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authorAdrian Hunter <adrian.hunter@intel.com>2015-04-09 18:54:00 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2015-04-29 10:37:57 -0300
commit0f0aa5e0693ce4000a7657cc47ce4f32b86b91ba (patch)
tree306c85337ffc7a4f75f41040ecc16bc84cff3344 /tools/perf/Documentation/perf-inject.txt
parentcd17a9b54463970a47fec33d94f220950c9990c4 (diff)
downloadlinux-0f0aa5e0693ce4000a7657cc47ce4f32b86b91ba.tar.gz
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/perf-inject.txt')
-rw-r--r--tools/perf/Documentation/perf-inject.txt26
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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]