)]}' { "log": [ { "commit": "8aef2d2856158a36c295a8d1288281e4839bff13", "tree": "eef85397dedcad001982724e0be2da6dc089b39f", "parents": [ "05ce5818adee8f8efd0a5ca0d900a6789012516b" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 24 01:10:15 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 24 09:33:30 2009 -0400" }, "message": "function-graph: ignore times across schedule\n\nImpact: more accurate timings\n\nThe current method of function graph tracing does not take into\naccount the time spent when a task is not running. This shows functions\nthat call schedule have increased costs:\n\n 3) + 18.664 us | }\n ------------------------------------------\n 3) \u003cidle\u003e-0 \u003d\u003e kblockd-123\n ------------------------------------------\n\n 3) | finish_task_switch() {\n 3) 1.441 us | _spin_unlock_irq();\n 3) 3.966 us | }\n 3) ! 2959.433 us | }\n 3) ! 2961.465 us | }\n\nThis patch uses the tracepoint in the scheduling context switch to\naccount for time that has elapsed while a task is scheduled out.\nNow we see:\n\n ------------------------------------------\n 3) \u003cidle\u003e-0 \u003d\u003e edac-po-1067\n ------------------------------------------\n\n 3) | finish_task_switch() {\n 3) 0.685 us | _spin_unlock_irq();\n 3) 2.331 us | }\n 3) + 41.439 us | }\n 3) + 42.663 us | }\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "05ce5818adee8f8efd0a5ca0d900a6789012516b", "tree": "81c90288dd1da4291b5e3ee154756b2d7745c248", "parents": [ "5d1a03dc541dc6672e60e57249ed22f40654ca47" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 24 00:18:31 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 24 09:32:52 2009 -0400" }, "message": "function-graph: prevent more than one tracer registering\n\nImpact: prevent crash due to multiple function graph tracers\n\nThe function graph tracer can currently only handle a single tracer\nbeing registered. If another tracer registers with the function\ngraph tracer it can crash the system.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "5d1a03dc541dc6672e60e57249ed22f40654ca47", "tree": "0b72061cc8c56797474d2efbfe1954ce0ad27ce8", "parents": [ "098335215a4921a8a54193829eaed602dca24df5" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon Mar 23 23:38:49 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 24 09:31:34 2009 -0400" }, "message": "function-graph: moved the timestamp from arch to generic code\n\nThis patch move the timestamp from happening in the arch specific\ncode into the general code. This allows for better control by the tracer\nto time manipulation.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "098335215a4921a8a54193829eaed602dca24df5", "tree": "86226d7e4229f00e467b5e6ed7f048a2061c3042", "parents": [ "45b9560895b07a4a09d55d49235c984db512c5aa" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Sat Mar 21 02:44:50 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 24 09:07:35 2009 -0400" }, "message": "tracing: fix memory leak in trace_stat\n\nIf the function profiler does not have any items recorded and one were\nto cat the function stat file, the kernel would take a BUG with a NULL\npointer dereference.\n\nLooking further into this, I found that returning NULL from stat_start\ndid not stop the stat logic, and would later call stat_next. This breaks\nfrom the way seq_file works, so I looked into fixing the stat code.\n\nThis is where I noticed that the last next_entry is never freed.\nIt is allocated, and if the stat_next returns NULL, the code breaks out\nof the loop, unlocks the mutex and exits. We never link the next_entry\nnor do we free it. Thus it is a real memory leak.\n\nThis patch rearranges the code a bit to not only fix the memory leak,\nbut also to act more like seq_file where nothing is printed if there\nis nothing to print. That is, stat_start returns NULL.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "45b9560895b07a4a09d55d49235c984db512c5aa", "tree": "327ccd6be20791915007137c7db64361c1eef6e6", "parents": [ "3e1f60b80cafcb5d7e8d3665b35962fbb8fb9efa" ], "author": { "name": "Anton Vorontsov", "email": "avorontsov@ru.mvista.com", "time": "Tue Mar 24 01:07:24 2009 +0300" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Mar 23 23:23:03 2009 +0100" }, "message": "tracing: Fix TRACING_SUPPORT dependency for PPC32\n\ncommit 40ada30f9621fbd831ac2437b9a2a399aa (\"tracing: clean up menu\"),\ndespite the \"clean up\" in its purpose, introduced a behavioural\nchange for Kconfig symbols: we no longer able to select tracing\nsupport on PPC32 (because IRQFLAGS_SUPPORT isn\u0027t yet implemented).\n\nThe IRQFLAGS_SUPPORT is not mandatory for most tracers, tracing core\nhas a special case for platforms w/o irqflags (which, by the way, has\nbecome useless as of the commit above).\n\nThough according to Ingo Molnar, there was periodic build failures on\nweird, unmaintained architectures that had no irqflags-tracing support\nand hence didn\u0027t know the raw_irqs_save/restore primitives. Thus we\u0027d\nbetter not enable irqflags-less tracing for all architectures.\n\nThis patch restores the old behaviour for PPC32, and thus brings the\ntracing back. Other architectures can either add themselves to the\nexception list or (better) implement TRACE_IRQFLAGS_SUPPORT.\n\nSigned-off-by: Anton Vorontsov \u003cavorontsov@ru.mvista.com\u003e\nAcked-b: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: linuxppc-dev@ozlabs.org\nLKML-Reference: \u003c20090323220724.GA9851@oksana.dev.rtsoft.ru\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "3e1f60b80cafcb5d7e8d3665b35962fbb8fb9efa", "tree": "80b07264a2599f494f9f8eebb7230ceead3ae645", "parents": [ "c0f92ba99bdeaf35f9c580291b4e1a657c67fbd4" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Sun Mar 22 23:10:45 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Mar 23 16:25:47 2009 +0100" }, "message": "tracing/ftrace: check if debugfs is registered before creating files\n\nImpact: fix a crash with ftrace\u003d{nop,boot} parameter\n\nIf the nop or initcall tracers are launched as boot tracers,\nthey will attempt to create their option directory and files.\nBut these tracers are registered very early and then assigned\nas \"boot tracers\" very early if asked to.\n\nSince they do this before debugfs has been registered (core initcall),\na crash is triggered.\n\nAnother early tracers could also come later. So we fix it by\nchecking if debugfs is initialized before creating the root\ntracing directory.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Greg Kroah-Hartman \u003cgregkh@suse.de\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nLKML-Reference: \u003c1237759847-21025-3-git-send-email-fweisbec@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "b8b94265337f83b7db9c5f429b1769d463d7da8c", "tree": "231694bce8acda1204f95c1991f7f5b7ce5528bd", "parents": [ "a524446fe82f7f38738403a5a080c4910af86a61" ], "author": { "name": "Dmitri Vorobiev", "email": "dmitri.vorobiev@movial.com", "time": "Sun Mar 22 19:11:11 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Mar 22 18:16:54 2009 +0100" }, "message": "tracing: fix four sparse warnings\n\nImpact: cleanup.\n\nThis patch fixes the following sparse warnings:\n\n kernel/trace/trace.c:385:9: warning: symbol \u0027trace_seq_to_buffer\u0027 was\n not declared. Should it be static?\n\n kernel/trace/trace_clock.c:29:13: warning: symbol \u0027trace_clock_local\u0027\n was not declared. Should it be static?\n\n kernel/trace/trace_clock.c:54:13: warning: symbol \u0027trace_clock\u0027 was not\n declared. Should it be static?\n\n kernel/trace/trace_clock.c:74:13: warning: symbol \u0027trace_clock_global\u0027\n was not declared. Should it be static?\n\nSigned-off-by: Dmitri Vorobiev \u003cdmitri.vorobiev@movial.com\u003e\nLKML-Reference: \u003c1237741871-5827-4-git-send-email-dmitri.vorobiev@movial.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "a524446fe82f7f38738403a5a080c4910af86a61", "tree": "d15127a183d1c2f864136389e5a758ed80a29449", "parents": [ "0cf53ff62b3e9e491ff5e5f05b193fb6ce643047", "09c9e84d474d917d9de5b9011ed2064b03a19677", "505f2b970b2269ce4cb669b3ff4f6479d379cec2" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Mar 22 18:10:02 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Mar 22 18:10:02 2009 +0100" }, "message": "Merge branches \u0027tracing/ftrace\u0027, \u0027tracing/hw-breakpoints\u0027, \u0027tracing/ring-buffer\u0027, \u0027tracing/textedit\u0027 and \u0027linus\u0027 into tracing/core\n" }, { "commit": "0cf53ff62b3e9e491ff5e5f05b193fb6ce643047", "tree": "3a184041819aa922f3b7505fda803e649ee2786a", "parents": [ "cf586b61f80229491127d3c57c06ed93c9f530d3" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Sun Mar 22 15:13:07 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Mar 22 15:17:21 2009 +0100" }, "message": "tracing: keep the tracing buffer after self-test failure\n\nInstead of using ftrace_dump_on_oops, it\u0027s far more convenient\nto have the trace leading up to a self-test failure available\nin /debug/tracing/trace.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nLKML-Reference: \u003c1237694675-23509-1-git-send-email-fweisbec@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "cf586b61f80229491127d3c57c06ed93c9f530d3", "tree": "3f5e0d9429f32b8ad4f53104a260c8dff349cd9b", "parents": [ "ac199db0189c091f2863312061c0575937f68810" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Sun Mar 22 05:04:35 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Mar 22 14:06:40 2009 +0100" }, "message": "tracing/function-graph-tracer: prevent hangs during self-tests\n\nImpact: detect tracing related hangs\n\nSometimes, with some configs, the function graph tracer can make\nthe timer interrupt too much slow, hanging the kernel in an endless\nloop of timer interrupts servicing.\n\nAs suggested by Ingo, this patch brings a watchdog which stops the\nselftest after a defined number of functions traced, definitely\ndisabling this tracer.\n\nFor those who want to debug the cause of the function graph trace\nhang, you can pass the ftrace_dump_on_oops kernel parameter to dump\nthe traces after this hang detection.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nLKML-Reference: \u003c1237694675-23509-1-git-send-email-fweisbec@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "09c9e84d474d917d9de5b9011ed2064b03a19677", "tree": "c725429e52c2c06822f189d05c8fe9d811e17891", "parents": [ "22de89b371a18086162eacd9f8c960299334ab01" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Sat Mar 21 04:33:36 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Mar 21 10:54:10 2009 +0100" }, "message": "tracing/ring-buffer: don\u0027t annotate rb_cpu_notify with __cpuinit\n\nImpact: remove a section warning\n\nCONFIG_DEBUG_SECTION_MISMATCH raises the following warning on -tip:\n\n WARNING: kernel/trace/built-in.o(.text+0x5bc5): Section mismatch in\n reference from the function ring_buffer_alloc() to the function\n .cpuinit.text:rb_cpu_notify()\n The function ring_buffer_alloc() references\n the function __cpuinit rb_cpu_notify().\n\nThis is actually harmless. The code in the ring buffer don\u0027t build\nrb_cpu_notify and other cpu hotplug stuffs when !CONFIG_HOTPLUG_CPU\nso we have no risk to reference freed memory here (it would even\nbe harmless if we unconditionally build it because register_cpu_notifier\nwould do nothing when !CONFIG_HOTPLUG_CPU.