)]}' { "log": [ { "commit": "85bac32c4a52c592b857f2c360cc5ec93a097d70", "tree": "510e516dd5fa388cb9582a2f6b055f3725fbf2c1", "parents": [ "62f0b3eb5cb58931a02ee4e599e19c80a171e351" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Sep 04 14:24:40 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Sep 04 19:42:22 2009 -0400" }, "message": "ring-buffer: only enable ring_buffer_swap_cpu when needed\n\nSince the ability to swap the cpu buffers adds a small overhead to\nthe recording of a trace, we only want to add it when needed.\n\nOnly the irqsoff and preemptoff tracers use this feature, and both are\nnot recommended for production kernels. This patch disables its use\nwhen neither irqsoff nor preemptoff is configured.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "62f0b3eb5cb58931a02ee4e599e19c80a171e351", "tree": "344b3b8f55e6162f7fa08316aa6fde333b304c04", "parents": [ "e8165dbb03ed04d798163ee512074b9a9466a9c8" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Sep 04 14:11:34 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Sep 04 19:38:42 2009 -0400" }, "message": "ring-buffer: check for swapped buffers in start of committing\n\nBecause the irqsoff tracer can swap an internal CPU buffer, it is possible\nthat a swap happens between the start of the write and before the committing\nbit is set (the committing bit will disable swapping).\n\nThis patch adds a check for this and will fail the write if it detects it.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "e8165dbb03ed04d798163ee512074b9a9466a9c8", "tree": "a9e640253a8ce14bada6a83fe1d85ecd74968695", "parents": [ "659372d3e42a3e17a2e042d38a8bcdb94bfbe797" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Sep 03 19:13:05 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Sep 04 19:22:41 2009 -0400" }, "message": "tracing: report error in trace if we fail to swap latency buffer\n\nThe irqsoff tracer will fail to swap the cpu buffer with the max\nbuffer if it preempts a commit. Instead of ignoring this, this patch\nmakes the tracer report it if the last max latency failed due to preempting\na current commit.\n\nThe output of the latency tracer will look like this:\n\n # tracer: irqsoff\n #\n # irqsoff latency trace v1.1.5 on 2.6.31-rc5\n # --------------------------------------------------------------------\n # latency: 112 us, #1/1, CPU#1 | (M:preempt VP:0, KP:0, SP:0 HP:0 #P:4)\n # -----------------\n # | task: -4281 (uid:0 nice:0 policy:0 rt_prio:0)\n # -----------------\n # \u003d\u003e started at: save_args\n # \u003d\u003e ended at: __do_softirq\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-4281 1d.s6 265us : update_max_tr_single: Failed to swap buffers due to commit in progress\n\nNote the latency time and the functions that disabled the irqs or preemption\nwill still be listed.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "659372d3e42a3e17a2e042d38a8bcdb94bfbe797", "tree": "4c6195eb5e96569f902695f33babbea37e00bd41", "parents": [ "e77405ad80f53966524b5c31244e13fbbbecbd84" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Sep 03 19:11:07 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Sep 04 19:13:53 2009 -0400" }, "message": "tracing: add trace_array_printk for internal tracers to use\n\nThis patch adds a trace_array_printk to allow a tracer to use the\ntrace_printk on its own trace array.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "e77405ad80f53966524b5c31244e13fbbbecbd84", "tree": "65c05f9e1573e9958e52bb72655e00c8592aacd2", "parents": [ "f633903af2ceb0cec07d45e499a072b6593d0ed1" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Sep 02 14:17:06 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Sep 04 18:59:39 2009 -0400" }, "message": "tracing: pass around ring buffer instead of tracer\n\nThe latency tracers (irqsoff and wakeup) can swap trace buffers\non the fly. If an event is happening and has reserved data on one of\nthe buffers, and the latency tracer swaps the global buffer with the\nmax buffer, the result is that the event may commit the data to the\nwrong buffer.\n\nThis patch changes the API to the trace recording to be recieve the\nbuffer that was used to reserve a commit. Then this buffer can be passed\nin to the commit.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "f633903af2ceb0cec07d45e499a072b6593d0ed1", "tree": "9a484fa299142a00d0dbb5a97e1108031db96e70", "parents": [ "2f26ebd549b9ab55ac756b836ec759c11fe93f81" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Sep 04 12:35:16 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Sep 04 18:46:51 2009 -0400" }, "message": "tracing: make tracing_reset safe for external use\n\nReseting the trace buffer without first disabling the buffer and\nwaiting for any writers to complete, can corrupt the ring buffer.\n\nThis patch makes the external version of tracing_reset safe from\ncorruption by disabling the ring buffer and calling synchronize_sched.\n\nThis version can no longer be called from interrupt context. But all those\ncallers have been removed.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "2f26ebd549b9ab55ac756b836ec759c11fe93f81", "tree": "0f6fb154e2b5e9233a683b3267e5efe862a846f4", "parents": [ "76f0d07376388f32698ba51b6090a26b90c1342f" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Sep 01 11:06:29 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Sep 04 18:44:22 2009 -0400" }, "message": "tracing: use timestamp to determine start of latency traces\n\nCurrently the latency tracers reset the ring buffer. Unfortunately\nif a commit is in process (due to a trace event), this can corrupt\nthe ring buffer. When this happens, the ring buffer will detect\nthe corruption and then permanently disable the ring buffer.\n\nThe bug does not crash the system, but it does prevent further tracing\nafter the bug is hit.\n\nInstead of reseting the trace buffers, the timestamp of the start of\nthe trace is used instead. The buffers will still contain the previous\ndata, but the output will not count any data that is before the\ntimestamp of the trace.\n\nNote, this only affects the static trace output (trace) and not the\nruntime trace output (trace_pipe). The runtime trace output does not\nmake sense for the latency tracers anyway.\n\nReported-by: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "76f0d07376388f32698ba51b6090a26b90c1342f", "tree": "ea3a2576e7d2ae85d610aa088cb05986a13f03b1", "parents": [ "621968cdb2563b667d6ecb484ba91ef4c3a797b3" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Sep 04 12:12:39 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Sep 04 12:12:39 2009 -0400" }, "message": "tracing: remove users of tracing_reset\n\nThe function tracing_reset is deprecated for outside use of trace.c.\n\nThe new function to reset the the buffers is tracing_reset_online_cpus.\n\nThe reason for this is that resetting the buffers while the event\ntrace points are active can corrupt the buffers, because they may\nbe writing at the time of reset. The tracing_reset_online_cpus disables\nwrites and waits for current writers to finish.\n\nThis patch replaces all users of tracing_reset except for the latency\ntracers. Those changes require more work and will be removed in the\nfollowing patches.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "621968cdb2563b667d6ecb484ba91ef4c3a797b3", "tree": "a4b8e3ba1f55d6b725b37a4e42c2f376d6150cdc", "parents": [ "b8de7bd168fa54d059b16d3057b2f8a32cc5bdc3" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Sep 04 12:02:35 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Sep 04 12:02:35 2009 -0400" }, "message": "tracing: disable buffers and synchronize_sched before resetting\n\nResetting the ring buffers while traces are happening can corrupt\nthe ring buffer and disable it (no kernel crash to worry about).\n\nThe safest thing to do is disable the ring buffers, call synchronize_sched()\nto wait for all current writers to finish and then reset the buffer.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "b8de7bd168fa54d059b16d3057b2f8a32cc5bdc3", "tree": "3455ec59050f7f6d466a8c08275567079914d1b1", "parents": [ "8248ac052dfd1eb41819fbc0ca5c7a1667e7e70c" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon Aug 31 22:32:27 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Sep 04 11:52:24 2009 -0400" }, "message": "tracing: disable update max tracer while reading trace\n\nWhen reading the tracer from the trace file, updating the max latency\nmay corrupt the output. This patch disables the tracing of the max\nlatency while reading the trace file.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "8248ac052dfd1eb41819fbc0ca5c7a1667e7e70c", "tree": "d979964a23112b6266d26da19a572057e5060367", "parents": [ "077c5407cd3231cf13472623995f0dfdda510d62" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Sep 02 12:27:41 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Sep 04 11:48:12 2009 -0400" }, "message": "tracing: print out start and stop in latency traces\n\nDuring development of the tracer, we would copy information from\nthe live tracer to the max tracer with one memcpy. Since then we\nadded a generic ring buffer and we handle the copies differently now.\nUnfortunately, we never copied the critical section information, and\nwe lost the output:\n\n # \u003d\u003e started at: kmem_cache_alloc\n # \u003d\u003e ended at: kmem_cache_alloc\n\nThis patch adds back the critical start and end copying as well as\nremoves the unused \"trace_idx\" and \"overrun\" fields of the\ntrace_array_cpu structure.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "077c5407cd3231cf13472623995f0dfdda510d62", "tree": "843c729463363495f13333b2b55f3985ea75dfd8", "parents": [ "a1863c212b7517afc2b13e549552ac322fb44cab" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Sep 03 19:53:46 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Sep 04 11:46:25 2009 -0400" }, "message": "ring-buffer: disable all cpu buffers when one finds a problem\n\nCurrently the way RB_WARN_ON works, is to disable either the current\nCPU buffer or all CPU buffers, depending on whether a ring_buffer or\nring_buffer_per_cpu struct was passed into the macro.\n\nMost users of the RB_WARN_ON pass in the CPU buffer, so only the one\nCPU buffer gets disabled but the rest are still active. This may\nconfuse users even though a warning is sent to the console.\n\nThis patch changes the macro to disable the entire buffer even if\nthe CPU buffer is passed in.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "a1863c212b7517afc2b13e549552ac322fb44cab", "tree": "20ad746370b0d03950f23a349ebb07c913f99fd2", "parents": [ "dc892f7339af2d125478b800edb9081d6149665b" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Sep 03 10:23:58 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Sep 04 11:43:36 2009 -0400" }, "message": "ring-buffer: do not count discarded events\n\nThe latency tracers report the number of items in the trace buffer.\nThis uses the ring buffer data to calculate this. Because discarded\nevents are also counted, the numbers do not match the number of items\nthat are printed. The ring buffer also adds a \"padding\" item to the\nend of each buffer page which also gets counted as a discarded item.\n\nThis patch decrements the counter to the page entries on a discard.\nThis allows us to ignore discarded entries while reading the buffer.\n\nDecrementing the counter is still safe since it can only happen while\nthe committing flag is still set.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "dc892f7339af2d125478b800edb9081d6149665b", "tree": "3377439556b600c7bd3d53cbc0a893dd75bed634", "parents": [ "7e9391cfedce34eb9786bfa69d7d545dc93ef930" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Sep 03 15:33:41 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Sep 04 11:36:19 2009 -0400" }, "message": "ring-buffer: remove ring_buffer_event_discard\n\nThe function ring_buffer_event_discard can be used on any item in the\nring buffer, even after the item was committed. This function provides\nno safety nets and is very race prone.\n\nAn item may be safely removed from the ring buffer before it is committed\nwith the ring_buffer_discard_commit.\n\nSince there are currently no users of this function, and because this\nfunction is racey and error prone, this patch removes it altogether.