)]}' { "log": [ { "commit": "afc2abc0ae4265730a0fc48618012193a09a1d10", "tree": "1ae91505e067f63e9a7d02d3a3af731af59abee1", "parents": [ "93dcc6ea096c51cc30ad0f6647ed05fead2439bf" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:21:00 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:50:50 2008 +0200" }, "message": "ftrace: cleanups\n\nno code changed.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "93dcc6ea096c51cc30ad0f6647ed05fead2439bf", "tree": "2490074ca4ee97e8ef9d4cbaa10bca8a4cd1a597", "parents": [ "bb065afb8ebd07a03155502dba29ebf0f6fe67e8" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Mon May 12 21:21:00 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:50:38 2008 +0200" }, "message": "ftrace: simplify hexprint\n\nsimplify hex to ascii conversion.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "a98a3c3fde3ae7614f19758a043691b6f59dac53", "tree": "7a04e3e7c1748ee5b258e5176e10e1fe13468001", "parents": [ "05bd68c514579e007b46e4fa0461b78416a3f4c2" ], "author": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon May 12 21:20:59 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:49:54 2008 +0200" }, "message": "ftrace: trace_entries to dynamically change trace buffer size\n\nThis patch adds /debug/tracing/trace_entries that allows users to\nsee as well as modify the number of trace entries the buffers hold.\n\nThe number of entries only increments in ENTRIES_PER_PAGE which is\ncalculated by the size of an entry with the number of entries that\ncan fit in a page. The user does not need to use an exact size, but\nthe entries will be rounded to one of the increments.\n\nTrying to set the entries to 0 will return with -EINVAL.\n\nTo avoid race conditions, the modification of the buffer size can only\nbe done when tracing is completely disabled (current_tracer \u003d\u003d none).\nA info message will be printed if a user tries to modify the buffer size\nwhen not set to none.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "05bd68c514579e007b46e4fa0461b78416a3f4c2", "tree": "0808f0191aa696f4dd593690798a94351dbb407c", "parents": [ "2dc8f09571a61d9cb3dc47bba6608689dfe15d16" ], "author": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon May 12 21:20:59 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:49:42 2008 +0200" }, "message": "ftrace: user proper API for setting RT prios in selftest\n\nThe wakeup selftest used an internal API for setting the test task priority.\nThis patch fixes it to use the proper API for performing such a task.\n\nThanks goes to Randy Dunlap for pointing out this build failure.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "2dc8f09571a61d9cb3dc47bba6608689dfe15d16", "tree": "5f23089a821ecff3ae9c57206b10d911f67cd279", "parents": [ "845279972f1736c3463c9cebd1bad92a0a347176" ], "author": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon May 12 21:20:58 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:47:07 2008 +0200" }, "message": "ftrace: trace_pipe implement NONBLOCK\n\nThis patch implements \"NONBLOCK\" for trace_pipe. If the trace_pipe is opened\nwith O_NONBLOCK, then the trace_pipe read will not block when buffer is empty.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "845279972f1736c3463c9cebd1bad92a0a347176", "tree": "f71598851ca347068940ecce23458cad06120f6d", "parents": [ "b5685aede3b7b65e72ddc73b951aa1f70798a614" ], "author": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon May 12 21:20:58 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:47:01 2008 +0200" }, "message": "ftrace: return EOF in trace_pipe on change of tracer\n\nBreak out of while loop with EOF when the current_trace changes.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "b5685aede3b7b65e72ddc73b951aa1f70798a614", "tree": "12d198a161c360ed900db504067a46c4662eb21a", "parents": [ "8487c23765b6e0444ec6b5f1530766d63fe68e35" ], "author": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon May 12 21:20:58 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:46:53 2008 +0200" }, "message": "ftrace: restore iterator trace in pipe read\n\nThe trace iterator is reset in the read. We still need to restore the tracer\nthat the trace_pipe was opened with.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "8487c23765b6e0444ec6b5f1530766d63fe68e35", "tree": "5b3eb6b2361dc756dd3e22173e1d508923700fad", "parents": [ "d17d969160c18b631a19c2b34d260691402650f8" ], "author": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon May 12 21:20:58 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:46:39 2008 +0200" }, "message": "ftrace: allow trace_pipe to block on all reads\n\nWe expect things like \"cat\" to block on reads to trace_pipe. That\u0027s what\ntrace_pipe is for.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "d17d969160c18b631a19c2b34d260691402650f8", "tree": "7be3269a644d164021d1e57effe3b1f57b3adb7a", "parents": [ "72829bc3d63cdc592d8f7dd86ad3b3fe8900fb74" ], "author": { "name": "Ankita Garg", "email": "ankita@in.ibm.com", "time": "Mon May 12 21:20:58 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:46:30 2008 +0200" }, "message": "ftrace: fix conversion of task state to char in latency tracer\n\nThe conversion of task states to a character in the sched_switch tracer (part\nof latency tracer infrastructure), seems to be incorrect. We currently do it\nby indexing into the state_to_char array using the state value. The state\nvalues do not map directly into the array index and are thus incorrect. The\nfollowing patch addresses this issue. This is also what is being done even\nin the show_task() routine in kernel/sched.c\n\nThe patch has been compile and run tested.\n\nSigned-off-by: Ankita Garg \u003cankita@in.ibm.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "72829bc3d63cdc592d8f7dd86ad3b3fe8900fb74", "tree": "c4652b60b17d6087a492387e71c00cec4885cb30", "parents": [ "86069782d62e731b4835a0cf8eb7d1d0e17cf306" ], "author": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:37:28 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:37:28 2008 +0200" }, "message": "ftrace: move enums to ftrace.h and make helper function global\n\npicked from the mmiotracer patches to distangle the patch queues.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "30afdcb1de0a37a2086145a82ca3febebe47d019", "tree": "866c4d195207ac37d4477f9ce09d429085532180", "parents": [ "d15f57f23eaba975309a153b23699cd0c0236974" ], "author": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon May 12 21:20:56 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:15:59 2008 +0200" }, "message": "ftrace: selftest protect againt max flip\n\nThere is a slight race condition in the selftest where the max update\nof the wakeup and irqs/preemption off tests can be doing a max update as\nthe buffers are being tested. If this happens the system can crash with\na GPF.\n\nThis patch adds the max update spinlock around the checking of the\nbuffers to prevent such a race.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "d15f57f23eaba975309a153b23699cd0c0236974", "tree": "8bff39ab0bae5727e691f88e783a2d5cfec2afb1", "parents": [ "07a267cdd2fd7d1de9455b1e36a1635ace7276c7" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:56 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:15:52 2008 +0200" }, "message": "ftrace: fix mutex unlock in trace output\n\nIf the trace output changes on reading the trace files, there is a chance\nthat the start function will return NULL. If the start function of a sequence\nreturns NULL the stop equivalent is not called. In this case, all locks\nthat are taken must be released even if they are released in the stop function.\n\nThis patch fixes a case that a mutex was not released on return of NULL\nin the start sequence function.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "07a267cdd2fd7d1de9455b1e36a1635ace7276c7", "tree": "886495b48c0e10866aa92e61e0dbd247a7e80e25", "parents": [ "c1d2327b36f2261ffa8ff7227321ba900c7eee7f" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:55 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:15:42 2008 +0200" }, "message": "ftrace: add UNINTERRUPTIBLE state for kftraced on disable\n\nWhen dynamic ftrace fails and sets itself disabled, the ftraced daemon\nwill go back to sleep everytime it wakes up. The setting of the\nftraced state to UNINTERRUPTIBLE is skipped in this process, and the\ndaemon takes up 100% of the CPU. This patch makes sure the ftraced daemon\nsets itself to UNINTERRUPTIBLE in that loop.