linux-kernel - [tip:perf/urgent] perf timechart: Fix wrong SVG height

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Date:	Thu, 23 Jan 2014 09:03:26 -0800
From:	tip-bot for Stanislav Fomichev <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	acme@...hat.com, linux-kernel@...r.kernel.org, paulus@...ba.org,
	mingo@...hat.com, hpa@...or.com, mingo@...nel.org,
	a.p.zijlstra@...llo.nl, namhyung@...nel.org, jolsa@...hat.com,
	stfomichev@...dex-team.ru, adrian.hunter@...el.com,
	dsahern@...il.com, tglx@...utronix.de
Subject: [tip:perf/urgent] perf timechart: Fix wrong SVG height

Commit-ID:  3415d8b851307c75a1e8aa16030db9172306df78
Gitweb:     http://git.kernel.org/tip/3415d8b851307c75a1e8aa16030db9172306df78
Author:     Stanislav Fomichev <stfomichev@...dex-team.ru>
AuthorDate: Mon, 20 Jan 2014 15:39:38 +0400
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Mon, 20 Jan 2014 16:19:08 -0300

perf timechart: Fix wrong SVG height

If we call perf timechart with -p 0 arguments, it means we don't want
any tasks related data. It works, but space for tasks data is reserved
in the generated SVG. Remove this unused empty space via passing 0 as
count to the open_svg.

Signed-off-by: Stanislav Fomichev <stfomichev@...dex-team.ru>
Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/r/1390217980-22424-2-git-send-email-stfomichev@yandex-team.ru
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/builtin-timechart.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
index 652af0b..25526d6 100644
--- a/tools/perf/builtin-timechart.c
+++ b/tools/perf/builtin-timechart.c
@@ -1045,6 +1045,9 @@ static void write_svg_file(struct timechart *tchart, const char *filename)
 		thresh /= 10;
 	} while (!process_filter && thresh && count < tchart->proc_num);
 
+	if (!tchart->proc_num)
+		count = 0;
+
 	open_svg(filename, tchart->numcpus, count, tchart->first_time, tchart->last_time);
 
 	svg_time_grid();
--
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