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* vmscan: tracing: add a postprocessing script for reclaim-related ftrace eventsMel Gorman2010-08-091-0/+686
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a simple post-processing script for the reclaim-related trace events. It can be used to give an indication of how much traffic there is on the LRU lists and how severe latencies due to reclaim are. Example output looks like the following Reclaim latencies expressed as order-latency_in_ms uname-3942 9-200.179000000004 9-98.7900000000373 9-99.8330000001006 kswapd0-311 0-662.097999999998 0-2.79700000002049 \ 0-149.100000000035 0-3295.73600000003 0-9806.31799999997 0-35528.833 \ 0-10043.197 0-129740.979 0-3.50500000000466 0-3.54899999999907 \ 0-9297.78999999992 0-3.48499999998603 0-3596.97999999998 0-3.92799999995623 \ 0-3.35000000009313 0-16729.017 0-3.57799999997951 0-47435.0630000001 \ 0-3.7819999998901 0-5864.06999999995 0-18635.334 0-10541.289 9-186011.565 \ 9-3680.86300000001 9-1379.06499999994 9-958571.115 9-66215.474 \ 9-6721.14699999988 9-1962.15299999993 9-1094806.125 9-2267.83199999994 \ 9-47120.9029999999 9-427653.886 9-2.6359999999404 9-632.148999999976 \ 9-476.753000000026 9-495.577000000048 9-8.45900000003166 9-6.6820000000298 \ 9-1.30500000016764 9-251.746000000043 9-383.905000000028 9-80.1419999999925 \ 9-281.160000000149 9-14.8780000000261 9-381.45299999998 9-512.07799999998 \ 9-49.5519999999087 9-167.439000000013 9-183.820999999996 9-239.527999999933 \ 9-19.9479999998584 9-148.747999999905 9-164.583000000101 9-16.9480000000913 \ 9-192.376000000164 9-64.1010000000242 9-1.40800000005402 9-3.60800000000745 \ 9-17.1359999999404 9-4.69500000006519 9-2.06400000001304 9-1582488.554 \ 9-6244.19499999983 9-348153.812 9-2.0999999998603 9-0.987999999895692 \ 0-32218.473 0-1.6140000000596 0-1.28100000019185 0-1.41300000017509 \ 0-1.32299999985844 0-602.584000000032 0-1.34400000004098 0-1.6929999999702 \ 1-22101.8190000001 9-174876.724 9-16.2420000000857 9-175.165999999736 \ 9-15.8589999997057 9-0.604999999981374 9-3061.09000000032 9-479.277000000235 \ 9-1.54499999992549 9-771.985000000335 9-4.88700000010431 9-15.0649999999441 \ 9-0.879999999888241 9-252.01500000013 9-1381.03600000031 9-545.689999999944 \ 9-3438.0129999998 9-3343.70099999988 bench-stresshig-3942 9-7063.33900000004 9-129960.482 9-2062.27500000002 \ 9-3845.59399999992 9-171.82799999998 9-16493.821 9-7615.23900000006 \ 9-10217.848 9-983.138000000035 9-2698.39999999991 9-4016.1540000001 \ 9-5522.37700000009 9-21630.429 \ 9-15061.048 9-10327.953 9-542.69700000016 9-317.652000000002 \ 9-8554.71699999995 9-1786.61599999992 9-1899.31499999994 9-2093.41899999999 \ 9-4992.62400000007 9-942.648999999976 9-1923.98300000001 9-3.7980000001844 \ 9-5.99899999983609 9-0.912000000011176 9-1603.67700000014 9-1.98300000000745 \ 9-3.96500000008382 9-0.902999999932945 9-2802.72199999983 9-1078.24799999991 \ 9-2155.82900000014 9-10.058999999892 9-1984.723 9-1687.97999999998 \ 9-1136.05300000007 9-3183.61699999985 9-458.731000000145 9-6.48600000003353 \ 9-1013.25200000009 9-8415.22799999989 9-10065.584 9-2076.79600000009 \ 9-3792.65699999989 9-71.2010000001173 9-2560.96999999997 9-2260.68400000012 \ 9-2862.65799999982 9-1255.81500000018 9-15.7440000001807 9-4.33499999996275 \ 9-1446.63800000004 9-238.635000000009 9-60.1790000000037 9-4.38800000003539 \ 9-639.567000000039 9-306.698000000091 9-31.4070000001229 9-74.997999999905 \ 9-632.725999999791 9-1625.93200000003 9-931.266000000061 9-98.7749999999069 \ 9-984.606999999844 9-225.638999999966 9-421.316000000108 9-653.744999999879 \ 9-572.804000000004 9-769.158999999985 9-603.918000000063 9-4.28499999991618 \ 9-626.21399999992 9-1721.25 9-0.854999999981374 9-572.39599999995 \ 9-681.881999999983 9-1345.12599999993 9-363.666999999899 9-3823.31099999999 \ 9-2991.28200000012 9-4.27099999994971 9-309.76500000013 9-3068.35700000008 \ 9-788.25 9-3515.73999999999 9-2065.96100000013 9-286.719999999972 \ 9-316.076000000117 9-344.151000000071 9-2.51000000000931 9-306.688000000082 \ 9-1515.00099999993 9-336.528999999864 9-793.491999999853 9-457.348999999929 \ 9-13620.155 9-119.933999999892 9-35.0670000000391 9-918.266999999993 \ 9-828.569000000134 9-4863.81099999999 9-105.222000000067 9-894.23900000006 \ 9-110.964999999851 9-0.662999999942258 9-12753.3150000002 9-12.6129999998957 \ 9-13368.0899999999 9-12.4199999999255 9-1.00300000002608 9-1.41100000008009 \ 9-10300.5290000001 9-16.502000000095 9-30.7949999999255 9-6283.0140000002 \ 9-4320.53799999994 