perf config: Document 'top.children' variable in man page

Explain 'top.children' variable.

Signed-off-by: Taeung Song <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt
index f38f46f67d74c361a6e5f90783c2e38478533c23..5e1db5ae53c46960d52415dd784e86d8b9683346 100644 (file)
--- a/tools/perf/Documentation/perf-config.txt
+++ b/tools/perf/Documentation/perf-config.txt
@@ -405,6 +405,13 @@ report.*::
                     0.07%   0.00%  noploop  ld-2.15.so         [.] strcmp
                     0.03%   0.00%  noploop  [kernel.kallsyms]  [k] timerqueue_del
 
+top.*::
+       top.children::
+               Same as 'report.children'. So if it is enabled, the output of 'top'
+               command will have 'Children' overhead column as well as 'Self' overhead
+               column by default.
+               The default is 'true'.
+
 SEE ALSO
 --------
 linkperf:perf[1]