)]}'
{
  "log": [
    {
      "commit": "b0fc494fae96a7089f3651cb451f461c7291244c",
      "tree": "586412b9ecbd8e3f04e8cd90a31644f94ff3a7d8",
      "parents": [
        "3d0833953e1b98b79ddf491dd49229eef9baeac1"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Mon May 12 21:20:43 2008 +0200"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Fri May 23 20:33:19 2008 +0200"
      },
      "message": "ftrace: add ftrace_enabled sysctl to disable mcount function\n\nThis patch adds back the sysctl ftrace_enabled. This time it is\ndefaulted to on, if DYNAMIC_FTRACE is configured. When ftrace_enabled\nis disabled, the ftrace function is set to the stub return.\n\nIf DYNAMIC_FTRACE is also configured, on ftrace_enabled \u003d 0,\nthe registered ftrace functions will all be set to jmps, but no more\nnew calls to ftrace recording (used to find the ftrace calling sites)\nwill be called.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n"
    },
    {
      "commit": "3d0833953e1b98b79ddf491dd49229eef9baeac1",
      "tree": "3520cda824bdb58e47ce3e9f43d68249d5cc1a12",
      "parents": [
        "6cd8a4bb2f97527a9ceb30bc77ea4e959c6a95e3"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Mon May 12 21:20:42 2008 +0200"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Fri May 23 20:33:09 2008 +0200"
      },
      "message": "ftrace: dynamic enabling/disabling of function calls\n\nThis patch adds a feature to dynamically replace the ftrace code\nwith the jmps to allow a kernel with ftrace configured to run\nas fast as it can without it configured.\n\nThe way this works, is on bootup (if ftrace is enabled), a ftrace\nfunction is registered to record the instruction pointer of all\nplaces that call the function.\n\nLater, if there\u0027s still any code to patch, a kthread is awoken\n(rate limited to at most once a second) that performs a stop_machine,\nand replaces all the code that was called with a jmp over the call\nto ftrace. It only replaces what was found the previous time. Typically\nthe system reaches equilibrium quickly after bootup and there\u0027s no code\npatching needed at all.\n\ne.g.\n\n  call ftrace  /* 5 bytes */\n\nis replaced with\n\n  jmp 3f  /* jmp is 2 bytes and we jump 3 forward */\n3:\n\nWhen we want to enable ftrace for function tracing, the IP recording\nis removed, and stop_machine is called again to replace all the locations\nof that were recorded back to the call of ftrace.  When it is disabled,\nwe replace the code back to the jmp.\n\nAllocation is done by the kthread. If the ftrace recording function is\ncalled, and we don\u0027t have any record slots available, then we simply\nskip that call. Once a second a new page (if needed) is allocated for\nrecording new ftrace function calls.  A large batch is allocated at\nboot up to get most of the calls there.\n\nBecause we do this via stop_machine, we don\u0027t have to worry about another\nCPU executing a ftrace call as we modify it. But we do need to worry\nabout NMI\u0027s so all functions that might be called via nmi must be\nannotated with notrace_nmi. When this code is configured in, the NMI code\nwill not call notrace.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n"
    },
    {
      "commit": "6cd8a4bb2f97527a9ceb30bc77ea4e959c6a95e3",
      "tree": "845af8f3c7f8956b4f3591759a0d67248af243a2",
      "parents": [
        "81d68a96a39844853b37f20cc8282d9b65b78ef3"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Mon May 12 21:20:42 2008 +0200"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Fri May 23 20:32:54 2008 +0200"
      },
      "message": "ftrace: trace preempt off critical timings\n\nAdd preempt off timings. A lot of kernel core code is taken from the RT patch\nlatency trace that was written by Ingo Molnar.\n\nThis adds \"preemptoff\" and \"preemptirqsoff\" to /debugfs/tracing/available_tracers\n\nNow instead of just tracing irqs off, preemption off can be selected\nto be recorded.\n\nWhen this is selected, it shares the same files as irqs off timings.\nOne can either trace preemption off, irqs off, or one or the other off.\n\nBy echoing \"preemptoff\" into /debugfs/tracing/current_tracer, recording\nof preempt off only is performed. \"irqsoff\" will only record the time\nirqs are disabled, but \"preemptirqsoff\" will take the total time irqs\nor preemption are disabled. Runtime switching of these options is now\nsupported by simpling echoing in the appropriate trace name into\n/debugfs/tracing/current_tracer.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n"
    },
    {
      "commit": "81d68a96a39844853b37f20cc8282d9b65b78ef3",
      "tree": "bbc05f415930c15fb5a1004620bd77585fcec43a",
      "parents": [
        "352ad25aa4a189c667cb2af333948d34692a2d27"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Mon May 12 21:20:42 2008 +0200"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Fri May 23 20:32:46 2008 +0200"
      },
      "message": "ftrace: trace irq disabled critical timings\n\nThis patch adds latency tracing for critical timings\n(how long interrupts are disabled for).\n\n \"irqsoff\" is added to /debugfs/tracing/available_tracers\n\nNote:\n  tracing_max_latency\n    also holds the max latency for irqsoff (in usecs).\n   (default to large number so one must start latency tracing)\n\n  tracing_thresh\n    threshold (in usecs) to always print out if irqs off\n    is detected to be longer than stated here.\n    If irq_thresh is non-zero, then max_irq_latency\n    is ignored.\n\nHere\u0027s an example of a trace with ftrace_enabled \u003d 0\n\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\npreemption latency trace v1.1.5 on 2.6.24-rc7\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n--------------------------------------------------------------------\n latency: 100 us, #3/3, CPU#1 | (M:rt VP:0, KP:0, SP:0 HP:0 #P:2)\n    -----------------\n    | task: swapper-0 (uid:0 nice:0 policy:0 rt_prio:0)\n    -----------------\n \u003d\u003e started at: _spin_lock_irqsave+0x2a/0xb7\n \u003d\u003e ended at:   _spin_unlock_irqrestore+0x32/0x5f\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               |||| /\n               |||||     delay\n   cmd     pid ||||| time  |   caller\n      \\   /    |||||   \\   |   /\n swapper-0     1d.s3    0us+: _spin_lock_irqsave+0x2a/0xb7 (e1000_update_stats+0x47/0x64c [e1000])\n swapper-0     1d.s3  100us : _spin_unlock_irqrestore+0x32/0x5f (e1000_update_stats+0x641/0x64c [e1000])\n swapper-0     1d.s3  100us : trace_hardirqs_on_caller+0x75/0x89 (_spin_unlock_irqrestore+0x32/0x5f)\n\nvim:ft\u003dhelp\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n\nAnd this is a trace with ftrace_enabled \u003d\u003d 1\n\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\npreemption latency trace v1.1.5 on 2.6.24-rc7\n--------------------------------------------------------------------\n latency: 102 us, #12/12, CPU#1 | (M:rt VP:0, KP:0, SP:0 HP:0 #P:2)\n    -----------------\n    | task: swapper-0 (uid:0 nice:0 policy:0 rt_prio:0)\n    -----------------\n \u003d\u003e started at: _spin_lock_irqsave+0x2a/0xb7\n \u003d\u003e ended at:   _spin_unlock_irqrestore+0x32/0x5f\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               |||| /\n               |||||     delay\n   cmd     pid ||||| time  |   caller\n      \\   /    |||||   \\   |   /\n swapper-0     1dNs3    0us+: _spin_lock_irqsave+0x2a/0xb7 (e1000_update_stats+0x47/0x64c [e1000])\n swapper-0     1dNs3   46us : e1000_read_phy_reg+0x16/0x225 [e1000] (e1000_update_stats+0x5e2/0x64c [e1000])\n swapper-0     1dNs3   46us : e1000_swfw_sync_acquire+0x10/0x99 [e1000] (e1000_read_phy_reg+0x49/0x225 [e1000])\n swapper-0     1dNs3   46us : e1000_get_hw_eeprom_semaphore+0x12/0xa6 [e1000] (e1000_swfw_sync_acquire+0x36/0x99 [e1000])\n swapper-0     1dNs3   47us : __const_udelay+0x9/0x47 (e1000_read_phy_reg+0x116/0x225 [e1000])\n swapper-0     1dNs3   47us+: __delay+0x9/0x50 (__const_udelay+0x45/0x47)\n swapper-0     1dNs3   97us : preempt_schedule+0xc/0x84 (__delay+0x4e/0x50)\n swapper-0     1dNs3   98us : e1000_swfw_sync_release+0xc/0x55 [e1000] (e1000_read_phy_reg+0x211/0x225 [e1000])\n swapper-0     1dNs3   99us+: e1000_put_hw_eeprom_semaphore+0x9/0x35 [e1000] (e1000_swfw_sync_release+0x50/0x55 [e1000])\n swapper-0     1dNs3  101us : _spin_unlock_irqrestore+0xe/0x5f (e1000_update_stats+0x641/0x64c [e1000])\n swapper-0     1dNs3  102us : _spin_unlock_irqrestore+0x32/0x5f (e1000_update_stats+0x641/0x64c [e1000])\n swapper-0     1dNs3  102us : trace_hardirqs_on_caller+0x75/0x89 (_spin_unlock_irqrestore+0x32/0x5f)\n\nvim:ft\u003dhelp\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n"
    },
    {
      "commit": "352ad25aa4a189c667cb2af333948d34692a2d27",
      "tree": "83a11c626b3818711d3b88061964c9ea603f7b68",
      "parents": [
        "35e8e302e5d6e32675df2fc1dd3a53dfa6630dc1"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Mon May 12 21:20:42 2008 +0200"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Fri May 23 20:32:36 2008 +0200"
      },
      "message": "ftrace: tracer for scheduler wakeup latency\n\nThis patch adds the tracer that tracks the wakeup latency of the\nhighest priority waking task.\n\n  \"wakeup\" is added to /debugfs/tracing/available_tracers\n\nAlso added to /debugfs/tracing\n\n  tracing_max_latency\n     holds the current max latency for the wakeup\n\n  wakeup_thresh\n     if set to other than zero, a log will be recorded\n     for every wakeup that takes longer than the number\n     entered in here (usecs for all counters)\n     (deletes previous trace)\n\nExamples:\n\n  (with ftrace_enabled \u003d 0)\n\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\npreemption latency trace v1.1.5 on 2.6.24-rc8\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n--------------------------------------------------------------------\n latency: 26 us, #2/2, CPU#1 | (M:rt VP:0, KP:0, SP:0 HP:0 #P:2)\n    -----------------\n    | task: migration/0-3 (uid:0 nice:-5 policy:1 rt_prio:99)\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               |||| /\n               |||||     delay\n   cmd     pid ||||| time  |   caller\n      \\   /    |||||   \\   |   /\n   quilt-8551  0d..3    0us+: wake_up_process+0x15/0x17 \u003cffffffff80233e80\u003e (sched_exec+0xc9/0x100 \u003cffffffff80235343\u003e)\n   quilt-8551  0d..4   26us : sched_switch_callback+0x73/0x81 \u003cffffffff80338d2f\u003e (schedule+0x483/0x6d5 \u003cffffffff8048b3ee\u003e)\n\nvim:ft\u003dhelp\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n\n  (with ftrace_enabled \u003d 1)\n\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\npreemption latency trace v1.1.5 on 2.6.24-rc8\n--------------------------------------------------------------------\n latency: 36 us, #45/45, CPU#0 | (M:rt VP:0, KP:0, SP:0 HP:0 #P:2)\n    -----------------\n    | task: migration/1-5 (uid:0 nice:-5 policy:1 rt_prio:99)\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               |||| /\n               |||||     delay\n   cmd     pid ||||| time  |   caller\n      \\   /    |||||   \\   |   /\n    bash-10653 1d..3    0us : wake_up_process+0x15/0x17 \u003cffffffff80233e80\u003e (sched_exec+0xc9/0x100 \u003cffffffff80235343\u003e)\n    bash-10653 1d..3    1us : try_to_wake_up+0x271/0x2e7 \u003cffffffff80233dcf\u003e (sub_preempt_count+0xc/0x7a \u003cffffffff8023309e\u003e)\n    bash-10653 1d..2    2us : try_to_wake_up+0x296/0x2e7 \u003cffffffff80233df4\u003e (update_rq_clock+0x9/0x20 \u003cffffffff802303f3\u003e)\n    bash-10653 1d..2    2us : update_rq_clock+0x1e/0x20 \u003cffffffff80230408\u003e (__update_rq_clock+0xc/0x90 \u003cffffffff80230366\u003e)\n    bash-10653 1d..2    3us : __update_rq_clock+0x1b/0x90 \u003cffffffff80230375\u003e (sched_clock+0x9/0x29 \u003cffffffff80214529\u003e)\n    bash-10653 1d..2    4us : try_to_wake_up+0x2a6/0x2e7 \u003cffffffff80233e04\u003e (activate_task+0xc/0x3f \u003cffffffff8022ffca\u003e)\n    bash-10653 1d..2    4us : activate_task+0x2d/0x3f \u003cffffffff8022ffeb\u003e (enqueue_task+0xe/0x66 \u003cffffffff8022ff66\u003e)\n    bash-10653 1d..2    5us : enqueue_task+0x5b/0x66 \u003cffffffff8022ffb3\u003e (enqueue_task_rt+0x9/0x3c \u003cffffffff80233351\u003e)\n    bash-10653 1d..2    6us : try_to_wake_up+0x2ba/0x2e7 \u003cffffffff80233e18\u003e (check_preempt_wakeup+0x12/0x99 \u003cffffffff80234f84\u003e)\n[...]\n    bash-10653 1d..5   33us : tracing_record_cmdline+0xcf/0xd4 \u003cffffffff80338aad\u003e (_spin_unlock+0x9/0x33 \u003cffffffff8048d3ec\u003e)\n    bash-10653 1d..5   34us : _spin_unlock+0x19/0x33 \u003cffffffff8048d3fc\u003e (sub_preempt_count+0xc/0x7a \u003cffffffff8023309e\u003e)\n    bash-10653 1d..4   35us : wakeup_sched_switch+0x65/0x2ff \u003cffffffff80339f66\u003e (_spin_lock_irqsave+0xc/0xa9 \u003cffffffff8048d08b\u003e)\n    bash-10653 1d..4   35us : _spin_lock_irqsave+0x19/0xa9 \u003cffffffff8048d098\u003e (add_preempt_count+0xe/0x77 \u003cffffffff8023311a\u003e)\n    bash-10653 1d..4   36us : sched_switch_callback+0x73/0x81 \u003cffffffff80338d2f\u003e (schedule+0x483/0x6d5 \u003cffffffff8048b3ee\u003e)\n\nvim:ft\u003dhelp\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n\nThe [...] was added here to not waste your email box space.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n"
    },
    {
      "commit": "35e8e302e5d6e32675df2fc1dd3a53dfa6630dc1",
      "tree": "5b5b503666d882bbb4d805b7b20b4f3b11d2c40e",
      "parents": [
        "1b29b01887e6032dcaf818c14999c7a39593b4e7"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Mon May 12 21:20:42 2008 +0200"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Fri May 23 20:32:27 2008 +0200"
      },
      "message": "ftrace: add tracing of context switches\n\nThis patch adds context switch tracing, of the format of:\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                |||| /\n                |||||     delay\n    cmd     pid ||||| time  |      pid:prio:state\n       \\   /    |||||   \\   |      /\n  swapper-0     1d..3    137us+:  0:140:R --\u003e 2912:120\n     sshd-2912  1d..3    216us+:  2912:120:S --\u003e 0:140\n  swapper-0     1d..3    261us+:  0:140:R --\u003e 2912:120\n     bash-2920  0d..3    267us+:  2920:120:S --\u003e 0:140\n     sshd-2912  1d..3    330us!:  2912:120:S --\u003e 0:140\n  swapper-0     1d..3   2389us+:  0:140:R --\u003e 2847:120\n yum-upda-2847  1d..3   2411us!:  2847:120:S --\u003e 0:140\n  swapper-0     0d..3  11089us+:  0:140:R --\u003e 3139:120\n gdm-bina-3139  0d..3  11113us!:  3139:120:S --\u003e 0:140\n  swapper-0     1d..3 102328us+:  0:140:R --\u003e 2847:120\n yum-upda-2847  1d..3 102348us!:  2847:120:S --\u003e 0:140\n\n \"sched_switch\" is added to /debugfs/tracing/available_tracers\n\n[ Eugene Teo \u003ceugeneteo@kernel.sg: remove unused tracing_sched_switch_enabled ]\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n"
    },
    {
      "commit": "1b29b01887e6032dcaf818c14999c7a39593b4e7",
      "tree": "6bcef64d5a7822b0f259a52b852af8cade6b3468",
      "parents": [
        "bc0c38d139ec7fcd5c030aea16b008f3732e42ac"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Mon May 12 21:20:42 2008 +0200"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Fri May 23 20:32:13 2008 +0200"
      },
      "message": "ftrace: function tracer\n\nThis is a simple trace that uses the ftrace infrastructure. It is\ndesigned to be fast and small, and easy to use. It is useful to\nrecord things that happen over a very short period of time, and\nnot to analyze the system in general.\n\n Updates:\n\n  available_tracers\n     \"function\" is added to this file.\n\n  current_tracer\n    To enable the function tracer:\n\n      echo function \u003e /debugfs/tracing/current_tracer\n\n     To disable the tracer:\n\n       echo disable \u003e /debugfs/tracing/current_tracer\n\nThe output of the function_trace file is as follows\n\n  \"echo noverbose \u003e /debugfs/tracing/iter_ctrl\"\n\npreemption latency trace v1.1.5 on 2.6.24-rc7-tst\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n--------------------------------------------------------------------\n latency: 0 us, #419428/4361791, CPU#1 | (M:desktop VP:0, KP:0, SP:0 HP:0 #P:4)\n    -----------------\n    | task: -0 (uid:0 nice:0 policy:0 rt_prio:0)\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               |||| /\n               |||||     delay\n   cmd     pid ||||| time  |   caller\n      \\   /    |||||   \\   |   /\n swapper-0     0d.h. 1595128us+: set_normalized_timespec+0x8/0x2d \u003cc043841d\u003e (ktime_get_ts+0x4a/0x4e \u003cc04499d4\u003e)\n swapper-0     0d.h. 1595131us+: _spin_lock+0x8/0x18 \u003cc0630690\u003e (hrtimer_interrupt+0x6e/0x1b0 \u003cc0449c56\u003e)\n\nOr with verbose turned on:\n\n  \"echo verbose \u003e /debugfs/tracing/iter_ctrl\"\n\npreemption latency trace v1.1.5 on 2.6.24-rc7-tst\n--------------------------------------------------------------------\n latency: 0 us, #419428/4361791, CPU#1 | (M:desktop VP:0, KP:0, SP:0 HP:0 #P:4)\n    -----------------\n    | task: -0 (uid:0 nice:0 policy:0 rt_prio:0)\n    -----------------\n\n         swapper     0 0 9 00000000 00000000 [f3675f41] 1595.128ms (+0.003ms): set_normalized_timespec+0x8/0x2d \u003cc043841d\u003e (ktime_get_ts+0x4a/0x4e \u003cc04499d4\u003e)\n         swapper     0 0 9 00000000 00000001 [f3675f45] 1595.131ms (+0.003ms): _spin_lock+0x8/0x18 \u003cc0630690\u003e (hrtimer_interrupt+0x6e/0x1b0 \u003cc0449c56\u003e)\n         swapper     0 0 9 00000000 00000002 [f3675f48] 1595.135ms (+0.003ms): _spin_lock+0x8/0x18 \u003cc0630690\u003e (hrtimer_interrupt+0x6e/0x1b0 \u003cc0449c56\u003e)\n\nThe \"trace\" file is not affected by the verbose mode, but is by the symonly.\n\n echo \"nosymonly\" \u003e /debugfs/tracing/iter_ctrl\n\ntracer:\n[   81.479967] CPU 0: bash:3154 register_ftrace_function+0x5f/0x66 \u003cffffffff80337a4d\u003e \u003c-- _spin_unlock_irqrestore+0xe/0x5a \u003cffffffff8048cc8f\u003e\n[   81.479967] CPU 0: bash:3154 _spin_unlock_irqrestore+0x3e/0x5a \u003cffffffff8048ccbf\u003e \u003c-- sub_preempt_count+0xc/0x7a \u003cffffffff80233d7b\u003e\n[   81.479968] CPU 0: bash:3154 sub_preempt_count+0x30/0x7a \u003cffffffff80233d9f\u003e \u003c-- in_lock_functions+0x9/0x24 \u003cffffffff8025a75d\u003e\n[   81.479968] CPU 0: bash:3154 vfs_write+0x11d/0x155 \u003cffffffff8029a043\u003e \u003c-- dnotify_parent+0x12/0x78 \u003cffffffff802d54fb\u003e\n[   81.479968] CPU 0: bash:3154 dnotify_parent+0x2d/0x78 \u003cffffffff802d5516\u003e \u003c-- _spin_lock+0xe/0x70 \u003cffffffff8048c910\u003e\n[   81.479969] CPU 0: bash:3154 _spin_lock+0x1b/0x70 \u003cffffffff8048c91d\u003e \u003c-- add_preempt_count+0xe/0x77 \u003cffffffff80233df7\u003e\n[   81.479969] CPU 0: bash:3154 add_preempt_count+0x3e/0x77 \u003cffffffff80233e27\u003e \u003c-- in_lock_functions+0x9/0x24 \u003cffffffff8025a75d\u003e\n\n echo \"symonly\" \u003e /debugfs/tracing/iter_ctrl\n\ntracer:\n[   81.479913] CPU 0: bash:3154 register_ftrace_function+0x5f/0x66 \u003c-- _spin_unlock_irqrestore+0xe/0x5a\n[   81.479913] CPU 0: bash:3154 _spin_unlock_irqrestore+0x3e/0x5a \u003c-- sub_preempt_count+0xc/0x7a\n[   81.479913] CPU 0: bash:3154 sub_preempt_count+0x30/0x7a \u003c-- in_lock_functions+0x9/0x24\n[   81.479914] CPU 0: bash:3154 vfs_write+0x11d/0x155 \u003c-- dnotify_parent+0x12/0x78\n[   81.479914] CPU 0: bash:3154 dnotify_parent+0x2d/0x78 \u003c-- _spin_lock+0xe/0x70\n[   81.479914] CPU 0: bash:3154 _spin_lock+0x1b/0x70 \u003c-- add_preempt_count+0xe/0x77\n[   81.479914] CPU 0: bash:3154 add_preempt_count+0x3e/0x77 \u003c-- in_lock_functions+0x9/0x24\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Arnaldo Carvalho de Melo \u003cacme@ghostprotocols.net\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n"
