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| author | Adrian Hunter <adrian.hunter@intel.com> | 2015-04-09 17:54:00 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-04-29 15:37:57 +0200 |
| commit | 0f0aa5e0693ce4000a7657cc47ce4f32b86b91ba (patch) | |
| tree | 306c85337ffc7a4f75f41040ecc16bc84cff3344 /tools/perf/Documentation | |
| parent | perf inject: Re-pipe AUX area tracing events (diff) | |
| download | linux-0f0aa5e0693ce4000a7657cc47ce4f32b86b91ba.tar.xz linux-0f0aa5e0693ce4000a7657cc47ce4f32b86b91ba.zip | |
perf inject: Add Instruction Tracing support
Add support for decoding an AUX area assuming it contains instruction
tracing data. The AUX area tracing events are stripped and replaced by
synthesized events.
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/1428594864-29309-21-git-send-email-adrian.hunter@intel.com
[ Do not use -Z as an alternative to --itrace ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation')
| -rw-r--r-- | tools/perf/Documentation/perf-inject.txt | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-inject.txt b/tools/perf/Documentation/perf-inject.txt index dc7442cf3d7f..bb1f655e1361 100644 --- a/tools/perf/Documentation/perf-inject.txt +++ b/tools/perf/Documentation/perf-inject.txt @@ -44,6 +44,32 @@ OPTIONS --kallsyms=<file>:: kallsyms pathname +--itrace:: + Decode Instruction Tracing data, replacing it with synthesized events. + 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. + SEE ALSO -------- linkperf:perf-record[1], linkperf:perf-report[1], linkperf:perf-archive[1] |