\u003e\nLink: http://lkml.kernel.org/r/1307113131-10045-2-git-send-email-jolsa@redhat.com\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "84c15027a7f2fbd7f1180d7cbb60e41abbbaedd2",
      "tree": "178205c66fe01998b9eb72a3fca17dd72682f032",
      "parents": [
        "bd38c0e6f98326132a691d73b2056b426423c638"
      ],
      "author": {
        "name": "Paul McQuade",
        "email": "tungstentide@gmail.com",
        "time": "Tue May 31 20:51:55 2011 +0100"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Tue Jun 14 22:48:46 2011 -0400"
      },
      "message": "async: Fixed an include coding style issue\n\nAdded \u003clinux/atomic.h\u003e,\u003clinux/ktime.h\u003e and Removed \u003casm/atomic.h\u003e.\nAdded KERN_DEBUG to printk() functions.\n\nAcked-by: Arjan van de Ven \u003carjan@linux.intel.com\u003e\nSigned-off-by: Paul McQuade \u003ctungstentide@gmail.com\u003e\nLink: http://lkml.kernel.org/r/4DE596B4.7030904@gmail.com\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "bd38c0e6f98326132a691d73b2056b426423c638",
      "tree": "4e7f9a0efcfdb23e564db51da275fd9234ffa84f",
      "parents": [
        "cf30cf67d6c7592c670ec946d89fc15ee0deb0eb"
      ],
      "author": {
        "name": "Paul McQuade",
        "email": "tungstentide@gmail.com",
        "time": "Tue May 31 20:51:55 2011 +0100"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Tue Jun 14 22:48:45 2011 -0400"
      },
      "message": "ftrace: Fixed an include coding style issue\n\nRemoved \u003casm/ftrace.h\u003e because \u003clinux/ftrace.h\u003e was already declared.\nBraces of struct\u0027s coding style fixed.\n\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nSigned-off-by: Paul McQuade \u003ctungstentide@gmail.com\u003e\nLink: http://lkml.kernel.org/r/4DE59711.3090900@gmail.com\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "cf30cf67d6c7592c670ec946d89fc15ee0deb0eb",
      "tree": "f86ca612b255ee8570e2fd6198e066ea8cf33fe0",
      "parents": [
        "4f271a2a60c748599b30bb4dafff30d770439b96"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Tue Jun 14 22:44:07 2011 -0400"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Tue Jun 14 22:48:45 2011 -0400"
      },
      "message": "tracing: Add disable_on_free option\n\nAdd a trace option to disable tracing on free. When this option is\nset, a write into the free_buffer file will not only shrink the\nring buffer down to zero, but it will also disable tracing.\n\nCc: Vaibhav Nagarnaik \u003cvnagarnaik@google.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "4f271a2a60c748599b30bb4dafff30d770439b96",
      "tree": "4b6aa671e0fbe3e81a423a551ce5aa1032725e2b",
      "parents": [
        "7ea5906405a1f3fc1c0033dfd7e02f2cfd1de5e5"
      ],
      "author": {
        "name": "Vaibhav Nagarnaik",
        "email": "vnagarnaik@google.com",
        "time": "Mon Jun 13 17:51:57 2011 -0700"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Tue Jun 14 22:48:37 2011 -0400"
      },
      "message": "tracing: Add a proc file to stop tracing and free buffer\n\nThe proc file entry buffer_size_kb is used to set the size of tracing\nbuffer. The memory to expand the buffer size is kernel memory. Consider\na use case where tracing is handled by a user space utility, which acts\nas a gate keeper for tracing requests. In an OOM condition, tracing is\nconsidered a low priority task and if the utility gets killed the ring\nbuffer memory cannot be released back to the kernel.\n\nThis patch adds a proc file called \"free_buffer\" whose purpose is to\nstop tracing and free up the ring buffer when it is closed.\n\nThe user space process can then set the desired size in buffer_size_kb\nfile and open the fd to the \"free_buffer\" file. Under OOM condition, if\nthe process gets killed, the kernel closes the file descriptor. The\nrelease handler stops the tracing and releases the kernel memory\nautomatically.\n\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Michael Rubin \u003cmrubin@google.com\u003e\nCc: David Sharp \u003cdhsharp@google.com\u003e\nSigned-off-by: Vaibhav Nagarnaik \u003cvnagarnaik@google.com\u003e\nLink: http://lkml.kernel.org/r/1308012717-11148-1-git-send-email-vnagarnaik@google.com\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "ada9c93312f7ec49514c68c211595ce2601cebae",
      "tree": "d20d678c04daf68705f3006e3bc2a00746f3eb18",
      "parents": [
        "60b8b1de0dd2bf246f0e074d287bb3f0bc42a755"
      ],
      "author": {
        "name": "Randy Dunlap",
        "email": "randy.dunlap@oracle.com",
        "time": "Tue Jun 14 15:50:11 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Jun 14 19:12:17 2011 -0700"
      },
      "message": "signal.c: fix kernel-doc notation\n\nFix kernel-doc warnings in signal.c:\n\n  Warning(kernel/signal.c:2374): No description found for parameter \u0027nset\u0027\n  Warning(kernel/signal.c:2374): Excess function parameter \u0027set\u0027 description in \u0027sys_rt_sigprocmask\u0027\n\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "7ea5906405a1f3fc1c0033dfd7e02f2cfd1de5e5",
      "tree": "f75e962db25ccd3efa81e1fc69ce3e60d228c7a6",
      "parents": [
        "e7e2ee89a9dbf48d70a922d5625cd7320a27cbff"
      ],
      "author": {
        "name": "Vaibhav Nagarnaik",
        "email": "vnagarnaik@google.com",
        "time": "Tue May 03 17:56:42 2011 -0700"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Tue Jun 14 22:04:39 2011 -0400"
      },
      "message": "tracing: Use NUMA allocation for per-cpu ring buffer pages\n\nThe tracing ring buffer is a group of per-cpu ring buffers where\nallocation and logging is done on a per-cpu basis. The events that are\ngenerated on a particular CPU are logged in the corresponding buffer.\nThis is to provide wait-free writes between CPUs and good NUMA node\nlocality while accessing the ring buffer.\n\nHowever, the allocation routines consider NUMA locality only for buffer\npage metadata and not for the actual buffer page. This causes the pages\nto be allocated on the NUMA node local to the CPU where the allocation\nroutine is running at the time.\n\nThis patch fixes the problem by using a NUMA node specific allocation\nroutine so that the pages are allocated from a NUMA node local to the\nlogging CPU.\n\nI tested with the getuid_microbench from autotest. It is a simple binary\nthat calls getuid() in a loop and measures the average time for the\nsyscall to complete. The following command was used to test:\n$ getuid_microbench 1000000\n\nCompared the numbers found on kernel with and without this patch and\nfound that logging latency decreases by 30-50 ns/call.\ntracing with non-NUMA allocation - 569 ns/call\ntracing with NUMA allocation     - 512 ns/call\n\nSigned-off-by: Vaibhav Nagarnaik \u003cvnagarnaik@google.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: Michael Rubin \u003cmrubin@google.com\u003e\nCc: David Sharp \u003cdhsharp@google.com\u003e\nLink: http://lkml.kernel.org/r/1304470602-20366-1-git-send-email-vnagarnaik@google.com\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "e7e2ee89a9dbf48d70a922d5625cd7320a27cbff",