\n\nBut since ring_buffer_alloc() can be called everytime, we don\u0027t want it\nto be annotated with __cpuinit so we drop the __cpuinit from\nrb_cpu_notify.\n\nThis is not a waste of memory because it is only defined and used on\nCONFIG_HOTPLUG_CPU.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nLKML-Reference: \u003c1237606416-22268-1-git-send-email-fweisbec@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "505f2b970b2269ce4cb669b3ff4f6479d379cec2", "tree": "741b9ed4752d852eb8b01dd4b4be765c9f37015e", "parents": [ "22de89b371a18086162eacd9f8c960299334ab01" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 20 11:05:04 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 20 11:09:27 2009 +0100" }, "message": "tracing, Text Edit Lock - kprobes architecture independent support, nommu fix\n\nImpact: build fix on SH !CONFIG_MMU\n\nStephen Rothwell reported this linux-next build failure on the SH\narchitecture:\n\n kernel/built-in.o: In function `disable_all_kprobes\u0027:\n kernel/kprobes.c:1382: undefined reference to `text_mutex\u0027\n [...]\n\nAnd observed:\n\n| Introduced by commit 4460fdad85becd569f11501ad5b91814814335ff (\"tracing,\n| Text Edit Lock - kprobes architecture independent support\") from the\n| tracing tree. text_mutex is defined in mm/memory.c which is only built\n| if CONFIG_MMU is defined, which is not true for sh allmodconfig.\n\nMove this lock to kernel/extable.c (which is already home to various\nkernel text related routines), which file is always built-in.\n\nReported-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nLKML-Reference: \u003c20090320110602.86351a91.sfr@canb.auug.org.au\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "ac199db0189c091f2863312061c0575937f68810", "tree": "0068aaa77ca00102ca60754eb32329f06821bba0", "parents": [ "28bea271e58e429eccfad3d7ee2ad12d6ee015bf" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Thu Mar 19 20:26:15 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 20 10:17:07 2009 +0100" }, "message": "ftrace: event profile hooks\n\nImpact: new tracing infrastructure feature\n\nProvide infrastructure to generate software perf counter events\nfrom tracepoints.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nLKML-Reference: \u003c20090319194233.557364871@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "28bea271e58e429eccfad3d7ee2ad12d6ee015bf", "tree": "00b5cf70bf147e7fad3b438835d21b093a2b9c28", "parents": [ "23725aeeab10ba02bcf10ec49ad73146b54cb52f" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Thu Mar 19 20:26:14 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 20 10:17:06 2009 +0100" }, "message": "ftrace: ensure every event gets an id\n\nImpact: widen user-space visibe event IDs to all events\n\nPreviously only TRACE_EVENT events got ids, because only they\ngenerated raw output which needs to be demuxed from the trace.\n\nIn order to provide a unique ID for each event, register everybody,\nregardless.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nLKML-Reference: \u003c20090319194233.464914218@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "23725aeeab10ba02bcf10ec49ad73146b54cb52f", "tree": "02d5932639e8d76be42a057d8d6ff73026949d12", "parents": [ "44fc6ee92356aa3be31798ced220ab5abd898781" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Thu Mar 19 20:26:13 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 20 10:17:05 2009 +0100" }, "message": "ftrace: provide an id file for each event\n\nSince not every event has a format file to read the id from,\nexpose it explicitly in a separate file.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nLKML-Reference: \u003c20090319194233.372534033@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "44fc6ee92356aa3be31798ced220ab5abd898781", "tree": "45acaa8fe5e620cbf734bdbeb5d48121daa65d0e", "parents": [ "22de89b371a18086162eacd9f8c960299334ab01", "5087f8d2a2f2daff5a913d72d8ea3ad601948e10" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 20 10:15:13 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 20 10:15:13 2009 +0100" }, "message": "Merge branch \u0027tip/tracing/ftrace\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into tracing/ftrace\n" }, { "commit": "22de89b371a18086162eacd9f8c960299334ab01", "tree": "518227dde7ba892413163b32341c5d319da13949", "parents": [ "3bf832ce1fe6988148d392599f34ca0c6a34427d", "f02b8624fedca39886b0eef770dca70c2f0749b3", "a635cf0497342978d417cae19d4a4823932977ff", "65c24491b4fef017c64e39ec64384fde5e05e0a0" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 20 10:14:53 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 20 10:14:53 2009 +0100" }, "message": "Merge branches \u0027tracing/ftrace\u0027, \u0027tracing/kprobes\u0027, \u0027tracing/tasks\u0027 and \u0027linus\u0027 into tracing/core\n" }, { "commit": "5087f8d2a2f2daff5a913d72d8ea3ad601948e10", "tree": "94eea3fdf8aabf361b8bcb9dac99395796aa78c6", "parents": [ "40ce74f19c28077550646c76d96a075bf312e461" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 19 15:14:46 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 19 15:58:56 2009 -0400" }, "message": "function-graph: show binary events as comments\n\nWith the added TRACE_EVENT macro, the events no longer appear in\nthe function graph tracer. This was because the function graph\ndid not know how to display the entries. The graph tracer was\nonly aware of its own entries and the printk entries.\n\nBy using the event call back feature, the graph tracer can now display\nthe events.\n\n # echo irq \u003e /debug/tracing/set_event\n\nWhich can show:\n\n 0) | handle_IRQ_event() {\n 0) | /* irq_handler_entry: irq\u003d48 handler\u003deth0 */\n 0) | e1000_intr() {\n 0) 0.926 us | __napi_schedule();\n 0) 3.888 us | }\n 0) | /* irq_handler_exit: irq\u003d48 return\u003dhandled */\n 0) 0.655 us | runqueue_is_locked();\n 0) | __wake_up() {\n 0) 0.831 us | _spin_lock_irqsave();\n\nThe irq entry and exit events show up as comments.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "40ce74f19c28077550646c76d96a075bf312e461", "tree": "bd58d38b6ac806be6f59276f16d1e0758376fa1d", "parents": [ "2fbcdb35aca614f9529a0e7d340146cf0b71684f" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 19 14:03:53 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 19 15:58:47 2009 -0400" }, "message": "tracing: remove recording function depth from trace_printk\n\nThe function depth in trace_printk was to facilitate the function\ngraph output. Now that the function graph calculates the depth within\nthe trace output, we no longer need to record the depth when the\ntrace_printk is called.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "2fbcdb35aca614f9529a0e7d340146cf0b71684f", "tree": "02b717134d9d82b1f9a7cebd4e3daccde542cf5c", "parents": [ "5ef841f6f32dce0b752a4fa0622781ee67a0e874" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 19 13:24:42 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 19 15:58:38 2009 -0400" }, "message": "function-graph: calculate function depth within function graph tracer\n\nCurrently, the function graph tracer depends on the trace_printk\nto record the depth. All the information is already there in the trace\nto calculate function depth, with the exception of having the printk\nbe the first item. But as soon as a entry or exit is reached, then\nwe know the depth.\n\nThis patch changes the iter-\u003eprivate data from recording a per cpu\nlast_pid, to a structure that holds both the last_pid and the current\ndepth. This data is used to determine the function depth for the\nprintks.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "5ef841f6f32dce0b752a4fa0622781ee67a0e874", "tree": "12c1ac0552f12b93662e2676137fb1286b50d4ee", "parents": [ "ac5f6c96859e9a664ac05b04bc96ed1caad5fe29" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 19 12:20:38 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 19 15:57:55 2009 -0400" }, "message": "tracing: make print_(b)printk_msg_only global\n\nThis patch makes print_printk_msg_only and print_bprintk_msg_only\nglobal for other functions to use. It also renames them by adding\na \"trace_\" to the beginning to avoid namespace collisions.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "3bf832ce1fe6988148d392599f34ca0c6a34427d", "tree": "692834679fa56696f9823e7c54d38cf833e86398", "parents": [ "ec625cb29e66824f7ce41082617aeb93fa4e42e2" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Thu Mar 19 14:47:33 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu Mar 19 16:41:08 2009 +0100" }, "message": "tracing/ring-buffer: fix non cpu hotplug case\n\nImpact: fix warning with irqsoff tracer\n\nThe ring buffer allocates its buffers on pre-smp time (early_initcall).\nIt means that, at first, only the boot cpu buffer is allocated and\nthe ring-buffer cpumask only has the boot cpu set (cpu_online_mask).\n\nLater, the secondary cpu will show up and the ring-buffer will be notified\nabout this event: the appropriate buffer will be allocated and the cpumask\nwill be updated.\n\nUnfortunately, if !CONFIG_CPU_HOTPLUG, the ring-buffer will not be\nnotified about the secondary cpus, meaning that the cpumask will have\nonly the cpu boot set, and only one cpu buffer allocated.\n\nWe fix that by using cpu_possible_mask if !CONFIG_CPU_HOTPLUG.\n\nThis patch fixes the following warning with irqsoff tracer running:\n\n[ 169.317794] WARNING: at kernel/trace/trace.c:466 update_max_tr_single+0xcc/0xf3()\n[ 169.318002] Hardware name: AMILO Li 2727\n[ 169.318002] Modules linked in:\n[ 169.318002] Pid: 5624, comm: bash Not tainted 2.6.29-rc8-tip-02636-g6aafa6c #11\n[ 169.318002] Call Trace:\n[ 169.318002] [\u003cffffffff81036182\u003e] warn_slowpath+0xea/0x13d\n[ 169.318002] [\u003cffffffff8100b9d6\u003e] ? ftrace_call+0x5/0x2b\n[ 169.318002] [\u003cffffffff8100b9d6\u003e] ? ftrace_call+0x5/0x2b\n[ 169.318002] [\u003cffffffff8100b9d1\u003e] ? ftrace_call+0x0/0x2b\n[ 169.318002] [\u003cffffffff8101ef10\u003e] ? ftrace_modify_code+0xa9/0x108\n[ 169.318002] [\u003cffffffff8106e27f\u003e] ? trace_hardirqs_off+0x25/0x27\n[ 169.318002] [\u003cffffffff8149afe7\u003e] ? _spin_unlock_irqrestore+0x1f/0x2d\n[ 169.318002] [\u003cffffffff81064f52\u003e] ? ring_buffer_reset_cpu+0xf6/0xfb\n[ 169.318002] [\u003cffffffff8106637c\u003e] ? ring_buffer_reset+0x36/0x48\n[ 169.318002] [\u003cffffffff8106aeda\u003e] update_max_tr_single+0xcc/0xf3\n[ 169.318002] [\u003cffffffff8100bc17\u003e] ? sysret_check+0x22/0x5d\n[ 169.318002] [\u003cffffffff8106e3ea\u003e] stop_critical_timing+0x142/0x204\n[ 169.318002] [\u003cffffffff8106e4cf\u003e] trace_hardirqs_on_caller+0x23/0x25\n[ 169.318002] [\u003cffffffff8149ac28\u003e] trace_hardirqs_on_thunk+0x3a/0x3c\n[ 169.318002] [\u003cffffffff8100bc17\u003e] ? sysret_check+0x22/0x5d\n[ 169.318002] ---[ end trace db76cbf775a750cf ]---\n\nBecause this tracer may try to swap two cpu ring buffers for an\nunregistered cpu on the ring buffer.\n\nThis patch might also fix a fair loss of traces due to unallocated buffers\nfor secondary cpus.