linux-kernel - [PATCH] perf report: Document '--call-graph' better for usage

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Date:	Sat,  8 May 2010 18:33:03 +0300
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	mingo@...e.hu
Cc:	linux-kernel@...r.kernel.org,
	Pekka Enberg <penberg@...helsinki.fi>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Frédéric Weisbecker <fweisbec@...il.com>,
	Mike Galbraith <efault@....de>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: [PATCH] perf report: Document '--call-graph' better for usage

This patch improves 'perf report -h' output for the '--call-graph' command line
option by enumerating the different output types.

Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Frédéric Weisbecker <fweisbec@...il.com>
Cc: Mike Galbraith <efault@....de>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Signed-off-by: Pekka Enberg <penberg@...helsinki.fi>
---
 tools/perf/builtin-report.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index f815de2..695a15e 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -424,7 +424,7 @@ static const struct option options[] = {
 	OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
 		    "Only display entries with parent-match"),
 	OPT_CALLBACK_DEFAULT('g', "call-graph", NULL, "output_type,min_percent",
-		     "Display callchains using output_type and min percent threshold. "
+		     "Display callchains using output_type (graph, flat, fractal, or none) and min percent threshold. "
 		     "Default: fractal,0.5", &parse_callchain_opt, callchain_default_opt),
 	OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
 		   "only consider symbols in these dsos"),
-- 
1.6.3.3

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