      "tree": "58a5d3387c7b0bf9a4f434867234c0771c22addb",
      "parents": [
        "b58f6b0dd3d677338b9065388cc2cc942b86338e"
      ],
      "author": {
        "name": "Vaibhav Nagarnaik",
        "email": "vnagarnaik@google.com",
        "time": "Tue May 10 13:27:21 2011 -0700"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Tue Jun 14 21:59:41 2011 -0400"
      },
      "message": "tracing: Schedule a delayed work to call wakeup()\n\nIn using syscall tracing by concurrent processes, the wakeup() that is\ncalled in the event commit function causes contention on the spin lock\nof the waitqueue. I enabled sys_enter_getuid and sys_exit_getuid\ntracepoints, and by running getuid_microbench from autotest in parallel\nI found that the contention causes exponential latency increase in the\ntracing path.\n\nThe autotest binary getuid_microbench calls getuid() in a tight loop for\nthe given number of iterations and measures the average time required to\ncomplete a single invocation of syscall.\n\nThe patch schedules a delayed work after 2 ms once an event commit calls\nto wake up the trace wait_queue. This removes the delay caused by\ncontention on spin lock in wakeup() and amortizes the wakeup() calls\nscheduled over the 2 ms period.\n\nIn the following example, the script enables the sys_enter_getuid and\nsys_exit_getuid tracepoints and runs the getuid_microbench in parallel\nwith the given number of processes. The output clearly shows the latency\nincrease caused by contentions.\n\n$ ~/getuid.sh 1\n1000000 calls in 0.720974253 s (720.974253 ns/call)\n\n$ ~/getuid.sh 2\n1000000 calls in 1.166457554 s (1166.457554 ns/call)\n1000000 calls in 1.168933765 s (1168.933765 ns/call)\n\n$ ~/getuid.sh 3\n1000000 calls in 1.783827516 s (1783.827516 ns/call)\n1000000 calls in 1.795553270 s (1795.553270 ns/call)\n1000000 calls in 1.796493376 s (1796.493376 ns/call)\n\n$ ~/getuid.sh 4\n1000000 calls in 4.483041796 s (4483.041796 ns/call)\n1000000 calls in 4.484165388 s (4484.165388 ns/call)\n1000000 calls in 4.484850762 s (4484.850762 ns/call)\n1000000 calls in 4.485643576 s (4485.643576 ns/call)\n\n$ ~/getuid.sh 5\n1000000 calls in 6.497521653 s (6497.521653 ns/call)\n1000000 calls in 6.502000236 s (6502.000236 ns/call)\n1000000 calls in 6.501709115 s (6501.709115 ns/call)\n1000000 calls in 6.502124100 s (6502.124100 ns/call)\n1000000 calls in 6.502936358 s (6502.936358 ns/call)\n\nAfter the patch, the latencies scale better.\n1000000 calls in 0.728720455 s (728.720455 ns/call)\n\n1000000 calls in 0.842782857 s (842.782857 ns/call)\n1000000 calls in 0.883803135 s (883.803135 ns/call)\n\n1000000 calls in 0.902077764 s (902.077764 ns/call)\n1000000 calls in 0.902838202 s (902.838202 ns/call)\n1000000 calls in 0.908896885 s (908.896885 ns/call)\n\n1000000 calls in 0.932523515 s (932.523515 ns/call)\n1000000 calls in 0.958009672 s (958.009672 ns/call)\n1000000 calls in 0.986188020 s (986.188020 ns/call)\n1000000 calls in 0.989771102 s (989.771102 ns/call)\n\n1000000 calls in 0.933518391 s (933.518391 ns/call)\n1000000 calls in 0.958897947 s (958.897947 ns/call)\n1000000 calls in 1.031038897 s (1031.038897 ns/call)\n1000000 calls in 1.089516025 s (1089.516025 ns/call)\n1000000 calls in 1.141998347 s (1141.998347 ns/call)\n\nSigned-off-by: Vaibhav Nagarnaik \u003cvnagarnaik@google.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: Michael Rubin \u003cmrubin@google.com\u003e\nCc: David Sharp \u003cdhsharp@google.com\u003e\nCc: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nLink: http://lkml.kernel.org/r/1305059241-7629-1-git-send-email-vnagarnaik@google.com\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "09223371deac67d08ca0b70bd18787920284c967",
      "tree": "0ad0354a93ac209c8cfd2b79d03d0462aa3c5c58",
      "parents": [
        "9a432736904d386cda28b987b38ba14dae960ecc"
      ],
      "author": {
        "name": "Shaohua Li",
        "email": "shaohua.li@intel.com",
        "time": "Tue Jun 14 13:26:25 2011 +0800"
      },
      "committer": {
        "name": "Paul E. McKenney",
        "email": "paulmck@linux.vnet.ibm.com",
        "time": "Tue Jun 14 15:25:39 2011 -0700"
      },
      "message": "rcu: Use softirq to address performance regression\n\nCommit a26ac2455ffcf3(rcu: move TREE_RCU from softirq to kthread)\nintroduced performance regression. In an AIM7 test, this commit degraded\nperformance by about 40%.\n\nThe commit runs rcu callbacks in a kthread instead of softirq. We observed\nhigh rate of context switch which is caused by this. Out test system has\n64 CPUs and HZ is 1000, so we saw more than 64k context switch per second\nwhich is caused by RCU\u0027s per-CPU kthread.  A trace showed that most of\nthe time the RCU per-CPU kthread doesn\u0027t actually handle any callbacks,\nbut instead just does a very small amount of work handling grace periods.\nThis means that RCU\u0027s per-CPU kthreads are making the scheduler do quite\na bit of work in order to allow a very small amount of RCU-related\nprocessing to be done.\n\nAlex Shi\u0027s analysis determined that this slowdown is due to lock\ncontention within the scheduler.  Unfortunately, as Peter Zijlstra points\nout, the scheduler\u0027s real-time semantics require global action, which\nmeans that this contention is inherent in real-time scheduling.  (Yes,\nperhaps someone will come up with a workaround -- otherwise, -rt is not\ngoing to do well on large SMP systems -- but this patch will work around\nthis issue in the meantime.  And \"the meantime\" might well be forever.)\n\nThis patch therefore re-introduces softirq processing to RCU, but only\nfor core RCU work.  RCU callbacks are still executed in kthread context,\nso that only a small amount of RCU work runs in softirq context in the\ncommon case.  This should minimize ksoftirqd execution, allowing us to\nskip boosting of ksoftirqd for CONFIG_RCU_BOOST\u003dy kernels.\n\nSigned-off-by: Shaohua Li \u003cshaohua.li@intel.com\u003e\nTested-by: \"Alex,Shi\" \u003calex.shi@intel.com\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\n"