\n\nReported-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nAcked-b: Steven Rostedt \u003crostedt@goodmis.org\u003e\nLKML-Reference: \u003c1237470453-5427-1-git-send-email-fweisbec@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "ac5f6c96859e9a664ac05b04bc96ed1caad5fe29", "tree": "0795e1695c645e3e8b5a4d6631f086373b241e1d", "parents": [ "e9d9df44736d116726f4596f7e2f9ce2764ffc0a" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 19 11:29:23 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 19 11:29:23 2009 -0400" }, "message": "function-graph: consolidate prologues for output\n\nImpact: clean up\n\nThe prologue of the function graph entry, return and comments all\nstart out pretty much the same. Each of these duplicate code and\ndo so slightly differently.\n\nThis patch consolidates the printing of the pid, absolute time,\ncpu and proc (and for entry, the interrupt).\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "ec625cb29e66824f7ce41082617aeb93fa4e42e2", "tree": "79bf2052899f9f5125b4054103b542a42b9e49bd", "parents": [ "09933a108e6730a464a1ab676c9decc11aee0edc" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 18 19:54:04 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 18 19:55:00 2009 +0100" }, "message": "tracepoints: dont update zero-sized tracepoint sections\n\nZero-sized tracepoint sections can occur if tracing is enabled but\nno tracepoint is defined. Do not emit a warning in that case.\n\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Jaswinder Singh Rajput \u003cjaswinderrajput@gmail.com\u003e\nLKML-Reference: \u003c1237394936.3132.1.camel@localhost.localdomain\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "09933a108e6730a464a1ab676c9decc11aee0edc", "tree": "1233d15bd2e1e0e4fbfa4144a878f553a3b04a35", "parents": [ "490362003457f8d387f6f6e73e3a7efbf56c3314" ], "author": { "name": "Jaswinder Singh Rajput", "email": "jaswinder@kernel.org", "time": "Wed Mar 18 22:18:56 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 18 18:54:39 2009 +0100" }, "message": "tracing: fix oops in tracepoint_update_probe_range()\n\nChange this crash:\n\n BUG: unable to handle kernel NULL pointer dereference at (null)\n IP: [\u003cffffffff8107d4de\u003e] tracepoint_update_probe_range+0x1f/0x9b\n PGD 13d5fb067 PUD 13d688067 PMD 0\n Oops: 0000 [#1] SMP\n\nTo a more debuggable WARN_ONCE().\n\nSigned-off-by: Jaswinder Singh Rajput \u003cjaswinderrajput@gmail.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nLKML-Reference: \u003c1237394936.3132.1.camel@localhost.localdomain\u003e\n[ moved the check outside the lock and added a WARN_ON(). ]\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "4acd4d00f716873e27e7b60ae292cbdbfae674dd", "tree": "6728bed8b0cf8cc47ead79261c0fc8d2e9e5c093", "parents": [ "490362003457f8d387f6f6e73e3a7efbf56c3314" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Mar 18 10:40:24 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Mar 18 10:52:47 2009 -0400" }, "message": "tracing: give easy way to clear trace buffer\n\nThere is currently no easy way to clear the trace buffer. Currently\nthe only way is to change the current tracer.\n\nThis patch lets the user clear the trace buffer by simply writing\ninto the trace files.\n\n echo \u003e /debug/tracing/trace\n\nor to clear a single cpu (i.e. for CPU 1):\n\n echo \u003e /debug/tracing/per_cpu/cpu1/trace\n\nRequested-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "f02b8624fedca39886b0eef770dca70c2f0749b3", "tree": "68583a9e84eacb3203e338c28f9236494ebb40ec", "parents": [ "03418c7efaa429dc7647ac93e3862e3fe1816873" ], "author": { "name": "Ananth N Mavinakayanahalli", "email": "ananth@in.ibm.com", "time": "Wed Mar 18 17:06:21 2009 +0530" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 18 12:51:16 2009 +0100" }, "message": "kprobes: Fix locking imbalance in kretprobes\n\nFix locking imbalance in kretprobes:\n\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n[ BUG: bad unlock balance detected! ]\n-------------------------------------\nkthreadd/2 is trying to release lock (\u0026rp-\u003elock) at:\n[\u003cc06b3080\u003e] pre_handler_kretprobe+0xea/0xf4\nbut there are no more locks to release!\n\nother info that might help us debug this:\n1 lock held by kthreadd/2:\n #0: (rcu_read_lock){..--}, at: [\u003cc06b2b24\u003e] __atomic_notifier_call_chain+0x0/0x5a\n\nstack backtrace:\nPid: 2, comm: kthreadd Not tainted 2.6.29-rc8 #1\nCall Trace:\n [\u003cc06ae498\u003e] ? printk+0xf/0x17\n [\u003cc06b3080\u003e] ? pre_handler_kretprobe+0xea/0xf4\n [\u003cc044ce6c\u003e] print_unlock_inbalance_bug+0xc3/0xce\n [\u003cc0444d4b\u003e] ? clocksource_read+0x7/0xa\n [\u003cc04450a4\u003e] ? getnstimeofday+0x5f/0xf6\n [\u003cc044a9ca\u003e] ? register_lock_class+0x17/0x293\n [\u003cc044b72c\u003e] ? mark_lock+0x1e/0x30b\n [\u003cc0448956\u003e] ? tick_dev_program_event+0x4a/0xbc\n [\u003cc0498100\u003e] ? __slab_alloc+0xa5/0x415\n [\u003cc06b2fbe\u003e] ? pre_handler_kretprobe+0x28/0xf4\n [\u003cc06b3080\u003e] ? pre_handler_kretprobe+0xea/0xf4\n [\u003cc044cf1b\u003e] lock_release_non_nested+0xa4/0x1a5\n [\u003cc06b3080\u003e] ? pre_handler_kretprobe+0xea/0xf4\n [\u003cc044d15d\u003e] lock_release+0x141/0x166\n [\u003cc06b07dd\u003e] _spin_unlock_irqrestore+0x19/0x50\n [\u003cc06b3080\u003e] pre_handler_kretprobe+0xea/0xf4\n [\u003cc06b20b5\u003e] kprobe_exceptions_notify+0x1c9/0x43e\n [\u003cc06b2b02\u003e] notifier_call_chain+0x26/0x48\n [\u003cc06b2b5b\u003e] __atomic_notifier_call_chain+0x37/0x5a\n [\u003cc06b2b24\u003e] ? __atomic_notifier_call_chain+0x0/0x5a\n [\u003cc06b2b8a\u003e] atomic_notifier_call_chain+0xc/0xe\n [\u003cc0442d0d\u003e] notify_die+0x2d/0x2f\n [\u003cc06b0f9c\u003e] do_int3+0x1f/0x71\n [\u003cc06b0e84\u003e] int3+0x2c/0x34\n [\u003cc042d476\u003e] ? do_fork+0x1/0x288\n [\u003cc040221b\u003e] ? kernel_thread+0x71/0x79\n [\u003cc043ed1b\u003e] ? kthread+0x0/0x60\n [\u003cc043ed1b\u003e] ? kthread+0x0/0x60\n [\u003cc04040b8\u003e] ? kernel_thread_helper+0x0/0x10\n [\u003cc043ec7f\u003e] kthreadd+0xac/0x148\n [\u003cc043ebd3\u003e] ? kthreadd+0x0/0x148\n [\u003cc04040bf\u003e] kernel_thread_helper+0x7/0x10\n\nSigned-off-by: Ananth N Mavinakayanahalli \u003cananth@in.ibm.com\u003e\nTested-by: Bharata B Rao \u003cbharata@linux.vnet.ibm.com\u003e\nCc: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Jim Keniston \u003cjkenisto@us.ibm.com\u003e\nCc: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: \u003cstable@kernel.org\u003e [2.6.29.x, 2.6.28.x, 2.6.27.x]\nLKML-Reference: \u003c20090318113621.GB4129@in.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "490362003457f8d387f6f6e73e3a7efbf56c3314", "tree": "b2976ec33eac69243d564661fcbc52d0fd573cdb", "parents": [ "327019b01e068d66dada6a8b2571180ab3674d20" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Tue Mar 17 22:38:58 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 18 10:12:38 2009 +0100" }, "message": "tracing/ftrace: stop {irqs, preempt}soff tracers when tracing is stopped\n\nImpact: fix a selftest warning\n\nIn some cases, it\u0027s possible to see the following warning on irqsoff\ntracer selftest:\n\n[ 4.640003] Testing tracer irqsoff: \u003c4\u003e------------[ cut here ]------------\n[ 4.653562] WARNING: at kernel/trace/trace.c:458 update_max_tr_single+0x9a/0xc4()\n[ 4.660000] Hardware name: System Product Name\n[ 4.660000] Modules linked in:\n[ 4.660000] Pid: 301, comm: kstop/1 Not tainted 2.6.29-rc8-tip #35837\n[ 4.660000] Call Trace:\n[ 4.660000] [\u003c4014b588\u003e] warn_slowpath+0x79/0x8f\n[ 4.660000] [\u003c402d6949\u003e] ? put_dec+0x64/0x6b\n[ 4.660000] [\u003c40162b56\u003e] ? getnstimeofday+0x58/0xdd\n[ 4.660000] [\u003c40162210\u003e] ? clocksource_read+0x3/0xf\n[ 4.660000] [\u003c4015eb44\u003e] ? ktime_set+0x8/0x34\n[ 4.660000] [\u003c4014101a\u003e] ? balance_runtime+0x8/0x56\n[ 4.660000] [\u003c405f6f11\u003e] ? _spin_lock+0x3/0x10\n[ 4.660000] [\u003c4011f643\u003e] ? ftrace_call+0x5/0x8\n[ 4.660000] [\u003c4015d0f1\u003e] ? task_cputime_zero+0x3/0x27\n[ 4.660000] [\u003c40190ee7\u003e] ? cpupri_set+0x90/0xcb\n[ 4.660000] [\u003c405f7208\u003e] ? _spin_lock_irqsave+0x22/0x34\n[ 4.660000] [\u003c40190f12\u003e] ? cpupri_set+0xbb/0xcb\n[ 4.660000] [\u003c405f7151\u003e] ? _spin_unlock_irqrestore+0x23/0x35\n[ 4.660000] [\u003c4018493f\u003e] ? ring_buffer_reset_cpu+0x27/0x51\n[ 4.660000] [\u003c405f7208\u003e] ? _spin_lock_irqsave+0x22/0x34\n[ 4.660000] [\u003c40184962\u003e] ? ring_buffer_reset_cpu+0x4a/0x51\n[ 4.660000] [\u003c405f7151\u003e] ? _spin_unlock_irqrestore+0x23/0x35\n[ 4.660000] [\u003c4018cc29\u003e] ? trace_hardirqs_off+0x1a/0x1c\n[ 4.660000] [\u003c405f7151\u003e] ? _spin_unlock_irqrestore+0x23/0x35\n[ 4.660000] [\u003c40184962\u003e] ? ring_buffer_reset_cpu+0x4a/0x51\n[ 4.660000] [\u003c401850f3\u003e] ? cpumask_next+0x15/0x18\n[ 4.660000] [\u003c4018a41f\u003e] update_max_tr_single+0x9a/0xc4\n[ 4.660000] [\u003c4014e5fe\u003e] ? exit_notify+0x16/0xf2\n[ 4.660000] [\u003c4018cd13\u003e] check_critical_timing+0xcc/0x11e\n[ 4.660000] [\u003c4014e5fe\u003e] ? exit_notify+0x16/0xf2\n[ 4.660000] [\u003c4014e5fe\u003e] ? exit_notify+0x16/0xf2\n[ 4.660000] [\u003c4018cdf1\u003e] stop_critical_timing+0x8c/0x9f\n[ 4.660000] [\u003c4014e5c4\u003e] ? forget_original_parent+0xac/0xd0\n[ 4.660000] [\u003c4018ce3a\u003e] trace_hardirqs_on+0x1a/0x1c\n[ 4.660000] [\u003c4014e5c4\u003e] forget_original_parent+0xac/0xd0\n[ 4.660000] [\u003c4014e5fe\u003e] exit_notify+0x16/0xf2\n[ 4.660000] [\u003c4014e8a5\u003e] do_exit+0x1cb/0x225\n[ 4.660000] [\u003c4015c72b\u003e] ? kthread+0x0/0x69\n[ 4.660000] [\u003c4011f61d\u003e] kernel_thread_helper+0xd/0x10\n[ 4.660000] ---[ end trace a7919e7f17c0a725 ]---\n[ 4.660164] .. no entries found ..FAILED!\n\nDuring the selftest of irqsoff tracer, we do that:\n\n\t/* disable interrupts for a bit */\n\tlocal_irq_disable();\n\tudelay(100);\n\tlocal_irq_enable();\n\t/* stop the tracing. */\n\ttracing_stop();\n\t/* check both trace buffers */\n\tret \u003d trace_test_buffer(tr, NULL);\n\nIf a callsite performs a new max delay with irqs off just after\ntracing_stop, update_max_tr_single() -\u003e ring_buffer_swap_cpu()\nwill be called with the buffers disabled by tracing_stop(), hence\nthe warning, then ring_buffer_swap_cpu() return -EAGAIN and\nupdate_max_tr_single() complains.\n\nFix it by also stopping the tracer before stopping the tracing globally.\nA similar situation can happen with preemptoff and preemptirqsoff tracers\nwhere we apply the same fix.\n\nReported-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nAcked-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nLKML-Reference: \u003c1237325938-5240-1-git-send-email-fweisbec@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "a635cf0497342978d417cae19d4a4823932977ff", "tree": "afacf84eb85388801a04996ed62e000cdfad3bc2", "parents": [ "50d88758a3f9787cbdbdbc030560b815721eab4b" ], "author": { "name": "Carsten Emde", "email": "Carsten.Emde@osadl.org", "time": "Wed Mar 18 09:00:41 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 18 10:10:18 2009 +0100" }, "message": "tracing: fix command line to pid reverse map\n\nImpact: fix command line to pid mapping\n\nmap_cmdline_to_pid[] is checked in trace_save_cmdline(), but never\nupdated. This results in stale pid to command line mappings and the\ntracer output will associate the wrong comm string.