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "c1d2327b36f2261ffa8ff7227321ba900c7eee7f", "tree": "2d09d1fe2e07c097b18c2573bd03189cffa82e71", "parents": [ "1d09daa55d2e9bab7e7d30f0d05e5a7bc60b2a4a" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:55 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:15:29 2008 +0200" }, "message": "ftrace: restrict tracing to HAVE_FTRACE architectures\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "92205c2343527a863d660360599a4bf8cede77b0", "tree": "c85cf8495cd2eb52a99062e3505cd81851cd3444", "parents": [ "c5f888cae49dfe3e86d9d1e0dab2b63ceb057be3" ], "author": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon May 12 21:20:55 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:14:11 2008 +0200" }, "message": "ftrace: user raw_spin_lock in tracing\n\nLock debugging enabled cause huge performance problems for tracing. Having\nthe lock verification happening for every function that is called\nbecause mcount calls spin_lock can cripple the system.\n\nThis patch converts the spin_locks used by ftrace into raw_spin_locks.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "c5f888cae49dfe3e86d9d1e0dab2b63ceb057be3", "tree": "e276b5299b52ccbe8b89492d398fe63652cddd49", "parents": [ "4d9493c90f8e6e1b164aede3814010a290161abb" ], "author": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon May 12 21:20:55 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:13:41 2008 +0200" }, "message": "ftrace: irqsoff use raw_smp_processor_id\n\nThis patch changes the use of __get_cpu_var to explicitly calling\nraw_smp_processor_id and using the per_cpu() macro. On some debug\nconfigurations, the use of __get_cpu_var may cause ftrace to trigger\nand this can cause problems with the irqsoff tracing.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "4d9493c90f8e6e1b164aede3814010a290161abb", "tree": "ff92e089d2da9fb5a40511d81f8e57a7e06fdf80", "parents": [ "d05cdb25d80f06f77aa6bddb53cd1390d4d91a0b" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:54 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:13:32 2008 +0200" }, "message": "ftrace: remove add-hoc code\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "d05cdb25d80f06f77aa6bddb53cd1390d4d91a0b", "tree": "6c7f70f5252cbd42a1949c2d7019fe9f337bd205", "parents": [ "06fa75ab566c50e01bfd7b055bde85cf9b1bc98a" ], "author": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon May 12 21:20:54 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:13:23 2008 +0200" }, "message": "ftrace: fix dynamic ftrace selftest\n\nWith the adding of the configuration changes in the Makefile to prevent\ntracing of functions in the ftrace code, all tracing of all the ftrace\ncode has been removed. Unfortunately, one of the selftests, relied on\na function to be traced. With the new change, the function was no longer\ntraced and the test failed.\n\nThis patch separates out the test function into its own file so that\nwe can add the \"-pg\" flag to the compilation of that function and the\nadding of the mcount call to that function.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "06fa75ab566c50e01bfd7b055bde85cf9b1bc98a", "tree": "bd035abc01242a153f9802e90a56bbbdf3b1908f", "parents": [ "4fe8c3048cd8280a54256bca9cac2007bd546c33" ], "author": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon May 12 21:20:54 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:13:12 2008 +0200" }, "message": "ftrace: add TRACE_STACK and TRACE_SPECIAL to selftest validation\n\nThe selftest validation code checks for valid entries in the trace buffer.\nTRACE_STACK and TRACE_SPECIAL have been added to the code but not to\nthe validator. This patch adds the two to prevent them from flagging a\nfailure in the selftest.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "4fe8c3048cd8280a54256bca9cac2007bd546c33", "tree": "b6bba481a3dde79a027654675d3b34da24ca54f2", "parents": [ "8f96da02c14d722ad9a3713cd7273ce28c9036ad" ], "author": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon May 12 21:20:54 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:13:02 2008 +0200" }, "message": "ftrace: printk and trace irqsoff and wakeups\n\nprintk called from wakeup critical timings and irqs off can\ncause deadlocks since printk might do a wakeup itself. If the\ncall to printk happens with the runqueue lock held, it can\ndeadlock.\n\nThis patch protects the printk from being called in trace irqs off\nwith a test to see if the runqueue for the current CPU is locked.\nIf it is locked, the printk is skipped.\n\nThe wakeup always holds the runqueue lock, so the printk is\nsimply removed.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "8f96da02c14d722ad9a3713cd7273ce28c9036ad", "tree": "ec90d905b59b191c2bc8b4e9e9d579c3f2589293", "parents": [ "694379e9ed4f2f6babe111bf001c69e2e263338b" ], "author": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon May 12 21:20:54 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:12:48 2008 +0200" }, "message": "ftrace: remove wakeup from function trace\n\ntrace_function is called by mcount and calling wake_up from that\ncan have unpredictable results. This patch removes the wakeup from\ntrace_function.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "694379e9ed4f2f6babe111bf001c69e2e263338b", "tree": "9ce5695c9e650c802b23096d6fe58c0fe626538e", "parents": [ "5429db2d26a59903c81a4f6c6dae7eb9daaea5fc" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:54 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:12:26 2008 +0200" }, "message": "ftrace: make it more available in the Kconfig\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "bac524d3f3dfeffa3a9d44f2c64035b88bcaacb4", "tree": "467645f4b40dcd4aa8f37f0f601ffc7b07048273", "parents": [ "88a4216c3ec4281fc7e6725cc3a3ccd01fb1aa14" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Mon May 12 21:20:53 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:08:54 2008 +0200" }, "message": "ftrace: trace next state\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "88a4216c3ec4281fc7e6725cc3a3ccd01fb1aa14", "tree": "3d93bdfa757da02953ec2532f7504a2e7f81ea78", "parents": [ "36fc25a9f48deacd8aa08cd2d1c186a4e412604f" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:53 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:08:47 2008 +0200" }, "message": "ftrace: sched special\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "f29c73fe3404f8799ed57aaf48859e0b55fc071f", "tree": "d434b35e9a87f6d1120c61b002d78f1516d2ee58", "parents": [ "442e544ce52d4415a024920b84fb95c5f9aa0855" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:53 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:08:20 2008 +0200" }, "message": "ftrace: include cpu in stacktrace\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "442e544ce52d4415a024920b84fb95c5f9aa0855", "tree": "c8b80e68d2d655732f1bdde79fa896c77d8d2c96", "parents": [ "d9af56fbd8b37181bffaad060f74aa2e17382874" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:53 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:08:12 2008 +0200" }, "message": "ftrace: iter ctrl fix\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "d9af56fbd8b37181bffaad060f74aa2e17382874", "tree": "265ac086e53c8191e8bc19fef98b2dea8cc93723", "parents": [ "36dfe9252bd4c9b55e8454363fb7e444c92c5030" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:53 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:07:57 2008 +0200" }, "message": "ftrace: fix cmdline tracing\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "36dfe9252bd4c9b55e8454363fb7e444c92c5030", "tree": "ed25ba387bc8b27484b93f4acf402ccc622a293f", "parents": [ "c7078de1aaf562a31b20984409c38cc1b40fa8a3" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:52 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:07:49 2008 +0200" }, "message": "ftrace: make use of tracing_cpumask\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "c7078de1aaf562a31b20984409c38cc1b40fa8a3", "tree": "6e923c69b1a4a66c7bed658d0f923d581281005e", "parents": [ "4ac3ba41d372e3a9e420b36bc43589662b188a14" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:52 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:07:41 2008 +0200" }, "message": "ftrace: add tracing_cpumask\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "4ac3ba41d372e3a9e420b36bc43589662b188a14", "tree": "b8dd93a0226a92b5f55e5ff1e51712424a7be729", "parents": [ "1a3c3034336320554a3342572dae98d69e054fc7" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:52 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:07:31 2008 +0200" }, "message": "ftrace: trace scheduler rbtree\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "1a3c3034336320554a3342572dae98d69e054fc7", "tree": "b28ca59b09a0e2d3c3be61dba2e864526383ae1e", "parents": [ "017730c11241e26577673eb9d957cfc66172ea91" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:52 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:07:20 2008 +0200" }, "message": "ftrace: fix __trace_special()\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "017730c11241e26577673eb9d957cfc66172ea91", "tree": "3585323be944d23814b3e28b50042b7477cc9206", "parents": [ "24cd5d111e8c713e62cda7ca1d01232402e3d3c9" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:52 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:05:02 2008 +0200" }, "message": "ftrace: fix wakeups\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "4e65551905fb0300ae7e667cbaa41ee2e3f29a13", "tree": "0e642c311e31043eecf86c218128c40e1ddac782", "parents": [ "4c1f4d4f0175129934d5dbc19a39296430937a05" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:52 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:04:44 2008 +0200" }, "message": "ftrace: sched tracer, trace full rbtree\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "4c1f4d4f0175129934d5dbc19a39296430937a05", "tree": "4926ad2ff50936ae5ddaa139eba815ce1f1e62a8", "parents": [ "8ac0fca4ccb355ce50471d7aa3f10f5900b28b95" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:51 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:04:36 2008 +0200" }, "message": "ftrace: make nostacktrace the default\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "8ac0fca4ccb355ce50471d7aa3f10f5900b28b95", "tree": "39b9f0b863692d6e3f23eef85bed68072734d6fb", "parents": [ "86387f7ee5d3273ff4859e2c64ce656639b6ca65" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:51 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:04:28 2008 +0200" }, "message": "ftrace: sched tracer fix\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "86387f7ee5d3273ff4859e2c64ce656639b6ca65", "tree": "d2080c680e9e9415dfa99bb8408302584035e664", "parents": [ "57422797dc009fc83766bcf230d29dbe6e08e21e" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:51 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:04:20 2008 +0200" }, "message": "ftrace: add stack tracing\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "57422797dc009fc83766bcf230d29dbe6e08e21e", "tree": "9ba5768539c08d99679f72a9709f5e345fd359c9", "parents": [ "e309b41dd65aa953f86765eeeecc941d8e1e8b8f" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:51 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 21:04:06 2008 +0200" }, "message": "ftrace: add wakeup events to sched tracer\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "e309b41dd65aa953f86765eeeecc941d8e1e8b8f", "tree": "295d4ed6e2a766607f889a04b977ca27cc24929e", "parents": [ "b53dde9d34f2df396540988ebc65c33400f57b04" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:51 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:58:28 2008 +0200" }, "message": "ftrace: remove notrace\n\nnow that we have a kbuild method for notrace, no need to pollute the\nC code with the annotations.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "b53dde9d34f2df396540988ebc65c33400f57b04", "tree": "1592aebcfd56b4a7abd37bf44f27a01a0c039340", "parents": [ "3594136ad67a54d77bcb2547e70011754a2f91d5" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:51 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:56:53 2008 +0200" }, "message": "ftrace: disable -pg for the tracer itself\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "caf8cdebfb6c1cff50ea8077f1a07c2333d6d1fd", "tree": "848a3350351c7fbe3240bd600237c816ade38625", "parents": [ "9ff9cdb2d3b0971f89e899b3420aadd91bddc215" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:50 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:56:31 2008 +0200" }, "message": "ftrace: remove address of function names\n\nPowerPC is very fragile when it comes to use of function names\nand function addresses. ftrace needs to either use all function\naddresses or function names (i.e. my_func as suppose to \u0026my_func).\n\nThis patch chooses to use the names and not the addresses, and\nmakes ftrace consistent.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "9ff9cdb2d3b0971f89e899b3420aadd91bddc215", "tree": "ad669d9bf015355ce8ea312a9fc140b63e1a4250", "parents": [ "6fb44b717c10ecf37beaaebd312f3afa93fed714" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:50 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:56:05 2008 +0200" }, "message": "ftrace: cleanups\n\nclean up recent code.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "6fb44b717c10ecf37beaaebd312f3afa93fed714", "tree": "a86ec44e761ac9ea2cae992fb6351cbfbea434ac", "parents": [ "2a2cc8f7c4d0dfd75720867f7dc58d24f075edfc" ], "author": { "name": "Steven Rostedt", "email": "srostedt@srostedt@redhat.com", "time": "Mon May 12 21:20:49 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:55:55 2008 +0200" }, "message": "ftrace: add trace_function api for other tracers to use\n\nA new check was added in the ftrace function that wont trace if the CPU\ntrace buffer is disabled. Unfortunately, other tracers used ftrace() to\nwrite to the buffer after they disabled it. The new disable check makes\nthese calls into a nop.\n\nThis patch changes the __ftrace that is called without the check into a\nnew api for the other tracers to use, called \"trace_function\". The other\ntracers use this interface instead when the trace CPU buffer is already\ndisabled.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "2a2cc8f7c4d0dfd75720867f7dc58d24f075edfc", "tree": "58bccce0675debd5619757a45b5aba770bf32d0e", "parents": [ "aeaee8a2c9cb4489f166ca0e39c568e8254faaa6" ], "author": { "name": "Soeren Sandmann Pedersen", "email": "sandmann@redhat.com", "time": "Mon May 12 21:20:49 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:55:43 2008 +0200" }, "message": "ftrace: allow the event pipe to be polled\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "2577046740fe6d77864128c6187c11125c2449ea", "tree": "1d1c691dabce954915551cd06b2b138c287256dd", "parents": [ "5e3ca0ec76fce92daa4eed0d02de9c79b1fe3920" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:49 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:55:22 2008 +0200" }, "message": "ftrace: build fix\n\nno need to backmerge, only affects ftrace-enabled kernels. (which is\nnot the default)\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "5e3ca0ec76fce92daa4eed0d02de9c79b1fe3920", "tree": "684aee668cc10d63fd47c28cd7c804a61fbf2aed", "parents": [ "2e0f57618529a2739a5e1570e6c445c9c966b595" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:49 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:54:55 2008 +0200" }, "message": "ftrace: introduce the \"hex\" output method\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "2e0f57618529a2739a5e1570e6c445c9c966b595", "tree": "3d1b40eff4aa1b00eb4d630a536f2e89ed3411dc", "parents": [ "0fd9e0dac9026df09986a4b201518ae015814aef" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:49 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:54:47 2008 +0200" }, "message": "ftrace: build fix\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "0fd9e0dac9026df09986a4b201518ae015814aef", "tree": "bbc20440973ac0196818a9a1b91fde17148fd8fd", "parents": [ "26994ead1fc8cced63f17e9848edc1771036664e" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:48 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:54:37 2008 +0200" }, "message": "ftrace: use cpu clock again\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "26994ead1fc8cced63f17e9848edc1771036664e", "tree": "bb89509f50cab3e534ea3bc7b9e163688641cb4b", "parents": [ "4eebcc81a33fbc45e28542b50197ed7b3c486d90" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:48 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:54:26 2008 +0200" }, "message": "ftrace: enabled tracing by default\n\nThis patch is the correct way to have tracing enabled by default.