\n\nNote, removing this function also allows the counters to ignore\nall discarded events (patches will follow).\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "7e9391cfedce34eb9786bfa69d7d545dc93ef930", "tree": "e3901037e9269cbf10bd2952835ebcc573e5741d", "parents": [ "1b959e18c4d6b4b981f887260b0f8e7939efa411" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Sep 03 10:02:09 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Sep 04 11:28:39 2009 -0400" }, "message": "ring-buffer: fix ring_buffer_read crossing pages\n\nWhen the ring buffer uses an iterator (static read mode, not on the\nfly reading), when it crosses a page boundery, it will skip the first\nentry on the next page. The reason is that the last entry of a page\nis usually padding if the page is not full. The padding will not be\nreturned to the user.\n\nThe problem arises on ring_buffer_read because it also increments the\niterator. Because both the read and peek use the same rb_iter_peek,\nthe rb_iter_peak will return the padding but also increment to the next\nitem. This is because the ring_buffer_peek will not incerment it\nitself.\n\nThe ring_buffer_read will increment it again and then call rb_iter_peek\nagain to get the next item. But that will be the second item, not the\nfirst one on the page.\n\nThe reason this never showed up before, is because the ftrace utility\nalways calls ring_buffer_peek first and only uses ring_buffer_read\nto increment to the next item. The ring_buffer_peek will always keep\nthe pointer to a valid item and not padding. This just hid the bug.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "1b959e18c4d6b4b981f887260b0f8e7939efa411", "tree": "3f7b9950cfe19742cfe04bc3feb11f7ad0a46e71", "parents": [ "98277991a99734f3a31d638afb47d4484ac73e43" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Sep 03 10:12:13 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Sep 04 11:25:27 2009 -0400" }, "message": "ring-buffer: remove unnecessary cpu_relax\n\nThe loops in the ring buffer that use cpu_relax are not dependent on\nother CPUs. They simply came across some padding in the ring buffer and\nare skipping over them. It is a normal loop and does not require a\ncpu_relax.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "98277991a99734f3a31d638afb47d4484ac73e43", "tree": "6688cb3c43562d6bd7b67961478ac337297064e5", "parents": [ "41b6a95d693319f804607b559893fbbd27498548" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Sep 02 10:56:15 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Sep 04 11:22:47 2009 -0400" }, "message": "ring-buffer: do not swap buffers during a commit\n\nIf a commit is taking place on a CPU ring buffer, do not allow it to\nbe swapped. Return -EBUSY when this is detected instead.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "41b6a95d693319f804607b559893fbbd27498548", "tree": "eafa22ab694eda7723cec115592a861867432a66", "parents": [ "8e254c1d183f0225ad21f9049641529e56cce4da" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Sep 02 09:59:48 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Sep 04 11:15:08 2009 -0400" }, "message": "ring-buffer: do not reset while in a commit\n\nThe callers of reset must ensure that no commit can be taking place\nat the time of the reset. If it does then we may corrupt the ring buffer.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "8e254c1d183f0225ad21f9049641529e56cce4da", "tree": "5b559726a38b60c6bc92b3c8667c676db1038701", "parents": [ "73222acf966792c7fda219724af963339be32e62" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Mon Aug 31 16:49:41 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Aug 31 10:58:08 2009 +0200" }, "message": "tracing/filters: Defer pred allocation\n\ninit_preds() allocates about 5392 bytes of memory (on x86_32) for\na TRACE_EVENT. With my config, at system boot total memory occupied\nis:\n\n\t5392 * (642 + 15) \u003d\u003d 3459KB\n\n642 \u003d\u003d cat available_events | wc -l\n15 \u003d\u003d number of dirs in events/ftrace\n\nThat\u0027s quite a lot, so we\u0027d better defer memory allocation util\nit\u0027s needed, that\u0027s when filter is used.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Tom Zanussi \u003ctzanussi@gmail.com\u003e\nCc: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nLKML-Reference: \u003c4A9B8EA5.6020700@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "73222acf966792c7fda219724af963339be32e62", "tree": "83109ded0bcfdc6a0ec5e8ea6becffd7ac41ec6a", "parents": [ "0dd7b74787eaf7858c6c573353a83c3e2766e674", "5d4a9dba2d7fbab69f00dedd430d1788834a055a" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Aug 29 13:06:05 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Aug 29 13:06:05 2009 +0200" }, "message": "Merge branch \u0027tip/tracing/core\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into tracing/core\n" }, { "commit": "5d4a9dba2d7fbab69f00dedd430d1788834a055a", "tree": "a57ec209fc1ac86d7acbd67164b068ecdadd6317", "parents": [ "c0729be99cb2b9d9749256254f1c40a801835896" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Aug 27 16:52:21 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Thu Aug 27 16:58:05 2009 -0400" }, "message": "tracing: only show tracing_max_latency when latency tracer configured\n\nThe tracing_max_latency file should only be present when one of the\nlatency tracers ({preempt|irqs}off, wakeup*) are enabled.\n\nThis patch also removes tracing_thresh when latency tracers are not\nenabled, as well as compiles out code that is only used for latency\ntracers.\n\nReported-by: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "c0729be99cb2b9d9749256254f1c40a801835896", "tree": "f7cb3d86ed28f2f42dcaa23035f2ecc30e363137", "parents": [ "6c347d43eea29221a8ebab9ff9cbe7a00cddac98" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Aug 26 22:23:52 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Thu Aug 27 16:58:03 2009 -0400" }, "message": "tracing: remove legacy select of MARKERS by context switch tracing\n\nThe context switch tracer was made before tracepoints were mature, and\nthe original version used markers. This is no longer true and this\npatch removes the select.\n\nReported-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "57421dbbdc932d65f0e6a41ebb027a2bfe3d0669", "tree": "0dec1f947cc6d3e9d5fe813c31cbaa960c9ed7b6", "parents": [ "a5a2f8e2acb991327952c45a13f5441fc09dffd6" ], "author": { "name": "Jason Baron", "email": "jbaron@redhat.com", "time": "Mon Aug 24 17:40:22 2009 -0400" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Aug 26 21:30:02 2009 +0200" }, "message": "tracing: Convert event tracing code to use NR_syscalls\n\nConvert the syscalls event tracing code to use NR_syscalls, instead of\nFTRACE_SYSCALL_MAX. NR_syscalls is standard accross most arches, and\nreduces code confusion/complexity.\n\nSigned-off-by: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nCc: Jiaying Zhang \u003cjiayingz@google.com\u003e\nCc: Martin Bligh \u003cmbligh@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Josh Stone \u003cjistone@redhat.com\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: H. Peter Anwin \u003chpa@zytor.com\u003e\nCc: Hendrik Brueckner \u003cbrueckner@linux.vnet.ibm.com\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nLKML-Reference: \u003c9b4f1a84ecae57cc6599412772efa36f0d2b815b.1251146513.git.jbaron@redhat.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "cc3b13c11c567c69a6356be98d0c03ff11541d5c", "tree": "7665852e54b8ad951bfdbd898922fa3c54567f43", "parents": [ "cd0980fc8add25e8ab12fcf1051c0f20cbc7c0c0" ], "author": { "name": "Hendrik Brueckner", "email": "brueckner@linux.vnet.ibm.com", "time": "Tue Aug 25 18:02:37 2009 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Aug 26 21:29:52 2009 +0200" }, "message": "tracing: Don\u0027t trace kernel thread syscalls\n\nKernel threads don\u0027t call syscalls using the sysenter/sysexit\npath. Instead they directly call the sys_* or do_* functions\nthat implement the syscalls inside the kernel.\n\nThe current syscall tracepoints only bind the sysenter/sysexit\npath, then it has no effect to trace the kernel thread calls\nto syscalls in that path.\nSetting the TIF_SYSCALL_TRACEPOINT flag is then useless for these.\n\nActually there is only one case when a kernel thread can reach the\nusual syscall exit tracing path: when we create a kernel thread, the\nchild comes to ret_from_fork and is the fork() return is then traced.\nBut this information alone is useless, then we don\u0027t want to set the\nTIF flags for these threads.\n\nKernel threads have task_struct-\u003emm set to NULL.\n(Thanks to Heiko for that hint ;-)\nThe idea is then to check the mm field in syscall_regfunc() and\nset the flag accordingly.\n\nSigned-off-by: Hendrik Brueckner \u003cbrueckner@linux.vnet.ibm.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nCc: Jiaying Zhang \u003cjiayingz@google.com\u003e\nCc: Martin Bligh \u003cmbligh@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Hendrik Brueckner \u003cbrueckner@linux.vnet.ibm.com\u003e\nLKML-Reference: \u003c20090825160237.GG4639@cetus.boeblingen.de.ibm.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "cd0980fc8add25e8ab12fcf1051c0f20cbc7c0c0", "tree": "307fe4d60c058c016c650366db2c2761b20cfd6d", "parents": [ "7515bf59f87f19b2a17972b74230d2f91756fe3c" ], "author": { "name": "Hendrik Brueckner", "email": "brueckner@linux.vnet.ibm.com", "time": "Tue Aug 25 14:50:27 2009 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Aug 26 21:29:48 2009 +0200" }, "message": "tracing: Check invalid syscall nr while tracing syscalls\n\nMost arch syscall_get_nr() implementations returns -1 if the syscall\nnumber is not valid. Accessing the bit field without a check might\nresult in a kernel oops (at least I saw it on s390 for ftrace selftest).\n\nBefore this change, this problem did not occur, because the invalid\nsyscall number (-1) caused syscall_nr_to_meta() to return NULL.\n\nThere are at least two scenarios where syscall_get_nr() can return -1:\n\n1. For example, ptrace stores an invalid syscall number, and thus,\n tracing code resets it.\n (see do_syscall_trace_enter in arch/s390/kernel/ptrace.c)\n\n2. The syscall_regfunc() (kernel/tracepoint.c) sets the\n TIF_SYSCALL_FTRACE (now: TIF_SYSCALL_TRACEPOINT) flag for all threads\n which include kernel threads.\n However, the ftrace selftest triggers a kernel oops when testing\n syscall trace points:\n - The kernel thread is started as ususal (do_fork()),\n - tracing code sets TIF_SYSCALL_FTRACE,\n - the ret_from_fork() function is triggered and starts\n\tftrace_syscall_exit() with an invalid syscall number.\n\nTo avoid these scenarios, I suggest to check the syscall_nr.\n\nFor instance, the ftrace selftest fails for s390 (with config option\nCONFIG_FTRACE_SYSCALLS set) and produces the following kernel oops.\n\nUnable to handle kernel pointer dereference at virtual kernel address 2000000000\n\nOops: 0038 [#1] PREEMPT SMP\nModules linked in:\nCPU: 0 Not tainted 2.6.31-rc6-next-20090819-dirty #18\nProcess kthreadd (pid: 818, task: 000000003ea207e8, ksp: 000000003e813eb8)\nKrnl PSW : 0704100180000000 00000000000ea54c (ftrace_syscall_exit+0x58/0xdc)\n R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:0 CC:1 PM:0 EA:3\nKrnl GPRS: 0000000000000000 00000000000e0000 ffffffffffffffff 20000000008c2650\n 0000000000000007 0000000000000000 0000000000000000 0000000000000000\n 0000000000000000 0000000000000000 ffffffffffffffff 000000003e813d78\n 000000003e813f58 0000000000505ba8 000000003e813e18 000000003e813d78\nKrnl Code: 00000000000ea540: e330d0000008 ag %r3,0(%r13)\n 00000000000ea546: a7480007 lhi %r4,7\n 00000000000ea54a: 1442 nr %r4,%r2\n \u003e00000000000ea54c: e31030000090 llgc %r1,0(%r3)\n 00000000000ea552: 5410d008 n %r1,8(%r13)\n 00000000000ea556: 8a104000 sra %r1,0(%r4)\n 00000000000ea55a: 5410d00c n %r1,12(%r13)\n 00000000000ea55e: 1211 ltr %r1,%r1\nCall Trace:\n([\u003c0000000000000000\u003e] 0x0)\n [\u003c000000000001fa22\u003e] do_syscall_trace_exit+0x132/0x18c\n [\u003c000000000002d0c4\u003e] sysc_return+0x0/0x8\n [\u003c000000000001c738\u003e] kernel_thread_starter+0x0/0xc\nLast Breaking-Event-Address:\n [\u003c00000000000ea51e\u003e] ftrace_syscall_exit+0x2a/0xdc\n\nSigned-off-by: Hendrik Brueckner \u003cbrueckner@linux.vnet.ibm.com\u003e\nAcked-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nCc: Jiaying Zhang \u003cjiayingz@google.com\u003e\nCc: Martin Bligh \u003cmbligh@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nLKML-Reference: \u003c20090825125027.GE4639@cetus.boeblingen.de.ibm.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "35dce1a99d010f3d738af4ce1b9b77302fdfe69c", "tree": "e34a37de965a79a2ae301de4d0557f500111dde6", "parents": [ "7cb2e3ee2aeec5b83ecadba929a2dc575dd4008f", "1c569f0264ea629c10bbab471dd0626ce4d3f19f" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Aug 26 08:29:02 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Aug 26 08:29:02 2009 +0200" }, "message": "Merge branch \u0027tracing/core\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into tracing/core\n\nConflicts:\n\tinclude/linux/tracepoint.h\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "5079f3261ffd7fe4a537679af695f2328943a245", "tree": "1f9ab5128f37c3628979496610bc862b4a321cd6", "parents": [ "87a342f5db69d53ea70493bb1ec69c9047677038" ], "author": { "name": "Zhaolei", "email": "zhaolei@cn.fujitsu.com", "time": "Tue Aug 25 16:12:56 2009 +0800" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed Aug 26 00:32:08 2009 -0400" }, "message": "ftrace: Move setting of clock-source out of options\n\nThere are many clock sources for the tracing system but we can only\nenable/disable one at a time with the trace/options file.\nWe can move the setting of clock-source out of options and add a separate\nfile for it:\n # cat trace_clock\n [local] global\n # echo global \u003e trace_clock\n # cat trace_clock\n local [global]\n\nSigned-off-by: Zhao Lei \u003czhaolei@cn.fujitsu.com\u003e\nLKML-Reference: \u003c4A939D08.6050604@cn.fujitsu.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "87a342f5db69d53ea70493bb1ec69c9047677038", "tree": "89ec97b3a32d6508d10f1598201e48a24c08c46e", "parents": [ "43b51ead3f752a3935116e5b1a94254b8573734f" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Fri Aug 07 10:33:43 2009 +0800" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed Aug 26 00:32:07 2009 -0400" }, "message": "tracing/filters: Support filtering for char * strings\n\nUsually, char * entries are dangerous in traces because the string\ncan be released whereas a pointer to it can still wait to be read from\nthe ring buffer.\n\nBut sometimes we can assume it\u0027s safe, like in case of RO data\n(eg: __file__ or __line__, used in bkl trace event). If these RO data\nare in a module and so is the call to the trace event, then it\u0027s safe,\nbecause the ring buffer will be flushed once this module get unloaded.\n\nTo allow char * to be treated as a string:\n\n\tTRACE_EVENT(...,\n\n\t\tTP_STRUCT__entry(\n\t\t\t__field_ext(const char *, name, FILTER_PTR_STRING)\n\t\t\t...\n\t\t)\n\n\t\t...\n\t);\n\nThe filtering will not dereference \"char *\" unless the developer\nexplicitly sets FILTER_PTR_STR in __field_ext.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nLKML-Reference: \u003c4A7B9287.90205@cn.fujitsu.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "43b51ead3f752a3935116e5b1a94254b8573734f", "tree": "5d9e88635c85ba7b1d273dea3c4d8d96e5000154", "parents": [ "aa38e9fc3ea804290efd3a39316d7f7e6c945800" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Fri Aug 07 10:33:22 2009 +0800" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed Aug 26 00:32:06 2009 -0400" }, "message": "tracing/filters: Add __field_ext() to TRACE_EVENT\n\nAdd __field_ext(), so a field can be assigned to a specific\nfilter_type, which matches a corresponding filter function.\n\nFor example, a later patch will allow this:\n\t__field_ext(const char *, str, FILTER_PTR_STR);\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nLKML-Reference: \u003c4A7B9272.6050709@cn.fujitsu.com\u003e\n\n[\n Fixed a -1 to FILTER_OTHER\n Forward ported to latest kernel.\n]\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "aa38e9fc3ea804290efd3a39316d7f7e6c945800", "tree": "8f9766b20c9006c1373f11c927fb46441e01df0f", "parents": [ "6591b493871cf9b17de2ba272edb8ab529a8058b" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Fri Aug 07 10:33:02 2009 +0800" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed Aug 26 00:32:06 2009 -0400" }, "message": "tracing/filters: Add filter_type to struct ftrace_event_field\n\nThe type of a field is stored as a string in @type, and here\nwe add @filter_type which is an enum value.\n\nThis prepares for later patches, so we can specifically assign\ndifferent @filter_type for the same @type.\n\nFor example normally a \"char *\" field is treated as a ptr,\nbut we may want it to be treated as a string when doing filting.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nLKML-Reference: \u003c4A7B925E.9030605@cn.fujitsu.com\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "1c569f0264ea629c10bbab471dd0626ce4d3f19f", "tree": "00fcbf85a7318c568f468518c3aa665a200c871e", "parents": [ "97419875865859fd2403e66266c02ce028e2f5ab" ], "author": { "name": "Josh Stone", "email": "jistone@redhat.com", "time": "Mon Aug 24 14:43:14 2009 -0700" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Aug 26 00:41:48 2009 +0200" }, "message": "tracing: Create generic syscall TRACE_EVENTs\n\nThis converts the syscall_enter/exit tracepoints into TRACE_EVENTs, so\nyou can have generic ftrace events that capture all system calls with\narguments and return values. These generic events are also renamed to\nsys_enter/exit, so they\u0027re more closely aligned to the specific\nsys_enter_foo events.\n\nSigned-off-by: Josh Stone \u003cjistone@redhat.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nCc: Jiaying Zhang \u003cjiayingz@google.com\u003e\nCc: Martin Bligh \u003cmbligh@google.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nLKML-Reference: \u003c1251150194-1713-5-git-send-email-jistone@redhat.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "97419875865859fd2403e66266c02ce028e2f5ab", "tree": "7df6e6df767e9c8ff538a50bcae17638a1c8da99", "parents": [ "3d27d8cb34fc156beb86de2338ca4029873a5cc6" ], "author": { "name": "Josh Stone", "email": "jistone@redhat.com", "time": "Mon Aug 24 14:43:13 2009 -0700" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Aug 26 00:36:41 2009 +0200" }, "message": "tracing: Move tracepoint callbacks from declaration to definition\n\nIt\u0027s not strictly correct for the tracepoint reg/unreg callbacks to\noccur when a client is hooking up, because the actual tracepoint may not\nbe present yet. This happens to be fine for syscall, since that\u0027s in\nthe core kernel, but it would cause problems for tracepoints defined in\na module that hasn\u0027t been loaded yet. It also means the reg/unreg has\nto be EXPORTed for any modules to use the tracepoint (as in SystemTap).\n\nThis patch removes DECLARE_TRACE_WITH_CALLBACK, and instead introduces\nDEFINE_TRACE_FN which stores the callbacks in struct tracepoint. The\ncallbacks are used now when the active state of the tracepoint changes\nin set_tracepoint \u0026 disable_tracepoint.\n\nThis also introduces TRACE_EVENT_FN, so ftrace events can also provide\nregistration callbacks if needed.\n\nSigned-off-by: Josh Stone \u003cjistone@redhat.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nCc: Jiaying Zhang \u003cjiayingz@google.com\u003e\nCc: Martin Bligh \u003cmbligh@google.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nLKML-Reference: \u003c1251150194-1713-4-git-send-email-jistone@redhat.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "3d27d8cb34fc156beb86de2338ca4029873a5cc6", "tree": "51be3d9b84fa6a7899b69c499cb7630ebca366b0", "parents": [ "667000011927b4fcc359beac4a2447889db6d349" ], "author": { "name": "Josh Stone", "email": "jistone@redhat.com", "time": "Mon Aug 24 14:43:12 2009 -0700" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Aug 26 00:24:19 2009 +0200" }, "message": "tracing: Make syscall tracepoints conditional\n\nThe syscall enter/exit tracepoints are only supported on archs that\nHAVE_SYSCALL_TRACEPOINTS, so the declarations should be #ifdef\u0027ed.\nAlso, the definition of syscall_regfunc and syscall_unregfunc should\ndepend on this same config, rather than the ftrace-specific one.\n\nSigned-off-by: Josh Stone \u003cjistone@redhat.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nCc: Jiaying Zhang \u003cjiayingz@google.com\u003e\nCc: Martin Bligh \u003cmbligh@google.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nLKML-Reference: \u003c1251150194-1713-3-git-send-email-jistone@redhat.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "667000011927b4fcc359beac4a2447889db6d349", "tree": "d21f0bce17e08479885818792529d3cadf7b8003", "parents": [ "d88cb582325830698de5071fa8b8c9e933dbbcad" ], "author": { "name": "Josh Stone", "email": "jistone@redhat.com", "time": "Mon Aug 24 14:43:11 2009 -0700" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Aug 26 00:17:35 2009 +0200" }, "message": "tracing: Rename FTRACE_SYSCALLS for tracepoints\n\ns/HAVE_FTRACE_SYSCALLS/HAVE_SYSCALL_TRACEPOINTS/g\ns/TIF_SYSCALL_FTRACE/TIF_SYSCALL_TRACEPOINT/g\n\nThe syscall enter/exit tracing is no longer specific to just ftrace, so\nthey now have names that reflect their tie to tracepoints instead.\n\nSigned-off-by: Josh Stone \u003cjistone@redhat.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nCc: Jiaying Zhang \u003cjiayingz@google.com\u003e\nCc: Martin Bligh \u003cmbligh@google.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nLKML-Reference: \u003c1251150194-1713-2-git-send-email-jistone@redhat.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "d88cb582325830698de5071fa8b8c9e933dbbcad", "tree": "257eea90a88b49720addf7035855eb3dfe0a88e4", "parents": [ "4539f07701b3f743580d19dc5d655fb8d21b0a3c" ], "author": { "name": "Anirban Sinha", "email": "ASinha@zeugmasystems.com", "time": "Tue Aug 25 07:00:02 2009 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Aug 25 16:15:12 2009 +0200" }, "message": "tracing: Eliminate code duplication in kernel/tracepoint.c\n\nSigned-off-by: Anirban Sinha \u003casinha@zeugmasystems.com\u003e\nReviewed-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: \"Oleg Nesterov\" \u003coleg@tv-sign.ru\u003e\nLKML-Reference: \u003cDDFD17CC94A9BD49A82147DDF7D545C501EA9047@exchange.ZeugmaSystems.local\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "4539f07701b3f743580d19dc5d655fb8d21b0a3c", "tree": "15bb4504cda47f4e5281831eccd91b51dcd4b095", "parents": [ "540b7b8d65575c80162f2a0f38e1d313c92a6042" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Thu Aug 20 16:13:35 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Aug 20 12:12:22 2009 +0200" }, "message": "tracing/syscalls: Fix the output of syscalls with no arguments\n\nBefore:\n\n # echo 1 \u003e events/syscalls/sys_enter_sync/enable\n # cat events/syscalls/sys_enter_sync/format\n ...\n field:int nr; offset:12; size:4;\n\n print fmt: \"# sync\n # cat trace\n ...\n sync-8950 [000] 2366.087670: sys_sync(\n\nAfter:\n\n # echo 1 \u003e events/syscalls/sys_enter_sync/enable\n # cat events/syscalls/sys_enter_sync/format\n ...\n field:int nr; offset:12; size:4;\n\n print fmt: \"\"\n # sync\n # cat trace\n sync-2134 [001] 136.780735: sys_sync()\n\nReported-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nLKML-Reference: \u003c4A8D05AF.20103@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "540b7b8d65575c80162f2a0f38e1d313c92a6042", "tree": "664bdd01ce8fce990e634a304f9b3ab51e50970c", "parents": [ "e647d6b314266adb904d4b84973eda0afa856946" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Wed Aug 19 15:54:51 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Aug 19 15:02:24 2009 +0200" }, "message": "tracing/syscalls: Add filtering support\n\nAdd filtering support for syscall events:\n\n # echo \u0027mode \u003d\u003d 0666\u0027 \u003e events/syscalls/sys_enter_open\n # echo \u0027ret \u003d\u003d 0\u0027 \u003e events/syscalls/sys_exit_open\n # echo 1 \u003e events/syscalls/sys_enter_open\n # echo 1 \u003e events/syscalls/sys_exit_open\n # cat trace\n ...\n modprobe-3084 [001] 117.463140: sys_open(filename: 917d3e8, flags: 0, mode: 1b6)\n modprobe-3084 [001] 117.463176: sys_open -\u003e 0x0\n less-3086 [001] 117.510455: sys_open(filename: 9c6bdb8, flags: 8000, mode: 1b6)\n sendmail-2574 [001] 122.145840: sys_open(filename: b807a365, flags: 0, mode: 1b6)\n ...\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c4A8BAFCB.1040006@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "e647d6b314266adb904d4b84973eda0afa856946", "tree": "e4f18b57d37a25910b3d19b6c2461f87db0084a3", "parents": [ "14be96c9716cb8c46dca94bd890defd7856e0734" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Wed Aug 19 15:54:32 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Aug 19 15:02:24 2009 +0200" }, "message": "tracing/events: Add trace_define_common_fields()\n\nExtract duplicate code. Also prepare for the later patch.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c4A8BAFB8.1010304@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "14be96c9716cb8c46dca94bd890defd7856e0734", "tree": "d9a064f3191182f16ff01176b17c4dda073d8dc8", "parents": [ "10a5b66f625904ad5a2867cf7a28073e1236ff32" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Wed Aug 19 15:53:52 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Aug 19 15:02:23 2009 +0200" }, "message": "tracing/events: Add ftrace_event_call param to define_fields()\n\nThis parameter is needed by syscall events to add define_fields()\nhandler.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c4A8BAF90.6060801@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "10a5b66f625904ad5a2867cf7a28073e1236ff32", "tree": "165c3d0f480e2862d3d97f3f3ceecad9c1cdc8b8", "parents": [ "e6971969c331caa5c3c88cbd1be4f465b3355452" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Wed Aug 19 15:53:05 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Aug 19 15:02:23 2009 +0200" }, "message": "tracing/syscalls: Add fields format for exit events\n\nAdd \"format\" file for syscall exit events:\n\n # cat events/syscalls/sys_exit_open/format\n name: sys_exit_open\n ID: 344\n format:\n field:unsigned short common_type; offset:0; size:2;\n field:unsigned char common_flags; offset:2; size:1;\n field:unsigned char common_preempt_count; offset:3; size:1;\n field:int common_pid; offset:4; size:4;\n field:int common_tgid; offset:8; size:4;\n\n field:int nr; offset:12; size:4;\n field:unsigned long ret; offset:16; size:4;\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c4A8BAF61.3060307@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "e6971969c331caa5c3c88cbd1be4f465b3355452", "tree": "0d66906d1882566257db824b38ab905d8a0dc721", "parents": [ "5e9ad7df9fd056f1071af8aa91034a1c3170257d" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Wed Aug 19 15:52:25 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Aug 19 15:02:22 2009 +0200" }, "message": "tracing/syscalls: Fix fields format for enter events\n\nThe \"format\" file of a trace event is originally for parsers to\nparse ftrace binary output.\n\nBut the \"format\" file of a syscall event can only be used by\nperfcounter, because it describes the format of struct\nsyscall_enter_record not struct syscall_trace_enter.\n\nTo fix this, we remove struct syscall_enter_record, and then\nstruct syscall_trace_enter will be used by both perf profile\nand ftrace.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c4A8BAF39.1030404@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "3be04b471b95b870bd129a138463756629e86f3f", "tree": "056a6f2ecf5be83c0441ebe9357f16bc1f91cd0c", "parents": [ "2fc5f0cff4cf1c4cd336d0f61f11bca6eeee1d84" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Mon Aug 17 16:54:03 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Aug 17 11:25:10 2009 +0200" }, "message": "ftrace: Simplify seqfile code\n\nUse seq_release_private().\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nLKML-Reference: \u003c4A891AAB.8090701@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "2fc5f0cff4cf1c4cd336d0f61f11bca6eeee1d84", "tree": "a86845315b93dbdffc2536f8089ee3169cec9113", "parents": [ "97d53202a5670a08b79c8ef2e4fff1c1ee21317c" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Mon Aug 17 16:53:37 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Aug 17 11:25:09 2009 +0200" }, "message": "trace_stack: Simplify seqfile code\n\nExtract duplicate code in t_start() and t_next().\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c4A891A91.4030602@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "97d53202a5670a08b79c8ef2e4fff1c1ee21317c", "tree": "5ba925559a3031a833c5803d05a0a43e13ea1866", "parents": [ "ba8b3a40ba7e06d00c27508f090803af90e8dbbf" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Mon Aug 17 16:52:53 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Aug 17 11:25:09 2009 +0200" }, "message": "trace_stat: Fix missing entry in stat file\n\nOne entry is missing in the output of a stat file.\n\nThe cause is, when stat_seq_start() is called the 2nd time, we\nshould start from the (pos-1)th elem in the rbtree but not pos,\nbecause pos \u003d\u003d 0 is the header.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c4A891A65.70009@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "ba8b3a40ba7e06d00c27508f090803af90e8dbbf", "tree": "7805446c5a6a945dddb872a9b84c3ceee30d1583", "parents": [ "7ead8b8313d92b3a69a1a61b0dcbc4cd66c960dc" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Mon Aug 17 16:55:18 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Aug 17 11:25:09 2009 +0200" }, "message": "tracing/syscalls: Fix to print parameter types\n\nWhen syscall tracing was implemented as a tracer,\n\"syscall_arg_type\" trace option could be set to enable the\ndisplay of syscall parameter types.\n\nNow this option is gone since it\u0027s no longer a tracer, but the\ncode is still there but dead.\n\nSo we remove dead code and re-enable the printing of paramete\ntypes via the verbose option:\n\n # echo verbose \u003e trace_options\n # echo syscalls \u003e set_event\n # cat trace\n\t...\n bash-3331 [000] 95.348937: sys_fcntl64 -\u003e 0x1\n bash-3331 [000] 95.348942: sys_close(unsigned int fd: a)\n\t...\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nLKML-Reference: \u003c4A891AF6.5050102@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "7ead8b8313d92b3a69a1a61b0dcbc4cd66c960dc", "tree": "614759ec1b24ea9f6d1409b866c80df0611e5d6b", "parents": [ "60d970c254b95ec7a0fc4c590b510253987b64a0" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Mon Aug 17 16:56:28 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Aug 17 11:25:08 2009 +0200" }, "message": "tracing/events: Add module tracepoints\n\nAdd trace points to trace module_load, module_free, module_get,\nmodule_put and module_request, and use trace_event facility to\nget the trace output.\n\nHere\u0027s the sample output:\n\n TASK-PID CPU# TIMESTAMP FUNCTION\n | | | | |\n \u003c...\u003e-42 [000] 1.758380: module_request: fb0 wait\u003d1 call_site\u003dfb_open\n ...\n \u003c...\u003e-60 [000] 3.269403: module_load: scsi_wait_scan\n \u003c...\u003e-60 [000] 3.269432: module_put: scsi_wait_scan call_site\u003dsys_init_module refcnt\u003d0\n \u003c...\u003e-61 [001] 3.273168: module_free: scsi_wait_scan\n ...\n \u003c...\u003e-1021 [000] 13.836081: module_load: sunrpc\n \u003c...\u003e-1021 [000] 13.840589: module_put: sunrpc call_site\u003dsys_init_module refcnt\u003d-1\n \u003c...\u003e-1027 [000] 13.848098: module_get: sunrpc call_site\u003dtry_module_get refcnt\u003d0\n \u003c...\u003e-1027 [000] 13.848308: module_get: sunrpc call_site\u003dget_filesystem refcnt\u003d1\n \u003c...\u003e-1027 [000] 13.848692: module_put: sunrpc call_site\u003dput_filesystem refcnt\u003d0\n ...\n modprobe-2587 [001] 1088.437213: module_load: trace_events_sample F\n modprobe-2587 [001] 1088.437786: module_put: trace_events_sample call_site\u003dsys_init_module refcnt\u003d0\n\nNote:\n\n- the taints flag can be \u0027F\u0027, \u0027C\u0027 and/or \u0027P\u0027 if mod-\u003etaints !\u003d 0\n\n- the module refcnt is percpu, so it can be negative in a\n specific cpu\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nAcked-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nLKML-Reference: \u003c4A891B3C.5030608@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "60d970c254b95ec7a0fc4c590b510253987b64a0", "tree": "3f99d03bf8af498ef57376f65b7c18b9e18b098a", "parents": [ "19007a67a64f9b3cbbd7024f972654ebf14daade" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Aug 13 23:37:26 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Aug 13 23:38:20 2009 +0200" }, "message": "tracing: Fix syscall tracing on !HAVE_FTRACE_SYSCALLS architectures\n\nThe new syscall_regfunc()/unregfunc() functions rely on\nthe existence of TIF_SYSCALL_FTRACE - but that TIF flag\nis only offered by HAVE_FTRACE_SYSCALLS.\n\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nLKML-Reference: \u003cnew-submission\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "19007a67a64f9b3cbbd7024f972654ebf14daade", "tree": "a993570902eb009cf6bdbc5bccfa485ff6ec960a", "parents": [ "dc4ddb4c0b7348f1c9759ae8a9e7d734dc1cda82" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Aug 11 20:22:53 2009 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Aug 11 20:35:30 2009 +0200" }, "message": "tracing: Support for syscall events raw records in perfcounters\n\nThis bring the support for raw syscall events in perfcounters.\nThe arguments or exit value are saved as a raw sample using\nthe PERF_SAMPLE_RAW attribute in a perf counter.\n\nExample (for now you must explicitly set the PERF_SAMPLE_RAW flag\nin perf record):\n\nperf record -e syscalls:sys_enter_open -f -F 1 -a\nperf report -D\n\n\t0x2cbb8 [0x50]: event: 9\n\t.\n\t. ... raw event: size 80 bytes\n\t. 0000: 09 00 00 00 02 00 50 00 20 e9 39 ab 0a 7f 00 00 ......P. .9....\n\t. 0010: bc 14 00 00 bc 14 00 00 01 00 00 00 00 00 00 00 ...............\n\t. 0020: 2c 00 00 00 15 01 01 00 bc 14 00 00 bc 14 00 00 ,..............\n ^ ^ ^ ^ ^ ^ ^ ..........................\n Event Size struct trace_entry\n\n\t. 0030: 00 00 00 00 46 98 43 02 00 00 00 00 80 08 00 00 ....F.C........\n ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^\n ptr to file name open flags\n\n\t. 0040: 00 00 00 00 02 00 00 00 00 00 00 00 00 00 00 00 ...............\n ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^\n\t. open mode padding\n\n\t0x2cbb8 [0x50]: PERF_EVENT_SAMPLE (IP, 2): 5308: 0x7f0aab39e920 period: 1\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nCc: Jiaying Zhang \u003cjiayingz@google.com\u003e\nCc: Martin Bligh \u003cmbligh@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\n" }, { "commit": "dc4ddb4c0b7348f1c9759ae8a9e7d734dc1cda82", "tree": "00c0df5d9b7809a0c0cf89713c55c7e04ce6c248", "parents": [ "e8f9f4d79a677f55c8ec3acbe87b33a87e2df0de" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Aug 11 19:03:54 2009 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Aug 11 20:35:30 2009 +0200" }, "message": "tracing: Add fields format definition for syscall events\n\nDefine the format of the syscall trace fields to parse the binary\nvalues from a raw trace using the syscall events \"format\" file.\n\nThis is defined dynamically using the syscalls metadata.\nIt prepares the export of syscall event raw records to perf\ncounters.\n\nExample:\n\n$ cat /debug/tracing/events/syscalls/sys_enter_sched_getparam/format\nname: sys_enter_sched_getparam\nID: 39\nformat:\n\tfield:unsigned short common_type;\toffset:0;\tsize:2;\n\tfield:unsigned char common_flags;\toffset:2;\tsize:1;\n\tfield:unsigned char common_preempt_count;\toffset:3;\tsize:1;\n\tfield:int common_pid;\toffset:4;\tsize:4;\n\tfield:int common_tgid;\toffset:8;\tsize:4;\n\n\tfield:pid_t pid;\toffset:12;\tsize:8;\n\tfield:struct sched_param * param;\toffset:20;\tsize:8;\n\nprint fmt: \"pid: 0x%08lx, param: 0x%08lx\", ((unsigned long)(REC-\u003epid)), ((unsigned long)(REC-\u003eparam))\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nCc: Jiaying Zhang \u003cjiayingz@google.com\u003e\nCc: Martin Bligh \u003cmbligh@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\n" }, { "commit": "e8f9f4d79a677f55c8ec3acbe87b33a87e2df0de", "tree": "3b20dcf2c7b49fe23e0641805ca7aaac921bc46d", "parents": [ "0ac676fb50f5f8a22e5e80afc40bf38e31b77c00" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Aug 11 17:42:52 2009 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Aug 11 20:35:29 2009 +0200" }, "message": "tracing: Add ftrace event call parameter to its field descriptor handler\n\nAdd the struct ftrace_event_call as a parameter of its show_format()\ncallback. This way we can use it from the syscall trace events to\nretrieve the syscall name from the ftrace event call parameter and\ndescribe its fields using the syscalls metadata.