\n\nSigned-off-by: Carsten Emde \u003cCarsten.Emde@osadl.org\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Steven Rostedt \u003csrostedt@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003cnew-submission\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "50d88758a3f9787cbdbdbc030560b815721eab4b", "tree": "02e5c47c5c5bd05e578d1883ccaa1e3bc13c703a", "parents": [ "2c7eea4c62ba090b7f4583c3d7337ea0019be900" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Mar 18 08:58:44 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 18 10:10:17 2009 +0100" }, "message": "tracing: fix trace_find_cmdline()\n\nImpact: prevent stale command line output\n\nIn case there is no valid command line mapping for a pid\ntrace_find_cmdline() returns without updating the comm buffer. The\ntrace dump keeps the previous entry which results in confusing trace\noutput:\n\n \u003cidle\u003e-0 [000] 280.702056 ....\n \u003cidle\u003e-23456 [000] 280.702080 ....\n\nUpdate the comm buffer with \"\u003c...\u003e\" when no mapping is found.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Steven Rostedt \u003csrostedt@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003cnew-submission\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "2c7eea4c62ba090b7f4583c3d7337ea0019be900", "tree": "2a85739caeef13035316d47f61cab11f3a91660f", "parents": [ "18aecd362a1c991fbf5f7919ae051a77532ba2f8" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Mar 18 09:03:19 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 18 10:10:17 2009 +0100" }, "message": "tracing: replace the crude (unsigned) -1 hackery\n\nImpact: cleanup\n\nThe command line recorder uses (unsigned) -1 to mark non mapped\nentries in the pid to command line maps. The validity check is\ncompletely unintuitive: idx \u003e\u003d SAVED_CMDLINES\n\nThere is no need for such casting games. Use a constant to mark\nunmapped entries and check for that constant to make the code readable\nand understandable.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Steven Rostedt \u003csrostedt@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003cnew-submission\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "18aecd362a1c991fbf5f7919ae051a77532ba2f8", "tree": "f19f11afa2b669a6acea5c98fda091b68993bc59", "parents": [ "03418c7efaa429dc7647ac93e3862e3fe1816873" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Wed Mar 18 08:56:58 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 18 10:10:16 2009 +0100" }, "message": "tracing: stop command line recording when tracing is disabled\n\nImpact: prevent overwrite of command line entries\n\nWhen the tracer is stopped the command line recording continues to\nrecord. The check for tracing_is_on() is not sufficient here as the\nringbuffer status is not affected by setting\ndebug/tracing/tracing_enabled to 0. On a non idle system this can\nresult in the loss of the command line information for the stopped\ntrace, which makes the trace harder to read and analyse.\n\nCheck tracer_enabled to allow further recording.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Steven Rostedt \u003csrostedt@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003cnew-submission\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "327019b01e068d66dada6a8b2571180ab3674d20", "tree": "c81354a509d6962f6878145fcf3cdbe50a000a89", "parents": [ "03418c7efaa429dc7647ac93e3862e3fe1816873", "62524d55e5b9ffe36e3bf3dd7a594114f150b449" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 18 06:59:56 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 18 06:59:56 2009 +0100" }, "message": "Merge branch \u0027tip/tracing/ftrace\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into tracing/ftrace\n" }, { "commit": "62524d55e5b9ffe36e3bf3dd7a594114f150b449", "tree": "4e38825d35950ea962bbc44bdc78aea9ef909458", "parents": [ "5fec6ddcb43a91aa9a254c8ecf174c803de6f07e" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 17 20:58:00 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 17 23:12:11 2009 -0400" }, "message": "tracing: make power tracer start/stop methods lighter weight\n\nThe start/stop methods of a tracer should be able to be executed\nin all contexts. This patch converts the power tracer to do so.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "5fec6ddcb43a91aa9a254c8ecf174c803de6f07e", "tree": "6c8e3c0d719022e7c82d87894c9eb28492035aa5", "parents": [ "97e7e4f391cac2b00417b581b432533d245d4fd0" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 17 19:59:53 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 17 23:10:45 2009 -0400" }, "message": "tracing: make sched_switch stop/start light weight\n\nThe stopping and starting of a tracer should be light weight and\nbe able to be called in all contexts. The sched_switch grabbed\nmutexes in the start/stop functions. This patch changes it to a\nsimple variable, on/off.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "af4617bdba34aa556272b34c3986b0a4d588f568", "tree": "c46a6b695724ee27c0113f6affcebeffcefbcf23", "parents": [ "37886f6a9f62d22530ffee8d3f9215c8345b6969" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 17 18:09:55 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 17 23:10:35 2009 -0400" }, "message": "tracing: add global-clock option to provide cross CPU clock to traces\n\nImpact: feature to allow better serialized clock\n\nThis patch adds an option called \"global-clock\" that will allow\nthe tracer to switch to a slower but more accurate (across CPUs)\nclock.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "37886f6a9f62d22530ffee8d3f9215c8345b6969", "tree": "046c9086682145fd2808af7197af669f08be6d0a", "parents": [ "6adaad14d7d4d3ef31b4e2dc992b18b5da7c4eb3" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 17 17:22:06 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 17 23:06:31 2009 -0400" }, "message": "ring-buffer: add api to allow a tracer to change clock source\n\nThis patch adds a new function called ring_buffer_set_clock that\nallows a tracer to assign its own clock source to the buffer.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "6e2b75740bed35df98b8113300579e13ed2ce848", "tree": "225f75f803450c728d546c755f7398b102f8cf3d", "parents": [ "ee568b25ee9e160b32d1aef73d8b2ee9c05d34db" ], "author": { "name": "Masami Hiramatsu", "email": "mhiramat@redhat.com", "time": "Mon Mar 16 18:13:36 2009 -0400" }, "committer": { "name": "Rusty Russell", "email": "rusty@rustcorp.com.au", "time": "Wed Mar 18 09:31:21 2009 +1030" }, "message": "module: fix refptr allocation and release order\n\nImpact: fix ref-after-free crash on failed module load\n\nFix refptr bug: Change refptr allocation and release order not to access a module\ndata structure pointed by \u0027mod\u0027 after freeing mod-\u003emodule_core.\nThis bug will cause kernel panic(e.g. failed to find undefined symbols).\n\nThis bug was reported on systemtap bugzilla.\nhttp://sources.redhat.com/bugzilla/show_bug.cgi?id\u003d9927\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nCc: Eric Dumazet \u003cdada1@cosmosbay.com\u003e\nSigned-off-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\n" }, { "commit": "4176935b58eeb636917e65a2c388e4607e36cce6", "tree": "dac4e0005cda5a3a5a313dde35bbac2877d9bd93", "parents": [ "c269fc8c537d761f36cb98e637ae934d9331a9d5", "6adaad14d7d4d3ef31b4e2dc992b18b5da7c4eb3" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 17 10:37:37 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 17 10:37:37 2009 +0100" }, "message": "Merge branch \u0027tip/tracing/ftrace\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into tracing/ftrace\n" }, { "commit": "c269fc8c537d761f36cb98e637ae934d9331a9d5", "tree": "f354c1ea46d796d553e239cf6365dd92c2200182", "parents": [ "e4106133341121aeaad732d4613de06d9033b5ac" ], "author": { "name": "Tom Zanussi", "email": "tzanussi@gmail.com", "time": "Tue Mar 17 01:20:59 2009 -0500" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 17 08:38:23 2009 +0100" }, "message": "tracing: fix leak in event_format_read()\n\nImpact: fix memory leak\n\nIf event_format_read() exits early due to nonzero ppos, the\nprevious kmalloc doesn\u0027t get freed - might as well do the\ncheck before the kmalloc and avoid the problem.\n\nSigned-off-by: Tom Zanussi \u003ctzanussi@gmail.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: \u003d?ISO-8859-1?Q?Fr\u003dE9d\u003dE9ric?\u003d Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c1237270859.8033.141.camel@charm-linux\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "6adaad14d7d4d3ef31b4e2dc992b18b5da7c4eb3", "tree": "2c1a122a9a13c8b2cae8f0c27368a67e33804deb", "parents": [ "4ca530852346be239b7c19e7bec5d2b78855bebe" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon Mar 16 21:57:17 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon Mar 16 23:31:15 2009 -0400" }, "message": "tracing: stop comm recording on tracing off\n\nImpact: fix for losing comms in trace\n\nThe command lines of tasks are cached at sched switch to not need\nto record them at every trace point. Disabling the tracing on stops\nthe recording of traces, but does not stop the caching of command lines.\nWhen the tracing is off the cache may overflow and cause the tracing\nto show incorrect tasks matching the PIDs.\n\nThis patch disables prevents updates to the comm cache when the ring buffer\nis off.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "4ca530852346be239b7c19e7bec5d2b78855bebe", "tree": "96e5252faaf362115a96ed6df7c4e4f698a027dc", "parents": [ "03303549b1695dc024d4a653cc16bd79f78f9750" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon Mar 16 19:20:15 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon Mar 16 23:27:06 2009 -0400" }, "message": "tracing: protect reader of cmdline output\n\nImpact: fix to one cause of incorrect comm outputs in trace\n\nThe spinlock only protected the creation of a comm \u003c\u003d\u003e pid pair.\nBut it was possible that a reader could look up a pid, and get the\nwrong comm because it had no locking.\n\nThis also required changing trace_find_cmdline to copy the comm cache\nand not just send back a pointer to it.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "03303549b1695dc024d4a653cc16bd79f78f9750", "tree": "aa731b33460908038a50fb72850b873638a768aa", "parents": [ "b478b782e110fdb4135caa3062b6d687e989d994" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Mon Mar 16 22:41:00 2009 +0100" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon Mar 16 22:15:36 2009 -0400" }, "message": "tracing/ftrace: fix the check on nopped sites\n\nImpact: fix a dynamic tracing failure\n\nRecently, the function and function graph tracers failed to use dynamic\ntracing after the following commit:\n\nfa9d13cf135efbd454453a53b6299976bea245a9\n(ftrace: don\u0027t try to __ftrace_replace_code on !FTRACE_FL_CONVERTED rec)\n\nThe patch is right except a mistake on the check for the FTRACE_FL_CONVERTED\nflag. The code patching is aborted in case of successfully nopped sites.\nWhat we want is the opposite: ignore the callsites that haven\u0027t been nopped.