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "4eebcc81a33fbc45e28542b50197ed7b3c486d90", "tree": "13bbad50aa8d4dc36d630ef08886876f4dc0b6eb", "parents": [ "37ad508419f0fdfda7b378756eb1f35cfd26d96d" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:48 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:54:16 2008 +0200" }, "message": "ftrace: disable tracing on failure\n\nSince ftrace touches practically every function. If we detect any\nanomaly, we want to fully disable ftrace. This patch adds code\nto try shutdown ftrace as much as possible without doing any more\nharm is something is detected not quite correct.\n\nThis only kills ftrace, this patch does have checks for other parts of\nthe tracer (irqsoff, wakeup, etc.).\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "37ad508419f0fdfda7b378756eb1f35cfd26d96d", "tree": "53db6e201e605c1926adc74fa965b1a615066da8", "parents": [ "088b1e427dbba2af93cb6a7d39258c10ff58dd27" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:48 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:54:04 2008 +0200" }, "message": "ftrace - fix dynamic ftrace memory leak\n\nThe ftrace dynamic function update allocates a record to store the\ninstruction pointers that are being modified. If the modified\ninstruction pointer fails to update, then the record is marked as\nfailed and nothing more is done.\n\nWorse, if the modification fails, but the record ip function is still\ncalled, it will allocate a new record and try again. In just a matter\nof time, will this cause a serious memory leak and crash the system.\n\nThis patch plugs this memory leak. When a record fails, it is\nincluded back into the pool of records to be used. Now a record may\nfail over and over again, but the number of allocated records will\nnot increase.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "088b1e427dbba2af93cb6a7d39258c10ff58dd27", "tree": "c9ed599b9ded73ddf4af6cecc02880ddb5e68245", "parents": [ "dcb6308f2b56720599f6b9d5a01c33e67e69bde4" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:48 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:53:19 2008 +0200" }, "message": "ftrace: pipe fixes\n\nSome fixes for better output with the trace pipe.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "dcb6308f2b56720599f6b9d5a01c33e67e69bde4", "tree": "d9d381fac8d58869ccab6e0b873b68f5371a0703", "parents": [ "f0a920d5752e1788c0cba2add103076bcc0f7a49" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:48 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:53:09 2008 +0200" }, "message": "ftrace, locking fix\n\nshould be an irq-safe lock ...\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "f0a920d5752e1788c0cba2add103076bcc0f7a49", "tree": "db9c5383c3464808570b1121e44f80b817f7f263", "parents": [ "cb0f12aae8d085140d37ada351aa5a8e76c3f9b0" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:47 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:52:33 2008 +0200" }, "message": "ftrace: add trace_special()\n\nfor ad-hoc tracing.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "cb0f12aae8d085140d37ada351aa5a8e76c3f9b0", "tree": "0c0323610849faf0daa6990404636736a5bfbdbd", "parents": [ "f9896bf30928922a3913a3810a4ab7908da6cfe7" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:47 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:43:23 2008 +0200" }, "message": "ftrace: bin-output\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "f9896bf30928922a3913a3810a4ab7908da6cfe7", "tree": "a27337d92d39dfb546cb40373e05b1d648478f46", "parents": [ "8c523a9d82dbc4f3f7d972df8c0f1eacd83d0d55" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:47 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:43:14 2008 +0200" }, "message": "ftrace: add raw output\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "8c523a9d82dbc4f3f7d972df8c0f1eacd83d0d55", "tree": "2317fe9959c6720b29fc466c1ecb8a72ba638d92", "parents": [ "cdd31cd2d7a0dcbec2cce3974f7129dd4fc8c879" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:46 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:43:05 2008 +0200" }, "message": "ftrace: clean-up-pipe-iteration\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "cdd31cd2d7a0dcbec2cce3974f7129dd4fc8c879", "tree": "5da4691e9f2ed0850a505975216694928a6545c4", "parents": [ "53c37c17aafcf50f7c6fddaf01dda8f9d7e31ddf" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:46 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:42:55 2008 +0200" }, "message": "ftrace: remove-idx-sync\n\nremove idx syncing - it\u0027s expensive on SMP.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "53c37c17aafcf50f7c6fddaf01dda8f9d7e31ddf", "tree": "69d04219218c263d43da88068342a4c91a757877", "parents": [ "750ed1a40783432d0dcb0e6c2e813a12615d7664" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:46 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:42:41 2008 +0200" }, "message": "ftrace: fast, scalable, synchronized timestamps\n\nimplement globally synchronized, fast and scalable time source for tracing.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "750ed1a40783432d0dcb0e6c2e813a12615d7664", "tree": "dc2d0eae703ec2ad3fe9a5bc657da5dbe0af2385", "parents": [ "4bf39a9411a4ce8712954e03a9bd1592ee345919" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:46 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:42:31 2008 +0200" }, "message": "ftrace: timestamp syncing, prepare\n\nrename and uninline now() to ftrace_now().\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "4bf39a9411a4ce8712954e03a9bd1592ee345919", "tree": "044694f1c69ec2588e4b60e6b60701bae2a53e81", "parents": [ "d4c5a2f5870939d837293de87b41dda0012a4572" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:46 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:42:20 2008 +0200" }, "message": "ftrace: cleanups\n\nno code changed.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "d4c5a2f5870939d837293de87b41dda0012a4572", "tree": "46512c24ff245052e60b6d2156cd9992d272ff11", "parents": [ "b3806b4316306dc9c542eff6c23d7d42918f3504" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:46 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:42:12 2008 +0200" }, "message": "ftrace: fix locking\n\nwe can hold all cpu trace buffer locks at once - put each into a\nseparate lock class.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "b3806b4316306dc9c542eff6c23d7d42918f3504", "tree": "804786b94728c42930956f1fd8bbcabbba0c7412", "parents": [ "214023c3d13a71525e463b5e54e360b926b4dc90" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:46 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:42:01 2008 +0200" }, "message": "ftrace: user run time file reading\n\nThis patch creates a file called trace_pipe in the tracing\ndebug directory. This file is a consumer of the trace buffers.\nThis means that reads of this file consumes the entries from\nthe trace buffers so that they will not be read a second time,\nas contrast to the static buffers latency_trace and trace.\n\nReading from the trace_pipe will remove the entries from trace\nand latency_trace too.\n\nThe advantage that trace_pipe has is that it can record live\ntraces. It will block when there is nothing in the buffer,\nand read the entries as they are entered. An EOF happens when\ntracing is disabled (tracing_enabled \u003d 0).\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "214023c3d13a71525e463b5e54e360b926b4dc90", "tree": "6fe6f3e513d976b32eb07f60810ccf336daf1f6b", "parents": [ "93a588f459da134be6ab17c4104e28441beb0d22" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:46 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:41:46 2008 +0200" }, "message": "ftrace: add a buffer for output\n\nLater patches will need to print the same things as the seq output\ndoes. But those outputs will not use the seq utility. This patch\nadds a buffer to the iterator, that can be used by either the\nseq utility or other output.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "93a588f459da134be6ab17c4104e28441beb0d22", "tree": "30eb991743d7ce5698f070204d666eca98519213", "parents": [ "1d4db00a5e30c7b8f8dc2a1b19e886fd942be143" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:45 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:41:35 2008 +0200" }, "message": "ftrace: change buffers to producer consumer\n\nThis patch changes the way the CPU trace buffers are handled.\nInstead of always starting from the trace page head, the logic\nis changed to a producer consumer logic. This allows for the\nbuffers to be drained while they are alive.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "1d4db00a5e30c7b8f8dc2a1b19e886fd942be143", "tree": "3a1619ad932674ccaccbf489949c4a14c0e6a494", "parents": [ "08bafa0efcf29fe18ec39c2147077b597368b018" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:45 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:41:29 2008 +0200" }, "message": "ftrace: reset selftests\n\nThe tests may leave stuff in the buffers. This resets the buffers\nafter each test is run. If a test fails, it does not reset the\nbuffer to avoid touching a buffer that is corrupted.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "08bafa0efcf29fe18ec39c2147077b597368b018", "tree": "5b06957e9efd8357eca7d6d8dc57c573cf134d52", "parents": [ "4e3c3333f3bd7eedfd21b1155b3c7cd24fc7f754" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:45 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:41:22 2008 +0200" }, "message": "ftrace: disable all tracers on corrupted buffer\n\nIf the trace buffer is detected to be corrupted, then we\ndisable all tracers.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "4e3c3333f3bd7eedfd21b1155b3c7cd24fc7f754", "tree": "1b53d424c618e646cba8e3a8d6b27b5cec9cb8c2", "parents": [ "77a2b37d227483fe52aead242652aee406c25bf0" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:45 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:41:13 2008 +0200" }, "message": "ftrace: fix time offset\n\nfix time offset calculations and ordering, plus make code more consistent.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "77a2b37d227483fe52aead242652aee406c25bf0", "tree": "cecb6a3a02a567530e2ce3502de18f371c9db7c1", "parents": [ "7bd2f24c2f769e3f8f1d4fc8b9fddf689825f6a7" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:45 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:41:06 2008 +0200" }, "message": "ftrace: startup tester on dynamic tracing.\n\nThis patch adds a startup self test on dynamic code modification\nand filters. The test filters on a specific function, makes sure that\nno other function is traced, exectutes the function, then makes sure that\nthe function is traced.\n\nThis patch also fixes a slight bug with the ftrace selftest, where\ntracer_enabled was not being set.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "7bd2f24c2f769e3f8f1d4fc8b9fddf689825f6a7", "tree": "9c97047804ee0409cf4a6642b3bb92b20703c80e", "parents": [ "c7aafc549766b87819285d3480648fc652a47bc4" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:45 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:40:56 2008 +0200" }, "message": "ftrace: add README\n\nmake it easier for newbies to find their way around.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "c7aafc549766b87819285d3480648fc652a47bc4", "tree": "4c36170a644633f930feca57b27f8c5d23644e70", "parents": [ "60a11774b38fef1ab90b18c5353bd1c7c4d311c8" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon May 12 21:20:45 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:40:46 2008 +0200" }, "message": "ftrace: cleanups\n\nfactor out code and clean it up.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "60a11774b38fef1ab90b18c5353bd1c7c4d311c8", "tree": "e2a6fd066b0dba6dcd776d07383e2932055cf66a", "parents": [ "e1c08bdd9fa73e44096e5a82c0d5928b04ab02c8" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:44 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:40:36 2008 +0200" }, "message": "ftrace: add self-tests\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "e1c08bdd9fa73e44096e5a82c0d5928b04ab02c8", "tree": "eb2c642f9b7b5e222f1635e138c6072b0799f37b", "parents": [ "57f50be14d57b0dbf88dd019e7bb0ff3a3dc7b81" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:44 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:40:29 2008 +0200" }, "message": "ftrace: force recording\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "57f50be14d57b0dbf88dd019e7bb0ff3a3dc7b81", "tree": "57db7ed24d430736c6e106d6119ff80e8169286f", "parents": [ "89b2f97819dd074297bbe3e19eaa4afcc98845ad" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:44 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:40:22 2008 +0200" }, "message": "ftrace: fix max latency\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "89b2f97819dd074297bbe3e19eaa4afcc98845ad", "tree": "250196b493d42ac312b089f8f75866518cc772e6", "parents": [ "18cef379d30f5ded20cc31d7f2d342639d39919d" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:44 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:40:15 2008 +0200" }, "message": "ftrace: fix updates to max trace\n\nThis patch fixes some bugs to the updating of the max trace that\nwas caused by implementing the new buffering.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "18cef379d30f5ded20cc31d7f2d342639d39919d", "tree": "cd193ad51e39cf0987ef815a6ef0cd1017e075ee", "parents": [ "0764d23cf066c52de42b653144605b481d3fbdbc" ], "author": { "name": "Steven Rostedt", "email": "rostedt@goodmis.org", "time": "Mon May 12 21:20:44 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:40:05 2008 +0200" }, "message": "ftrace: don\u0027t use raw_local_irq_save/restore\n\nUsing raw_local_irq_save/restore confuses lockdep.\nIt\u0027s fine to use the normal ones.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "361943ad0ba3f16e66859e30a408915e008ba91e", "tree": "a0d55b7f252e8b69d9c7809a7d2c9521461ab860", "parents": [ "5568b139f4d196273958ae2947a736fdf1ffeece" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:44 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:39:30 2008 +0200" }, "message": "ftrace: irqs off smp_processor_id() fix\n\nThe irqsoff function tracer did a __get_cpu_var to determine\nif it should trace the function or not. The problem is that\n__get_cpu_var can preempt between getting the CPU and reading\nthe cpu variable. This means that the cpu variable that is\nbeing read is not from the cpu being run on.\n\nAt worst, this can give a false positive, where we trace the\nfunction when we should not. It will never give a false negative\nsince we only want to trace when interrupts are disabled\nand we never preempt when they are.\n\nThis fix adds a check after reading the irq flags to only\ntrace if the interrupts are actually disabled. It also changes\nthe reading of the cpu variable to use a raw_smp_processor_id\nsince we now don\u0027t care if we preempt. We still catch that fact.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "4c11d7aed389375253b59e2b1865eec96663c65d", "tree": "b43b5e38c33d69d39b5fb87860e5723d1be10416", "parents": [ "5072c59fd45e9976d02ee6f18c7336ef97623cbc" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:43 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:38:51 2008 +0200" }, "message": "ftrace: convert single large buffer into single pages.\n\nAllocating large buffers for the tracer may fail easily.\nThis patch converts the buffer from a large ordered allocation\nto single pages. It uses the struct page LRU field to link the\npages together.\n\nLater patches may also implement dynamic increasing and decreasing\nof the trace buffers.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "5072c59fd45e9976d02ee6f18c7336ef97623cbc", "tree": "d7c9d48ed518246b958ee7759f285bc22445feb8", "parents": [ "d61f82d06672f57fca410da6f7fffd15867db622" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:43 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:38:41 2008 +0200" }, "message": "ftrace: add filter select functions to trace\n\nThis patch adds two files to the debugfs system:\n\n /debugfs/tracing/available_filter_functions\n\nand\n\n /debugfs/tracing/set_ftrace_filter\n\nThe available_filter_functions lists all functions that has been\nrecorded by the ftraced that has called the ftrace_record_ip function.\nThis is to allow users to see what functions have been converted\nto nops and can be enabled for tracing.\n\nTo enable functions, simply echo the names (whitespace delimited)\ninto set_ftrace_filter. Simple wildcards are also allowed.\n\necho \u0027scheduler\u0027 \u003e /debugfs/tracing/set_ftrace_filter\n\nWill have only the scheduler be activated when tracing is enabled.\n\necho \u0027sched_*\u0027 \u003e /debugfs/tracing/set_ftrace_filter\n\nWill have only the functions starting with \u0027sched_\u0027 be activated.\n\necho \u0027*lock\u0027 \u003e /debugfs/tracing/set_ftrace_filter\n\nWill have only functions ending with \u0027lock\u0027 be activated.