9-6826.27300000004 9-3.07299999985844 9-1497.26799999992 \ 9-13.4040000000969 9-3.12999999988824 9-3.86100000003353 9-11.3539999998175 \ 9-0.10799999977462 9-21.780999999959 9-209.695999999996 9-299.647000000114 \ 9-6.01699999999255 9-20.8349999999627 9-22.5470000000205 9-5470.16800000006 \ 9-7.60499999998137 9-0.821000000229105 9-1.56600000010803 9-14.1669999998994 \ 9-0.209000000031665 9-1.82300000009127 9-1.70000000018626 9-19.9429999999702 \ 9-124.266999999993 9-0.0389999998733401 9-6.71400000015274 9-16.7710000001825 \ 9-31.0409999999683 9-0.516999999992549 9-115.888000000035 9-5.19900000002235 \ 9-222.389999999898 9-11.2739999999758 9-80.9050000000279 9-8.14500000001863 \ 9-4.44599999999627 9-0.218999999808148 9-0.715000000083819 9-0.233000000007451 \ 9-48.2630000000354 9-248.560999999987 9-374.96800000011 9-644.179000000004 \ 9-0.835999999893829 9-79.0060000000522 9-128.447999999858 9-0.692000000039116 \ 9-5.26500000013039 9-128.449000000022 9-2.04799999995157 9-12.0990000001621 \ 9-8.39899999997579 9-10.3860000001732 9-11.9310000000987 9-53.4450000000652 \ 9-0.46999999997206 9-2.96299999998882 9-17.9699999999721 9-0.776000000070781 \ 9-25.2919999998994 9-33.1110000000335 9-0.434000000124797 9-0.641000000061467 \ 9-0.505000000121072 9-1.12800000002608 9-149.222000000067 9-1.17599999997765 \ 9-3247.33100000001 9-10.7439999999478 9-153.523000000045 9-1.38300000014715 \ 9-794.762000000104 9-3.36199999996461 9-128.765999999829 9-181.543999999994 \ 9-78149.8229999999 9-176.496999999974 9-89.9940000001807 9-9.12700000009499 \ 9-250.827000000048 9-0.224999999860302 9-0.388999999966472 9-1.16700000036508 \ 9-32.1740000001155 9-12.6800000001676 9-0.0720000001601875 9-0.274999999906868 \ 9-0.724000000394881 9-266.866000000387 9-45.5709999999963 9-4.54399999976158 \ 9-8.27199999988079 9-4.38099999958649 9-0.512000000104308 9-0.0640000002458692 \ 9-5.20000000018626 9-0.0839999997988343 9-12.816000000108 9-0.503000000026077 \ 9-0.507999999914318 9-6.23999999975786 9-3.35100000025705 9-18.8530000001192 \ 9-25.2220000000671 9-68.2309999996796 9-98.9939999999478 9-0.441000000108033 \ 9-4.24599999981001 9-261.702000000048 9-3.01599999982864 9-0.0749999997206032 \ 9-0.0370000000111759 9-4.375 9-3.21800000034273 9-11.3960000001825 \ 9-0.0540000000037253 9-0.286000000312924 9-0.865999999921769 \ 9-0.294999999925494 9-6.45999999996275 9-4.31099999975413 9-128.248999999836 \ 9-0.282999999821186 9-102.155000000261 9-0.0860000001266599 \ 9-0.0540000000037253 9-0.935000000055879 9-0.0670000002719462 \ 9-5.8640000000596 9-19.9860000000335 9-4.18699999991804 9-0.566000000108033 \ 9-2.55099999997765 9-0.702000000048429 9-131.653999999631 9-0.638999999966472 \ 9-14.3229999998584 9-183.398000000045 9-178.095999999903 9-3.22899999981746 \ 9-7.31399999978021 9-22.2400000002235 9-11.7979999999516 9-108.10599999968 \ 9-99.0159999998286 9-102.640999999829 9-38.414000000339 Process Direct Wokeup Pages Pages Pages details Rclms Kswapd Scanned Sync-IO ASync-IO cc1-30800 0 1 0 0 0 wakeup-0=1 cc1-24260 0 1 0 0 0 wakeup-0=1 cc1-24152 0 12 0 0 0 wakeup-0=12 cc1-8139 0 1 0 0 0 wakeup-0=1 cc1-4390 0 1 0 0 0 wakeup-0=1 cc1-4648 0 7 0 0 0 wakeup-0=7 cc1-4552 0 3 0 0 0 wakeup-0=3 dd-4550 0 31 0 0 0 wakeup-0=31 date-4898 0 1 0 0 0 wakeup-0=1 cc1-6549 0 7 0 0 0 wakeup-0=7 as-22202 0 17 0 0 0 wakeup-0=17 cc1-6495 0 9 0 0 0 wakeup-0=9 cc1-8299 0 1 0 0 0 wakeup-0=1 cc1-6009 0 1 0 0 0 wakeup-0=1 cc1-2574 0 2 0 0 0 wakeup-0=2 cc1-30568 0 1 0 0 0 wakeup-0=1 cc1-2679 0 6 0 0 0 wakeup-0=6 sh-13747 0 12 0 0 0 wakeup-0=12 cc1-22193 0 18 0 0 0 wakeup-0=18 cc1-30725 0 2 0 0 0 wakeup-0=2 as-4392 0 2 0 0 0 wakeup-0=2 cc1-28180 0 14 0 0 0 wakeup-0=14 cc1-13697 0 2 0 0 0 wakeup-0=2 cc1-22207 0 8 0 0 0 wakeup-0=8 cc1-15270 0 179 0 0 0 wakeup-0=179 cc1-22011 0 82 0 0 0 wakeup-0=82 cp-14682 0 1 0 0 0 wakeup-0=1 as-11926 0 2 0 0 0 wakeup-0=2 cc1-6016 0 5 0 0 0 wakeup-0=5 make-18554 0 13 0 0 0 wakeup-0=13 cc1-8292 0 12 0 0 0 wakeup-0=12 make-24381 0 1 0 0 0 wakeup-1=1 date-18681 0 33 0 0 0 wakeup-0=33 cc1-32276 0 1 0 0 0 wakeup-0=1 timestamp-outpu-2809 0 253 0 0 0 wakeup-0=240 wakeup-1=13 date-18624 0 7 0 0 0 wakeup-0=7 cc1-30960 0 9 0 0 0 wakeup-0=9 cc1-4014 0 1 0 0 0 wakeup-0=1 cc1-30706 0 22 0 0 0 wakeup-0=22 uname-3942 4 1 306 0 17 direct-9=4 wakeup-9=1 cc1-28207 0 1 0 0 0 wakeup-0=1 cc1-30563 0 9 0 0 0 wakeup-0=9 cc1-22214 0 10 0 0 0 wakeup-0=10 cc1-28221 0 11 0 0 0 wakeup-0=11 cc1-28123 0 6 0 0 0 wakeup-0=6 kswapd0-311 0 7 357302 0 34233 wakeup-0=7 cc1-5988 0 7 0 0 0 wakeup-0=7 as-30734 0 161 0 0 0 