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "2fc1dfbe17e7705c55b7a99da995fa565e26f151", "tree": "8d7ecb57fdefdfac5bdff6ee3a82485e2ea4340a", "parents": [ "ac1d52d0b85854958c7e78c8006e39aadb6ce4b8" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Mon Mar 16 01:45:03 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Mar 16 09:13:18 2009 +0100" }, "message": "tracing/core: fix early free of cpumasks\n\nImpact: fix crashes when tracing cpumasks\n\nWhile ring-buffer allocation, the cpumasks are allocated too,\nincluding the tracing cpumask and the per-cpu file mask handler.\nBut these cpumasks are freed accidentally just after.\nFix it.\n\nReported-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c1237164303-11476-1-git-send-email-fweisbec@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "ac1d52d0b85854958c7e78c8006e39aadb6ce4b8", "tree": "fc50818980e376a66d44f991b94e8a52c03e68fc", "parents": [ "59f586db98919d7d9c43527b26c8de1cdf9ed912" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Mon Mar 16 00:32:41 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Mar 16 09:13:18 2009 +0100" }, "message": "tracing/ftrace: fix double calls to tracing_start()\n\nImpact: fix a warning during preemptirqsoff selftests\n\nWhen the preemptirqsoff selftest fails, we see the following\nwarning:\n\n[ 6.050000] Testing tracer preemptirqsoff: .. no entries found ..\n------------[ cut here ]------------\n[ 6.060000] WARNING: at kernel/trace/trace.c:688 tracing_start+0x67/0xd3()\n[ 6.060000] Modules linked in:\n[ 6.060000] Pid: 1, comm: swapper Tainted: G\n[ 6.060000] Call Trace:\n[ 6.060000] [\u003cffffffff802460ff\u003e] warn_slowpath+0xb1/0x100\n[ 6.060000] [\u003cffffffff802a8f5b\u003e] ? trace_preempt_on+0x35/0x4b\n[ 6.060000] [\u003cffffffff802a37fb\u003e] ? tracing_start+0x31/0xd3\n[ 6.060000] [\u003cffffffff802a37fb\u003e] ? tracing_start+0x31/0xd3\n[ 6.060000] [\u003cffffffff80271e0b\u003e] ? __lock_acquired+0xe6/0x1f2\n[ 6.060000] [\u003cffffffff802a37fb\u003e] ? tracing_start+0x31/0xd3\n[ 6.060000] [\u003cffffffff802a3831\u003e] tracing_start+0x67/0xd3\n[ 6.060000] [\u003cffffffff802a8ace\u003e] ? irqsoff_tracer_reset+0x2d/0x57\n[ 6.060000] [\u003cffffffff802a4d1c\u003e] trace_selftest_startup_preemptirqsoff+0x1c8/0x1f1\n[ 6.060000] [\u003cffffffff802a4798\u003e] register_tracer+0x12f/0x241\n[ 6.060000] [\u003cffffffff810250d0\u003e] ? init_irqsoff_tracer+0x0/0x53\n[ 6.060000] [\u003cffffffff8102510b\u003e] init_irqsoff_tracer+0x3b/0x53\n\nThis is because in fail case, the preemptirqsoff tracer selftest calls twice\nthe tracing_start() function:\n\nint\ntrace_selftest_startup_preemptirqsoff(struct tracer *trace, struct trace_array *tr)\n{\n if (!ret \u0026\u0026 !count) {\n printk(KERN_CONT \".. no entries found ..\");\n ret \u003d -1;\n tracing_start(); \u003c-----\n goto out;\n }\n [...]\nout:\n trace-\u003ereset(tr);\n tracing_start(); \u003c------\n tracing_max_latency \u003d save_max;\n\n return ret;\n}\n\nSince it is well handled in the out path, we don\u0027t need the conditional one.\n\nReported-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c1237159961-7447-1-git-send-email-fweisbec@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "59f586db98919d7d9c43527b26c8de1cdf9ed912", "tree": "d77ae20815666a1c94dc177af974f88b8102fd38", "parents": [ "0ea1c4156bf9e2eb370cc5c6fa6eb112bd844dec" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Sun Mar 15 22:10:39 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Mar 16 09:13:17 2009 +0100" }, "message": "tracing/core: fix missing mutex unlock on tracing_set_tracer()\n\nImpact: fix possible locking imbalance\n\nIn case of ring buffer resize failure, tracing_set_tracer forgot to\nrelease trace_types_lock. Fix it.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c1237151439-6755-5-git-send-email-fweisbec@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "0ea1c4156bf9e2eb370cc5c6fa6eb112bd844dec", "tree": "f07c37d42ca285f7cc88307c6b3586bc11e80090", "parents": [ "5be71b61f17b0e3bc8ad0b1a1b7b53ab7d574ebb" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Sun Mar 15 22:10:38 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Mar 16 09:13:17 2009 +0100" }, "message": "tracing/syscalls: select kallsysms\n\nSyscall tracing must select kallsysms.\n\nThe arch code builds a table to find the syscall metadata by syscall\nnumber. It needs the syscalls names resolution from the symbol table\nto know which name found on the syscalls metadatas match a function\npointer from the arch sys_call_table.\n\nReported-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nReported-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c1237151439-6755-4-git-send-email-fweisbec@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "5be71b61f17b0e3bc8ad0b1a1b7b53ab7d574ebb", "tree": "7ab4c915871b464a08de974570900381b169e034", "parents": [ "6404434525bb9f8f2239998f30fd7c93f2efa5b3" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Sun Mar 15 22:10:37 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Mar 16 09:13:16 2009 +0100" }, "message": "tracing/syscalls: protect thread flag toggling from races\n\nImpact: fix syscall tracer enable/disable race\n\nThe current thread flag toggling is racy as shown in the following\nscenario:\n\n- task A is the last user of syscall tracing, it releases the\n TIF_SYSCALL_FTRACE on each tasks\n\n- at the same time task B start syscall tracing. refcount \u003d\u003d 0 so\n it sets up TIF_SYSCALL_FTRACE on each tasks.\n\nThe effect of the mixup is unpredictable.\nSo this fix adds a mutex on {start,stop}_syscall_tracing().\n\nReported-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nReported-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nLKML-Reference: \u003c1237151439-6755-3-git-send-email-fweisbec@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "6404434525bb9f8f2239998f30fd7c93f2efa5b3", "tree": "9c761f4d724f73a4ca9792accb576289432e4fbb", "parents": [ "ac99c58c9e56967037382e31f865b72b10127965" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Sun Mar 15 22:10:36 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Mar 16 09:13:16 2009 +0100" }, "message": "tracing/syscalls: various cleanups\n\nImpact: cleanup\n\n- Drop unused cpu variable\n- Fix some errors on comments\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c1237151439-6755-2-git-send-email-fweisbec@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "ac99c58c9e56967037382e31f865b72b10127965", "tree": "703c5f043cb8067cca699b6c3b6a481430912dd5", "parents": [ "7243f2145a9b06e5cf9a49fc9b8b9a4fff6fb42e" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Sun Mar 15 22:10:35 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Mar 16 09:13:15 2009 +0100" }, "message": "tracing/syscalls: fix missing release of tracing\n\nImpact: fix \u0027stuck\u0027 syscall tracer\n\nThe syscall tracer uses a refcounter to enable several users\nsimultaneously.\n\nBut the refcounter did not behave correctly and always restored\nits value to 0 after calling start_syscall_tracing(). Therefore,\nstop_syscall_tracing() couldn\u0027t release correctly the tasks from\ntracing.\n\nAlso the tracer forgot to reset the buffer when it is released.\n\nDrop the pointless refcount decrement on start_syscall_tracing()\nand reset the buffer when we release the tracer.\n\nThis fixes two reported issue:\n\n- when we switch from syscall tracer to another tracer, syscall\n tracing continued.\n\n- incorrect use of the refcount.\n\nReported-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nReported-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c1237151439-6755-1-git-send-email-fweisbec@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "7243f2145a9b06e5cf9a49fc9b8b9a4fff6fb42e", "tree": "50b73e168e0e8b711d5e1ca8878389464d6c905c", "parents": [ "b478b782e110fdb4135caa3062b6d687e989d994", "62395efdb0ef42e664ca81677901268c403a6286", "5bee17f18b595937e6beafeee5197868a3f74a06" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Mar 16 09:12:42 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Mar 16 09:12:42 2009 +0100" }, "message": "Merge branches \u0027tracing/ftrace\u0027, \u0027tracing/syscalls\u0027 and \u0027linus\u0027 into tracing/core\n\nConflicts:\n\tarch/parisc/kernel/irq.c\n" }, { "commit": "bed1ffca022cc876fb83161d26670e9b5d3cf36b", "tree": "a896c79e9ea1af11f992826f1de7e2ece52fbe33", "parents": [ "f58ba100678f421bdcb000a3c71793f432dfab93" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Fri Mar 13 15:42:11 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 16:57:42 2009 +0100" }, "message": "tracing/syscalls: core infrastructure for syscalls tracing, enhancements\n\nImpact: new feature\n\nThis adds the generic support for syscalls tracing. This is\ncurrently exploited through a devoted tracer but other tracing\nengines can use it. (They just have to play with\n{start,stop}_ftrace_syscalls() and use the display callbacks\nunless they want to override them.)\n\nThe syscalls prototypes definitions are abused here to steal\nsome metadata informations:\n\n- syscall name, param types, param names, number of params\n\nThe syscall addr is not directly saved during this definition\nbecause we don\u0027t know if its prototype is available in the\nnamespace. But we don\u0027t really need it. The arch has just to\nbuild a function able to resolve the syscall number to its\nmetadata struct.\n\nThe current tracer prints the syscall names, parameters names\nand values (and their types optionally). Currently the value is\na raw hex but higher level values diplaying is on my TODO list.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c1236955332-10133-2-git-send-email-fweisbec@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "e94142a67f8bad494c593f0a07c9fc2fbec98c0e", "tree": "75419622606aa186da5592302c91cb93471bec26", "parents": [ "850a80cfaa5aec3e626eb3736eff890a80e4fa77" ], "author": { "name": "Lai Jiangshan", "email": "laijs@cn.fujitsu.com", "time": "Fri Mar 13 17:51:27 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 11:36:20 2009 +0100" }, "message": "ftrace: remove struct list_head from struct dyn_ftrace\n\nImpact: save memory\n\nThe struct dyn_ftrace table is very large, this patch will save\nabout 50%.\n\nSigned-off-by: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003csrostedt@redhat.com\u003e\nLKML-Reference: \u003c49BA2C9F.8020009@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "850a80cfaa5aec3e626eb3736eff890a80e4fa77", "tree": "777195c11a34eee8a63a5d2ccc3cf0ccd2855491", "parents": [ "fa9d13cf135efbd454453a53b6299976bea245a9" ], "author": { "name": "Lai Jiangshan", "email": "laijs@cn.fujitsu.com", "time": "Fri Mar 13 17:47:23 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 11:35:31 2009 +0100" }, "message": "ftrace: use seq_read\n\nImpact: cleanup\n\nVFS layer has tested the file mode, we do not need test it.\n\nSigned-off-by: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003csrostedt@redhat.com\u003e\nLKML-Reference: \u003c49BA2BAB.6010608@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "fa9d13cf135efbd454453a53b6299976bea245a9", "tree": "240d46a90984f3c84f336535269e97559e891104", "parents": [ "b00f0b6dc1773b4c8f538503247da050b5ea631b" ], "author": { "name": "Zhaolei", "email": "zhaolei@cn.fujitsu.com", "time": "Fri Mar 13 17:16:34 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 10:25:06 2009 +0100" }, "message": "ftrace: don\u0027t try to __ftrace_replace_code on !FTRACE_FL_CONVERTED rec\n\nDo __ftrace_replace_code for !FTRACE_FL_CONVERTED rec will always\nfail, we should ignore this rec.