linux/tools/perf/tests/code-reading.c, branch v3.14

perf evlist: Auto unmap on destructor

2014-01-13T13:06:22Z

Removing further boilerplate after making sure perf_evlist__munmap can be called multiple times for the same evlist. Cc: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-o0luenuld4abupm4nmrgzm6f@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf evlist: Close fds on destructor

2014-01-13T13:06:22Z

Since it is safe to call perf_evlist__close() multiple times, autoclose it and remove the calls to the close from existing tools, reducing the tooling boilerplate. Cc: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-2kq9v7p1rude1tqxa0aue2tk@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf evlist: Move destruction of maps to evlist destructor

2014-01-13T13:06:21Z

Instead of requiring tools to do an extra destructor call just before calling perf_evlist__delete. Cc: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-0jd2ptzyikxb5wp7inzz2ah2@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Rename 'perf_record_opts' to 'record_opts

2013-12-19T17:43:45Z

Reduce typing, functions use class__method convention, so unlikely to clash with other libraries. This actually was discussed in the "Link:" referenced message below. Cc: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/20131112113427.GA4053@ghostprotocols.net Signed-off-by: Arnaldo Carvalho de Melo

perf tests: Handle throttle events in 'object code reading' test

2013-11-12T19:37:54Z

Unhandled events cause an error that fails the test, fix it. Reported-by: Arnaldo Carvalho de Melo Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/5281DFE5.3000909@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf record: Synthesize non-exec MMAP records when --data used

2013-11-11T18:56:39Z

When perf_event_attr.mmap_data is set the kernel will generate PERF_RECORD_MMAP events when non-exec (data, SysV mem) mmaps are created, so we need to synthesize from /proc/pid/maps for existing threads, as we do for exec mmaps. Right now just 'perf record' does it, but any other tool that uses perf_event__synthesize_thread(s|map) can request it. Reported-by: Don Zickus Tested-by: Don Zickus Cc: Adrian Hunter Cc: Bill Gray Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Joe Mario Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Richard Fowles Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-ihwzraikx23ian9txinogvv2@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add time argument on COMM setting

2013-11-04T14:57:06Z

This way we can later delimit a lifecycle for the COMM and map a hist to a precise COMM:timeslice couple. PERF_RECORD_COMM and PERF_RECORD_FORK events that don't have PERF_SAMPLE_TIME samples can only send 0 value as a timestamp and thus should overwrite any previous COMM on a given thread because there is no sensible way to keep track of all the comms lifecycles in a thread without time informations. Signed-off-by: Frederic Weisbecker Tested-by: Jiri Olsa Cc: Jiri Olsa Cc: David Ahern Cc: Ingo Molnar Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-6tyow99vgmmtt9qwr2u2lqd7@git.kernel.org [ Made it cope with PERF_RECORD_MMAP2 ] Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Fixup mmap event consumption

2013-10-28T19:06:00Z

The tail position of the event buffer should only be modified after actually use that event. If not the event buffer could be invalid before use, and segment fault occurs when invoking perf top -G. Signed-off-by: Zhouyi Zhou Cc: David Ahern Cc: Zhouyi Zhou Link: http://lkml.kernel.org/r/1382600613-32177-1-git-send-email-zhouzhouyi@gmail.com [ Simplified the logic using exit gotos and renamed write_tail method to mmap_consume ] Signed-off-by: Arnaldo Carvalho de Melo

perf tools: change machine__findnew_thread() to set thread pid

2013-08-29T14:51:31Z

Add a new parameter for 'pid' to machine__findnew_thread(). Change callers to pass 'pid' when it is known. Note that callers sometimes want to find the main thread which has the memory maps. The main thread has tid == pid so the usage in that case is: machine__findnew_thread(machine, pid, pid) whereas the usage to find the specific thread is: machine__findnew_thread(machine, pid, tid) Signed-off-by: Adrian Hunter Acked-by: David Ahern Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1377591794-30553-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo

perf tests: Fix compile failure on do_sort_something

2013-08-14T14:42:45Z

Commit b55ae0a9 added code-reading.c which fails to compile on Fedora 16 with compiler version: $ gcc --version gcc (GCC) 4.6.3 20120306 (Red Hat 4.6.3-2) Failure message is: tests/code-reading.c: In function ‘do_sort_something’: tests/code-reading.c:305:13: error: stack protector not protecting local variables: variable length buffer [-Werror=stack-protector] cc1: all warnings being treated as errors make: *** [/tmp/junk/tests/code-reading.o] Error 1 make: *** Waiting for unfinished jobs.... v2: as Adrian noticed changed sizeof to ARRAY_SIZE Signed-off-by: David Ahern Acked-by: Adrian Hunter Cc: Adrian Hunter Cc: Jiri Olsa Link: http://lkml.kernel.org/r/1376454732-83728-1-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo