)]}'
{
  "log": [
    {
      "commit": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7",
      "tree": "46619f5d62f0fbe9a6389ce20fd5ed92c25755e3",
      "parents": [
        "5685e0ff45f5df67e79e9b052b6ffd501ff38c11"
      ],
      "author": {
        "name": "Jiri Olsa",
        "email": "jolsa@redhat.com",
        "time": "Tue Aug 07 15:20:40 2012 +0200"
      },
      "committer": {
        "name": "Arnaldo Carvalho de Melo",
        "email": "acme@redhat.com",
        "time": "Fri Aug 10 12:17:58 2012 -0300"
      },
      "message": "perf: Add ability to attach user stack dump to sample\n\nIntroducing PERF_SAMPLE_STACK_USER sample type bit to trigger the dump\nof the user level stack on sample. The size of the dump is specified by\nsample_stack_user value.\n\nBeing able to dump parts of the user stack, starting from the stack\npointer, will be useful to make a post mortem dwarf CFI based stack\nunwinding.\n\nAdded HAVE_PERF_USER_STACK_DUMP config option to determine if the\narchitecture provides user stack dump on perf event samples.  This needs\naccess to the user stack pointer which is not unified across\narchitectures. Enabling this for x86 architecture.\n\nSigned-off-by: Jiri Olsa \u003cjolsa@redhat.com\u003e\nOriginal-patch-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: \"Frank Ch. Eigler\" \u003cfche@redhat.com\u003e\nCc: Arun Sharma \u003casharma@fb.com\u003e\nCc: Benjamin Redelings \u003cbenjamin.redelings@nescent.org\u003e\nCc: Corey Ashford \u003ccjashfor@linux.vnet.ibm.com\u003e\nCc: Cyrill Gorcunov \u003cgorcunov@openvz.org\u003e\nCc: Frank Ch. Eigler \u003cfche@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Masami Hiramatsu \u003cmasami.hiramatsu.pt@hitachi.com\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Robert Richter \u003crobert.richter@amd.com\u003e\nCc: Stephane Eranian \u003ceranian@google.com\u003e\nCc: Tom Zanussi \u003ctzanussi@gmail.com\u003e\nCc: Ulrich Drepper \u003cdrepper@gmail.com\u003e\nLink: http://lkml.kernel.org/r/1344345647-11536-6-git-send-email-jolsa@redhat.com\nSigned-off-by: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\n"
    },
    {
      "commit": "5685e0ff45f5df67e79e9b052b6ffd501ff38c11",
      "tree": "ead6bd92a49b42ec0ca5bfee467e03e37656a6f1",
      "parents": [
        "91d7753a45f8525dc75b6be01e427dc1c378dc16"
      ],
      "author": {
        "name": "Jiri Olsa",
        "email": "jolsa@redhat.com",
        "time": "Tue Aug 07 15:20:39 2012 +0200"
      },
      "committer": {
        "name": "Arnaldo Carvalho de Melo",
        "email": "acme@redhat.com",
        "time": "Fri Aug 10 12:16:22 2012 -0300"
      },
      "message": "perf: Add perf_output_skip function to skip bytes in sample\n\nIntroducing perf_output_skip function to be able to skip data within the\nperf ring buffer.\n\nWhen writing data into perf ring buffer we first reserve needed place in\nring buffer and then copy the actual data.\n\nThere\u0027s a possibility we won\u0027t be able to fill all the reserved size\nwith data, so we need a way to skip the remaining bytes.\n\nThis is going to be useful when storing the user stack dump, where we\nmight end up with less data than we originally requested.\n\nSigned-off-by: Jiri Olsa \u003cjolsa@redhat.com\u003e\nAcked-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: \"Frank Ch. Eigler\" \u003cfche@redhat.com\u003e\nCc: Arun Sharma \u003casharma@fb.com\u003e\nCc: Benjamin Redelings \u003cbenjamin.redelings@nescent.org\u003e\nCc: Corey Ashford \u003ccjashfor@linux.vnet.ibm.com\u003e\nCc: Cyrill Gorcunov \u003cgorcunov@openvz.org\u003e\nCc: Frank Ch. Eigler \u003cfche@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Masami Hiramatsu \u003cmasami.hiramatsu.pt@hitachi.com\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Robert Richter \u003crobert.richter@amd.com\u003e\nCc: Stephane Eranian \u003ceranian@google.com\u003e\nCc: Tom Zanussi \u003ctzanussi@gmail.com\u003e\nCc: Ulrich Drepper \u003cdrepper@gmail.com\u003e\nLink: http://lkml.kernel.org/r/1344345647-11536-5-git-send-email-jolsa@redhat.com\nSigned-off-by: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\n"
    },
    {
      "commit": "91d7753a45f8525dc75b6be01e427dc1c378dc16",
      "tree": "906a2c335d4403a39bd0f09ed3e338865d3df49b",
      "parents": [
        "4018994f3d8785275ef0e7391b75c3462c029e56"
      ],
      "author": {
        "name": "Frederic Weisbecker",
        "email": "fweisbec@gmail.com",
        "time": "Tue Aug 07 15:20:38 2012 +0200"
      },
      "committer": {
        "name": "Arnaldo Carvalho de Melo",
        "email": "acme@redhat.com",
        "time": "Fri Aug 10 11:44:06 2012 -0300"
      },
      "message": "perf: Factor __output_copy to be usable with specific copy function\n\nAdding a generic way to use __output_copy function with specific copy\nfunction via DEFINE_PERF_OUTPUT_COPY macro.\n\nUsing this to add new __output_copy_user function, that provides output\ncopy from user pointers. For x86 the copy_from_user_nmi function is used\nand __copy_from_user_inatomic for the rest of the architectures.\n\nThis new function will be used in user stack dump on sample, coming in\nnext patches.\n\nSigned-off-by: Jiri Olsa \u003cjolsa@redhat.com\u003e\nCc: \"Frank Ch. Eigler\" \u003cfche@redhat.com\u003e\nCc: Arun Sharma \u003casharma@fb.com\u003e\nCc: Benjamin Redelings \u003cbenjamin.redelings@nescent.org\u003e\nCc: Corey Ashford \u003ccjashfor@linux.vnet.ibm.com\u003e\nCc: Cyrill Gorcunov \u003cgorcunov@openvz.org\u003e\nCc: Frank Ch. Eigler \u003cfche@redhat.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Jiri Olsa \u003cjolsa@redhat.com\u003e\nCc: Masami Hiramatsu \u003cmasami.hiramatsu.pt@hitachi.com\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Robert Richter \u003crobert.richter@amd.com\u003e\nCc: Stephane Eranian \u003ceranian@google.com\u003e\nCc: Tom Zanussi \u003ctzanussi@gmail.com\u003e\nCc: Ulrich Drepper \u003cdrepper@gmail.com\u003e\nLink: http://lkml.kernel.org/r/1344345647-11536-4-git-send-email-jolsa@redhat.com\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nSigned-off-by: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\n"
    },
    {
      "commit": "e6dab5ffab59e910ec0e3355f4a6f29f7a7be474",
      "tree": "87acf0fb071b8d09794ac7d834cb256de030cceb",
      "parents": [
        "d07bdfd322d307789f15b427dbcc39257665356f"
      ],
      "author": {
        "name": "Andrew Vagin",
        "email": "avagin@openvz.org",
        "time": "Wed Jul 11 18:14:58 2012 +0400"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@kernel.org",
        "time": "Tue Jul 31 17:02:05 2012 +0200"
      },
      "message": "perf/trace: Add ability to set a target task for events\n\nA few events are interesting not only for a current task.\nFor example, sched_stat_* events are interesting for a task\nwhich wakes up. For this reason, it will be good if such\nevents will be delivered to a target task too.\n\nNow a target task can be set by using __perf_task().\n\nThe original idea and a draft patch belongs to Peter Zijlstra.\n\nI need these events for profiling sleep times. sched_switch is used for\ngetting callchains and sched_stat_* is used for getting time periods.\nThese events are combined in user space, then it can be analyzed by\nperf tools.\n\nInspired-by: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@ghostprotocols.net\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Arun Sharma \u003casharma@fb.com\u003e\nSigned-off-by: Andrew Vagin \u003cavagin@openvz.org\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/r/1342016098-213063-1-git-send-email-avagin@openvz.org\nSigned-off-by: Ingo Molnar \u003cmingo@kernel.org\u003e\n"
    },
    {
      "commit": "d6c1c49de577fa292af2449817364b7d89b574d8",
      "tree": "e97cf88a318f50eb23c18d790e8b0bcf7bb47169",
      "parents": [
        "9dde9dc0a81c7aeb863b35121d09011f09b4897c",
        "ddf6e0e50723b62ac76ed18eb53e9417c6eefba7"
      ],
      "author": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Tue Dec 06 06:42:35 2011 +0100"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Tue Dec 06 06:43:49 2011 +0100"
      },