\n\nSigned-off-by: Zhao Lei \u003czhaolei@cn.fujitsu.com\u003e\nCc: \"Steven Rostedt ;\" \u003crostedt@goodmis.org\u003e\nLKML-Reference: \u003c49BA2472.4060206@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "b00f0b6dc1773b4c8f538503247da050b5ea631b", "tree": "94c81517cb3d1def0c0f9ccb33c48fb03c0f1c75", "parents": [ "62a394eb77a1ddea73273f53ed8c3ccf6e04f2fb" ], "author": { "name": "Zhaolei", "email": "zhaolei@cn.fujitsu.com", "time": "Fri Mar 13 17:14:01 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 10:25:06 2009 +0100" }, "message": "ftrace: avoid double-free of dyn_ftrace\n\nIf dyn_ftrace is freed before ftrace_release(), ftrace_release()\nwill free it again and make ftrace_free_records wrong.\n\nSigned-off-by: Zhao Lei \u003czhaolei@cn.fujitsu.com\u003e\nCc: \"Steven Rostedt ;\" \u003crostedt@goodmis.org\u003e\nLKML-Reference: \u003c49BA23D9.1050900@cn.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "62a394eb77a1ddea73273f53ed8c3ccf6e04f2fb", "tree": "ee72d87524b29eb9457b45e02a4587d8fbd9191d", "parents": [ "d2e82546ae98eee353fae57e389f487586fe380d", "1b3fa2ce64363c289b3b14723cca7290bf91cfce" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 10:23:39 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 10:23:39 2009 +0100" }, "message": "Merge branches \u0027tracing/ftrace\u0027 and \u0027tracing/syscalls\u0027; commit \u0027v2.6.29-rc8\u0027 into tracing/core\n" }, { "commit": "ee08c6eccb7d1295516f7cf420fddf7b14e9146f", "tree": "ec6d209e47bb1a8910d16c1c8b4ea65959850689", "parents": [ "4c6ed8f496fe89ff81b3d6e617a531bedfb613e4" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Sat Mar 07 05:52:59 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 06:25:43 2009 +0100" }, "message": "tracing/ftrace: syscall tracing infrastructure, basics\n\nProvide basic callbacks to do syscall tracing.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nAcked-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nLKML-Reference: \u003c1236401580-5758-2-git-send-email-fweisbec@gmail.com\u003e\n[ simplified it to a trace_printk() for now. ]\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "899039e8746bb9a09b6487ddb8ab2275ce9d0256", "tree": "4bc6365d81796fb675c4fe0fde243e11fd9cb361", "parents": [ "7f96f93f02b7637491a1637dee12dcdcd40b9802" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Mar 13 00:43:33 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Mar 13 00:43:33 2009 -0400" }, "message": "softirq: no need to have SOFTIRQ in softirq name\n\nImpact: clean up\n\nIt is redundant to have \u0027SOFTIRQ\u0027 in the softirq names.\n\nReported-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "7f96f93f02b7637491a1637dee12dcdcd40b9802", "tree": "4756faebe7ada4eabb4ca985b3b26e09ecbfec14", "parents": [ "bdc067582b8b71c7771bab076bbc51569c594fb4" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Mar 13 00:37:42 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Mar 13 00:37:42 2009 -0400" }, "message": "tracing: move binary buffers into per cpu directory\n\nThe binary_buffers directory in /debugfs/tracing held the files\nto read the trace buffers in a binary format. This held one file\nper CPU buffer. But we also have a per_cpu directory that holds\na way to read the pretty-print formats.\n\nThis patch moves the binary buffers into the per_cpu_directory:\n\n # ls /debug/tracing/per_cpu/cpu1/\ntrace trace_pipe trace_pipe_raw\n\nThe new name is called \"trace_pipe_raw\". The binary buffers always\nacted similar to trace_pipe, except that they produce raw data.\n\nRequested-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "bdc067582b8b71c7771bab076bbc51569c594fb4", "tree": "a202353e4e365ae29c5bf95ca33eacd8eb4dfb54", "parents": [ "eb1871f34358024acfa3523ef375ef14b7527173" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Mar 13 00:12:52 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Mar 13 00:15:46 2009 -0400" }, "message": "tracing: add comment for use of double __builtin_consant_p\n\nImpact: documentation\n\nThe use of the double __builtin_contant_p checks in the event_trace_printk\ncan be confusing to developers and reviewers. This patch adds a comment\nto explain why it is there.\n\nRequested-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nLKML-Reference: \u003c20090313122235.43EB.A69D9226@jp.fujitsu.com\u003e\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "eb1871f34358024acfa3523ef375ef14b7527173", "tree": "b09887f47e77f5935ef54ff41c2707cd67bb9a7f", "parents": [ "5cc985488845ec7227a2c5cfd2fd62cf57fb411a" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Mar 13 00:00:58 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Fri Mar 13 00:00:58 2009 -0400" }, "message": "tracing: left align location header in stack_trace\n\nIngo Molnar suggested, instead of:\n\n Depth Size Location (27 entries)\n ----- ---- --------\n 0) 2880 48 lock_timer_base+0x2b/0x4f\n 1) 2832 80 __mod_timer+0x33/0xe0\n 2) 2752 16 __ide_set_handler+0x63/0x65\n\nTo have it be:\n\n Depth Size Location (27 entries)\n ----- ---- --------\n 0) 2880 48 lock_timer_base+0x2b/0x4f\n 1) 2832 80 __mod_timer+0x33/0xe0\n 2) 2752 16 __ide_set_handler+0x63/0x65\n\nRequested-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "5cc985488845ec7227a2c5cfd2fd62cf57fb411a", "tree": "818517eb07b585e981ce81c200294a8ec7a8e992", "parents": [ "f28e55765e40450c127e44d00ae65d0cd1a4efec" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 22:24:17 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 22:24:17 2009 -0400" }, "message": "ring-buffer: document reader page design\n\nIn a private email conversation I explained how the ring buffer\npage worked by using silly ASCII art. Ingo suggested that I add\nthat to the comments of the code.\n\nHere it is.\n\nRequested-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "f28e55765e40450c127e44d00ae65d0cd1a4efec", "tree": "31b8b0483fc8a5ddc0fc80ae8fee88e01f6f56d5", "parents": [ "889a6c367283709a80dad9413488472596a1a1d2" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 22:00:19 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 22:00:19 2009 -0400" }, "message": "tracing: show event name in trace for TRACE_EVENT created events\n\nUnlike TRACE_FORMAT() macros, the TRACE_EVENT() macros do not show\nthe event name in the trace file. Knowing the event type in the trace\noutput is very useful.\n\nInstead of:\n\n task swapper:0 [140] \u003d\u003d\u003e ntpd:3308 [120]\n\nWe now have:\n\n sched_switch: task swapper:0 [140] \u003d\u003d\u003e ntpd:3308 [120]\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "889a6c367283709a80dad9413488472596a1a1d2", "tree": "fabe1614e30f9d6e306376159a05e91721b6cb60", "parents": [ "39842323ceb368d2ea36ab7696aedbe296e13b61" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Fri Mar 13 09:03:04 2009 +0900" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 21:23:47 2009 -0400" }, "message": "tracing: Don\u0027t use tracing_record_cmdline() in workqueue tracer fix\n\ncommit c3ffc7a40b7e94b094efe1c8ab4e24370a782b65\n\"Don\u0027t use tracing_record_cmdline() in workqueue tracer\"\nhas a race window.\n\nfind_task_by_vpid() requires task_list_lock().\n\nLKML-Reference: \u003c20090313090042.43CD.A69D9226@jp.fujitsu.com\u003e\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "39842323ceb368d2ea36ab7696aedbe296e13b61", "tree": "6050a0e282eaaf500f3809b1e53256b24b570d92", "parents": [ "5d592b44b29a1d73e13d5c9e3426eed843bdc359" ], "author": { "name": "Jason Baron", "email": "jbaron@redhat.com", "time": "Thu Mar 12 14:36:03 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 21:20:58 2009 -0400" }, "message": "tracing: tracepoints for softirq entry/exit - tracepoints\n\nIntroduce softirq entry/exit tracepoints. These are useful for\naugmenting existing tracers, and to figure out softirq frequencies and\ntimings.\n\n[\n s/irq_softirq_/softirq_/ for trace point names and\n Fixed printf format in TRACE_FORMAT macro\n - Steven Rostedt\n]\n\nLKML-Reference: \u003c20090312183603.GC3352@redhat.com\u003e\nSigned-off-by: Jason Baron \u003cjbaron@redhat.com\u003e\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "5d592b44b29a1d73e13d5c9e3426eed843bdc359", "tree": "e26ec625e6fb5efdbbf41d0bba940a2dbac19f50", "parents": [ "e447e1df2e568cd43d1918963c9f09fae85aea57" ], "author": { "name": "Jason Baron", "email": "jbaron@redhat.com", "time": "Thu Mar 12 14:33:36 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 21:15:02 2009 -0400" }, "message": "tracing: tracepoints for softirq entry/exit - add softirq-to-name array\n\nCreate a \u0027softirq_to_name\u0027 array, which is indexed by softirq #, so\nthat we can easily convert between the softirq index # and its name, in\norder to get more meaningful output messages.\n\nLKML-Reference: \u003c20090312183336.GB3352@redhat.com\u003e\nSigned-off-by: Jason Baron \u003cjbaron@redhat.com\u003e\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "e447e1df2e568cd43d1918963c9f09fae85aea57", "tree": "a73edfcc1b603a921ed7e332ce614e1345385100", "parents": [ "2da03ecee6308ea174e8a02b92a3c4ec92e886c8" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 19:42:29 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 21:15:01 2009 -0400" }, "message": "tracing: explain why stack tracer is empty\n\nIf the stack tracing is disabled (by default) the stack_trace file\nwill only contain the header:\n\n # cat /debug/tracing/stack_trace\n Depth Size Location (0 entries)\n ----- ---- --------\n\nThis can be frustrating to a developer that does not realize that the\nstack tracer is disabled. This patch adds the following text:\n\n # cat /debug/tracing/stack_trace\n Depth Size Location (0 entries)\n ----- ---- --------\n #\n # Stack tracer disabled\n #\n # To enable the stack tracer, either add \u0027stacktrace\u0027 to the\n # kernel command line\n # or \u0027echo 1 \u003e /proc/sys/kernel/stack_tracer_enabled\u0027\n #\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "2da03ecee6308ea174e8a02b92a3c4ec92e886c8", "tree": "6e532a732a63f3a8385564aa450ada83d1a25ce7", "parents": [ "7975a2be16dd42df2cab80c80cb6ece382edb6ec" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 18:57:51 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 21:15:01 2009 -0400" }, "message": "tracing: fix stack tracer header\n\nThe stack tracer use to look like this:\n\n # cat /debug/tracing/stack_trace\n Depth Size Location (57 entries)\n ----- ---- --------\n 0) 5088 16 mempool_alloc_slab+0x16/0x18\n 1) 5072 144 mempool_alloc+0x4d/0xfe\n 2) 4928 16 scsi_sg_alloc+0x48/0x4a [scsi_mod]\n\nNow it looks like this:\n\n # cat /debug/tracing/stack_trace\n\n Depth Size Location (57 entries)\n ----- ---- --------\n 0) 5088 16 mempool_alloc_slab+0x16/0x18\n 1) 5072 144 mempool_alloc+0x4d/0xfe\n 2) 4928 16 scsi_sg_alloc+0x48/0x4a [scsi_mod]\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "7975a2be16dd42df2cab80c80cb6ece382edb6ec", "tree": "b9fdae6b0f3cd7c902beb8bf995efe2d827e02a2", "parents": [ "e9fb2b6d5845e24f104713591286b6f39761c027" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 14:23:17 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 21:15:01 2009 -0400" }, "message": "tracing: export trace formats to user space\n\nThe binary printk saves a pointer to the format string in the ring buffer.