    },
    {
      "commit": "9a432736904d386cda28b987b38ba14dae960ecc",
      "tree": "20294203f9c6132d79737e9ab54c746546afe7d4",
      "parents": [
        "59c5f46fbe01a00eedf54a23789634438bb80603"
      ],
      "author": {
        "name": "Paul E. McKenney",
        "email": "paulmck@linux.vnet.ibm.com",
        "time": "Mon May 30 20:38:55 2011 -0700"
      },
      "committer": {
        "name": "Paul E. McKenney",
        "email": "paulmck@linux.vnet.ibm.com",
        "time": "Tue Jun 14 15:25:15 2011 -0700"
      },
      "message": "rcu: Simplify curing of load woes\n\nMake the functions creating the kthreads wake them up.  Leverage the\nfact that the per-node and boost kthreads can run anywhere, thus\ndispensing with the need to wake them up once the incoming CPU has\ngone fully online.\n\nSigned-off-by: Paul E. McKenney \u003cpaulmck@linux.vnet.ibm.com\u003e\nTested-by: Daniel J Blueman \u003cdaniel.blueman@gmail.com\u003e\n"
    },
    {
      "commit": "c78a9b9b8e36b8de302eddbe7a1688af3d9650ff",
      "tree": "3857996cf30ae6a60b5afe2e1e3e30f75fbca05e",
      "parents": [
        "842c895d140a75e5d67fa346213deb3ca2b460f8",
        "5f127133ee432d0b83ee26e8e3a3d7828ab5f2b1"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Jun 13 10:45:49 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Jun 13 10:45:49 2011 -0700"
      },
      "message": "Merge branch \u0027perf-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027perf-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n  ftrace: Revert 8ab2b7efd ftrace: Remove unnecessary disabling of irqs\n  kprobes/trace: Fix kprobe selftest for gcc 4.6\n  ftrace: Fix possible undefined return code\n  oprofile, dcookies: Fix possible circular locking dependency\n  oprofile: Fix locking dependency in sync_start()\n  oprofile: Free potentially owned tasks in case of errors\n  oprofile, x86: Add comments to IBS LVT offset initialization\n"
    },
    {
      "commit": "13863a66c9c8a663665445cf05d68de96ff31830",
      "tree": "cb7864cf23b6f26f3eb11cfe09526eb7110a0e9a",
      "parents": [
        "7f45e5cd1718ed769295033ca214032848a0097d"
      ],
      "author": {
        "name": "Jesper Juhl",
        "email": "jj@chaosbits.net",
        "time": "Thu Jun 09 23:14:58 2011 +0200"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Fri Jun 10 10:53:42 2011 +0200"
      },
      "message": "genirq: Prevent potential NULL dereference in irq_set_irq_wake()\n\nIn kernel/irq/manage.c::irq_set_irq_wake() we call\nirq_get_desc_buslock() which may return NULL, but the code\ndereferences the result unconditionally.\n\nirq_set_irq_wake() has lots of callers - I checked a few and I couldn\u0027t\nfind anything that guarantees that they won\u0027t call it with some input that\nwill cause irq_get_desc_buslock() to return NULL, so I think it\u0027s a good\nthing to test and -EINVAL was the most sane error code in this situation\nthat I could think of.\n\nNot all callers test the return value of irq_set_irq_wake(), but those\nthat do take !\u003d 0 to mean error as far as I can see, so they should be\nfine. I guess those that don\u0027t test actually should, but that\u0027s a\ndifferent issue.\n\nSigned-off-by: Jesper Juhl \u003cjj@chaosbits.net\u003e\nLink: http://lkml.kernel.org/r/alpine.LNX.2.00.1106092300360.17868@swampdragon.chaosbits.net\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n"
    },
    {
      "commit": "db5e7ecc4abc91b9f26f0c0d79ef88a51e987d90",
      "tree": "022c475cc132e64f01c0765d2d965c0aa5df2286",
      "parents": [
        "5cf42f7055648aaba68ce95ecec69128d7fbf65f"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Thu Jun 09 08:40:59 2011 -0400"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Thu Jun 09 08:42:15 2011 -0400"
      },
      "message": "tracing: Fix regression in printk_formats file\n\nThe fix to fix the printk_formats of modules broke the\nprintk_formats of trace_printks in the kernel.\n\nThe update of what to show via the seq_file was only updated\nif the passed in fmt was NULL, which happens only on the first\niteration. The result was showing the first format every time\ninstead of iterating through the available formats.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "76369139ceb955deefc509e6e12ce9d6ce50ccab",
      "tree": "5ba2732188d2fecd4fd49b93f73e51e17fb69082",
      "parents": [
        "b58f6b0dd3d677338b9065388cc2cc942b86338e"
      ],
      "author": {
        "name": "Frederic Weisbecker",
        "email": "fweisbec@gmail.com",
        "time": "Thu May 19 19:55:04 2011 +0200"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Thu Jun 09 12:57:54 2011 +0200"
      },
      "message": "perf: Split up buffer handling from core code\n\nAnd create the internal perf events header.\n\nv2: Keep an internal inlined perf_output_copy()\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nAcked-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Borislav Petkov \u003cbp@alien8.de\u003e\nCc: Stephane Eranian \u003ceranian@google.com\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nLink: http://lkml.kernel.org/r/1305827704-5607-1-git-send-email-fweisbec@gmail.com\n[ v3: use clearer \u0027ring_buffer\u0027 and \u0027rb\u0027 naming ]\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "33726bf2140a0e7c9de3ccd7cba6d69962f0b773",
      "tree": "a4f5bca74d61072533806a2fe7f257357cae1ce2",
      "parents": [
        "5b28f6a25ee202046e2d57bd431671bc23cf3dd1",
        "d7ebe75b065a7c2d58ffc12f9d2e00d5ea4e71eb"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Jun 08 08:36:15 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Jun 08 08:36:15 2011 -0700"
      },
      "message": "Merge branch \u0027perf-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027perf-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n  perf: Fix comments in include/linux/perf_event.h\n  perf: Comment /proc/sys/kernel/perf_event_paranoid to be part of user ABI\n  perf python: Fix argument name list of read_on_cpu()\n  perf evlist: Don\u0027t die if sample_{id_all|type} is invalid\n  perf python: Use exception to propagate errors\n  perf evlist: Remove dependency on debug routines\n  perf, cgroups: Fix up for new API\n"
    },
    {
      "commit": "cb0a02ecf95e5f47d92e7d4c513cc1f7aeb40cda",