\n\necho \u0027*lock*\u0027 \u003e /debugfs/tracing/set_ftrace_filter\n\nWill have only functions with \u0027lock\u0027 in its name be activated.\n\nNote: \u0027sched*lock\u0027 will not work. The only wildcards that are\nallowed is an asterisk and the beginning and or end of the string\npassed in.\n\nMultiple names can be passed in with whitespace delimited:\n\necho \u0027scheduler *lock *acpi*\u0027 \u003e /debugfs/tracing/set_ftrace_filter\n\nis also the same as:\n\necho \u0027scheduler\u0027 \u003e /debugfs/tracing/set_ftrace_filter\necho \u0027*lock\u0027 \u003e\u003e /debugfs/tracing/set_ftrace_filter\necho \u0027*acpi*\u0027 \u003e\u003e /debugfs/tracing/set_ftrace_filter\n\nAppending does just that. It appends to the list.\n\nTo disable all filters simply echo an empty line in:\n\necho \u003e /debugfs/tracing/set_ftrace_filter\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "d61f82d06672f57fca410da6f7fffd15867db622", "tree": "62ef5573934eaa638c0d39a45d789691aecbd7d3", "parents": [ "3c1720f00bb619302ba19d55986ab565e74d06db" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:43 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:33:47 2008 +0200" }, "message": "ftrace: use dynamic patching for updating mcount calls\n\nThis patch replaces the indirect call to the mcount function\npointer with a direct call that will be patched by the\ndynamic ftrace routines.\n\nOn boot up, the mcount function calls the ftace_stub function.\nWhen the dynamic ftrace code is initialized, the ftrace_stub\nis replaced with a call to the ftrace_record_ip, which records\nthe instruction pointers of the locations that call it.\n\nLater, the ftraced daemon will call kstop_machine and patch all\nthe locations to nops.\n\nWhen a ftrace is enabled, the original calls to mcount will now\nbe set top call ftrace_caller, which will do a direct call\nto the registered ftrace function. This direct call is also patched\nwhen the function that should be called is updated.\n\nAll patching is performed by a kstop_machine routine to prevent any\ntype of race conditions that is associated with modifying code\non the fly.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "3c1720f00bb619302ba19d55986ab565e74d06db", "tree": "d58aaa54bc8e7a465597f385de36204c3b0b9cf8", "parents": [ "dfa60aba04dae7833d75b2e2be124bb7cfb8239f" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:43 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:33:35 2008 +0200" }, "message": "ftrace: move memory management out of arch code\n\nThis patch moves the memory management of the ftrace\nrecords out of the arch code and into the generic code\nmaking the arch code simpler.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "b0fc494fae96a7089f3651cb451f461c7291244c", "tree": "586412b9ecbd8e3f04e8cd90a31644f94ff3a7d8", "parents": [ "3d0833953e1b98b79ddf491dd49229eef9baeac1" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:43 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:33:19 2008 +0200" }, "message": "ftrace: add ftrace_enabled sysctl to disable mcount function\n\nThis patch adds back the sysctl ftrace_enabled. This time it is\ndefaulted to on, if DYNAMIC_FTRACE is configured. When ftrace_enabled\nis disabled, the ftrace function is set to the stub return.\n\nIf DYNAMIC_FTRACE is also configured, on ftrace_enabled \u003d 0,\nthe registered ftrace functions will all be set to jmps, but no more\nnew calls to ftrace recording (used to find the ftrace calling sites)\nwill be called.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "3d0833953e1b98b79ddf491dd49229eef9baeac1", "tree": "3520cda824bdb58e47ce3e9f43d68249d5cc1a12", "parents": [ "6cd8a4bb2f97527a9ceb30bc77ea4e959c6a95e3" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:42 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:33:09 2008 +0200" }, "message": "ftrace: dynamic enabling/disabling of function calls\n\nThis patch adds a feature to dynamically replace the ftrace code\nwith the jmps to allow a kernel with ftrace configured to run\nas fast as it can without it configured.\n\nThe way this works, is on bootup (if ftrace is enabled), a ftrace\nfunction is registered to record the instruction pointer of all\nplaces that call the function.\n\nLater, if there\u0027s still any code to patch, a kthread is awoken\n(rate limited to at most once a second) that performs a stop_machine,\nand replaces all the code that was called with a jmp over the call\nto ftrace. It only replaces what was found the previous time. Typically\nthe system reaches equilibrium quickly after bootup and there\u0027s no code\npatching needed at all.\n\ne.g.\n\n call ftrace /* 5 bytes */\n\nis replaced with\n\n jmp 3f /* jmp is 2 bytes and we jump 3 forward */\n3:\n\nWhen we want to enable ftrace for function tracing, the IP recording\nis removed, and stop_machine is called again to replace all the locations\nof that were recorded back to the call of ftrace. When it is disabled,\nwe replace the code back to the jmp.\n\nAllocation is done by the kthread. If the ftrace recording function is\ncalled, and we don\u0027t have any record slots available, then we simply\nskip that call. Once a second a new page (if needed) is allocated for\nrecording new ftrace function calls. A large batch is allocated at\nboot up to get most of the calls there.\n\nBecause we do this via stop_machine, we don\u0027t have to worry about another\nCPU executing a ftrace call as we modify it. But we do need to worry\nabout NMI\u0027s so all functions that might be called via nmi must be\nannotated with notrace_nmi. When this code is configured in, the NMI code\nwill not call notrace.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "6cd8a4bb2f97527a9ceb30bc77ea4e959c6a95e3", "tree": "845af8f3c7f8956b4f3591759a0d67248af243a2", "parents": [ "81d68a96a39844853b37f20cc8282d9b65b78ef3" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:42 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:32:54 2008 +0200" }, "message": "ftrace: trace preempt off critical timings\n\nAdd preempt off timings. A lot of kernel core code is taken from the RT patch\nlatency trace that was written by Ingo Molnar.\n\nThis adds \"preemptoff\" and \"preemptirqsoff\" to /debugfs/tracing/available_tracers\n\nNow instead of just tracing irqs off, preemption off can be selected\nto be recorded.\n\nWhen this is selected, it shares the same files as irqs off timings.\nOne can either trace preemption off, irqs off, or one or the other off.\n\nBy echoing \"preemptoff\" into /debugfs/tracing/current_tracer, recording\nof preempt off only is performed. \"irqsoff\" will only record the time\nirqs are disabled, but \"preemptirqsoff\" will take the total time irqs\nor preemption are disabled. Runtime switching of these options is now\nsupported by simpling echoing in the appropriate trace name into\n/debugfs/tracing/current_tracer.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "81d68a96a39844853b37f20cc8282d9b65b78ef3", "tree": "bbc05f415930c15fb5a1004620bd77585fcec43a", "parents": [ "352ad25aa4a189c667cb2af333948d34692a2d27" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:42 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:32:46 2008 +0200" }, "message": "ftrace: trace irq disabled critical timings\n\nThis patch adds latency tracing for critical timings\n(how long interrupts are disabled for).\n\n \"irqsoff\" is added to /debugfs/tracing/available_tracers\n\nNote:\n tracing_max_latency\n also holds the max latency for irqsoff (in usecs).\n (default to large number so one must start latency tracing)\n\n tracing_thresh\n threshold (in usecs) to always print out if irqs off\n is detected to be longer than stated here.\n If irq_thresh is non-zero, then max_irq_latency\n is ignored.