\nOn output, the format is processed. But if the user is reading the\nring buffer through a binary interface, the pointer is meaningless.\n\nThis patch creates a file called printk_formats that maps the pointers\nto the formats.\n\n # cat /debug/tracing/printk_formats\n0xffffffff80713d40 : \"irq_handler_entry: irq\u003d%d handler\u003d%s\\n\"\n0xffffffff80713d48 : \"lock_acquire: %s%s%s\\n\"\n0xffffffff80713d50 : \"lock_release: %s\\n\"\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "e9fb2b6d5845e24f104713591286b6f39761c027", "tree": "13239f3046b28b9b8b6166e438a4c509e57972c9", "parents": [ "828275574e0161bdddb5817d4bd76a0265ef0470" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 14:19:25 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 21:15:00 2009 -0400" }, "message": "tracing: have event_trace_printk use static tracer\n\nImpact: speed up on event tracing\n\nThe event_trace_printk is currently a wrapper function that calls\ntrace_vprintk. Because it uses a variable for the fmt it misses out\non the optimization of using the binary printk.\n\nThis patch makes event_trace_printk into a macro wrapper to use the\nfmt as the same as the trace_printks.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "828275574e0161bdddb5817d4bd76a0265ef0470", "tree": "191887ba1a47e161cf846fd8e078a0037f8a23f5", "parents": [ "48ead02030f849d011259244bb4ea9b985479006" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 14:14:31 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 21:15:00 2009 -0400" }, "message": "tracing: make bprint event use the proper event id\n\nThe bprint record is using TRACE_PRINT when it should be TRACE_BPRINT.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "48ead02030f849d011259244bb4ea9b985479006", "tree": "4500f27dc7eb6567ca79dd03fa94fe9e56fbc316", "parents": [ "db526ca329f855510e8ce672332eba3304aed590" ], "author": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Thu Mar 12 18:24:49 2009 +0100" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 21:15:00 2009 -0400" }, "message": "tracing/core: bring back raw trace_printk for dynamic formats strings\n\nImpact: fix callsites with dynamic format strings\n\nSince its new binary implementation, trace_printk() internally uses static\ncontainers for the format strings on each callsites. But the value is\nassigned once at build time, which means that it can\u0027t take dynamic\nformats.\n\nSo this patch unearthes the raw trace_printk implementation for the callers\nthat will need trace_printk to be able to carry these dynamic format\nstrings. The trace_printk() macro will use the appropriate implementation\nfor each callsite. Most of the time however, the binary implementation will\nstill be used.\n\nThe other impact of this patch is that mmiotrace_printk() will use the old\nimplementation because it calls the low level trace_vprintk and we can\u0027t\nguess here whether the format passed in it is dynamic or not.\n\nSome parts of this patch have been written by Steven Rostedt (most notably\nthe part that chooses the appropriate implementation for each callsites).\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "db526ca329f855510e8ce672332eba3304aed590", "tree": "d6bdd3384a063d7c58ae807a310ecc80cb91773b", "parents": [ "8aabee573dff131a085c63de7667eacd94ba4ccb" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 13:53:25 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 21:14:59 2009 -0400" }, "message": "tracing: show that buffer size is not expanded\n\nImpact: do not confuse user on small trace buffer sizes\n\nWhen the system boots up, the trace buffer is small to conserve memory.\nIt is only two pages per online CPU. When the tracer is used, it expands\nto the default value.\n\nThis can confuse the user if they look at the buffer size and see only\n7, but then later they see 1408.\n\n # cat /debug/tracing/buffer_size_kb\n7\n\n # echo sched_switch \u003e /debug/tracing/current_tracer\n\n # cat /debug/tracing/buffer_size_kb\n1408\n\nThis patch tries to help remove this confustion by showing that the\nbuffer has not been expanded.\n\n # cat /debug/tracing/buffer_size_kb\n7 (expanded: 1408)\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "8aabee573dff131a085c63de7667eacd94ba4ccb", "tree": "923c02126de3e55148df132a89a7d2151df855b7", "parents": [ "59222efe2d184956464abe5b637bc842ff053b93" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 13:13:49 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 21:14:59 2009 -0400" }, "message": "ring-buffer: remove unneeded get_online_cpus\n\nImpact: speed up and remove possible races\n\nThe get_online_cpus was added to the ring buffer because the original\ndesign would free the ring buffer on a CPU that was being taken\noff line. The final design kept the ring buffer around even when the\nCPU was taken off line. This is to allow a user to still read the\ninformation on that ring buffer.\n\nMost of the get_online_cpus are no longer needed since the ring buffer will\nnot disappear from the use cases.\n\nReported-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "59222efe2d184956464abe5b637bc842ff053b93", "tree": "210300f7e0442ca342c3b8ecf6ee76207b7e3b2f", "parents": [ "1027fcb206a0fb8348e63aff078c74bdee1c2698" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 11:46:03 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 21:14:59 2009 -0400" }, "message": "ring-buffer: use CONFIG_HOTPLUG_CPU not CONFIG_HOTPLUG\n\nThe hotplug code in the ring buffers is for use with CPU hotplug,\nnot generic hotplug.\n\nReported-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "1027fcb206a0fb8348e63aff078c74bdee1c2698", "tree": "05e858e410fdb30865a11c78e2bb9bb0a12f55ba", "parents": [ "a123c52b46a1f84bcec3dc963351896c6d6afaf7" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 11:33:20 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 21:14:58 2009 -0400" }, "message": "tracing: protect ring_buffer_expanded with trace_types_lock\n\nImpact: prevent races with ring_buffer_expanded\n\nThis patch places the expanding of the tracing buffer under the\nprotection of the trace_types_lock mutex. It is highly unlikely\nthat there would be any contention, but better safe than sorry.\n\nReported-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "a123c52b46a1f84bcec3dc963351896c6d6afaf7", "tree": "bbfea12d2234930fd67644fa281d11c8ab850460", "parents": [ "51b643b404827d8fde60d7953773a42d46ca87e0" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 11:21:08 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 21:14:58 2009 -0400" }, "message": "tracing: fix comments about trace buffer resizing\n\nImpact: cleanup\n\nSome of the comments about the trace buffer resizing is gobbledygook.\nAnd I wonder why people question if I\u0027m a native English speaker.\n\nThis patch makes the comments make a bit more sense.\n\nReported-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "51b643b404827d8fde60d7953773a42d46ca87e0", "tree": "ae71fcbd8b3640b68fc11e1dca620a8ee96bac5f", "parents": [ "554f786e284a6ce859d51f62240d615603944c8e", "480c93df5b99699390f93a7024c9f60d09da0e96" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 21:12:46 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Thu Mar 12 21:12:46 2009 -0400" }, "message": "Merge branch \u0027tracing/ftrace\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip into trace/tip/tracing/ftrace-merge\n" }, { "commit": "480c93df5b99699390f93a7024c9f60d09da0e96", "tree": "b93b6c8c71c5f2e716dd05b126e01ef4e20ff0af", "parents": [ "aecfcde920da8d32949f6cbbc1fc051b4ef9e7be", "d820ac4c2fa881079e6b689d2098adce337558ae" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 01:33:21 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 01:33:21 2009 +0100" }, "message": "Merge branch \u0027core/locking\u0027 into tracing/ftrace\n" }, { "commit": "d820ac4c2fa881079e6b689d2098adce337558ae", "tree": "39e4e989d22271cd401f6974c9ae7accc571d500", "parents": [ "3c1f67d60e2b4f4455563928999fd41cc653645d" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 01:30:40 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 01:32:36 2009 +0100" }, "message": "locking: rename trace_softirq_[enter|exit] \u003d\u003e lockdep_softirq_[enter|exit]\n\nImpact: cleanup\n\nThe naming clashes with upcoming softirq tracepoints, so rename the\nAPIs to lockdep_*().\n\nRequested-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "3c1f67d60e2b4f4455563928999fd41cc653645d", "tree": "0d58c145a05fb09167f1ab6882b474eccb1f3563", "parents": [ "03d78913f01e8f6599823f00357ed17b32747d3d", "9ead64974b05501bbac0d63a47c99fa786d064ba" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 01:29:17 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 13 01:29:17 2009 +0100" }, "message": "Merge branch \u0027linus\u0027 into core/locking\n" }, { "commit": "554f786e284a6ce859d51f62240d615603944c8e", "tree": "d3710f97dac93861b3ff1f389276e643798f9b2e", "parents": [ "9aba60fe6eb20453de53a572143bef22fa929fba" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Mar 11 22:00:13 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Mar 11 22:15:27 2009 -0400" }, "message": "ring-buffer: only allocate buffers for online cpus\n\nImpact: save on memory\n\nCurrently, a ring buffer was allocated for each \"possible_cpus\". On\nsome systems, this is the same as NR_CPUS. Thus, if a system defined\nNR_CPUS \u003d 64 but it only had 1 CPU, we could have possibly 63 useless\nring buffers taking up space. With a default buffer of 3 megs, this\ncould be quite drastic.\n\nThis patch changes the ring buffer code to only allocate ring buffers\nfor online CPUs. If a CPU goes off line, we do not free the buffer.\nThis is because the user may still have trace data in that buffer\nthat they would like to look at.\n\nPerhaps in the future we could add code to delete a ring buffer if\nthe CPU is offline and the ring buffer becomes empty.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "9aba60fe6eb20453de53a572143bef22fa929fba", "tree": "97df44bc298fe40719d6f08000d96532d3ecf27e", "parents": [ "1852fcce181faa237c010a3dbedb473cf9d4555f" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Mar 11 19:52:30 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Mar 11 22:15:25 2009 -0400" }, "message": "tracing: fix trace_wait to know to wait on all cpus or just one\n\nImpact: fix to task live locking on reading trace_pipe on one CPU\n\nThe same code is used for both trace_pipe (all CPUS) and the per_cpu\ntrace_pipe file. When there is no data to read, it will check for\nsignals and wait on the trace wait queue.\n\nThe problem happens with the per_cpu wait. The trace_wait code checks\nall CPUs. Thus, if there\u0027s data in another CPU buffer, then it will\nexit the wait, without checking for signals or waiting on the wait queue.\n\nIt would then try to read the empty buffer, and since that will just\nreturn nothing, then it will try to wait again. Unfortunately, that will\nagain fail due to there still being data in the other buffers. This\nends up with a live lock for the task.