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Date:	Fri,  7 Feb 2014 10:35:22 +0900
From:	Namhyung Kim <>
To:	Arnaldo Carvalho de Melo <>
Cc:	Peter Zijlstra <>,
	Ingo Molnar <>,
	Paul Mackerras <>,
	Namhyung Kim <>,
	LKML <>,
	Arun Sharma <>,
	Frederic Weisbecker <>,
	Rodrigo Campos <>,
	Andi Kleen <>,
	David Ahern <>
Subject: [PATCH 20/21] perf top: Add top.children config option

Add top.children config option for setting default value of
callchain accumulation.  It affects the output only if one of
-g or --call-graph option is given as well.

A user can write .perfconfig file like below to enable accumulation
by default:

  $ cat ~/.perfconfig
  children = true

And it can be disabled through command line:

  $ perf top --no-children

Tested-by: Arun Sharma <>
Cc: Frederic Weisbecker <>
Signed-off-by: Namhyung Kim <>
 tools/perf/builtin-top.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 2a0bc3a8e634..259c34e9914f 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1005,6 +1005,10 @@ static int perf_top_config(const char *var, const char *value, void *cb)
 	if (!strcmp(var, ""))
 		return record_parse_callchain(value, &top->record_opts);
+	if (!strcmp(var, "top.children")) {
+		symbol_conf.cumulate_callchain = perf_config_bool(var, value);
+		return 0;
+	}
 	return perf_default_config(var, value, cb);

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