\n\nHere\u0027s an example of a trace with ftrace_enabled \u003d 0\n\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\npreemption latency trace v1.1.5 on 2.6.24-rc7\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n--------------------------------------------------------------------\n latency: 100 us, #3/3, CPU#1 | (M:rt VP:0, KP:0, SP:0 HP:0 #P:2)\n -----------------\n | task: swapper-0 (uid:0 nice:0 policy:0 rt_prio:0)\n -----------------\n \u003d\u003e started at: _spin_lock_irqsave+0x2a/0xb7\n \u003d\u003e ended at: _spin_unlock_irqrestore+0x32/0x5f\n\n _------\u003d\u003e CPU#\n / _-----\u003d\u003e irqs-off\n | / _----\u003d\u003e need-resched\n || / _---\u003d\u003e hardirq/softirq\n ||| / _--\u003d\u003e preempt-depth\n |||| /\n ||||| delay\n cmd pid ||||| time | caller\n \\ / ||||| \\ | /\n swapper-0 1d.s3 0us+: _spin_lock_irqsave+0x2a/0xb7 (e1000_update_stats+0x47/0x64c [e1000])\n swapper-0 1d.s3 100us : _spin_unlock_irqrestore+0x32/0x5f (e1000_update_stats+0x641/0x64c [e1000])\n swapper-0 1d.s3 100us : trace_hardirqs_on_caller+0x75/0x89 (_spin_unlock_irqrestore+0x32/0x5f)\n\nvim:ft\u003dhelp\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n\nAnd this is a trace with ftrace_enabled \u003d\u003d 1\n\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\npreemption latency trace v1.1.5 on 2.6.24-rc7\n--------------------------------------------------------------------\n latency: 102 us, #12/12, CPU#1 | (M:rt VP:0, KP:0, SP:0 HP:0 #P:2)\n -----------------\n | task: swapper-0 (uid:0 nice:0 policy:0 rt_prio:0)\n -----------------\n \u003d\u003e started at: _spin_lock_irqsave+0x2a/0xb7\n \u003d\u003e ended at: _spin_unlock_irqrestore+0x32/0x5f\n\n _------\u003d\u003e CPU#\n / _-----\u003d\u003e irqs-off\n | / _----\u003d\u003e need-resched\n || / _---\u003d\u003e hardirq/softirq\n ||| / _--\u003d\u003e preempt-depth\n |||| /\n ||||| delay\n cmd pid ||||| time | caller\n \\ / ||||| \\ | /\n swapper-0 1dNs3 0us+: _spin_lock_irqsave+0x2a/0xb7 (e1000_update_stats+0x47/0x64c [e1000])\n swapper-0 1dNs3 46us : e1000_read_phy_reg+0x16/0x225 [e1000] (e1000_update_stats+0x5e2/0x64c [e1000])\n swapper-0 1dNs3 46us : e1000_swfw_sync_acquire+0x10/0x99 [e1000] (e1000_read_phy_reg+0x49/0x225 [e1000])\n swapper-0 1dNs3 46us : e1000_get_hw_eeprom_semaphore+0x12/0xa6 [e1000] (e1000_swfw_sync_acquire+0x36/0x99 [e1000])\n swapper-0 1dNs3 47us : __const_udelay+0x9/0x47 (e1000_read_phy_reg+0x116/0x225 [e1000])\n swapper-0 1dNs3 47us+: __delay+0x9/0x50 (__const_udelay+0x45/0x47)\n swapper-0 1dNs3 97us : preempt_schedule+0xc/0x84 (__delay+0x4e/0x50)\n swapper-0 1dNs3 98us : e1000_swfw_sync_release+0xc/0x55 [e1000] (e1000_read_phy_reg+0x211/0x225 [e1000])\n swapper-0 1dNs3 99us+: e1000_put_hw_eeprom_semaphore+0x9/0x35 [e1000] (e1000_swfw_sync_release+0x50/0x55 [e1000])\n swapper-0 1dNs3 101us : _spin_unlock_irqrestore+0xe/0x5f (e1000_update_stats+0x641/0x64c [e1000])\n swapper-0 1dNs3 102us : _spin_unlock_irqrestore+0x32/0x5f (e1000_update_stats+0x641/0x64c [e1000])\n swapper-0 1dNs3 102us : trace_hardirqs_on_caller+0x75/0x89 (_spin_unlock_irqrestore+0x32/0x5f)\n\nvim:ft\u003dhelp\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "352ad25aa4a189c667cb2af333948d34692a2d27", "tree": "83a11c626b3818711d3b88061964c9ea603f7b68", "parents": [ "35e8e302e5d6e32675df2fc1dd3a53dfa6630dc1" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:42 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:32:36 2008 +0200" }, "message": "ftrace: tracer for scheduler wakeup latency\n\nThis patch adds the tracer that tracks the wakeup latency of the\nhighest priority waking task.\n\n \"wakeup\" is added to /debugfs/tracing/available_tracers\n\nAlso added to /debugfs/tracing\n\n tracing_max_latency\n holds the current max latency for the wakeup\n\n wakeup_thresh\n if set to other than zero, a log will be recorded\n for every wakeup that takes longer than the number\n entered in here (usecs for all counters)\n (deletes previous trace)\n\nExamples:\n\n (with ftrace_enabled \u003d 0)\n\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\npreemption latency trace v1.1.5 on 2.6.24-rc8\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n--------------------------------------------------------------------\n latency: 26 us, #2/2, CPU#1 | (M:rt VP:0, KP:0, SP:0 HP:0 #P:2)\n -----------------\n | task: migration/0-3 (uid:0 nice:-5 policy:1 rt_prio:99)\n -----------------\n\n _------\u003d\u003e CPU#\n / _-----\u003d\u003e irqs-off\n | / _----\u003d\u003e need-resched\n || / _---\u003d\u003e hardirq/softirq\n ||| / _--\u003d\u003e preempt-depth\n |||| /\n ||||| delay\n cmd pid ||||| time | caller\n \\ / ||||| \\ | /\n quilt-8551 0d..3 0us+: wake_up_process+0x15/0x17 \u003cffffffff80233e80\u003e (sched_exec+0xc9/0x100 \u003cffffffff80235343\u003e)\n quilt-8551 0d..4 26us : sched_switch_callback+0x73/0x81 \u003cffffffff80338d2f\u003e (schedule+0x483/0x6d5 \u003cffffffff8048b3ee\u003e)\n\nvim:ft\u003dhelp\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n\n (with ftrace_enabled \u003d 1)\n\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\npreemption latency trace v1.1.5 on 2.6.24-rc8\n--------------------------------------------------------------------\n latency: 36 us, #45/45, CPU#0 | (M:rt VP:0, KP:0, SP:0 HP:0 #P:2)\n -----------------\n | task: migration/1-5 (uid:0 nice:-5 policy:1 rt_prio:99)\n -----------------\n\n _------\u003d\u003e CPU#\n / _-----\u003d\u003e irqs-off\n | / _----\u003d\u003e need-resched\n || / _---\u003d\u003e hardirq/softirq\n ||| / _--\u003d\u003e preempt-depth\n |||| /\n ||||| delay\n cmd pid ||||| time | caller\n \\ / ||||| \\ | /\n bash-10653 1d..3 0us : wake_up_process+0x15/0x17 \u003cffffffff80233e80\u003e (sched_exec+0xc9/0x100 \u003cffffffff80235343\u003e)\n bash-10653 1d..3 1us : try_to_wake_up+0x271/0x2e7 \u003cffffffff80233dcf\u003e (sub_preempt_count+0xc/0x7a \u003cffffffff8023309e\u003e)\n bash-10653 1d..2 2us : try_to_wake_up+0x296/0x2e7 \u003cffffffff80233df4\u003e (update_rq_clock+0x9/0x20 \u003cffffffff802303f3\u003e)\n bash-10653 1d..2 2us : update_rq_clock+0x1e/0x20 \u003cffffffff80230408\u003e (__update_rq_clock+0xc/0x90 \u003cffffffff80230366\u003e)\n bash-10653 1d..2 3us : __update_rq_clock+0x1b/0x90 \u003cffffffff80230375\u003e (sched_clock+0x9/0x29 \u003cffffffff80214529\u003e)\n bash-10653 1d..2 4us : try_to_wake_up+0x2a6/0x2e7 \u003cffffffff80233e04\u003e (activate_task+0xc/0x3f \u003cffffffff8022ffca\u003e)\n bash-10653 1d..2 4us : activate_task+0x2d/0x3f \u003cffffffff8022ffeb\u003e (enqueue_task+0xe/0x66 \u003cffffffff8022ff66\u003e)\n bash-10653 1d..2 5us : enqueue_task+0x5b/0x66 \u003cffffffff8022ffb3\u003e (enqueue_task_rt+0x9/0x3c \u003cffffffff80233351\u003e)\n bash-10653 1d..2 6us : try_to_wake_up+0x2ba/0x2e7 \u003cffffffff80233e18\u003e (check_preempt_wakeup+0x12/0x99 \u003cffffffff80234f84\u003e)\n[...]\n bash-10653 1d..5 33us : tracing_record_cmdline+0xcf/0xd4 \u003cffffffff80338aad\u003e (_spin_unlock+0x9/0x33 \u003cffffffff8048d3ec\u003e)\n bash-10653 1d..5 34us : _spin_unlock+0x19/0x33 \u003cffffffff8048d3fc\u003e (sub_preempt_count+0xc/0x7a \u003cffffffff8023309e\u003e)\n bash-10653 1d..4 35us : wakeup_sched_switch+0x65/0x2ff \u003cffffffff80339f66\u003e (_spin_lock_irqsave+0xc/0xa9 \u003cffffffff8048d08b\u003e)\n bash-10653 1d..4 35us : _spin_lock_irqsave+0x19/0xa9 \u003cffffffff8048d098\u003e (add_preempt_count+0xe/0x77 \u003cffffffff8023311a\u003e)\n bash-10653 1d..4 36us : sched_switch_callback+0x73/0x81 \u003cffffffff80338d2f\u003e (schedule+0x483/0x6d5 \u003cffffffff8048b3ee\u003e)\n\nvim:ft\u003dhelp\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n\nThe [...] was added here to not waste your email box space.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "35e8e302e5d6e32675df2fc1dd3a53dfa6630dc1", "tree": "5b5b503666d882bbb4d805b7b20b4f3b11d2c40e", "parents": [ "1b29b01887e6032dcaf818c14999c7a39593b4e7" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:42 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:32:27 2008 +0200" }, "message": "ftrace: add tracing of context switches\n\nThis patch adds context switch tracing, of the format of:\n\n _------\u003d\u003e CPU#\n / _-----\u003d\u003e irqs-off\n | / _----\u003d\u003e need-resched\n || / _---\u003d\u003e hardirq/softirq\n ||| / _--\u003d\u003e preempt-depth\n |||| /\n ||||| delay\n cmd pid ||||| time | pid:prio:state\n \\ / ||||| \\ | /\n swapper-0 1d..3 137us+: 0:140:R --\u003e 2912:120\n sshd-2912 1d..3 216us+: 2912:120:S --\u003e 0:140\n swapper-0 1d..3 261us+: 0:140:R --\u003e 2912:120\n bash-2920 0d..3 267us+: 2920:120:S --\u003e 0:140\n sshd-2912 1d..3 330us!: 2912:120:S --\u003e 0:140\n swapper-0 1d..3 2389us+: 0:140:R --\u003e 2847:120\n yum-upda-2847 1d..3 2411us!: 2847:120:S --\u003e 0:140\n swapper-0 0d..3 11089us+: 0:140:R --\u003e 3139:120\n gdm-bina-3139 0d..3 11113us!: 3139:120:S --\u003e 0:140\n swapper-0 1d..3 102328us+: 0:140:R --\u003e 2847:120\n yum-upda-2847 1d..3 102348us!: 2847:120:S --\u003e 0:140\n\n \"sched_switch\" is added to /debugfs/tracing/available_tracers\n\n[ Eugene Teo \u003ceugeneteo@kernel.sg: remove unused tracing_sched_switch_enabled ]\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nCc: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "1b29b01887e6032dcaf818c14999c7a39593b4e7", "tree": "6bcef64d5a7822b0f259a52b852af8cade6b3468", "parents": [ "bc0c38d139ec7fcd5c030aea16b008f3732e42ac" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:42 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:32:13 2008 +0200" }, "message": "ftrace: function tracer\n\nThis is a simple trace that uses the ftrace infrastructure. It is\ndesigned to be fast and small, and easy to use. It is useful to\nrecord things that happen over a very short period of time, and\nnot to analyze the system in general.