      "tree": "3e9b2341855a1b5ddac5f0edb74a679111f8a350",
      "parents": [
        "d681f1204d701cafbc45fa90e0ac977acddc33cc",
        "c5182b8867e189e14a8df5dbfcba1c73f286e061"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Jun 07 19:21:11 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Jun 07 19:21:11 2011 -0700"
      },
      "message": "Merge branch \u0027irq-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027irq-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n  genirq: Ensure we locate the passed IRQ in irq_alloc_descs()\n  genirq: Fix descriptor init on non-sparse IRQs\n  irq: Handle spurios irq detection for threaded irqs\n  genirq: Print threaded handler in spurious debug output\n"
    },
    {
      "commit": "6715a52a581c891e9a2034abe1c81ddb482d70b3",
      "tree": "03bac8851232d11382af718c2d10559cc16e4f0f",
      "parents": [
        "ef2398019b305827ea7130ebaf7bf521b444530e",
        "6c6c54e1807faf116724451ef2bd14993780470a"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Jun 07 19:20:28 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Jun 07 19:20:28 2011 -0700"
      },
      "message": "Merge branch \u0027sched-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027sched-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n  sched: Fix/clarify set_task_cpu() locking rules\n  lockdep: Fix lock_is_held() on recursion\n  sched: Fix schedstat.nr_wakeups_migrate\n  sched: Fix cross-cpu clock sync on remote wakeups\n"
    },
    {
      "commit": "a4f18ed11a4ddf327dd91cd19e237278600ad327",
      "tree": "bbe96241c6db2be16e881920a3312ec937ed7cd1",
      "parents": [
        "265a5b7ee3eb21a4d0e53e17d59ba6eada91af39"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Tue Jun 07 09:26:46 2011 -0400"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Tue Jun 07 14:49:19 2011 -0400"
      },
      "message": "ftrace: Revert 8ab2b7efd ftrace: Remove unnecessary disabling of irqs\n\nRevert the commit that removed the disabling of interrupts around\nthe initial modifying of mcount callers to nops, and update the comment.\n\nThe original comment was outdated and stated that the interrupts were\nbeing disabled to prevent kstop machine, which was required with the\nold ftrace daemon, but was no longer the case.\n\nWhat the comment failed to mention was that interrupts needed to be\ndisabled to keep interrupts from preempting the modifying of the code\nand then executing the code that was partially modified.\n\nRevert the commit and update the comment.\n\nReported-by: Richard W.M. Jones \u003crjones@redhat.com\u003e\nTested-by: Richard W.M. Jones \u003crjones@redhat.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "265a5b7ee3eb21a4d0e53e17d59ba6eada91af39",
      "tree": "52ad853f49e8949a307f475115cc682d44753287",
      "parents": [
        "0aff1c0cef13b34c17e81a502336fad738151c37"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Mon Jun 06 22:35:13 2011 -0400"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Tue Jun 07 14:47:36 2011 -0400"
      },
      "message": "kprobes/trace: Fix kprobe selftest for gcc 4.6\n\nWith gcc 4.6, the self test kprobe function:\n\n kprobe_trace_selftest_target()\n\nis optimized such that kallsyms does not list it. The kprobes\ntest uses this function to insert a probe and test it. But\nit will fail the test if the function is not listed in kallsyms.\n\nAdding a __used annotation keeps the symbol in the kallsyms table.\n\nSuggested-by: David Daney \u003cddaney@caviumnetworks.com\u003e\nCc: Masami Hiramatsu \u003cmasami.hiramatsu.pt@hitachi.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "b58f6b0dd3d677338b9065388cc2cc942b86338e",
      "tree": "1c10cd87480b3c05b100fb4d85afaecfe2dd5b1b",
      "parents": [
        "3ce2a0bc9dfb6423491afe0afc9f099e24b8cba4"
      ],
      "author": {
        "name": "Peter Zijlstra",
        "email": "peterz@infradead.org",
        "time": "Tue Jun 07 00:23:28 2011 +0200"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Tue Jun 07 13:02:41 2011 +0200"
      },
      "message": "perf, core: Fix initial task_ctx/event installation\n\nA lost Quilt refresh of 2c29ef0fef8 (perf: Simplify and fix\n__perf_install_in_context()) is causing grief and lockups,\nreported by Jiri Olsa.\n\nWhen installing an event in a task context, there\u0027s a number of\nissues:\n\n - there might not be an existing task context, in which case\n   we should install the now current context;\n\n - there might already be a context, not the current one, in\n   which case we should de-schedule the old and install the new;\n\nthese cases were dealt with in the lost refresh, however there is one\nfurther case that was found in testing:\n\n - there might already be a context, the current one, in which\n   case we should still de-schedule, and should take care\n   to re-install it (note that task_ctx_sched_out() clears\n   cpuctx-\u003etask_ctx).\n\nReported-by: Jiri Olsa \u003cjolsa@redhat.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/r/1307399008.2497.971.camel@laptop\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "6c6c54e1807faf116724451ef2bd14993780470a",
      "tree": "c306ec3d4876b70022b81f577d96ddb1c643c1d5",
      "parents": [
        "f2513cde93f0957d5dc6c09bc24b0cccd27d8e1d"
      ],
      "author": {
        "name": "Peter Zijlstra",
        "email": "peterz@infradead.org",
        "time": "Fri Jun 03 17:37:07 2011 +0200"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Tue Jun 07 12:26:40 2011 +0200"
      },
      "message": "sched: Fix/clarify set_task_cpu() locking rules\n\nSergey reported a CONFIG_PROVE_RCU warning in push_rt_task where\nset_task_cpu() was called with both relevant rq-\u003elocks held, which\nshould be sufficient for running tasks since holding its rq-\u003elock\nwill serialize against sched_move_task().\n\nUpdate the comments and fix the task_group() lockdep test.\n\nReported-and-tested-by: Sergey Senozhatsky \u003csergey.senozhatsky@gmail.com\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/r/1307115427.2353.3456.camel@twins\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "f2513cde93f0957d5dc6c09bc24b0cccd27d8e1d",
      "tree": "b461cb0836170eb555b20818802c121c79e76d33",
      "parents": [
        "f339b9dc1f03591761d5d930800db24bc0eda1e1"
      ],
      "author": {
        "name": "Peter Zijlstra",
        "email": "a.p.zijlstra@chello.nl",
