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authorStanislav Fomichev <stfomichev@yandex-team.ru>2013-11-01 20:25:51 +0400
committerArnaldo Carvalho de Melo <acme@redhat.com>2013-11-27 14:58:37 -0300
commit6f8d67fa0c6bdca535ecab137c44b095023cc1b4 (patch)
tree4c624985d3666affdb2800eb0ca59384fbd9be6d /tools/perf/Documentation/perf-timechart.txt
parent367b3152d72c20d789b07650bd1189ce0fe266b8 (diff)
downloadlinux-6f8d67fa0c6bdca535ecab137c44b095023cc1b4.tar.gz
perf timechart: Add backtrace support
Add -g flag to `perf timechart record` which saves callchain info in the perf.data. When generating SVG, add backtrace information to the figure details, so now it's possible to see which code path woke up the task and why some task went to sleep. Signed-off-by: Stanislav Fomichev <stfomichev@yandex-team.ru> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1383323151-19810-8-git-send-email-stfomichev@yandex-team.ru Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation/perf-timechart.txt')
-rw-r--r--tools/perf/Documentation/perf-timechart.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-timechart.txt b/tools/perf/Documentation/perf-timechart.txt
index 8359cfadf0ac..271dd4ed5b05 100644
--- a/tools/perf/Documentation/perf-timechart.txt
+++ b/tools/perf/Documentation/perf-timechart.txt
@@ -68,6 +68,9 @@ RECORD OPTIONS
-T::
--tasks-only::
Record only tasks-related events
+-g::
+--callchain::
+ Do call-graph (stack chain/backtrace) recording
SEE ALSO
--------