\n\n Updates:\n\n available_tracers\n \"function\" is added to this file.\n\n current_tracer\n To enable the function tracer:\n\n echo function \u003e /debugfs/tracing/current_tracer\n\n To disable the tracer:\n\n echo disable \u003e /debugfs/tracing/current_tracer\n\nThe output of the function_trace file is as follows\n\n \"echo noverbose \u003e /debugfs/tracing/iter_ctrl\"\n\npreemption latency trace v1.1.5 on 2.6.24-rc7-tst\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n--------------------------------------------------------------------\n latency: 0 us, #419428/4361791, CPU#1 | (M:desktop VP:0, KP:0, SP:0 HP:0 #P:4)\n -----------------\n | task: -0 (uid:0 nice:0 policy:0 rt_prio:0)\n -----------------\n\n _------\u003d\u003e CPU#\n / _-----\u003d\u003e irqs-off\n | / _----\u003d\u003e need-resched\n || / _---\u003d\u003e hardirq/softirq\n ||| / _--\u003d\u003e preempt-depth\n |||| /\n ||||| delay\n cmd pid ||||| time | caller\n \\ / ||||| \\ | /\n swapper-0 0d.h. 1595128us+: set_normalized_timespec+0x8/0x2d \u003cc043841d\u003e (ktime_get_ts+0x4a/0x4e \u003cc04499d4\u003e)\n swapper-0 0d.h. 1595131us+: _spin_lock+0x8/0x18 \u003cc0630690\u003e (hrtimer_interrupt+0x6e/0x1b0 \u003cc0449c56\u003e)\n\nOr with verbose turned on:\n\n \"echo verbose \u003e /debugfs/tracing/iter_ctrl\"\n\npreemption latency trace v1.1.5 on 2.6.24-rc7-tst\n--------------------------------------------------------------------\n latency: 0 us, #419428/4361791, CPU#1 | (M:desktop VP:0, KP:0, SP:0 HP:0 #P:4)\n -----------------\n | task: -0 (uid:0 nice:0 policy:0 rt_prio:0)\n -----------------\n\n swapper 0 0 9 00000000 00000000 [f3675f41] 1595.128ms (+0.003ms): set_normalized_timespec+0x8/0x2d \u003cc043841d\u003e (ktime_get_ts+0x4a/0x4e \u003cc04499d4\u003e)\n swapper 0 0 9 00000000 00000001 [f3675f45] 1595.131ms (+0.003ms): _spin_lock+0x8/0x18 \u003cc0630690\u003e (hrtimer_interrupt+0x6e/0x1b0 \u003cc0449c56\u003e)\n swapper 0 0 9 00000000 00000002 [f3675f48] 1595.135ms (+0.003ms): _spin_lock+0x8/0x18 \u003cc0630690\u003e (hrtimer_interrupt+0x6e/0x1b0 \u003cc0449c56\u003e)\n\nThe \"trace\" file is not affected by the verbose mode, but is by the symonly.\n\n echo \"nosymonly\" \u003e /debugfs/tracing/iter_ctrl\n\ntracer:\n[ 81.479967] CPU 0: bash:3154 register_ftrace_function+0x5f/0x66 \u003cffffffff80337a4d\u003e \u003c-- _spin_unlock_irqrestore+0xe/0x5a \u003cffffffff8048cc8f\u003e\n[ 81.479967] CPU 0: bash:3154 _spin_unlock_irqrestore+0x3e/0x5a \u003cffffffff8048ccbf\u003e \u003c-- sub_preempt_count+0xc/0x7a \u003cffffffff80233d7b\u003e\n[ 81.479968] CPU 0: bash:3154 sub_preempt_count+0x30/0x7a \u003cffffffff80233d9f\u003e \u003c-- in_lock_functions+0x9/0x24 \u003cffffffff8025a75d\u003e\n[ 81.479968] CPU 0: bash:3154 vfs_write+0x11d/0x155 \u003cffffffff8029a043\u003e \u003c-- dnotify_parent+0x12/0x78 \u003cffffffff802d54fb\u003e\n[ 81.479968] CPU 0: bash:3154 dnotify_parent+0x2d/0x78 \u003cffffffff802d5516\u003e \u003c-- _spin_lock+0xe/0x70 \u003cffffffff8048c910\u003e\n[ 81.479969] CPU 0: bash:3154 _spin_lock+0x1b/0x70 \u003cffffffff8048c91d\u003e \u003c-- add_preempt_count+0xe/0x77 \u003cffffffff80233df7\u003e\n[ 81.479969] CPU 0: bash:3154 add_preempt_count+0x3e/0x77 \u003cffffffff80233e27\u003e \u003c-- in_lock_functions+0x9/0x24 \u003cffffffff8025a75d\u003e\n\n echo \"symonly\" \u003e /debugfs/tracing/iter_ctrl\n\ntracer:\n[ 81.479913] CPU 0: bash:3154 register_ftrace_function+0x5f/0x66 \u003c-- _spin_unlock_irqrestore+0xe/0x5a\n[ 81.479913] CPU 0: bash:3154 _spin_unlock_irqrestore+0x3e/0x5a \u003c-- sub_preempt_count+0xc/0x7a\n[ 81.479913] CPU 0: bash:3154 sub_preempt_count+0x30/0x7a \u003c-- in_lock_functions+0x9/0x24\n[ 81.479914] CPU 0: bash:3154 vfs_write+0x11d/0x155 \u003c-- dnotify_parent+0x12/0x78\n[ 81.479914] CPU 0: bash:3154 dnotify_parent+0x2d/0x78 \u003c-- _spin_lock+0xe/0x70\n[ 81.479914] CPU 0: bash:3154 _spin_lock+0x1b/0x70 \u003c-- add_preempt_count+0xe/0x77\n[ 81.479914] CPU 0: bash:3154 add_preempt_count+0x3e/0x77 \u003c-- in_lock_functions+0x9/0x24\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Arnaldo Carvalho de Melo \u003cacme@ghostprotocols.net\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "bc0c38d139ec7fcd5c030aea16b008f3732e42ac", "tree": "adaaf5e2ca49bbd7025bc357f87df9cb47641022", "parents": [ "16444a8a40d4c7b4f6de34af0cae1f76a4f6c901" ], "author": { "name": "Steven Rostedt", "email": "srostedt@redhat.com", "time": "Mon May 12 21:20:42 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:32:06 2008 +0200" }, "message": "ftrace: latency tracer infrastructure\n\nThis patch adds the latency tracer infrastructure. This patch\ndoes not add anything that will select and turn it on, but will\nbe used by later patches.\n\nIf it were to be compiled, it would add the following files\nto the debugfs:\n\n The root tracing directory:\n\n /debugfs/tracing/\n\nThis patch also adds the following files:\n\n available_tracers\n list of available tracers. Currently no tracers are\n available. Looking into this file only shows\n \"none\" which is used to unregister all tracers.\n\n current_tracer\n The trace that is currently active. Empty on start up.\n To switch to a tracer simply echo one of the tracers that\n are listed in available_tracers:\n\n example: (used with later patches)\n\n echo function \u003e /debugfs/tracing/current_tracer\n\n To disable the tracer:\n\n echo disable \u003e /debugfs/tracing/current_tracer\n\n tracing_enabled\n echoing \"1\" into this file starts the ftrace function tracing\n (if sysctl kernel.ftrace_enabled\u003d1)\n echoing \"0\" turns it off.\n\n latency_trace\n This file is readonly and holds the result of the trace.\n\n trace\n This file outputs a easier to read version of the trace.\n\n iter_ctrl\n Controls the way the output of traces look.\n So far there\u0027s two controls:\n echoing in \"symonly\" will only show the kallsyms variables\n without the addresses (if kallsyms was configured)\n echoing in \"verbose\" will change the output to show\n a lot more data, but not very easy to understand by\n humans.\n echoing in \"nosymonly\" turns off symonly.\n echoing in \"noverbose\" turns off verbose.\n\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Arnaldo Carvalho de Melo \u003cacme@ghostprotocols.net\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "16444a8a40d4c7b4f6de34af0cae1f76a4f6c901", "tree": "9c290bcdbdc1ecf8f578c30b3b36914e14fdaacc", "parents": [ "6e766410c4babd37bc7cd5e25009c179781742c8" ], "author": { "name": "Arnaldo Carvalho de Melo", "email": "acme@ghostprotocols.net", "time": "Mon May 12 21:20:42 2008 +0200" }, "committer": { "name": "Thomas Gleixner", "email": "tglx@linutronix.de", "time": "Fri May 23 20:31:58 2008 +0200" }, "message": "ftrace: add basic support for gcc profiler instrumentation\n\nIf CONFIG_FTRACE is selected and /proc/sys/kernel/ftrace_enabled is\nset to a non-zero value the ftrace routine will be called everytime\nwe enter a kernel function that is not marked with the \"notrace\"\nattribute.\n\nThe ftrace routine will then call a registered function if a function\nhappens to be registered.\n\n[ This code has been highly hacked by Steven Rostedt and Ingo Molnar,\n so don\u0027t blame Arnaldo for all of this ;-) ]\n\nUpdate:\n It is now possible to register more than one ftrace function.\n If only one ftrace function is registered, that will be the\n function that ftrace calls directly. If more than one function\n is registered, then ftrace will call a function that will loop\n through the functions to call.\n\nSigned-off-by: Arnaldo Carvalho de Melo \u003cacme@ghostprotocols.net\u003e\nSigned-off-by: Steven Rostedt \u003csrostedt@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" } ] }