        "time": "Mon Jun 06 12:32:43 2011 +0200"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Tue Jun 07 12:25:50 2011 +0200"
      },
      "message": "lockdep: Fix lock_is_held() on recursion\n\nThe main lock_is_held() user is lockdep_assert_held(), avoid false\nassertions in lockdep_off() sections by unconditionally reporting the\nlock is taken.\n\n[ the reason this is important is a lockdep_assert_held() in ttwu()\n  which triggers a warning under lockdep_off() as in printk() which\n  can trigger another wakeup and lock up due to spinlock\n  recursion, as reported and heroically debugged by Arne Jansen ]\n\nReported-and-tested-by: Arne Jansen \u003clists@die-jansens.de\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nCc: \u003cstable@kernel.org\u003e\nLink: http://lkml.kernel.org/r/1307398759.2497.966.camel@laptop\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "0aff1c0cef13b34c17e81a502336fad738151c37",
      "tree": "3bf383429c3d948bd34ff71ae78d82bb2439fab5",
      "parents": [
        "d7ebe75b065a7c2d58ffc12f9d2e00d5ea4e71eb"
      ],
      "author": {
        "name": "GuoWen Li",
        "email": "guowen.li.linux@gmail.com",
        "time": "Wed Jun 01 19:18:47 2011 +0800"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Mon Jun 06 22:34:25 2011 -0400"
      },
      "message": "ftrace: Fix possible undefined return code\n\nkernel/trace/ftrace.c: In function \u0027ftrace_regex_write.clone.15\u0027:\nkernel/trace/ftrace.c:2743:6: warning: \u0027ret\u0027 may be used uninitialized in this\nfunction\n\nSigned-off-by: GuoWen Li \u003cguowen.li.linux@gmail.com\u003e\nLink: http://lkml.kernel.org/r/201106011918.47939.guowen.li.linux@gmail.com\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "3ce2a0bc9dfb6423491afe0afc9f099e24b8cba4",
      "tree": "58fbef582846fef0e777b1a552aca12e21a071b1",
      "parents": [
        "aef29bf20bd79c73992ab23d5067e9f0448b466e",
        "aa4a221875873d2a1f9656cb7fd7e545e952b4fa"
      ],
      "author": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Sat Jun 04 12:28:05 2011 +0200"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Sat Jun 04 12:28:05 2011 +0200"
      },
      "message": "Merge branch \u0027perf/urgent\u0027 into perf/core\n\nConflicts:\n\ttools/perf/util/python.c\n\nMerge reason: resolve the conflict with perf/urgent.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "aa4a221875873d2a1f9656cb7fd7e545e952b4fa",
      "tree": "44f66345c06c94cfc95d17b337d45e09917e475d",
      "parents": [
        "710054ba25c0d1f8f41c22ce13ba336503fb5318"
      ],
      "author": {
        "name": "Vince Weaver",
        "email": "vweaver1@eecs.utk.edu",
        "time": "Fri Jun 03 17:54:40 2011 -0400"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Sat Jun 04 12:22:04 2011 +0200"
      },
      "message": "perf: Comment /proc/sys/kernel/perf_event_paranoid to be part of user ABI\n\nTurns out that distro packages use this file as an indicator of\nthe perf event subsystem - this is easier to check for from scripts\nthan the existence of the system call.\n\nThis is easy enough to keep around for the kernel, so add a\ncomment to make sure it stays so.\n\nSigned-off-by: Vince Weaver \u003cvweaver1@eecs.utk.edu\u003e\nCc: David Ahern \u003cdsahern@gmail.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: paulus@samba.org\nCc: acme@redhat.com\nCc: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nLink: http://lkml.kernel.org/r/alpine.DEB.2.00.1106031751170.29381@cl320.eecs.utk.edu\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "710054ba25c0d1f8f41c22ce13ba336503fb5318",
      "tree": "f9b09b722bf511841539173d946f90a20fc2e59a",
      "parents": [
        "74c355fbdfedd3820046dba4f537876cea54c207",
        "b273fa9716aa1564bee88ceee62f9042981cdc81"
      ],
      "author": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Sat Jun 04 12:13:06 2011 +0200"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Sat Jun 04 12:13:06 2011 +0200"
      },
      "message": "Merge branch \u0027perf/urgent\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent\n"
    },
    {
      "commit": "1c3cc11602111d1318c2a5743bd2e88c82813927",
      "tree": "d46a1e4a1914f3bc307f8f6215864144926d0193",
      "parents": [
        "1b054b67d3bfc6dca9f634c104780f3f24ff3eec"
      ],
      "author": {
        "name": "Sebastian Andrzej Siewior",
        "email": "sebastian@breakpoint.cc",
        "time": "Sat May 21 12:58:28 2011 +0200"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Fri Jun 03 15:02:32 2011 +0200"
      },
      "message": "timers: Consider slack value in mod_timer()\n\nThere is an optimization which does not update the timer if the timer\nwas pending and the expiration time was unchanged.\n\nSince commit 3bbb9ec9 (\"timers: Introduce the concept of timer slack\nfor legacy timers\") this optimization is no longer applied for timers\nwhere the expiration time got extended due to the slack value. So we\nneed to check again after the expiration time might have been updated.\n\n[ tglx: Made it a single check by applying slack first and sorting\n  out the slack \u003d 0 value (all timeouts \u003c 256 jiffies) early ]\n\nSigned-off-by: Sebastian Andrzej Siewior \u003csebastian@breakpoint.cc\u003e\nLink: http://lkml.kernel.org/r/20110521105828.GA29442@Chamillionaire.breakpoint.cc\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n"
    },
    {
      "commit": "c5182b8867e189e14a8df5dbfcba1c73f286e061",
      "tree": "89ac7169ab5009625770124e8b78549e69009ea1",
      "parents": [
        "e7fbad300a7a6432238f086e3c9a61538a905858"
      ],
      "author": {
        "name": "Mark Brown",
        "email": "broonie@opensource.wolfsonmicro.com",
        "time": "Thu Jun 02 18:55:13 2011 +0100"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Fri Jun 03 14:53:16 2011 +0200"
      },
      "message": "genirq: Ensure we locate the passed IRQ in irq_alloc_descs()\n\nWhen irq_alloc_descs() is called with no base IRQ specified then it will\nsearch for a range of IRQs starting from a specified base address. In the\ncase where an IRQ is specified it still does this search in order to ensure\nthat none of the requested range is already allocated and it still uses the\nfrom parameter to specify the base for the search. This means that in the\ncase where a base is specified but from is zero (which is reasonable as\nany IRQ number is in the range specified by a zero from) the function will\nget confused and try to allocate the first suitably sized block of free IRQs\nit finds.\n\nInstead use a specified IRQ as the base address for the search, and insist\nthat any from that is specified can support that IRQ.\n\nSigned-off-by: Mark Brown \u003cbroonie@opensource.wolfsonmicro.com\u003e\nLink: http://lkml.kernel.org/r/1307037313-15733-1-git-send-email-broonie@opensource.wolfsonmicro.com\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n"