wakeup-0=161 cc1-22004 0 45 0 0 0 wakeup-0=45 date-4590 0 4 0 0 0 wakeup-0=4 cc1-15279 0 213 0 0 0 wakeup-0=213 date-30735 0 1 0 0 0 wakeup-0=1 cc1-30583 0 4 0 0 0 wakeup-0=4 cc1-32324 0 2 0 0 0 wakeup-0=2 cc1-23933 0 3 0 0 0 wakeup-0=3 cc1-22001 0 36 0 0 0 wakeup-0=36 bench-stresshig-3942 287 287 80186 6295 12196 direct-9=287 wakeup-9=287 cc1-28170 0 7 0 0 0 wakeup-0=7 date-7932 0 92 0 0 0 wakeup-0=92 cc1-22222 0 6 0 0 0 wakeup-0=6 cc1-32334 0 16 0 0 0 wakeup-0=16 cc1-2690 0 6 0 0 0 wakeup-0=6 cc1-30733 0 9 0 0 0 wakeup-0=9 cc1-32298 0 2 0 0 0 wakeup-0=2 cc1-13743 0 18 0 0 0 wakeup-0=18 cc1-22186 0 4 0 0 0 wakeup-0=4 cc1-28214 0 11 0 0 0 wakeup-0=11 cc1-13735 0 1 0 0 0 wakeup-0=1 updatedb-8173 0 18 0 0 0 wakeup-0=18 cc1-13750 0 3 0 0 0 wakeup-0=3 cat-2808 0 2 0 0 0 wakeup-0=2 cc1-15277 0 169 0 0 0 wakeup-0=169 date-18317 0 1 0 0 0 wakeup-0=1 cc1-15274 0 197 0 0 0 wakeup-0=197 cc1-30732 0 1 0 0 0 wakeup-0=1 Kswapd Kswapd Order Pages Pages Pages Instance Wakeups Re-wakeup Scanned Sync-IO ASync-IO kswapd0-311 91 24 357302 0 34233 wake-0=31 wake-1=1 wake-9=59 rewake-0=10 rewake-1=1 rewake-9=13 Summary Direct reclaims: 291 Direct reclaim pages scanned: 437794 Direct reclaim write sync I/O: 6295 Direct reclaim write async I/O: 46446 Wake kswapd requests: 2152 Time stalled direct reclaim: 519.163009000002 ms Kswapd wakeups: 91 Kswapd pages scanned: 357302 Kswapd reclaim write sync I/O: 0 Kswapd reclaim write async I/O: 34233 Time kswapd awake: 5282.749757 ms Signed-off-by: Mel Gorman <mel@csn.ul.ie> Acked-by: Rik van Riel <riel@redhat.com> Acked-by: Larry Woodman <lwoodman@redhat.com> Cc: Dave Chinner <david@fromorbit.com> Cc: Chris Mason <chris.mason@oracle.com> Cc: Nick Piggin <npiggin@suse.de> Cc: Rik van Riel <riel@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Christoph Hellwig <hch@infradead.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Michael Rubin <mrubin@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tracing/documentation: Document dynamic ftracer internalsMike Frysinger2010-07-211-5/+148
| | | | | | | | Add more details to the dynamic function tracing design implementation. Signed-off-by: Mike Frysinger <vapier@gentoo.org> LKML-Reference: <1279610015-10250-1-git-send-email-vapier@gentoo.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* tracing/kprobes: Support "string" typeMasami Hiramatsu2010-07-051-1/+1
| | | | | | | | | | | | | | | | | | | Support string type tracing and printing in kprobe-tracer. This allows user to trace string data in kernel including __user data. Note that sometimes __user data may not be accessed if it is paged-out (sorry, but kprobes operation should be done in atomic, we can not wait for page-in). Commiter note: Fixed up conflicts with b7e2ece. Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20100519195724.2885.18788.stgit@localhost6.localdomain6> Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tracing: Remove kmemtrace ftrace pluginLi Zefan2010-06-091-126/+0
| | | | | | | | | | | | | | We have been resisting new ftrace plugins and removing existing ones, and kmemtrace has been superseded by kmem trace events and perf-kmem, so we remove it. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: Ingo Molnar <mingo@elte.hu> Cc: Steven Rostedt <rostedt@goodmis.org> [ remove kmemtrace from the makefile, handle slob too ] Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2010-05-201-4/+4
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (44 commits) vlynq: make whole Kconfig-menu dependant on architecture add descriptive comment for TIF_MEMDIE task flag declaration. EEPROM: max6875: Header file cleanup EEPROM: 93cx6: Header file cleanup EEPROM: Header file cleanup agp: use NULL instead of 0 when pointer is needed rtc-v3020: make bitfield unsigned PCI: make bitfield unsigned jbd2: use NULL instead of 0 when pointer is needed cciss: fix shadows sparse warning doc: inode uses a mutex instead of a semaphore. uml: i386: Avoid redefinition of NR_syscalls fix "seperate" typos in comments cocbalt_lcdfb: correct sections doc: Change urls for sparse Powerpc: wii: Fix typo in comment i2o: cleanup some exit paths Documentation/: it's -> its where appropriate UML: Fix compiler warning due to missing task_struct declaration UML: add kernel.h include to signal.c ...
| * Fix typos in commentsThomas Weber2010-03-161-4/+4
| | | | | | | | | | | | | | | | | | | | | | [Ss]ytem => [Ss]ystem udpate => update paramters => parameters orginal => original Signed-off-by: Thomas Weber <swirl@gmx.li> Acked-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | Merge branch 'tracing-core-for-linus' of ↵Linus Torvalds2010-05-182-3/+50