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nCc: Jiaying Zhang \u003cjiayingz@google.com\u003e\nCc: Martin Bligh \u003cmbligh@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\n" }, { "commit": "f4b5ffccc83c82947f5d9f15d6f1b6edb1b71cd7", "tree": "06ec4a005b40ba0b6039e6c3425dd186486b8c6f", "parents": [ "64c12e0444fcc6b75eb49144ba46d43dbdc6bc8f" ], "author": { "name": "Jason Baron", "email": "jbaron@redhat.com", "time": "Mon Aug 10 16:53:02 2009 -0400" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Aug 11 20:35:29 2009 +0200" }, "message": "tracing: Add perf counter support for syscalls tracing\n\nThe perf counter support is automated for usual trace events. But we\nhave to define specific callbacks for this to handle syscalls trace\nevents\n\nMake \u0027perf stat -e syscalls:sys_enter_blah\u0027 work with syscall style\ntracepoints.\n\nSigned-off-by: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nCc: Jiaying Zhang \u003cjiayingz@google.com\u003e\nCc: Martin Bligh \u003cmbligh@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "64c12e0444fcc6b75eb49144ba46d43dbdc6bc8f", "tree": "8fe7b546fe787061fca8f97ed2051f40f9b16a57", "parents": [ "fb34a08c3469b2be9eae626ccb96476b4687b810" ], "author": { "name": "Jason Baron", "email": "jbaron@redhat.com", "time": "Mon Aug 10 16:52:53 2009 -0400" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Aug 11 20:35:28 2009 +0200" }, "message": "tracing: Add individual syscalls tracepoint id support\n\nThe current state of syscalls tracepoints generates only one event id\nfor every syscall events.\n\nThis patch associates an id with each syscall trace event, so that we\ncan identify each syscall trace event using the \u0027perf\u0027 tool.\n\nSigned-off-by: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nCc: Jiaying Zhang \u003cjiayingz@google.com\u003e\nCc: Martin Bligh \u003cmbligh@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "fb34a08c3469b2be9eae626ccb96476b4687b810", "tree": "f308cd109de2c967a1f8bd485eb9c398992a9414", "parents": [ "69fd4f0eb2ececbf8ade55e31a933e174965745e" ], "author": { "name": "Jason Baron", "email": "jbaron@redhat.com", "time": "Mon Aug 10 16:52:47 2009 -0400" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Aug 11 20:35:28 2009 +0200" }, "message": "tracing: Add trace events for each syscall entry/exit\n\nLayer Frederic\u0027s syscall tracer on tracepoints. We create trace events\nvia hooking into the SYSCALL_DEFINE macros. This allows us to\nindividually toggle syscall entry and exit points on/off.\n\nSigned-off-by: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nCc: Jiaying Zhang \u003cjiayingz@google.com\u003e\nCc: Martin Bligh \u003cmbligh@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "69fd4f0eb2ececbf8ade55e31a933e174965745e", "tree": "bebe7f5b88b8e2c6c240390e4e546d0c3522e79b", "parents": [ "f744bd576a827c5b02e756b81fc2578edf8179b8" ], "author": { "name": "Jason Baron", "email": "jbaron@redhat.com", "time": "Mon Aug 10 16:52:44 2009 -0400" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Aug 11 20:35:27 2009 +0200" }, "message": "tracing: Add ftrace_event_call void * \u0027data\u0027 field\n\nadd an optional void * pointer to \u0027ftrace_event_call\u0027 that is\npassed in for regfunc and unregfunc.\n\nThis prepares for syscall tracepoints creation by passing the name of\nthe syscall we want to trace and then retrieve its number through our\narch syscall table.\n\nSigned-off-by: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nCc: Jiaying Zhang \u003cjiayingz@google.com\u003e\nCc: Martin Bligh \u003cmbligh@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "f744bd576a827c5b02e756b81fc2578edf8179b8", "tree": "d2e1242d87953476ee6cacb7e34e0f791b641c02", "parents": [ "9daa77e2e9a6b8b859660d5e24d0f8cd77c2af39" ], "author": { "name": "Jason Baron", "email": "jbaron@redhat.com", "time": "Mon Aug 10 16:52:39 2009 -0400" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Aug 11 20:35:27 2009 +0200" }, "message": "tracing: Raw_init() bailout in trace event register fail case\n\nAllow the return value of raw_init() trace event callback to bail us out\nof creating a trace event file, in case we fail to register our\nevent.\n\nAlso, we plan to return -ENOSYS for syscall events that don\u0027t match any\nsyscalls listed in our arch tracing syscall table, we don\u0027t want to warn\nin that case, we just want this event to be invisible in debugfs and\nignored.\n\nSigned-off-by: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nCc: Jiaying Zhang \u003cjiayingz@google.com\u003e\nCc: Martin Bligh \u003cmbligh@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "a871bd33a6c0bc86fb47cd02ea2650dd43d3d95f", "tree": "b5720cdb3168ba0894b4bd2c1acc004cb19a692c", "parents": [ "63fbdab3157b72467013fe4dcf88c85e45280ef7" ], "author": { "name": "Jason Baron", "email": "jbaron@redhat.com", "time": "Mon Aug 10 16:52:31 2009 -0400" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Aug 11 20:35:26 2009 +0200" }, "message": "tracing: Add syscall tracepoints\n\nadd two tracepoints in syscall exit and entry path, conditioned on\nTIF_SYSCALL_FTRACE. Supports the syscall trace event code.\n\nSigned-off-by: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nCc: Jiaying Zhang \u003cjiayingz@google.com\u003e\nCc: Martin Bligh \u003cmbligh@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "066e0378c23f0a3db730893f6a041e4a3922a385", "tree": "be402805c83dfc6547d4eb1e8b4129dcec1d9831", "parents": [ "eeac19a7efa150231e4a6bb110d6f27500bcc8ce" ], "author": { "name": "Jason Baron", "email": "jbaron@redhat.com", "time": "Mon Aug 10 16:52:23 2009 -0400" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Aug 11 20:35:26 2009 +0200" }, "message": "tracing: Call arch_init_ftrace_syscalls at boot\n\nCall arch_init_ftrace_syscalls at boot, so we can determine early the\nset of syscalls for the syscall trace events.\n\nSigned-off-by: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nCc: Jiaying Zhang \u003cjiayingz@google.com\u003e\nCc: Martin Bligh \u003cmbligh@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "7770841e63730d62928b0879498064e9614b2ce0", "tree": "6bc12618ec2cdbc6e5294e6b967652eaf7c3c9d6", "parents": [ "89034bc2c7b839702c00a704e79d112737f98be0" ], "author": { "name": "Zhaolei", "email": "zhaolei@cn.fujitsu.com", "time": "Fri Aug 07 18:53:21 2009 +0800" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Aug 11 20:35:25 2009 +0200" }, "message": "tracing: Rename set_tracer_flags()\u0027s local variable trace_flags\n\nset_tracer_flags() have a local variable named trace_flags which has\nthe same name than a global one in the same scope.\nThis leads to confusion, using tracer_flags should be better by its\nmeaning.\n\nChangelog:\nv1-\u003ev2: Simplified another patch in this patchset, no change in this\n patch.\n\nSigned-off-by: Zhao Lei \u003czhaolei@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "89034bc2c7b839702c00a704e79d112737f98be0", "tree": "e65b1f3d4c751baa840efc81bc4734f089379eb3", "parents": [ "fb82ad719831db58e9baa4c67015aae3fe27e7e3", "85dfd81dc57e8183a277ddd7a56aa65c96f3f487" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Aug 11 14:19:09 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Aug 11 14:19:09 2009 +0200" }, "message": "Merge branch \u0027linus\u0027 into tracing/core\n\nConflicts:\n\tkernel/trace/trace_events_filter.c\n\nWe use the tracing/core version.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "d00aa6695b67a31be2ce5f7464da32c20cb50699", "tree": "4e4a2bbd1ab710ddca3bd1a611a6c3e9a00f52f9", "parents": [ "cec36911b5fa4ac342f6de856b12a9f71f84e6e5", "1853db0e02ae4088f102b0d8e59e83dc98f93f03" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Aug 10 11:48:51 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Aug 10 11:48:51 2009 -0700" }, "message": "Merge branch \u0027perfcounters-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027perfcounters-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (27 commits)\n perf_counter: Zero dead bytes from ftrace raw samples size alignment\n perf_counter: Subtract the buffer size field from the event record size\n perf_counter: Require CAP_SYS_ADMIN for raw tracepoint data\n perf_counter: Correct PERF_SAMPLE_RAW output\n perf tools: callchain: Fix bad rounding of minimum rate\n perf_counter tools: Fix libbfd detection for systems with libz dependency\n perf: \"Longum est iter per praecepta, breve et efficax per exempla\"\n perf_counter: Fix a race on perf_counter_ctx\n perf_counter: Fix tracepoint sampling to be part of generic sampling\n perf_counter: Work around gcc warning by initializing tracepoint record unconditionally\n perf tools: callchain: Fix sum of percentages to be 100% by displaying amount of ignored chains in fractal mode\n perf tools: callchain: Fix \u0027perf report\u0027 display to be callchain by default\n perf tools: callchain: Fix spurious \u0027perf report\u0027 warnings: ignore empty callchains\n perf record: Fix the -A UI for empty or non-existent perf.data\n perf util: Fix do_read() to fail on EOF instead of busy-looping\n perf list: Fix the output to not include tracepoints without an id\n perf_counter/powerpc: Fix oops on cpus without perf_counter hardware support\n perf stat: Fix tool option consistency: rename -S/--scale to -c/--scale\n perf report: Add debug help for the finding of symbol bugs - show the symtab origin (DSO, build-id, kernel, etc)\n perf report: Fix per task mult-counter stat reporting\n ...\n" }, { "commit": "cec36911b5fa4ac342f6de856b12a9f71f84e6e5", "tree": "329f88e132e35a9be143f7bc5562ffd12690dffe", "parents": [ "a3263969b02260f8733940f580c7af1c716d38ad", "ad7d6c7a0654a4bbda3e109f56af713267e96274" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Aug 10 11:21:13 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Aug 10 11:21:13 2009 -0700" }, "message": "Merge branch \u0027irq-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027irq-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n x86/irq: Fix move_irq_desc() for nodes without ram\n" }, { "commit": "a4e95fc2cbb31d70a65beffeaf8773f881328c34", "tree": "c0a00094c9c38bad5e09fd19fe23521c361177d7", "parents": [ "a044560c3a1f0ad75ce685c1ed7604820b9ed319" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Mon Aug 10 11:20:12 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Aug 10 11:33:09 2009 +0200" }, "message": "perf_counter: Require CAP_SYS_ADMIN for raw tracepoint data\n\nRaw tracepoint data contains various kernel internals and\ndata from other users, so restrict this to CAP_SYS_ADMIN.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: Mike Galbraith \u003cefault@gmx.de\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nLKML-Reference: \u003c1249896452.17467.75.camel@twins\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "a044560c3a1f0ad75ce685c1ed7604820b9ed319", "tree": "51fa4979ad02d388b35e1a56020bfbd8c2e5329d", "parents": [ "c0a8865e32c8d1a562db38e06ef31ef23282f646" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Mon Aug 10 11:16:52 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Aug 10 11:33:09 2009 +0200" }, "message": "perf_counter: Correct PERF_SAMPLE_RAW output\n\nPERF_SAMPLE_* output switches should unconditionally output the\ncorrect format, as they are the only way to unambiguously parse\nthe PERF_EVENT_SAMPLE data.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: Mike Galbraith \u003cefault@gmx.de\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nLKML-Reference: \u003c1249896447.17467.74.camel@twins\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "2e9b11afdbfe17a9cc6356076179b7ea11972607", "tree": "d76b83fec78abd1106c645ae705a5815561e8a34", "parents": [ "95d0ad049cd6937634c0a75f9518f5166daabfce", "17d42c1c497aa54952b9e58c1502a46f0df40315" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Aug 09 14:57:41 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Aug 09 14:57:41 2009 -0700" }, "message": "Merge branch \u0027timers-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027timers-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n posix_cpu_timers_exit_group(): Do not use thread_group_cputimer()\n" }, { "commit": "95d0ad049cd6937634c0a75f9518f5166daabfce", "tree": "ace9d7edcda7cf8400dce293ca26a5599cd81720", "parents": [ "413dd8768ada25adbf53284696b71de7e7844969", "f413cdb80ce00ec1a4d0ab949b5d96c81cae7f75" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Aug 09 14:57:26 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Aug 09 14:57:26 2009 -0700" }, "message": "Merge branch \u0027tracing-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027tracing-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n perf_counter: Fix/complete ftrace event records sampling\n perf_counter, ftrace: Fix perf_counter integration\n tracing/filters: Always free pred on filter_add_subsystem_pred() failure\n tracing/filters: Don\u0027t use pred on alloc failure\n ring-buffer: Fix memleak in ring_buffer_free()\n tracing: Fix recordmcount.pl to handle sections with only weak functions\n ring-buffer: Fix advance of reader in rb_buffer_peek()\n tracing: do not use functions starting with .L in recordmcount.pl\n ring-buffer: do not disable ring buffer on oops_in_progress\n ring-buffer: fix check of try_to_discard result\n" }, { "commit": "713e3e1875749f341247a0c922e6ddd38fbd991c", "tree": "0419bf8fbb3bf28a275d196bcdcb0d00cf773986", "parents": [ "7b2aa037e878c939676675969983284a02958ae3", "0e692a94e378628b7d527260ad939894454bcca8" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Aug 09 14:56:51 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Aug 09 14:56:51 2009 -0700" }, "message": "Merge branch \u0027core-fixes-for-linus-2\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core-fixes-for-linus-2\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n lockdep: Fix typos in documentation\n lockdep: Fix file mode of lock_stat\n rtmutex: Avoid deadlock in rt_mutex_start_proxy_lock()\n" }, { "commit": "3a80b4a3539696f4b0574876326860323035a302", "tree": "9d2901259a2b25b181997f89495452fd7f06827b", "parents": [ "3a43ce68ae1758fa6a839386025ef45acb6baa22" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Fri Aug 07 19:49:01 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Aug 09 12:54:46 2009 +0200" }, "message": "perf_counter: Fix a race on perf_counter_ctx\n\nWhile extending perfcounters with BTS hw-tracing, Markus\nMetzger managed to trigger this warning:\n\n [ 995.557128] WARNING: at kernel/perf_counter.c:1191 __perf_counter_task_sched_out+0x48/0x6b()\n\ntriggers because commit\n9f498cc5be7e013d8d6e4c616980ed0ffc8680d2 (perf_counter: Full\ntask tracing) removed clearing of tsk-\u003eperf_counter_ctxp out\nfrom under ctx-\u003elock which introduced a race (against\nperf_lock_task_context).\n\nMove it back and deal with the exit notification by explicitly\npassing along the former task context.\n\nReported-by: Markus T Metzger \u003cmarkus.t.metzger@intel.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nLKML-Reference: \u003c1249667341.17467.5.camel@twins\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "3a43ce68ae1758fa6a839386025ef45acb6baa22", "tree": "5431e80f427ac6312dc123ecfdb101ea71b3d364", "parents": [ "10b8e3066066708f304e0fc5cfe658e05abf943d" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Sat Aug 08 04:26:37 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Aug 09 12:54:45 2009 +0200" }, "message": "perf_counter: Fix tracepoint sampling to be part of generic sampling\n\nBased on Peter\u0027s comments, make tracepoint sampling generic\njust like all the other sampling bits are. This is a rename\nwith no code changes:\n\n- PERF_SAMPLE_TP_RECORD to PERF_SAMPLE_RAW\n- struct perf_tracepoint_record to perf_raw_record\n\nWe want the system in place that transport tracepoints raw\nsamples events into the perf ring buffer to be generalized and\nusable by any type of counter.\n\nReported-by; Peter Zijlstra \u003cpeterz@infradead.org\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: Mike Galbraith \u003cefault@gmx.de\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nLKML-Reference: \u003c1249698400-5441-4-git-send-email-fweisbec@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "10b8e3066066708f304e0fc5cfe658e05abf943d", "tree": "1ccebafe8ae44f6f032f993c63eb58a6c2aadea4", "parents": [ "25446036cbfc2c89faacdb4fb4603943d2197dc6" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Sat Aug 08 04:26:35 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Aug 09 12:54:44 2009 +0200" }, "message": "perf_counter: Work around gcc warning by initializing tracepoint record unconditionally\n\nDespite that the tracepoint record is always present when the\nPERF_SAMPLE_TP_RECORD flag is set, gcc raises a warning,\nthinking it might not be initialized:\n\n kernel/perf_counter.c: In function ‘perf_counter_output’:\n kernel/perf_counter.c:2650: warning: ‘tp’ may be used uninitialized in this function\n\nThen, initialize it to NULL and always check if it\u0027s not NULL\nbefore dereference it.\n\nReported-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: Mike Galbraith \u003cefault@gmx.de\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nLKML-Reference: \u003c1249698400-5441-2-git-send-email-fweisbec@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "7b4b6658e152ed4568cfff48175d93645df081d1", "tree": "663ff8dc6b7b11fcfbfaf6e24e146e2e29b3489c", "parents": [ "46ab976443c6c566c8fe6fc72a6733a55ba9fbea" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Wed Jul 22 09:29:32 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Aug 09 12:54:30 2009 +0200" }, "message": "perf_counter: Fix software counters for fast moving event sources\n\nReimplement the software counters to deal with fast moving\nevent sources (such as tracepoints). This means being able\nto generate multiple overflows from a single \u0027event\u0027 as well\nas support throttling.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "f413cdb80ce00ec1a4d0ab949b5d96c81cae7f75", "tree": "08a9621cb1318f73a37faeed14c4e728408551ad", "parents": [ "3a6593050fbd8bbcaed3a44d01c31d907315c86c" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Fri Aug 07 01:25:54 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Aug 09 12:53:48 2009 +0200" }, "message": "perf_counter: Fix/complete ftrace event records sampling\n\nThis patch implements the kernel side support for ftrace event\nrecord sampling.\n\nA new counter sampling attribute is added:\n\n PERF_SAMPLE_TP_RECORD\n\nwhich requests ftrace events record sampling. In this case\nif a PERF_TYPE_TRACEPOINT counter is active and a tracepoint\nfires, we emit the tracepoint binary record to the\nperfcounter event buffer, as a sample.\n\nResult, after setting PERF_SAMPLE_TP_RECORD attribute from perf\nrecord:\n\n perf record -f -F 1 -a -e workqueue:workqueue_execution\n perf report -D\n\n 0x21e18 [0x48]: event: 9\n .\n . ... raw event: size 72 bytes\n . 0000: 09 00 00 00 01 00 48 00 d0 c7 00 81 ff ff ff ff ......H........\n . 0010: 0a 00 00 00 0a 00 00 00 21 00 00 00 00 00 00 00 ........!......\n . 0020: 2b 00 01 02 0a 00 00 00 0a 00 00 00 65 76 65 6e +...........eve\n . 0030: 74 73 2f 31 00 00 00 00 00 00 00 00 0a 00 00 00 ts/1...........\n . 0040: e0 b1 31 81 ff ff ff ff .......\n.\n0x21e18 [0x48]: PERF_EVENT_SAMPLE (IP, 1): 10: 0xffffffff8100c7d0 period: 33\n\nThe raw ftrace binary record starts at offset 0020.\n\nTranslation:\n\n struct trace_entry {\n\ttype\t\t\u003d 0x2b \u003d 43;\n\tflags\t\t\u003d 1;\n\tpreempt_count\t\u003d 2;\n\tpid\t\t\u003d 0xa \u003d 10;\n\ttgid\t\t\u003d 0xa \u003d 10;\n }\n\n thread_comm \u003d \"events/1\"\n thread_pid \u003d 0xa \u003d 10;\n func\t \u003d 0xffffffff8131b1e0 \u003d flush_to_ldisc()\n\nWhat will come next?\n\n - Userspace support (\u0027perf trace\u0027), \u0027flight data recorder\u0027 mode\n for perf trace, etc.\n\n - The unconditional copy from the profiling callback brings\n some costs however if someone wants no such sampling to\n occur, and needs to be fixed in the future. For that we need\n to have an instant access to the perf counter attribute.\n This is a matter of a flag to add in the struct ftrace_event.\n\n - Take care of the events recursivity! Don\u0027t ever try to record\n a lock event for example, it seems some locking is used in\n the profiling fast path and lead to a tracing recursivity.\n That will be fixed using raw spinlock or recursivity\n protection.\n\n - [...]\n\n - Profit! :-)\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Tom Zanussi \u003ctzanussi@gmail.com\u003e\nCc: Arnaldo Carvalho de Melo \u003cacme@redhat.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Mike Galbraith \u003cefault@gmx.de\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nCc: Gabriel Munteanu \u003ceduard.munteanu@linux360.ro\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "3a6593050fbd8bbcaed3a44d01c31d907315c86c", "tree": "5bbaa0015ed0b0986146cc6fa9390f559bcb66b1", "parents": [ "e3560336be655c6791316482fe288b119f34c427" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Tue Jul 21 17:34:57 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Aug 09 12:47:25 2009 +0200" }, "message": "perf_counter, ftrace: Fix perf_counter integration\n\nAdds possible second part to the assign argument of TP_EVENT().\n\n TP_perf_assign(\n\t__perf_count(foo);\n\t__perf_addr(bar);\n )\n\nWhich, when specified make the swcounter increment with @foo instead\nof the usual 1, and report @bar for PERF_SAMPLE_ADDR (data address\nassociated with the event) when this triggers a counter overflow.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nAcked-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Jason Baron \u003cjbaron@redhat.com\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "e3560336be655c6791316482fe288b119f34c427", "tree": "43ca9a6b489aaa3918b773f78a7eda37458ef0a8", "parents": [ "26528e773ecc74fb1b61b7275f86f761cbb340ec", "7b2aa037e878c939676675969983284a02958ae3" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Aug 09 12:46:45 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Aug 09 12:46:49 2009 +0200" }, "message": "Merge branch \u0027linus\u0027 into tracing/urgent\n\nMerge reason: Merge up to almost-rc6 to pick up latest perfcounters\n (on which we\u0027ll queue up a dependent fix)\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "17d42c1c497aa54952b9e58c1502a46f0df40315", "tree": "0aefce76ad5dca93c9ca5d9261c77e2b4a0c8967", "parents": [ "7b2aa037e878c939676675969983284a02958ae3" ], "author": { "name": "Stanislaw Gruszka", "email": "sgruszka@redhat.com", "time": "Thu Aug 06 16:03:30 2009 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Aug 08 18:30:25 2009 +0200" }, "message": "posix_cpu_timers_exit_group(): Do not use thread_group_cputimer()\n\nWhen the process exits we don\u0027t have to run new cputimer nor\nuse running one (as it not accounts when tsk-\u003eexit_state !\u003d 0)\nto get process CPU times. As there is only one thread we can\njust use CPU times fields from task and signal structs.\n\nSigned-off-by: Stanislaw Gruszka \u003csgruszka@redhat.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Vitaly Mayatskikh \u003cvmayatsk@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "fb82ad719831db58e9baa4c67015aae3fe27e7e3", "tree": "61009acdbd934e75c8328d1af6314e10ade6ffaf", "parents": [ "a2ca5e03b6a5a1d401062f0a7f78888cf9e5e3b0" ], "author": { "name": "Tom Zanussi", "email": "tzanussi@gmail.com", "time": "Sat Aug 08 10:49:36 2009 -0500" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Aug 08 17:58:07 2009 +0200" }, "message": "tracing/filters: Don\u0027t use pred on alloc failure\n\nDan Carpenter sent me a fix to prevent pred from being used if\nit couldn\u0027t be allocated. This updates his patch for the same\nproblem in the tracing tree (which has changed this code quite\nsubstantially).\n\nReported-by: Dan Carpenter \u003cerror27@gmail.com\u003e\nSigned-off-by: Tom Zanussi \u003ctzanussi@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nLKML-Reference: \u003c1249746576.6453.30.camel@tropicana\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nThe original report:\n\ncreate_logical_pred() could sometimes return NULL.\n\nIt\u0027s a static checker complaining rather than problems at runtime...\n" }, { "commit": "26528e773ecc74fb1b61b7275f86f761cbb340ec", "tree": "e3892e1c58783cc022517dab31b1e18179cb930b", "parents": [ "96b2de313b1e0e02aea80ee47df6a2b5cbdf8e13" ], "author": { "name": "Tom Zanussi", "email": "tzanussi@gmail.com", "time": "Sat Aug 08 10:49:53 2009 -0500" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Aug 08 17:56:13 2009 +0200" }, "message": "tracing/filters: Always free pred on filter_add_subsystem_pred() failure\n\nIf filter_add_subsystem_pred() fails due to ENOSPC or ENOMEM,\nthe pred doesn\u0027t get freed, while as a side effect it does for\nother errors. Make it so the caller always frees the pred for\nany error.