    },
    {
      "commit": "bc0c38d139ec7fcd5c030aea16b008f3732e42ac",
      "tree": "adaaf5e2ca49bbd7025bc357f87df9cb47641022",
      "parents": [
        "16444a8a40d4c7b4f6de34af0cae1f76a4f6c901"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Mon May 12 21:20:42 2008 +0200"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Fri May 23 20:32:06 2008 +0200"
      },
      "message": "ftrace: latency tracer infrastructure\n\nThis patch adds the latency tracer infrastructure. This patch\ndoes not add anything that will select and turn it on, but will\nbe used by later patches.\n\nIf it were to be compiled, it would add the following files\nto the debugfs:\n\n The root tracing directory:\n\n  /debugfs/tracing/\n\nThis patch also adds the following files:\n\n  available_tracers\n     list of available tracers. Currently no tracers are\n     available. Looking into this file only shows\n     \"none\" which is used to unregister all tracers.\n\n  current_tracer\n     The trace that is currently active. Empty on start up.\n     To switch to a tracer simply echo one of the tracers that\n     are listed in available_tracers:\n\n   example: (used with later patches)\n\n      echo function \u003e /debugfs/tracing/current_tracer\n\n     To disable the tracer:\n\n       echo disable \u003e /debugfs/tracing/current_tracer\n\n  tracing_enabled\n     echoing \"1\" into this file starts the ftrace function tracing\n      (if sysctl kernel.ftrace_enabled\u003d1)\n     echoing \"0\" turns it off.\n\n  latency_trace\n      This file is readonly and holds the result of the trace.\n\n  trace\n      This file outputs a easier to read version of the trace.\n\n  iter_ctrl\n      Controls the way the output of traces look.\n      So far there\u0027s two controls:\n        echoing in \"symonly\" will only show the kallsyms variables\n            without the addresses (if kallsyms was configured)\n        echoing in \"verbose\" will change the output to show\n            a lot more data, but not very easy to understand by\n            humans.\n        echoing in \"nosymonly\" turns off symonly.\n        echoing in \"noverbose\" turns off verbose.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Arnaldo Carvalho de Melo \u003cacme@ghostprotocols.net\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n"
    },
    {
      "commit": "16444a8a40d4c7b4f6de34af0cae1f76a4f6c901",
      "tree": "9c290bcdbdc1ecf8f578c30b3b36914e14fdaacc",
      "parents": [
        "6e766410c4babd37bc7cd5e25009c179781742c8"
      ],
      "author": {
        "name": "Arnaldo Carvalho de Melo",
        "email": "acme@ghostprotocols.net",
        "time": "Mon May 12 21:20:42 2008 +0200"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Fri May 23 20:31:58 2008 +0200"
      },
      "message": "ftrace: add basic support for gcc profiler instrumentation\n\nIf CONFIG_FTRACE is selected and /proc/sys/kernel/ftrace_enabled is\nset to a non-zero value the ftrace routine will be called everytime\nwe enter a kernel function that is not marked with the \"notrace\"\nattribute.\n\nThe ftrace routine will then call a registered function if a function\nhappens to be registered.\n\n[ This code has been highly hacked by Steven Rostedt and Ingo Molnar,\n  so don\u0027t blame Arnaldo for all of this ;-) ]\n\nUpdate:\n  It is now possible to register more than one ftrace function.\n  If only one ftrace function is registered, that will be the\n  function that ftrace calls directly. If more than one function\n  is registered, then ftrace will call a function that will loop\n  through the functions to call.\n\nSigned-off-by: Arnaldo Carvalho de Melo \u003cacme@ghostprotocols.net\u003e\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n"
    }
  ]
}