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: tracing: Fix "integer as NULL pointer" warning. tracing: Fix tracepoint.h DECLARE_TRACE() to allow more than one header tracing: Make the documentation clear on trace_event boot option ring-buffer: Wrap open-coded WARN_ONCE tracing: Convert nop macros to static inlines tracing: Fix sleep time function profiling tracing: Show sample std dev in function profiling tracing: Add documentation for trace commands mod, traceon/traceoff ring-buffer: Make benchmark handle missed events ring-buffer: Make non-consuming read less expensive with lots of cpus. tracing: Add graph output support for irqsoff tracer tracing: Have graph flags passed in to ouput functions tracing: Add ftrace events for graph tracer tracing: Dump either the oops's cpu source or all cpus buffers tracing: Fix uninitialized variable of tracing/trace output
| * | tracing: Make the documentation clear on trace_event boot optionLi Zefan2010-05-041-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | Make it clear that event-list is a comma separated list of events. Reported-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> LKML-Reference: <4B2F154C.2060503@cn.fujitsu.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | tracing: Add documentation for trace commands mod, traceon/traceoffChase Douglas2010-04-271-0/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The mod command went in as commit 64e7c440618998fd69eee6ab490b042d12248021 The traceon/traceoff commands went in as commit 23b4ff3aa479c9e3bb23cb6b2d0a97878399784a Signed-off-by: Chase Douglas <chase.douglas@canonical.com> LKML-Reference: <1272045759-32018-1-git-send-email-chase.douglas@canonical.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | tracing: Dump either the oops's cpu source or all cpus buffersFrederic Weisbecker2010-04-211-2/+4
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ftrace_dump_on_oops kernel parameter, sysctl and sysrq let one dump every cpu buffers when an oops or panic happens. It's nice when you have few cpus but it may take ages if have many, plus you miss the real origin of the problem in all the cpu traces. Sometimes, all you need is to dump the cpu buffer that triggered the opps, most of the time it is our main interest. This patch modifies ftrace_dump_on_oops to handle this choice. The ftrace_dump_on_oops kernel parameter, when it comes alone, has the same behaviour than before. But ftrace_dump_on_oops=orig_cpu will only dump the buffer of the cpu that oops'ed. Similarly, sysctl kernel.ftrace_dump_on_oops=1 and echo 1 > /proc/sys/kernel/ftrace_dump_on_oops keep their previous behaviour. But setting 2 jumps into cpu origin dump mode. v2: Fix double setup v3: Fix spelling issues reported by Randy Dunlap v4: Also update __ftrace_dump in the selftests Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
* | tracing/kprobes: Support basic types on dynamic eventsMasami Hiramatsu2010-04-141-1/+3
|/ | | | | | | | | | | | | | | | | | | | | | | Support basic types of integer (u8, u16, u32, u64, s8, s16, s32, s64) in kprobe tracer. With this patch, users can specify above basic types on each arguments after ':'. If omitted, the argument type is set as unsigned long (u32 or u64, arch-dependent). e.g. echo 'p account_system_time+0 hardirq_offset=%si:s32' > kprobe_events adds a probe recording hardirq_offset in signed-32bits value on the entry of account_system_time. Cc: Ingo Molnar <mingo@elte.hu> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20100412171708.3790.18599.stgit@localhost6.localdomain6> Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* Merge branch 'for-next' into for-linusJiri Kosina2010-03-081-1/+1
|\ | | | | | | | | | | | | | | | | Conflicts: Documentation/filesystems/proc.txt arch/arm/mach-u300/include/mach/debug-macro.S drivers/net/qlge/qlge_ethtool.c drivers/net/qlge/qlge_main.c drivers/net/typhoon.c
| * tree-wide: Assorted spelling fixesDaniel Mack2010-02-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | In particular, several occurances of funny versions of 'success', 'unknown', 'therefore', 'acknowledge', 'argument', 'achieve', 'address', 'beginning', 'desirable', 'separate' and 'necessary' are fixed. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Joe Perches <joe@perches.com> Cc: Junio C Hamano <gitster@pobox.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | Merge branch 'perf-core-for-linus' of ↵Linus Torvalds2010-02-281-25/+32