    },
    {
      "commit": "e7fbad300a7a6432238f086e3c9a61538a905858",
      "tree": "76841c453717fd32be49d7d2b06e835e15b87c99",
      "parents": [
        "3a43e05f4d0600e906fa09f4a65d749288c44592"
      ],
      "author": {
        "name": "Linus Walleij",
        "email": "linus.walleij@stericsson.com",
        "time": "Tue May 31 18:14:39 2011 +0200"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Fri Jun 03 14:53:16 2011 +0200"
      },
      "message": "genirq: Fix descriptor init on non-sparse IRQs\n\nThe genirq changes are initializing descriptors for sparse IRQs quite\ndifferently from how non-sparse (stacked?) IRQs are initialized, with\nthe effect that on my platform all IRQs are default-disabled on sparse\nIRQs and default-enabled if non-sparse IRQs are used, crashing some\nGPIO driver.\n\nFix this by refactoring the non-sparse IRQs to use the same descriptor\ninit function as the sparse IRQs.\n\nSigned-off: Linus Walleij \u003clinus.walleij@linaro.org\u003e\nLink: http://lkml.kernel.org/r/1306858479-16622-1-git-send-email-linus.walleij@stericsson.com\nCc: stable@kernel.org # 2.6.39\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n"
    },
    {
      "commit": "3a43e05f4d0600e906fa09f4a65d749288c44592",
      "tree": "b99732c8f459e70078c7dd90f62a5174376e3c62",
      "parents": [
        "ef26f20cd117eb3c185038ed7cbf7b235575751d"
      ],
      "author": {
        "name": "Sebastian Andrzej Siewior",
        "email": "sebastian@breakpoint.cc",
        "time": "Tue May 31 08:56:11 2011 +0200"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Fri Jun 03 14:53:15 2011 +0200"
      },
      "message": "irq: Handle spurios irq detection for threaded irqs\n\nThe detection of spurios interrupts is currently limited to first level\nhandler. In force-threaded mode we never notice if the threaded irq does\nnot feel responsible.\nThis patch catches the return value of the threaded handler and forwards\nit to the spurious detector. If the primary handler returns only\nIRQ_WAKE_THREAD then the spourious detector ignores it because it gets\ncalled again from the threaded handler.\n\n[ tglx: Report the erroneous return value early and bail out ]\n\nSigned-off-by: Sebastian Andrzej Siewior \u003csebastian@breakpoint.cc\u003e\nLink: http://lkml.kernel.org/r/1306824972-27067-2-git-send-email-sebastian@breakpoint.cc\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n"
    },
    {
      "commit": "ef26f20cd117eb3c185038ed7cbf7b235575751d",
      "tree": "630c5b348bb2dc7abbb3bd820a51a6fa8c6e5c5d",
      "parents": [
        "1fa7b6a29c61358cc2ca6f64cef4aa0e1a7ca74c"
      ],
      "author": {
        "name": "Sebastian Andrzej Siewior",
        "email": "sebastian@breakpoint.cc",
        "time": "Tue May 31 08:56:10 2011 +0200"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Fri Jun 03 14:53:15 2011 +0200"
      },
      "message": "genirq: Print threaded handler in spurious debug output\n\nIn forced threaded mode (or with an explicit threaded handler) we only\nsee the primary handler, but not the threaded handler.\n\nSigned-off-by: Sebastian Andrzej Siewior \u003csebastian@breakpoint.cc\u003e\nLink: http://lkml.kernel.org/r/1306824972-27067-1-git-send-email-sebastian@breakpoint.cc\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n"
    },
    {
      "commit": "1b054b67d3bfc6dca9f634c104780f3f24ff3eec",
      "tree": "af50fb7333001692879c18474e84ac2736f984d1",
      "parents": [
        "1fa7b6a29c61358cc2ca6f64cef4aa0e1a7ca74c"
      ],
      "author": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Fri Jun 03 11:13:33 2011 +0200"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Fri Jun 03 11:13:33 2011 +0200"
      },
      "message": "clockevents: Handle empty cpumask gracefully\n\nFor UP it\u0027s stupid to request an initialized cpumask for the clock\nevent devices. Though we need the mask set even on UP to avoid a\nhorrible ifdeffery especially in the broadcast code.\n\nFor SMP we can at least try to survive with a warning and set the\ncpumask of the cpu we\u0027re running on. That gives a decent chance to\nbring the machine up and retrieve the debug info.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Linus Walleij \u003clinus.walleij@linaro.org\nCc: Lee Jones \u003clee.jones@linaro.org\u003e\nCc: Russell King - ARM Linux \u003clinux@arm.linux.org.uk\u003e\nCc: Stephen Boyd \u003csboyd@codeaurora.org\u003e\n"
    },
    {
      "commit": "27eb4a1e4a56afacb0540c24084b9e0342f9956b",
      "tree": "85bd26c6d7cdee8ee4c2d69d195f3e2bdbbc54fe",
      "parents": [
        "64ce312618ef0e11d88def80effcefd1b59fdb1e",
        "55922c9d1b84b89cb946c777fddccb3247e7df2c"
      ],
      "author": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Fri Jun 03 10:41:03 2011 +0200"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Fri Jun 03 10:41:08 2011 +0200"
      },
      "message": "Merge commit \u0027v3.0-rc1\u0027 into perf/core\n\nMerge reason: merge in the latest fixes.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "74c355fbdfedd3820046dba4f537876cea54c207",
      "tree": "3a07851e63f5eb9a233286c6683f7e8c7d9d61a2",
      "parents": [
        "89e1be50c68eb5e58b873dce87bbac627ee18d1f"
      ],
      "author": {
        "name": "Peter Zijlstra",
        "email": "a.p.zijlstra@chello.nl",
        "time": "Mon May 30 16:48:06 2011 +0200"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Tue May 31 14:20:25 2011 +0200"
      },
      "message": "perf, cgroups: Fix up for new API\n\nBen changed the cgroup API in commit f780bdb7c1c (cgroups: add\nper-thread subsystem callbacks) in an incompatible way, but\nforgot to convert the perf cgroup bits.\n\nAvoid compile warnings and runtime splats and convert perf too ;-)\n\nAcked-by: Ben Blum \u003cbblum@andrew.cmu.edu\u003e\nCc: Stephane Eranian \u003ceranian@google.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/r/1306767651.1200.2990.camel@twins\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "f339b9dc1f03591761d5d930800db24bc0eda1e1",
      "tree": "901c78b6e8ccaf9e74515d176084c75389bc2832",
      "parents": [
        "f01114cb59d670e9b4f2c335930dd57db96e9360"
      ],
      "author": {
        "name": "Peter Zijlstra",
        "email": "a.p.zijlstra@chello.nl",
        "time": "Tue May 31 10:49:20 2011 +0200"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Tue May 31 14:19:57 2011 +0200"
      },
      "message": "sched: Fix schedstat.nr_wakeups_migrate\n\nWhile looking over the code I found that with the ttwu rework the\nnr_wakeups_migrate test broke since we now switch cpus prior to\ncalling ttwu_stat(), hence the test is always true.\n\nCure this by passing the migration state in wake_flags. Also move the\nwhole test under CONFIG_SMP, its hard to migrate tasks on UP :-)\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/n/tip-pwwxl7gdqs5676f1d4cx6pj7@git.kernel.org\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "f01114cb59d670e9b4f2c335930dd57db96e9360",
      "tree": "98e2c76fd78e1e6762c92423a3e6f867a027ca3c",
      "parents": [
        "1e1b6c511d1b23cb7c3b619d82fc7bd9f620565d"
      ],
      "author": {
        "name": "Peter Zijlstra",
        "email": "a.p.zijlstra@chello.nl",
        "time": "Tue May 31 12:26:55 2011 +0200"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Tue May 31 14:19:56 2011 +0200"
      },
      "message": "sched: Fix cross-cpu clock sync on remote wakeups\n\nMarkus reported that commit 317f394160e (\"sched: Move the second half\nof ttwu() to the remote cpu\") caused some accounting funnies on his AMD\nPhenom II X4, such as weird \u0027top\u0027 results.\n\nIt turns out that this is due to non-synced TSC and the queued remote\nwakeups stopped coupeling the two relevant cpu clocks, which leads to\nwakeups seeing time jumps, which in turn lead to skewed runtime stats.\n\nAdd an explicit call to sched_clock_cpu() to couple the per-cpu clocks\nto restore the normal flow of time.\n\nReported-and-tested-by: Markus Trippelsdorf \u003cmarkus@trippelsdorf.de\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/r/1306835745.2353.3.camel@twins\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "d72bce0e67e8afc6eb959f656013cbb577426f1e",
      "tree": "9c93d4df9aa895d6f2f555e0cf50e7ae5ebaded4",
      "parents": [
        "55922c9d1b84b89cb946c777fddccb3247e7df2c"
      ],
      "author": {
        "name": "Peter Zijlstra",
        "email": "peterz@infradead.org",
        "time": "Mon May 30 13:34:51 2011 +0200"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Tue May 31 10:01:48 2011 +0200"
      },
      "message": "rcu: Cure load woes\n\nCommit cc3ce5176d83 (rcu: Start RCU kthreads in TASK_INTERRUPTIBLE\nstate) fudges a sleeping task\u0027 state, resulting in the scheduler seeing\na TASK_UNINTERRUPTIBLE task going to sleep, but a TASK_INTERRUPTIBLE\ntask waking up. The result is unbalanced load calculation.\n\nThe problem that patch tried to address is that the RCU threads could\nstay in UNINTERRUPTIBLE state for quite a while and triggering the hung\ntask detector due to on-demand wake-ups.\n\nCure the problem differently by always giving the tasks at least one\nwake-up once the CPU is fully up and running, this will kick them out of\nthe initial UNINTERRUPTIBLE state and into the regular INTERRUPTIBLE\nwait state.\n\n[ The alternative would be teaching kthread_create() to start threads as\n  INTERRUPTIBLE but that needs a tad more thought. ]\n\nReported-by: Damien Wyart \u003cdamien.wyart@free.fr\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Paul E. McKenney \u003cpaul.mckenney@linaro.org\u003e\nLink: http://lkml.kernel.org/r/1306755291.1200.2872.camel@twins\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "6345d24daf0c1fffe6642081d783cdf653ebaa5c",
      "tree": "415a253621279111bd481d48cbb86174c70b952a",
      "parents": [
        "cab0d85c8dfcad4d799f9c294571440c6f1db091"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sun May 29 11:32:28 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sun May 29 11:32:28 2011 -0700"
      },
      "message": "mm: Fix boot crash in mm_alloc()\n\nThomas Gleixner reports that we now have a boot crash triggered by\nCONFIG_CPUMASK_OFFSTACK\u003dy:\n\n    BUG: unable to handle kernel NULL pointer dereference at   (null)\n    IP: [\u003cc11ae035\u003e] find_next_bit+0x55/0xb0\n    Call Trace:\n     [\u003cc11addda\u003e] cpumask_any_but+0x2a/0x70\n     [\u003cc102396b\u003e] flush_tlb_mm+0x2b/0x80\n     [\u003cc1022705\u003e] pud_populate+0x35/0x50\n     [\u003cc10227ba\u003e] pgd_alloc+0x9a/0xf0\n     [\u003cc103a3fc\u003e] mm_init+0xec/0x120\n     [\u003cc103a7a3\u003e] mm_alloc+0x53/0xd0\n\nwhich was introduced by commit de03c72cfce5 (\"mm: convert\nmm-\u003ecpu_vm_cpumask into cpumask_var_t\"), and is due to wrong ordering of\nmm_init() vs mm_init_cpumask\n\nThomas wrote a patch to just fix the ordering of initialization, but I\nhate the new double allocation in the fork path, so I ended up instead\ndoing some more radical surgery to clean it all up.\n\nReported-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nReported-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "f310642123e0d32d919c60ca3fab5acd130c4ba3",
      "tree": "f3844152e2e8c0fdd01621a400f84c8a159252a0",
      "parents": [
        "ef1d57599dc904fdb31b8e9b5336350d21a1fde1",
        "5d4c47e0195b989f284907358bd5c268a44b91c7"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sun May 29 11:18:09 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sun May 29 11:18:09 2011 -0700"
      },
      "message": "Merge branch \u0027idle-release\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6\n\n* \u0027idle-release\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6:\n  x86 idle: deprecate mwait_idle() and \"idle\u003dmwait\" cmdline param\n  x86 idle: deprecate \"no-hlt\" cmdline param\n  x86 idle APM: deprecate CONFIG_APM_CPU_IDLE\n  x86 idle floppy: deprecate disable_hlt()\n  x86 idle: EXPORT_SYMBOL(default_idle, pm_idle) only when APM demands it\n  x86 idle: clarify AMD erratum 400 workaround\n  idle governor: Avoid lock acquisition to read pm_qos before entering idle\n  cpuidle: menu: fixed wrapping timers at 4.294 seconds\n"
    },
    {
      "commit": "333c5ae9948194428fe6c5ef5c088304fc98263b",
      "tree": "83d1cf3a781642e2c366086e0b9e244a7b60fae5",
      "parents": [
        "7467571f4480b273007517b26297c07154c73924"
      ],
      "author": {
        "name": "Tim Chen",
        "email": "tim.c.chen@linux.intel.com",
        "time": "Fri Feb 11 12:49:04 2011 -0800"
      },
