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| author | Adrian Hunter <adrian.hunter@intel.com> | 2015-04-09 18:53:56 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-04-29 10:37:56 -0300 |
| commit | 7a680eb990b6646ecadf22dca7ded16a33f731b9 (patch) | |
| tree | 3ea64c55f1d373436f93ac8311c4597ccfdc5e33 /tools/perf/Documentation | |
| parent | cfe9174fcfe28f0f73dce422e3151991ee0d49bf (diff) | |
| download | op-kernel-dev-7a680eb990b6646ecadf22dca7ded16a33f731b9.zip op-kernel-dev-7a680eb990b6646ecadf22dca7ded16a33f731b9.tar.gz | |
perf script: Add Instruction Tracing support
Add support for decoding an AUX area assuming it contains instruction
tracing data.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1428594864-29309-17-git-send-email-adrian.hunter@intel.com
[ Do not use -Z as an alternative to --itrace ]
[ Fixed initialization of itrace_synth_opts struct fields on older gcc versions ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation')
| -rw-r--r-- | tools/perf/Documentation/perf-script.txt | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt index 7944575..05df648 100644 --- a/tools/perf/Documentation/perf-script.txt +++ b/tools/perf/Documentation/perf-script.txt @@ -221,6 +221,33 @@ OPTIONS --header-only Show only perf.data header. +--itrace:: + Options for decoding instruction tracing data. The options are: + + i synthesize instructions events + b synthesize branches events + c synthesize branches events (calls only) + r synthesize branches events (returns only) + e synthesize error events + d create a debug log + g synthesize a call chain for instructions events + + The default is all events i.e. the same as --itrace=ibe + + In addition, the period (default 100000) for instructions events + can be specified in units of: + + i instructions + t ticks + ms milliseconds + us microseconds + ns nanoseconds (default) + + Also the call chain size (default 16, max. 1024) for instructions + events can be specified. + + To disable decoding entirely, use --no-itrace. + SEE ALSO -------- linkperf:perf-record[1], linkperf:perf-script-perl[1], |