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (172 commits) perf_event, amd: Fix spinlock initialization perf_event: Fix preempt warning in perf_clock() perf tools: Flush maps on COMM events perf_events, x86: Split PMU definitions into separate files perf annotate: Handle samples not at objdump output addr boundaries perf_events, x86: Remove superflous MSR writes perf_events: Simplify code by removing cpu argument to hw_perf_group_sched_in() perf_events, x86: AMD event scheduling perf_events: Add new start/stop PMU callbacks perf_events: Report the MMAP pgoff value in bytes perf annotate: Defer allocating sym_priv->hist array perf symbols: Improve debugging information about symtab origins perf top: Use a macro instead of a constant variable perf symbols: Check the right return variable perf/scripts: Tag syscall_name helper as not yet available perf/scripts: Add perf-trace-python Documentation perf/scripts: Remove unnecessary PyTuple resizes perf/scripts: Add syscall tracing scripts perf/scripts: Add Python scripting engine perf/scripts: Remove check-perf-trace from listed scripts ... Fix trivial conflict in tools/perf/util/probe-event.c
| * | kprobetrace, doc: Add the explanation to remove probe pointsMotohiro KOSAKI2010-01-201-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Latest kprobetrace can remove probe points selectively, thus the documentation should be updated too. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: systemtap <systemtap@sources.redhat.com> Cc: DLE <dle-develop@lists.sourceforge.net> LKML-Reference: <20100119023512.31880.35535.stgit@localhost6.localdomain6> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | kprobetrace, doc: Shell needs single quote to use $ characterMotohiro KOSAKI2010-01-201-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Shell interprets $val as shell variable, thus we need quote if we use the echo command. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: systemtap <systemtap@sources.redhat.com> Cc: DLE <dle-develop@lists.sourceforge.net> LKML-Reference: <20100119023505.31880.17367.stgit@localhost6.localdomain6> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | tracing/kprobe: Drop function argument access syntaxMasami Hiramatsu2010-01-131-11/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drop function argument access syntax, because the function arguments depend on not only architecture but also compile-options and function API. And now, we have perf-probe for finding register/memory assigned to each argument. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: systemtap <systemtap@sources.redhat.com> Cc: DLE <dle-develop@lists.sourceforge.net> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Roland McGrath <roland@redhat.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Michael Neuling <mikey@neuling.org> Cc: linuxppc-dev@ozlabs.org LKML-Reference: <20100105224648.19431.52309.stgit@dhcp-100-2-132.bos.redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | tracing/kprobe: Update example output in documentationMasami Hiramatsu2010-01-131-16/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update example output in documentation according to current implementation. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: systemtap <systemtap@sources.redhat.com> Cc: DLE <dle-develop@lists.sourceforge.net> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20100105224641.19431.34967.stgit@dhcp-100-2-132.bos.redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | Merge branch 'tracing/core' of ↵Ingo Molnar2010-02-271-3/+2
|\ \ \ | |_|/ |/| | | | | git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into tracing/core
| * | tracing: Unify arch_syscall_addr() implementationsMike Frysinger2010-02-171-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Most implementations of arch_syscall_addr() are the same, so create a default version in common code and move the one piece that differs (the syscall table) to asm/syscall.h. New arch ports don't have to waste time copying & pasting this simple function. The s390/sparc versions need to be different, so document why. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <1264498803-17278-1-git-send-email-vapier@gentoo.org> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