      "committer": {
        "name": "Len Brown",
        "email": "len.brown@intel.com",
        "time": "Sun May 29 00:50:59 2011 -0400"
      },
      "message": "idle governor: Avoid lock acquisition to read pm_qos before entering idle\n\nThanks to the reviews and comments by Rafael, James, Mark and Andi.\nHere\u0027s version 2 of the patch incorporating your comments and also some\nupdate to my previous patch comments.\n\nI noticed that before entering idle state, the menu idle governor will\nlook up the current pm_qos target value according to the list of qos\nrequests received.  This look up currently needs the acquisition of a\nlock to access the list of qos requests to find the qos target value,\nslowing down the entrance into idle state due to contention by multiple\ncpus to access this list.  The contention is severe when there are a lot\nof cpus waking and going into idle.  For example, for a simple workload\nthat has 32 pair of processes ping ponging messages to each other, where\n64 cpu cores are active in test system, I see the following profile with\n37.82% of cpu cycles spent in contention of pm_qos_lock:\n\n-     37.82%          swapper  [kernel.kallsyms]          [k]\n_raw_spin_lock_irqsave\n   - _raw_spin_lock_irqsave\n      - 95.65% pm_qos_request\n           menu_select\n           cpuidle_idle_call\n         - cpu_idle\n              99.98% start_secondary\n\nA better approach will be to cache the updated pm_qos target value so\nreading it does not require lock acquisition as in the patch below.\nWith this patch the contention for pm_qos_lock is removed and I saw a\n2.2X increase in throughput for my message passing workload.\n\ncc: stable@kernel.org\nSigned-off-by: Tim Chen \u003ctim.c.chen@linux.intel.com\u003e\nAcked-by: Andi Kleen \u003cak@linux.intel.com\u003e\nAcked-by: James Bottomley \u003cJames.Bottomley@suse.de\u003e\nAcked-by: mark gross \u003cmarkgross@thegnar.org\u003e\nSigned-off-by: Len Brown \u003clen.brown@intel.com\u003e\n"
    },
    {
      "commit": "08a8b79600101fd6e13dcf05409b330e7f5b0478",
      "tree": "461cf4061eb33d96966c5c348029bc3b5cb523bf",
      "parents": [
        "1ba4b8cb94e59b17fd0142a509eb583695c36db6",
        "1e1b6c511d1b23cb7c3b619d82fc7bd9f620565d"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat May 28 12:56:46 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat May 28 12:56:46 2011 -0700"
      },
      "message": "Merge branch \u0027sched-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027sched-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n  cpuset: Fix cpuset_cpus_allowed_fallback(), don\u0027t update tsk-\u003ert.nr_cpus_allowed\n  sched: Fix -\u003emin_vruntime calculation in dequeue_entity()\n  sched: Fix ttwu() for __ARCH_WANT_INTERRUPTS_ON_CTXSW\n  sched: More sched_domain iterations fixes\n"
    },
    {
      "commit": "1ba4b8cb94e59b17fd0142a509eb583695c36db6",
      "tree": "e42d1967025670401758d32964a5fa048f59f10a",
      "parents": [
        "c4a227d89f758e582fd167bb15245f2704de99ef",
        "cc3ce5176d83cd8ae1134f86e208ea758d6cb78e"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat May 28 12:56:32 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat May 28 12:56:32 2011 -0700"
      },
      "message": "Merge branch \u0027core-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n  rcu: Start RCU kthreads in TASK_INTERRUPTIBLE state\n  rcu: Remove waitqueue usage for cpu, node, and boost kthreads\n  rcu: Avoid acquiring rcu_node locks in timer functions\n  atomic: Add atomic_or()\n  Documentation: Add statistics about nested locks\n  rcu: Decrease memory-barrier usage based on semi-formal proof\n  rcu: Make rcu_enter_nohz() pay attention to nesting\n  rcu: Don\u0027t do reschedule unless in irq\n  rcu: Remove old memory barriers from rcu_process_callbacks()\n  rcu: Add memory barriers\n  rcu: Fix unpaired rcu_irq_enter() from locking selftests\n"
    },
    {
      "commit": "c4a227d89f758e582fd167bb15245f2704de99ef",
      "tree": "f5b6e0091e6543c14d1cd7cf1f93e097a96bbd64",
      "parents": [
        "87367a0b71a5188e34a913c05673b5078f71a64d",
        "f506b3dc0ec454a16d40cab9ee5d75435b39dc50"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat May 28 12:55:55 2011 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat May 28 12:55:55 2011 -0700"
      },
      "message": "Merge branch \u0027perf-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027perf-urgent-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (25 commits)\n  perf: Fix SIGIO handling\n  perf top: Don\u0027t stop if no kernel symtab is found\n  perf top: Handle kptr_restrict\n  perf top: Remove unused macro\n  perf events: initialize fd array to -1 instead of 0\n  perf tools: Make sure kptr_restrict warnings fit 80 col terms\n  perf tools: Fix build on older systems\n  perf symbols: Handle /proc/sys/kernel/kptr_restrict\n  perf: Remove duplicate headers\n  ftrace: Add internal recursive checks\n  tracing: Update btrfs\u0027s tracepoints to use u64 interface\n  tracing: Add __print_symbolic_u64 to avoid warnings on 32bit machine\n  ftrace: Set ops-\u003eflag to enabled even on static function tracing\n  tracing: Have event with function tracer check error return\n  ftrace: Have ftrace_startup() return failure code\n  jump_label: Check entries limit in __jump_label_update\n  ftrace/recordmcount: Avoid STT_FUNC symbols as base on ARM\n  scripts/tags.sh: Add magic for trace-events for etags too\n  scripts/tags.sh: Fix ctags for DEFINE_EVENT()\n  x86/ftrace: Fix compiler warning in ftrace.c\n  ...\n"
    },
    {
      "commit": "64ce312618ef0e11d88def80effcefd1b59fdb1e",
      "tree": "884c247a013b8d13fa7a1f90dfa5bc01e16d62d6",
      "parents": [
        "e03a9a55b4e45377af9ca3d464135f9ea280b8f8"
      ],
      "author": {
        "name": "Peter Zijlstra",
        "email": "a.p.zijlstra@chello.nl",
        "time": "Sat Apr 09 21:17:48 2011 +0200"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Sat May 28 18:01:23 2011 +0200"
      },
      "message": "perf: De-schedule a task context when removing the last event\n\nSince perf_install_in_context() will now install a context when we\nadd the first event, we can de-schedule the context when the last\nevent is removed.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/r/20110409192142.090431763@chello.nl\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    }
  ],
  "next": "e03a9a55b4e45377af9ca3d464135f9ea280b8f8"
}