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| author | Namhyung Kim <namhyung@kernel.org> | 2015-04-22 15:33:45 +0900 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-04-29 10:38:06 -0300 |
| commit | dd3092075c3263fca7a3e98b143ad2296aab71b4 (patch) | |
| tree | e39aa333251c8bd2b93c9de9c45bbd3e33f1ad34 /tools/perf/Documentation/perf-report.txt | |
| parent | c4fa0d9c1e6aa360cfa2c36f7836a89da24a1b7a (diff) | |
perf tools: Document --children option in more detail
As the --children option changes the output of perf report (and perf
top) it sometimes confuses users. Add more words and examples to help
understanding of the option's behavior - and how to disable it ;-).
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Taeung Song <treeze.taeung@gmail.com>
Link: http://lkml.kernel.org/r/1429684425-14987-1-git-send-email-namhyung@kernel.org
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 | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index 4879cf638824..896672badba3 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -193,6 +193,7 @@ OPTIONS Accumulate callchain of children to parent entry so that then can show up in the output. The output will have a new "Children" column and will be sorted on the data. It requires callchains are recorded. + See the `overhead calculation' section for more details. --max-stack:: Set the stack depth limit when parsing the callchain, anything @@ -323,6 +324,9 @@ OPTIONS --header-only:: Show only perf.data header (forces --stdio). + +include::callchain-overhead-calculation.txt[] + SEE ALSO -------- linkperf:perf-stat[1], linkperf:perf-annotate[1] |