* | | tracing/documentation: Cover new frame pointer semanticsMike Frysinger2010-01-261-3/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update the graph tracer examples to cover the new frame pointer semantics (in terms of passing it along). Move the HAVE_FUNCTION_GRAPH_FP_TEST docs out of the Kconfig, into the right place, and expand on the details. Signed-off-by: Mike Frysinger <vapier@gentoo.org> LKML-Reference: <1264165967-18938-1-git-send-email-vapier@gentoo.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | | tracing/documentation: Fix a typo in ftrace.txtYang Hongyang2010-01-261-1/+1
| |/ |/| | | | | | | | | | | | | | | | | | | 'ftrace' is no longer the name of the function tracer, to activate the function trace 'echo function > current_tracer' is to be used instead of 'echo ftrace > current_tracer'. Update the documentation to reflect the current implementation. Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com> LKML-Reference: <4B5D0BA8.20106@cn.fujitsu.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | Documentation: update ring-buffer-design.txtRandy Dunlap2010-01-111-28/+28
|/ | | | | | | | | | Fix typos, grammos, spellos, hyphenation. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'tracing-fixes-for-linus' of ↵Linus Torvalds2009-12-313-44/+45
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: tracing: Fix sign fields in ftrace_define_fields_##call() tracing/syscalls: Fix typo in SYSCALL_DEFINE0 tracing/kprobe: Show sign of fields in trace_kprobe format files ksym_tracer: Remove trace_stat ksym_tracer: Fix race when incrementing count ksym_tracer: Fix to allow writing newline to ksym_trace_filter ksym_tracer: Fix to make the tracer work tracing: Kconfig spelling fixes and cleanups tracing: Fix setting tracer specific options Documentation: Update ftrace-design.txt Documentation: Update tracepoint-analysis.txt Documentation: Update mmiotrace.txt
| * Documentation: Update ftrace-design.txtRandy Dunlap2009-12-201-7/+7
| | | | | | | | | | | | | | | | | | | | Correct grammos. Spell out words. Add missing words. Consistent use of "mcount()" function name. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <4B2C0D78.6060707@oracle.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * Documentation: Update tracepoint-analysis.txtRandy Dunlap2009-12-201-30/+30
| | | | | | | | | | | | | | | | | | | | | | Fix grammar, spelling, punctuation, hyphenation, section numbering. Tell what PCL means. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Steven Rostedt <rostedt@goodmis.org> LKML-Reference: <4B2C0D70.4030707@oracle.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * Documentation: Update mmiotrace.txtRandy Dunlap2009-12-201-7/+8
| | | | | | | | | | | | | | | | | | | | | | | | Fix typos, spellos, hyphenation, line lengths. BTW: are there some userspace tools? There is a reference to some at the wiki page, but there are no tools listed there. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Pekka Paalanen <pq@iki.fi> LKML-Reference: <4B2C0D68.6080401@oracle.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | mm tracing: cleanup Documentation/trace/events-kmem.txtRandy Dunlap2009-12-221-7/+7
|/ | | | | | | | | Clean up typos/grammos/spellos in events-kmem.txt. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'perf/core' into perf/probesIngo Molnar2009-11-171-0/+2
|\ | | | | | | | | | | | | | | Resolved merge conflict in tools/perf/Makefile Merge reason: we want to queue up a dependent patch. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * Merge commit 'v2.6.32-rc6' into perf/coreIngo Molnar2009-11-041-0/+2
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: tools/perf/Makefile Merge reason: Resolve the conflict, merge to upstream and merge in perf fixes so we can add a dependent patch. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * tracing: Fix comment typo and documentation exampleJiri Olsa2009-10-241-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Trivial patch to fix a documentation example and to fix a comment. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20091023233646.871719877@goodmis.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | tracing/kprobes: Rename Kprobe-tracer to kprobe-eventMasami Hiramatsu2009-11-041-18/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rename Kprobes-based event tracer to kprobes-based tracing event (kprobe-event), since it is not a tracer but an extensible tracing event interface. This also changes CONFIG_KPROBE_TRACER to CONFIG_KPROBE_EVENT and sets it y by default. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Frank Ch. Eigler <fche@redhat.com> Cc: Jason Baron <jbaron@redhat.com> Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> LKML-Reference: <20091104001247.3454.14131.stgit@harusame> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | Merge branch 'perf/core' into perf/probesIngo Molnar2009-10-231-2/+11