      "message": "Merge branch \u0027perf/urgent\u0027 into perf/core\n\nMerge reason: Add these cherry-picked commits so that future changes\n              on perf/core don\u0027t conflict.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "10c6db110d0eb4466b59812c49088ab56218fc2e",
      "tree": "d1d4e8debcf7415df49ce691b4c3da7443919f11",
      "parents": [
        "16e5294e5f8303756a179cf218e37dfb9ed34417"
      ],
      "author": {
        "name": "Peter Zijlstra",
        "email": "a.p.zijlstra@chello.nl",
        "time": "Sat Nov 26 02:47:31 2011 +0100"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Mon Dec 05 09:33:03 2011 +0100"
      },
      "message": "perf: Fix loss of notification with multi-event\n\nWhen you do:\n        $ perf record -e cycles,cycles,cycles noploop 10\n\nYou expect about 10,000 samples for each event, i.e., 10s at\n1000samples/sec. However, this is not what\u0027s happening. You\nget much fewer samples, maybe 3700 samples/event:\n\n$ perf report -D | tail -15\nAggregated stats:\n           TOTAL events:      10998\n            MMAP events:         66\n            COMM events:          2\n          SAMPLE events:      10930\ncycles stats:\n           TOTAL events:       3644\n          SAMPLE events:       3644\ncycles stats:\n           TOTAL events:       3642\n          SAMPLE events:       3642\ncycles stats:\n           TOTAL events:       3644\n          SAMPLE events:       3644\n\nOn a Intel Nehalem or even AMD64, there are 4 counters capable\nof measuring cycles, so there is plenty of space to measure those\nevents without multiplexing (even with the NMI watchdog active).\nAnd even with multiplexing, we\u0027d expect roughly the same number\nof samples per event.\n\nThe root of the problem was that when the event that caused the buffer\nto become full was not the first event passed on the cmdline, the user\nnotification would get lost. The notification was sent to the file\ndescriptor of the overflowed event but the perf tool was not polling\non it.  The perf tool aggregates all samples into a single buffer,\ni.e., the buffer of the first event. Consequently, it assumes\nnotifications for any event will come via that descriptor.\n\nThe seemingly straight forward solution of moving the waitq into the\nringbuffer object doesn\u0027t work because of life-time issues. One could\nperf_event_set_output() on a fd that you\u0027re also blocking on and cause\nthe old rb object to be freed while its waitq would still be\nreferenced by the blocked thread -\u003e FAIL.\n\nTherefore link all events to the ringbuffer and broadcast the wakeup\nfrom the ringbuffer object to all possible events that could be waited\nupon. This is rather ugly, and we\u0027re open to better solutions but it\nworks for now.\n\nReported-by: Stephane Eranian \u003ceranian@google.com\u003e\nFinished-by: Stephane Eranian \u003ceranian@google.com\u003e\nReviewed-by: Stephane Eranian \u003ceranian@google.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/r/20111126014731.GA7030@quad\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "9251f904f95175b4a1d8cbc0449e748f9edd7629",
      "tree": "585b73028c0c6b955d1759faf8544870eae213f5",
      "parents": [
        "efc96737bd82b508794d2b28061a12af4a3f7766"
      ],
      "author": {
        "name": "Borislav Petkov",
        "email": "borislav.petkov@amd.com",
        "time": "Sun Oct 16 17:15:04 2011 +0200"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Mon Nov 14 13:31:26 2011 +0100"
      },
      "message": "perf: Carve out callchain functionality\n\nSplit the callchain code from the perf events core into\na new kernel/events/callchain.c file.\n\nThis simplifies a bit the big core.c\n\nSigned-off-by: Borislav Petkov \u003cborislav.petkov@amd.com\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: Stephane Eranian \u003ceranian@google.com\u003e\n[keep ctx recursion handling inline and use internal headers]\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nLink: http://lkml.kernel.org/r/1318778104-17152-1-git-send-email-fweisbec@gmail.com\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": "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"
    }
  ]
}