\n\nThis patch fixes the trace_wait to be aware that the iterator may only\nbe waiting on a single buffer.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "1852fcce181faa237c010a3dbedb473cf9d4555f", "tree": "863cd12b573fd36436e7fb042f9bd96a73a9f725", "parents": [ "73c5162aa362a543793f4a957c6c536dcbaa89ce" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Mar 11 14:33:00 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Mar 11 22:15:24 2009 -0400" }, "message": "tracing: expand the ring buffers when an event is activated\n\nTo save memory, the tracer ring buffers are set to a minimum.\nThe activating of a trace expands the ring buffer size. This patch\nadds this expanding, when an event is activated.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "73c5162aa362a543793f4a957c6c536dcbaa89ce", "tree": "ca318ef3da72aac3f809583967185c0b34998c94", "parents": [ "80370cb758e7ca2692cd9fb5e413d970b1f4b2b2" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Mar 11 13:42:01 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Wed Mar 11 22:15:22 2009 -0400" }, "message": "tracing: keep ring buffer to minimum size till used\n\nImpact: less memory impact on systems not using tracer\n\nWhen the kernel boots up that has tracing configured, it allocates\nthe default size of the ring buffer. This currently happens to be\n1.4Megs per possible CPU. This is quite a bit of wasted memory if\nthe system is never using the tracer.\n\nThe current solution is to keep the ring buffers to a minimum size\nuntil the user uses them. Once a tracer is piped into the current_tracer\nthe ring buffer will be expanded to the default size. If the user\nchanges the size of the ring buffer, it will take the size given\nby the user immediately.\n\nIf the user adds a \"ftrace\u003d\" to the kernel command line, then the ring\nbuffers will be set to the default size on initialization.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "aecfcde920da8d32949f6cbbc1fc051b4ef9e7be", "tree": "c332ce67ef065978b07a889109394fda421c0581", "parents": [ "e2b8b2808538a91444e78c7db5a30519cadd09b2", "80370cb758e7ca2692cd9fb5e413d970b1f4b2b2" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 11 20:47:23 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Mar 11 20:47:23 2009 +0100" }, "message": "Merge branch \u0027tip/tracing/ftrace\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into tracing/ftrace\n" }, { "commit": "be50b8342dead8cacf57d4839240106b225d31f5", "tree": "a5f40b583e4c008313b090426fa785d178348e76", "parents": [ "d58ab5cf09679d8cb4824e22cae900c0eab5ab31" ], "author": { "name": "Dhaval Giani", "email": "dhaval@linux.vnet.ibm.com", "time": "Tue Mar 10 12:55:56 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Mar 10 15:55:11 2009 -0700" }, "message": "kernel/user.c: fix a memory leak when freeing up non-init usernamespaces users\n\nWe were returning early in the sysfs directory cleanup function if the\nuser belonged to a non init usernamespace. Due to this a lot of the\ncleanup was not done and we were left with a leak. Fix the leak.\n\nReported-by: Serge Hallyn \u003cserue@linux.vnet.ibm.com\u003e\nSigned-off-by: Dhaval Giani \u003cdhaval@linux.vnet.ibm.com\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nTested-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e2b8b2808538a91444e78c7db5a30519cadd09b2", "tree": "60c45581817db746bd61670f5c95b19c2661daa0", "parents": [ "4dd163a0512eb91bbcf4e66d2f65b8e4042561b3", "ef18012b248b47ec9a12c3a83ca5e99782d39c5d" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 10 22:55:31 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 10 22:55:31 2009 +0100" }, "message": "Merge branch \u0027tip/tracing/ftrace\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into tracing/ftrace\n" }, { "commit": "4dd163a0512eb91bbcf4e66d2f65b8e4042561b3", "tree": "88f8f450ef038c36f3620c79635b2e22e3b0528a", "parents": [ "6cc3c6e12bb039047974ad2e7e2d46d15a1b762f", "7cf49427042400d40bdc80b5c3399b6b5945afa8", "99adcd9d67aaf04e28f5ae96df280f236bde4b66" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 10 22:54:23 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 10 22:54:23 2009 +0100" }, "message": "Merge branches \u0027tracing/ftrace\u0027, \u0027tracing/textedit\u0027 and \u0027linus\u0027 into tracing/core\n" }, { "commit": "80370cb758e7ca2692cd9fb5e413d970b1f4b2b2", "tree": "2c1451f4a374d8b7a515fe39b4bb24bb6a323db9", "parents": [ "ef18012b248b47ec9a12c3a83ca5e99782d39c5d" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 10 17:16:35 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 10 17:16:35 2009 -0400" }, "message": "tracing: use raw spinlocks for trace_vprintk\n\nImpact: prevent locking up by lockdep tracer\n\nThe lockdep tracer uses trace_vprintk and thus trace_vprintk can not\ncall back into lockdep without locking up.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "6cc3c6e12bb039047974ad2e7e2d46d15a1b762f", "tree": "1c3ff8b51757674ead536a3220c0da14608ee267", "parents": [ "2395037e5dd6841a6fa23afbb31e79d92e549cd1" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Tue Mar 10 19:03:43 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 10 20:03:01 2009 +0100" }, "message": "trace_clock: fix preemption bug\n\nUsing the function_graph tracer in recent kernels generates a spew of\npreemption BUGs. Fix this by not requiring trace_clock_local() users\nto disable preemption themselves.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "ef18012b248b47ec9a12c3a83ca5e99782d39c5d", "tree": "8103b4d14c6b81a6a5ec39cd43e4ca7ffb51625d", "parents": [ "0e3d0f0566f3fcf664782f597070bbc669d78454" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 10 14:10:56 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 10 14:13:14 2009 -0400" }, "message": "tracing: remove funky whitespace in the trace code\n\nImpact: clean up\n\nThere existed a lot of \u003cspace\u003e\u003ctab\u003e\u0027s in the tracing code. This\npatch removes them.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "0e3d0f0566f3fcf664782f597070bbc669d78454", "tree": "11ce48020cc45e8e168c7bd89a88b55a6bbefaed", "parents": [ "823f9124fb2e33eeb624d139978a52089f8a02ae" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 10 13:12:58 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 10 13:12:58 2009 -0400" }, "message": "tracing: update comments to match event code macros\n\nImpact: clean up / comments\n\nThe comments that described the ftrace macros to manipulate the\nTRACE_EVENT and TRACE_FORMAT macros no longer match the code.\nThis patch updates them.\n\nReported-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "30a8fecc2d34f086df34fe2f2b926f080e002600", "tree": "a6959a40a6a3065b61ddcf4954861dfd8892a843", "parents": [ "2314c4ae1461c9e8b26cf8b9a851f280bc5769e1" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 10 12:41:38 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 10 12:41:38 2009 -0400" }, "message": "tracing: flip the TP_printk and TP_fast_assign in the TRACE_EVENT macro\n\nImpact: clean up\n\nIn trying to stay consistant with the C style format in the TRACE_EVENT\nmacro, it makes more sense to do the printk after the assigning of\nthe variables.\n\nReported-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "2314c4ae1461c9e8b26cf8b9a851f280bc5769e1", "tree": "c6f55179012c6997f77fa523f542efdfd1104c24", "parents": [ "40e26815fafd3b8c4aced17b1f22e68ef33eb8db" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 10 12:04:02 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 10 12:04:02 2009 -0400" }, "message": "tracing: add back the available_events file\n\nThe event directory files type and available_types were no longer\nneeded with the new TRACE_EVENT_FORMAT macros, they were deleted.\nBut by accident the available_events file was also removed.\nThis patch brings it back.\n\nReported-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "40e26815fafd3b8c4aced17b1f22e68ef33eb8db", "tree": "ace92f7335ad97144d57ef91af0b82da88db4335", "parents": [ "ce8eb2bf05042452107e489782105d2e235cbdd0" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 10 11:32:40 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 10 11:32:40 2009 -0400" }, "message": "tracing: do not allow modifying the ftrace events via the event files\n\nImpact: fix to prevent crash on calling NULL function pointer\n\nThe ftrace internal records have their format exported via the event\nsystem under the ftrace subsystem. These are only for exporting the\nformat to allow binary readers to be able to parse them in a binary\noutput.\n\nThe ftrace subsystem events can only be enabled via the ftrace tracers\nand do not have a registering function. The event files expect the\nevent record to have registering function and will call it directly.\nPassing in a ftrace subsystem event will cause the kernel to crash\nbecause it will execute a NULL pointer.\n\nThis patch prevents the ftrace subsystem from being viewable to the\nevent enabling files.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "ce8eb2bf05042452107e489782105d2e235cbdd0", "tree": "f90790e543c221e3b0bac963bd8afa96e79a06ed", "parents": [ "157587d7ac555458da9f682e3250135e468470a6" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 10 10:14:35 2009 -0400" }, "committer": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Tue Mar 10 10:14:35 2009 -0400" }, "message": "tracing: fix printk format specifier\n\nImpact: clean up\n\nThe offsetof and sizeof are of type size_t, and instead of typecasting\nthem to unsigned int for printk formatting, one could just use %zu.\n\nReported-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\n" }, { "commit": "bbcd3063597a3824357cd83c501c2a2aa21ef37b", "tree": "4da63cbe8e3740fd9645fbbf6aeeed5d21ac6437", "parents": [ "8293dd6f86e759068ce918aa10ca9c5d6d711cd0" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Tue Mar 10 10:49:53 2009 +0900" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 10 10:20:30 2009 +0100" }, "message": "tracing: Don\u0027t assume possible cpu list have continuous numbers\n\n\"for (++cpu ; cpu \u003c num_possible_cpus(); cpu++)\" statement assumes\npossible cpus have continuous number - but that\u0027s a wrong assumption.\n\nInsted, cpumask_next() should be used.\n\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Steven Rostedt \u003csrostedt@redhat.com\u003e\nCc: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nLKML-Reference: \u003c20090310104437.A480.A69D9226@jp.fujitsu.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "8293dd6f86e759068ce918aa10ca9c5d6d711cd0", "tree": "de366d69078bf2b98c6765fa4ec1cc652f3d3173", "parents": [ "631595fbf4aeac260e664a8a002897e4db6a50dd", "467c88fee51e2ae862e9485245687da0730e29aa" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 10 10:16:17 2009 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 10 10:17:48 2009 +0100" }, "message": "Merge branch \u0027x86/core\u0027 into tracing/ftrace\n\nSemantic merge:\n\n kernel/trace/trace_functions_graph.c\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" } ], "next": "9a1043d19c4edc4ff1d80081a39809a506a62e4d" }