|\ \ \ | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: tools/perf/Makefile Merge reason: - fix the conflict - pick up the pr_*() infrastructure to queue up dependent patch Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | tracing: Document HAVE_SYSCALL_TRACEPOINTS needsFrederic Weisbecker2009-10-141-2/+11
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Document the arch needed requirements to get the support for syscalls tracing. v2: HAVE_FTRACE_SYSCALLS have been changed to HAVE_SYSCALL_TRACEPOINTS recently. Update this config name in the documentation then. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Masami Hiramatsu <mhiramat@redhat.com> Cc: Jason Baron <jbaron@redhat.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org>
* | tracing/kprobes: Make special variable names more self-explainableMasami Hiramatsu2009-10-121-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rename special variables to more self-explainable names as below: - $rv to $retval - $sa to $stack - $aN to $argN - $sN to $stackN Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Christoph Hellwig <hch@infradead.org> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Frank Ch. Eigler <fche@redhat.com> LKML-Reference: <20091007222759.1684.3319.stgit@dhcp-100-2-132.bos.redhat.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
* | tracing/kprobes: Remove '$ra' special variableMasami Hiramatsu2009-10-121-7/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove '$ra' (return address) because it is already shown at the head of each entry. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Christoph Hellwig <hch@infradead.org> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Frank Ch. Eigler <fche@redhat.com> LKML-Reference: <20091007222748.1684.12711.stgit@dhcp-100-2-132.bos.redhat.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
* | tracing/kprobes: Add $ prefix to special variablesMasami Hiramatsu2009-10-121-10/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add $ prefix to the special variables(e.g. sa, rv) of kprobe-tracer. This resolves consistency issues between kprobe_events and perf-kprobe. The main goal is to avoid conflicts between local variable names of probed functions, used by perf probe, and special variables used in the kprobe event creation interface (stack values, etc...) and also available from perf probe. ie: we don't want rv (return value) to conflict with a local variable named rv in a probed function. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Christoph Hellwig <hch@infradead.org> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Frank Ch. Eigler <fche@redhat.com> LKML-Reference: <20091007222740.1684.91170.stgit@dhcp-100-2-132.bos.redhat.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
* | Merge commit 'linus/master' into tracing/kprobesFrederic Weisbecker2009-09-237-32/+1288
|\ \ | |/ | | | | | | | | | | | | | | | | | | Conflicts: kernel/trace/Makefile kernel/trace/trace.h kernel/trace/trace_event_types.h kernel/trace/trace_export.c Merge reason: Sync with latest significant tracing core changes.
| * Merge branch 'for-linus' of ↵Linus Torvalds2009-09-222-2/+2
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (34 commits) trivial: fix typo in aic7xxx comment trivial: fix comment typo in drivers/ata/pata_hpt37x.c trivial: typo in kernel-parameters.txt trivial: fix typo in tracing documentation trivial: add __init/__exit macros in drivers/gpio/bt8xxgpio.c trivial: add __init macro/ fix of __exit macro location in ipmi_poweroff.c trivial: remove unnecessary semicolons trivial: Fix duplicated word "options" in comment trivial: kbuild: remove extraneous blank line after declaration of usage() trivial: improve help text for mm debug config options trivial: doc: hpfall: accept disk device to unload as argument trivial: doc: hpfall: reduce risk that hpfall can do harm trivial: SubmittingPatches: Fix reference to renumbered step trivial: fix typos "man[ae]g?ment" -> "management" trivial: media/video/cx88: add __init/__exit macros to cx88 drivers trivial: fix typo in CONFIG_DEBUG_FS in gcov doc trivial: fix missing printk space in amd_k7_smp_check trivial: fix typo s/ketymap/keymap/ in comment trivial: fix typo "to to" in multiple files trivial: fix typos in comments s/DGBU/DBGU/ ...
| | * trivial: fix typo in tracing documentationMichal Sojka2009-09-211-1/+1
| | | | | | | | | | | | | | | Signed-off-by: Michal Sojka <sojkam1@fel.cvut.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| | * trivial: fix typos "man[ae]g?ment" -> "management"Uwe Kleine-Koenig2009-09-211-1/+1
| | | | | | | | | | | | | | | Signed-off-by: Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * | tracing, documentation: Add a document on the kmem tracepointsMel Gorman2009-09-221-0/+107
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Knowing tracepoints exist is not quite the same as knowing what they should be used for. This patch adds a document giving a basic description of the kmem tracepoints and why they might be useful to a performance analyst. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Cc: Rik van Riel <riel@redhat.com> Reviewed-by: Ingo Molnar <mingo@elte.hu> Cc: Larry Woodman <lwoodman@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Li Ming Chun <macli@brc.ubc.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | tracing, documentation: add a document describing how to do some performance ↵Mel Gorman2009-09-221-0/+327
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | analysis with tracepoints The documentation for ftrace, events and tracepoints is pretty extensive. Similarly, the perf PCL tools help files --help are there and the code simple enough to figure out what much of the switches mean. However, pulling the discrete bits and pieces together and translating that into "how do I solve a problem" requires a fair amount of imagination. This patch adds a simple document intended to get someone started on the Signed-off-by: Mel Gorman <mel@csn.ul.ie> Cc: Rik van Riel <riel@redhat.com> Reviewed-by: Ingo Molnar <mingo@elte.hu> Cc: Larry Woodman <lwoodman@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Li Ming Chun <macli@brc.ubc.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | tracing, page-allocator: add a postprocessing script for ↵Mel Gorman2009-09-221-0/+418
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | page-allocator-related ftrace events This patch adds a simple post-processing script for the page-allocator-related trace events. It can be used to give an indication of who the most allocator-intensive processes are and how often the zone lock was taken during the tracing period. Example output looks like Process Pages Pages Pages Pages PCPU PCPU PCPU Fragment Fragment MigType Fragment Fragment Unknown details allocd allocd freed freed pages drains refills Fallback Causing Changed Severe Moderate under lock direct pagevec drain swapper-0 0 0 2 0 0 0 0 0 0 0 0 0 0 Xorg-3770 10603 5952 3685 6978 5996 194 192 0 0 0 0 0 0 modprobe-21397 51 0 0 86 31 1 0 0 0 0 0 0 0 xchat-5370 228 93 0 0 0 0 3 0 0 0 0 0 0 awesome-4317 32 32 0 0 0 0 32 0 0 0 0 0 0 thinkfan-3863 2 0 1 1 0 0 0 0 0 0 0 0 0 hald-addon-stor-3935 2 0 0 0 0 0 0 0 0 0 0 0 0 akregator-4506 1 1 0 0 0 0 1 0 0 0 0 0 0 xmms-14888 0 0 1 0 0 0 0 0 0 0 0 0 0 khelper-12 1 0 0 0 0 0 0 0 0 0 0 0 0 Optionally, the output can include information on the parent or aggregate based on process name instead of aggregating based on each pid. Example output including parent information and stripped out the PID looks something like; Process Pages Pages Pages Pages PCPU PCPU PCPU Fragment Fragment MigType Fragment Fragment Unknown details allocd allocd freed freed pages drains refills Fallback Causing Changed Severe Moderate under lock direct pagevec drain gdm-3756 :: Xorg-3770 3796 2976 99 3813 3224 104 98 0 0 0 0 0 0 init-1 :: hald-3892 1 0 0 0 0 0 0 0 0 0 0 0 0 git-21447 :: editor-21448 4 0 4 0 0 0 0 0 0 0 0 0 0 This says that Xorg allocated 3796 pages and it's parent process is gdm with a PID of 3756; The postprocessor parses the text output of tracing. While there is a binary format, the expectation is that the binary output can be readily translated into text and post-processed offline. Obviously if the text format changes, the parser will break but the regular expression parser is fairly rudimentary so should be readily adjustable. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Cc: Rik van Riel <riel@redhat.com> Reviewed-by: Ingo Molnar <mingo@elte.hu> Cc: Larry Woodman <lwoodman@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Li Ming Chun <macli@brc.ubc.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * tracing, perf: Convert the power tracer into an event tracerArjan van de Ven2009-09-191-17/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch converts the existing power tracer into an event tracer, so that power events (C states and frequency changes) can be tracked via "perf". This also removes the perl script that was used to demo the tracer; its functionality is being replaced entirely with timechart. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20090912130542.6d314860@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * Merge branch 'linus' into tracing/coreIngo Molnar2009-09-171-12/+12
| |\ | | | | | | | | | | | | | | | Merge reason: Pick up kernel/softirq.c update for dependent fix. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * debugfs: Fix mount directory of debugfs by default in events.txtGeunSik Lim2009-09-151-12/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | We need common default directory of denbugfs for consistency. (debugfs's default directory is /sys/kernel/debug/ by debugfs.) Signed-off-by: GeunSik Lim <geunsik.lim@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * | ftrace: document function and function graph implementationMike Frysinger2009-09-142-0/+239
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While implementing function tracer and function tracer graph support, I found the exact arch implementation details to be a bit lacking (and my x86 foo ain't great). So after pounding out support for the Blackfin arch, start documenting the requirements/details. Signed-off-by: Mike Frysinger <vapier@gentoo.org> LKML-Reference: <1252973415-21264-1-git-send-email-vapier@gentoo.org> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | tracing/filters: add filter DocumentationTom Zanussi2009-09-121-1/+183
| |/ | | | | | | | | | | | | | | | | | | | | | | Documentation for event filters and formats. v2 changes: fix a few problems noticed by Randy Dunlap. Reviewed-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <1252642431.8016.9.camel@tropicana> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* | tracing/kprobes: Disable kprobe events by default after creationMasami Hiramatsu2009-09-171-2/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Disable newly created kprobe events by default, not to disturb another user using ftrace. "Disturb" means when someone is using ftrace and another user tries to use perf-tools, (in near future) if he defines new kprobe event via perf-tools, then new events will mess up the frace buffer. Fix this to allow proper and transparent kprobes events concurrent usage between ftrace users and perf users. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Frank Ch. Eigler <fche@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jason Baron <jbaron@redhat.com> Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <20090914204937.18779.59422.stgit@dhcp-100-2-132.bos.redhat.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
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