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| author | Adrian Hunter <adrian.hunter@intel.com> | 2015-04-24 22:29:45 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-05-04 18:43:50 +0300 |
| commit | 520a2ebc2f0bd46b65feb7ca73a9ed65ea1a36bd (patch) | |
| tree | a2fe714afdce647f1642bb5fe82752d98876c5e7 /tools/perf/Documentation/perf-report.txt | |
| parent | 6d5cdd64f314e03c8606c777dc44b09769f8e038 (diff) | |
| download | linux-520a2ebc2f0bd46b65feb7ca73a9ed65ea1a36bd.tar.xz | |
perf report: 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/1429903807-20559-4-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/perf-report.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-report.txt | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index 896672badba3..b66f6b41b179 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -327,6 +327,33 @@ OPTIONS include::callchain-overhead-calculation.txt[] +--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-stat[1], linkperf:perf-annotate[1] |