\n\nSigned-off-by: Tom Zanussi \u003ctzanussi@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nLKML-Reference: \u003c1249746593.6453.32.camel@tropicana\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "96b2de313b1e0e02aea80ee47df6a2b5cbdf8e13", "tree": "f6d1a22d6ab587d346f642fe89db9d75401da57b", "parents": [ "bd3f02212d6a457267e0c9c02c426151c436d9d4" ], "author": { "name": "Tom Zanussi", "email": "tzanussi@gmail.com", "time": "Sat Aug 08 10:49:09 2009 -0500" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Aug 08 17:55:34 2009 +0200" }, "message": "tracing/filters: Don\u0027t use pred on alloc failure\n\nDan Carpenter sent me a fix to prevent pred from being used if\nit couldn\u0027t be allocated. I noticed the same problem also\nexisted for the create_pred() case and added a fix for that.\n\nReported-by: Dan Carpenter \u003cerror27@gmail.com\u003e\nSigned-off-by: Tom Zanussi \u003ctzanussi@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nLKML-Reference: \u003c1249746549.6453.29.camel@tropicana\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "ad7d6c7a0654a4bbda3e109f56af713267e96274", "tree": "4090be64f42e9c721a797d6798611ad9c07d2a2e", "parents": [ "7b2aa037e878c939676675969983284a02958ae3" ], "author": { "name": "Yinghai Lu", "email": "yinghai@kernel.org", "time": "Tue Aug 04 09:01:33 2009 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Aug 08 17:06:03 2009 +0200" }, "message": "x86/irq: Fix move_irq_desc() for nodes without ram\n\nDon\u0027t move it if target node is -1.\n\nSigned-off-by: Yinghai Lu \u003cyinghai@kernel.org\u003e\nLKML-Reference: \u003c4A785B5D.4070702@kernel.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "da758ddede96dd850945d3417ff75209a666ba0d", "tree": "f8da615ef68c9311b87af8fed6a7b717d7e5564d", "parents": [ "389623fef0e8b088f293c437d3b7094fe82349fd", "1054598cab8674438675085fae459e960eb10799" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Aug 07 10:43:07 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Aug 07 10:43:07 2009 -0700" }, "message": "Merge branch \u0027perfcounters-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027perfcounters-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n perf_counter: Fix double list iteration in per task precise stats\n perf: Auto-detect libelf\n perf symbol: Fix symbol parsing in certain cases: use the build-id as a symlink\n perf_counter/powerpc: Check oprofile_cpu_type for NULL before using it\n ftrace: Fix perf-tracepoint OOPS\n perf report: Add missing command line options to man page\n perf: Auto-detect libbfd\n perf report: Make --sort comm,dso,symbol the default\n" }, { "commit": "9c8a8228d0827e0d91d28527209988f672f97d28", "tree": "795b72cfb89abe8bfae1c51dd329e0d6c2ed754f", "parents": [ "2198a64a7487aba036f71998ade8a6528070d32c" ], "author": { "name": "Eric Dumazet", "email": "eric.dumazet@gmail.com", "time": "Thu Aug 06 15:09:28 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Aug 07 10:39:56 2009 -0700" }, "message": "execve: must clear current-\u003eclear_child_tid\n\nWhile looking at Jens Rosenboom bug report\n(http://lkml.org/lkml/2009/7/27/35) about strange sys_futex call done from\na dying \"ps\" program, we found following problem.\n\nclone() syscall has special support for TID of created threads. This\nsupport includes two features.\n\nOne (CLONE_CHILD_SETTID) is to set an integer into user memory with the\nTID value.\n\nOne (CLONE_CHILD_CLEARTID) is to clear this same integer once the created\nthread dies.\n\nThe integer location is a user provided pointer, provided at clone()\ntime.\n\nkernel keeps this pointer value into current-\u003eclear_child_tid.\n\nAt execve() time, we should make sure kernel doesnt keep this user\nprovided pointer, as full user memory is replaced by a new one.\n\nAs glibc fork() actually uses clone() syscall with CLONE_CHILD_SETTID and\nCLONE_CHILD_CLEARTID set, chances are high that we might corrupt user\nmemory in forked processes.\n\nFollowing sequence could happen:\n\n1) bash (or any program) starts a new process, by a fork() call that\n glibc maps to a clone( ... CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID\n ...) syscall\n\n2) When new process starts, its current-\u003eclear_child_tid is set to a\n location that has a meaning only in bash (or initial program) context\n (\u0026THREAD_SELF-\u003etid)\n\n3) This new process does the execve() syscall to start a new program.\n current-\u003eclear_child_tid is left unchanged (a non NULL value)\n\n4) If this new program creates some threads, and initial thread exits,\n kernel will attempt to clear the integer pointed by\n current-\u003eclear_child_tid from mm_release() :\n\n if (tsk-\u003eclear_child_tid\n \u0026\u0026 !(tsk-\u003eflags \u0026 PF_SIGNALED)\n \u0026\u0026 atomic_read(\u0026mm-\u003emm_users) \u003e 1) {\n u32 __user * tidptr \u003d tsk-\u003eclear_child_tid;\n tsk-\u003eclear_child_tid \u003d NULL;\n\n /*\n * We don\u0027t check the error code - if userspace has\n * not set up a proper pointer then tough luck.\n */\n\u003c\u003c here \u003e\u003e put_user(0, tidptr);\n sys_futex(tidptr, FUTEX_WAKE, 1, NULL, NULL, 0);\n }\n\n5) OR : if new program is not multi-threaded, but spied by /proc/pid\n users (ps command for example), mm_users \u003e 1, and the exiting program\n could corrupt 4 bytes in a persistent memory area (shm or memory mapped\n file)\n\nIf current-\u003eclear_child_tid points to a writeable portion of memory of the\nnew program, kernel happily and silently corrupts 4 bytes of memory, with\nunexpected effects.\n\nFix is straightforward and should not break any sane program.\n\nReported-by: Jens Rosenboom \u003cjens@mcbone.net\u003e\nAcked-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nSigned-off-by: Eric Dumazet \u003ceric.dumazet@gmail.com\u003e\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Sonny Rao \u003csonnyrao@us.ibm.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ulrich Drepper \u003cdrepper@redhat.com\u003e\nCc: Oleg Nesterov \u003coleg@redhat.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": "69dd647f969c28d18de77e2153f30d05a1874571", "tree": "7328f31d84b567e7f5648d35b5c535f9223e368a", "parents": [ "2020002a878403a6858868d85a43623f74859dba" ], "author": { "name": "Xiao Guangrong", "email": "xiaoguangrong@cn.fujitsu.com", "time": "Thu Aug 06 15:07:29 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Aug 07 10:39:55 2009 -0700" }, "message": "generic-ipi: fix hotplug_cfd()\n\nUse CONFIG_HOTPLUG_CPU, not CONFIG_CPU_HOTPLUG\n\nWhen hot-unpluging a cpu, it will leak memory allocated at cpu hotplug,\nbut only if CPUMASK_OFFSTACK\u003dy, which is default to n.\n\nThe bug was introduced by 8969a5ede0f9e17da4b943712429aef2c9bcd82b\n(\"generic-ipi: remove kmalloc()\").\n\nSigned-off-by: Xiao Guangrong \u003cxiaoguangrong@cn.fujitsu.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\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": "bd3f02212d6a457267e0c9c02c426151c436d9d4", "tree": "eb96e54b958c0d8202e2a3c65ada5399c387f9c0", "parents": [ "7dbdee2e9a2ac42ea5135801bcc9d1a8e3f672aa" ], "author": { "name": "Eric Dumazet", "email": "eric.dumazet@gmail.com", "time": "Fri Aug 07 12:49:29 2009 +0200" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Fri Aug 07 12:46:39 2009 -0400" }, "message": "ring-buffer: Fix memleak in ring_buffer_free()\n\nI noticed oprofile memleaked in linux-2.6 current tree,\nand tracked this ring-buffer leak.\n\nSigned-off-by: Eric Dumazet \u003ceric.dumazet@gmail.com\u003e\nLKML-Reference: \u003c4A7C06B9.2090302@gmail.com\u003e\nCc: stable@kernel.org\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "9795447f71324d8f14c19ed68b43c883135c3f59", "tree": "07bec75b0e0b90d1e9bc4395f13b8a08edae1a97", "parents": [ "1bbf20835c4e088667a090ce6523a0f70b62dc76" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Fri Aug 07 16:37:10 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Aug 07 11:58:38 2009 +0200" }, "message": "lockdep: Fix file mode of lock_stat\n\n/proc/lock_stat is writable.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nLKML-Reference: \u003c4A7BE7B6.10904@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "1054598cab8674438675085fae459e960eb10799", "tree": "9dcf2c60080e8275bded902f7a08ebcd8140dfcc", "parents": [ "9424edc2da097c8589fcc24a72552d33e54be161" ], "author": { "name": "Peter Zijlstra", "email": "peterz@infradead.org", "time": "Thu Aug 06 18:06:26 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Aug 06 20:25:18 2009 +0200" }, "message": "perf_counter: Fix double list iteration in per task precise stats\n\nBrice Goglin reported this crash with per task precise stats:\n\n\u003e I finally managed to test the threaded perfcounter statistics (thanks a\n\u003e lot for implementing it). I am running 2.6.31-rc5 (with the AMD\n\u003e magny-cours patches but I don\u0027t think they matter here). I am trying to\n\u003e measure local/remote memory accesses per thread during the well-known\n\u003e stream benchmark. It\u0027s compiled with OpenMP using 16 threads on a\n\u003e quad-socket quad-core barcelona machine.\n\u003e\n\u003e Command line is:\n\u003e /mnt/scratch/bgoglin/cpunode/linux-2.6.31/tools/perf/perf record -f -s\n\u003e -e r1000001e0 -e r1000002e0 -e r1000004e0 -e r1000008e0 ./stream\n\u003e\n\u003e It seems to work fine with a single -e \u003ccounter\u003e on the command line\n\u003e while it crashes when there are at least 2 of them.\n\u003e It seems to work fine without -s as well.\n\nA silly copy-paste resulted in a messed up iteration which would\ncause the OOPS.\n\nReported-by: Brice Goglin \u003cBrice.Goglin@inria.fr\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nTested-by: Brice Goglin \u003cBrice.Goglin@inria.fr\u003e\nLKML-Reference: \u003c1249574786.32113.550.camel@twins\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "469535a598f28c13a2a42037e1b778f671af1d16", "tree": "907a3434e87bdab3f37f3c965a230af7af9bdb30", "parents": [ "3f6e968ef4e1d8d93d8a8505461b0e50a9e97ad8" ], "author": { "name": "Robert Richter", "email": "robert.richter@amd.com", "time": "Thu Jul 30 19:19:18 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Aug 06 14:20:25 2009 +0200" }, "message": "ring-buffer: Fix advance of reader in rb_buffer_peek()\n\nWhen calling rb_buffer_peek() from ring_buffer_consume() and a\npadding event is returned, the function rb_advance_reader() is\ncalled twice. This may lead to missing samples or under high\nworkloads to the warning below. This patch fixes this. If a padding\nevent is returned by rb_buffer_peek() it will be consumed by the\ncalling function now.\n\nAlso, I simplified some code in ring_buffer_consume().\n\n------------[ cut here ]------------\nWARNING: at /dev/shm/.source/linux/kernel/trace/ring_buffer.c:2289 rb_advance_reader+0x2e/0xc5()\nHardware name: Anaheim\nModules linked in:\nPid: 29, comm: events/2 Tainted: G W 2.6.31-rc3-oprofile-x86_64-standard-00059-g5050dc2 #1\nCall Trace:\n[\u003cffffffff8106776f\u003e] ? rb_advance_reader+0x2e/0xc5\n[\u003cffffffff81039ffe\u003e] warn_slowpath_common+0x77/0x8f\n[\u003cffffffff8103a025\u003e] warn_slowpath_null+0xf/0x11\n[\u003cffffffff8106776f\u003e] rb_advance_reader+0x2e/0xc5\n[\u003cffffffff81068bda\u003e] ring_buffer_consume+0xa0/0xd2\n[\u003cffffffff81326933\u003e] op_cpu_buffer_read_entry+0x21/0x9e\n[\u003cffffffff810be3af\u003e] ? __find_get_block+0x4b/0x165\n[\u003cffffffff8132749b\u003e] sync_buffer+0xa5/0x401\n[\u003cffffffff810be3af\u003e] ? __find_get_block+0x4b/0x165\n[\u003cffffffff81326c1b\u003e] ? wq_sync_buffer+0x0/0x78\n[\u003cffffffff81326c76\u003e] wq_sync_buffer+0x5b/0x78\n[\u003cffffffff8104aa30\u003e] worker_thread+0x113/0x1ac\n[\u003cffffffff8104dd95\u003e] ? autoremove_wake_function+0x0/0x38\n[\u003cffffffff8104a91d\u003e] ? worker_thread+0x0/0x1ac\n[\u003cffffffff8104dc9a\u003e] kthread+0x88/0x92\n[\u003cffffffff8100bdba\u003e] child_rip+0xa/0x20\n[\u003cffffffff8104dc12\u003e] ? kthread+0x0/0x92\n[\u003cffffffff8100bdb0\u003e] ? child_rip+0x0/0x20\n---[ end trace f561c0a58fcc89bd ]---\n\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Robert Richter \u003crobert.richter@amd.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "a2ca5e03b6a5a1d401062f0a7f78888cf9e5e3b0", "tree": "b3c35ebab71bf1d944acfed671d2a02cf5304017", "parents": [ "1a0799a8fef5acc6503f9c5e79b2cd003317826c" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Thu Aug 06 07:32:21 2009 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Thu Aug 06 07:32:21 2009 +0200" }, "message": "tracing/events: Only define remove_subsystem_dir() if CONFIG_MODULES\n\nIf we disable modules, we get the following warning in ftrace events\nfile:\n\nkernel/trace/trace_events.c:912: attention : ‘remove_subsystem_dir’ defined but not used\n\nremove_subystem_dir() is useless if !CONFIG_MODULES, then move it to\nthe appropriate #ifdef section of trace_events.c\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "1a0799a8fef5acc6503f9c5e79b2cd003317826c", "tree": "8aec6e623981cd8505de53752234d9f6b5d94843", "parents": [ "82e04af498a85ba425efe77580b7ba08234411df" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Jul 29 18:59:58 2009 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Thu Aug 06 07:28:06 2009 +0200" }, "message": "tracing/function-graph-tracer: Move graph event insertion helpers in the graph tracer file\n\nThe function graph events helpers which insert the function entry and\nreturn events into the ring buffer currently reside in trace.c\nBut this file is quite overloaded and the right place for these helpers\nis in the function graph tracer file.\n\nThen move them to trace_functions_graph.c\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "82e04af498a85ba425efe77580b7ba08234411df", "tree": "3683fb5e68cd96b518eb72d76b608205613feb24", "parents": [ "c0a0d0d3f65284c71115a9bb1ed801ee33eeb552" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Jul 29 18:00:29 2009 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Thu Aug 06 07:28:06 2009 +0200" }, "message": "tracing: Move sched event insertion helpers in the sched switch tracer file\n\nThe sched events helpers which insert the sched switch and wakeup\nevents into the ring buffer currently reside in trace.c\nBut this file is quite overloaded and the right place for these helpers\nis in the sched switch tracer file.\n\nThen move them to trace_functions.c\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "c0a0d0d3f65284c71115a9bb1ed801ee33eeb552", "tree": "ac4c74e18c73f368abc8721f8f04c9101069fcaf", "parents": [ "5e5bf483986ad86ad25f25eec5299c86eb2d1c57" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Jul 29 17:51:13 2009 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Thu Aug 06 07:28:05 2009 +0200" }, "message": "tracing/core: Make the stack entry helpers global\n\nMake the stacktrace event insertion helpers globals.\nThis has two effects:\n\n- Prepare for moving the sched events insertion helpers to\n the sched switch tracer file.\n- Move some ifdef outside function definitions\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "5e5bf483986ad86ad25f25eec5299c86eb2d1c57", "tree": "51ca52240afe82bab1366b1677d9f8a55bbee6fb", "parents": [ "07868b086cca784f4b532fc2ab574ec3a73b468a" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Wed Jul 29 17:11:12 2009 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Thu Aug 06 07:28:05 2009 +0200" }, "message": "tracing/core: Turn ftrace_cpu_disabled into a global var\n\nIn order to prepare the moving of the function graph tracer insertion\nhelpers from trace.c to trace_functions_graph.c, we need to export the\nftrace_cpu_disabled variable.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "0c9e6f639aed490202bbc79214f4495cf4bfde58", "tree": "0df6f05086a033ec49995fe1cd3fde5474446cdb", "parents": [ "1f9963cbb0280e0cd554161e00f1a0eeddbf1ae1" ], "author": { "name": "Lai Jiangshan", "email": "laijs@cn.fujitsu.com", "time": "Tue Jul 28 20:26:06 2009 +0800" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Thu Aug 06 07:28:04 2009 +0200" }, "message": "tracing: Simplify print_graph_cpu()\n\nprint_graph_cpu() is little over-designed.\n\nAnd \"log10_all\" may be wrong when there are holes in cpu_online_mask:\nthe max online cpu id \u003e cpumask_weight(cpu_online_mask)\n\nSo change it by using a static column length for the cpu matching\nnr_cpu_ids number of decimal characters.\n\nSigned-off-by: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nLKML-Reference: \u003c4A6EEE5E.2000001@cn.fujitsu.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "af6af30c0fcd77e621638e53ef8b176bca8bd3b4", "tree": "fde3faf7cc117e208dd033eee707dbd9de5f912e", "parents": [ "386c0b702b1ea81c0f54f5c9832a3d4a52270f14" ], "author": { "name": "Peter Zijlstra", "email": "peterz@infradead.org", "time": "Wed Aug 05 20:41:04 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Aug 06 06:26:09 2009 +0200" }, "message": "ftrace: Fix perf-tracepoint OOPS\n\nNot all tracepoints are created equal, in specific the ftrace\ntracepoints are created with TRACE_EVENT_FORMAT() which does\nnot generate the needed bits to tie them into perf counters.\n\nFor those events, don\u0027t create the \u0027id\u0027 file and fail\n-\u003eprofile_enable when their ID is specified through other\nmeans.\n\nReported-by: Chris Mason \u003cchris.mason@oracle.com\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nLKML-Reference: \u003c1249497664.5890.4.camel@laptop\u003e\n[ v2: fix build error in the !CONFIG_EVENT_PROFILE case ]\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "1bbf20835c4e088667a090ce6523a0f70b62dc76", "tree": "91fea2bd29abf6be58c55e259d2904de303fcf3e", "parents": [ "90bc1a658a53f8832ee799685703977a450e5af9" ], "author": { "name": "Darren Hart", "email": "dvhltc@us.ibm.com", "time": "Wed Aug 05 12:05:21 2009 -0700" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Aug 06 05:50:21 2009 +0200" }, "message": "rtmutex: Avoid deadlock in rt_mutex_start_proxy_lock()\n\nIn the event of a lock steal or owner died,\nrt_mutex_start_proxy_lock() will give the rt_mutex to the\nwaiting task, but it fails to release the wait_lock. This leads\nto subsequent deadlocks when other tasks try to acquire the\nrt_mutex.\n\nI also removed a few extra blank lines that really spaced this\nroutine out. I must have been high on the \\n when I wrote this\noriginally...\n\nSigned-off-by: Darren Hart \u003cdvhltc@us.ibm.com\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Dinakar Guniguntala \u003cdino@in.ibm.com\u003e\nCc: John Stultz \u003cjohnstul@linux.vnet.ibm.com\u003e\nLKML-Reference: \u003c4A79D7F1.4000405@us.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "464e85eb0e63096bd52e4c3e2a6fb8357fb95828", "tree": "838010839e0b7b3e3a403d381f2b56dd065da3d0", "parents": [ "0f2541d299d233eddddee4345795e0c46264fd56" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Aug 05 15:26:37 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed Aug 05 20:20:00 2009 -0400" }, "message": "ring-buffer: do not disable ring buffer on oops_in_progress\n\nThe commit:\n\n commit e0fdace10e75dac67d906213b780ff1b1a4cc360\n Author: David Miller \u003cdavem@davemloft.net\u003e\n Date: Fri Aug 1 01:11:22 2008 -0700\n\n debug_locks: set oops_in_progress if we will log messages.\n\n Otherwise lock debugging messages on runqueue locks can deadlock the\n system due to the wakeups performed by printk().\n\n Signed-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n Signed-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n\nWill permanently set oops_in_progress on any lockdep failure.\nWhen this triggers it will cause any read from the ring buffer to\npermanently disable the ring buffer (not to mention no locking of\nprintk).\n\nThis patch removes the check. It keeps the print in NMI which makes\nsense. This is probably OK, since the ring buffer should not cause\nsomething to set oops_in_progress anyway.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "0f2541d299d233eddddee4345795e0c46264fd56", "tree": "19a1628703792d1e0ae8abe18c240d60a6e1705d", "parents": [ "e16852cfc5580b88cb327413ab8c89375f380592" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Aug 05 12:02:48 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Wed Aug 05 20:19:59 2009 -0400" }, "message": "ring-buffer: fix check of try_to_discard result\n\nThe function ring_buffer_discard_commit inversed the code path\nof the result of try_to_discard. It should skip incrementing the\nentry counter if try_to_discard succeeded. But instead, it increments\nthe entry conder if it succeeded to discard, and does not increment\nit if it fails.\n\nThe result of this bug is that filtering will make the stat counters\nincorrect.\n\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n" }, { "commit": "a40694a38a745af0dd7d8b796597ada1dd6caeb7", "tree": "b9f7014a6309f6b82e947d926384c0e2101b28cd", "parents": [ "ea5634246beaedd91b93d7e7fce7d825232d1b78", "f26542600e605482a1231c44ddb2966d69bd09b0" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Aug 04 15:32:40 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Aug 04 15:32:40 2009 -0700" }, "message": "Merge branch \u0027perfcounters-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027perfcounters-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n perf_counter: Set the CONFIG_PERF_COUNTERS default to y if CONFIG_PROFILING\u003dy\n perf: Fix read buffer overflow\n perf top: Add mwait_idle_with_hints to skip_symbols[]\n perf tools: Fix faulty check\n perf report: Update for the new FORK/EXIT events\n perf_counter: Full task tracing\n perf_counter: Collapse inherit on read()\n tracing, perf_counter: Add help text to CONFIG_EVENT_PROFILE\n perf_counter tools: Fix link errors with older toolchains\n" }, { "commit": "ea5634246beaedd91b93d7e7fce7d825232d1b78", "tree": "6c9de515fbb7b59465a28d524fcfc578afbe3382", "parents": [ "7193675dc8ffa0325d013602d2bbccc0954db502", "07903af152b0597d94e9b0030746b63c4664e787" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Aug 04 15:32:22 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Aug 04 15:32:22 2009 -0700" }, "message": "Merge branch \u0027sched-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027sched-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n sched: Fix race in cpupri introduced by cpumask_var changes\n sched: Fix latencytop and sleep profiling vs group scheduling\n" }, { "commit": "7193675dc8ffa0325d013602d2bbccc0954db502", "tree": "92c5ab7f2ae95e9e4f103a73b07d2e02d4c87042", "parents": [ "9c66812b6bee225950431de51dfc9dc664905038", "70d715fd0597f18528f389b5ac59102263067744" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Aug 04 15:32:08 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Aug 04 15:32:08 2009 -0700" }, "message": "Merge branch \u0027timers-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027timers-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n posix-timers: Fix oops in clock_nanosleep() with CLOCK_MONOTONIC_RAW\n" }, { "commit": "9c66812b6bee225950431de51dfc9dc664905038", "tree": "51eca731a6b58b9868e23977e4b337921e6805dc", "parents": [ "b5a7c9a0b3c5de22e1762120063daae9f91d5197", "e16852cfc5580b88cb327413ab8c89375f380592" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Aug 04 15:31:51 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Aug 04 15:31:51 2009 -0700" }, "message": "Merge branch \u0027tracing-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027tracing-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n tracing: Fix missing function_graph events when we splice_read from trace_pipe\n tracing: Fix invalid function_graph entry\n trace: stop tracer in oops_enter()\n ftrace: Only update $offset when we update $ref_func\n ftrace: Fix the conditional that updates $ref_func\n tracing: only truncate ftrace files when O_TRUNC is set\n tracing: show proper address for trace-printk format\n" }, { "commit": "e16852cfc5580b88cb327413ab8c89375f380592", "tree": "67e7d5b84e2602986f2da689625e5a25d7af7bb4", "parents": [ "bdff78707f3ce47e891f3201c9666122a70556ce", "74e7ff8c50b6b022e6ffaa736b16a4dc161d3eaf" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Aug 04 13:58:28 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Aug 04 13:58:28 2009 +0200" }, "message": "Merge branch \u0027tracing/fixes\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into tracing/urgent\n" } ], "next": "70d715fd0597f18528f389b5ac59102263067744" }