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From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org, Jiri Olsa <jolsa@kernel.org>,
	David Ahern <dsahern@gmail.com>,
	Namhyung Kim <namhyung@kernel.org>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	stable@vger.kernel.org, #@infradead.org, v4.2+@infradead.org,
	Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: [PATCH 06/16] perf stat: Do not clean event's private stats
Date: Thu, 21 Jan 2016 13:00:39 -0300	[thread overview]
Message-ID: <1453392049-5825-7-git-send-email-acme@kernel.org> (raw)
In-Reply-To: <1453392049-5825-1-git-send-email-acme@kernel.org>

From: Jiri Olsa <jolsa@kernel.org>

Mel reported stddev reporting was broken due to following commit:

	106a94a0f8c2 ("perf stat: Introduce read_counters function")

This commit merged interval and overall counters reading into single
read_counters function.

The old interval code cleaned the stddev data for some reason (it's
never displayed in interval mode) and the mentioned commit kept on
cleaning the stddev data in merged function, which resulted in the
stddev not being displayed.

Removing the wrong stddev data cleanup init_stats call.

Reported-and-Tested-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: stable@vger.kernel.org # v4.2+
Fixes: 106a94a0f8c2 ("perf stat: Introduce read_counters function")
Link: http://lkml.kernel.org/r/1453290995-18485-4-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/stat.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c
index 2f901d15e063..2b58edccd56f 100644
--- a/tools/perf/util/stat.c
+++ b/tools/perf/util/stat.c
@@ -310,7 +310,6 @@ int perf_stat_process_counter(struct perf_stat_config *config,
 	int i, ret;
 
 	aggr->val = aggr->ena = aggr->run = 0;
-	init_stats(ps->res_stats);
 
 	if (counter->per_pkg)
 		zero_per_pkg(counter);
-- 
2.5.0

  parent reply	other threads:[~2016-01-21 16:06 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-01-21 16:00 [GIT PULL 00/16] perf/core improvements and changes Arnaldo Carvalho de Melo
2016-01-21 16:00 ` [PATCH 01/16] perf tests: Remove wrong semicolon in while loop in CQM test Arnaldo Carvalho de Melo
2016-01-21 16:00 ` [PATCH 02/16] perf annotate browser: Fix behaviour of Shift-Tab with nothing focussed Arnaldo Carvalho de Melo
2016-01-21 16:00 ` [PATCH 03/16] perf pmu: Fix misleadingly indented assignment (whitespace) Arnaldo Carvalho de Melo
2016-01-21 16:00 ` [PATCH 04/16] perf symbols: Do not read symbols/data from device files Arnaldo Carvalho de Melo
2016-01-21 16:00 ` [PATCH 05/16] perf hists: Fix HISTC_MEM_DCACHELINE width setting Arnaldo Carvalho de Melo
2016-01-21 16:00 ` Arnaldo Carvalho de Melo [this message]
2016-01-21 16:00 ` [PATCH 07/16] perf stat: Making several helper functions static Arnaldo Carvalho de Melo
2016-01-21 16:00 ` [PATCH 08/16] perf hists: Remove parent filter check in DSO filter function Arnaldo Carvalho de Melo
2016-01-21 16:00 ` [PATCH 09/16] perf hists: Cleanup filtering functions Arnaldo Carvalho de Melo
2016-01-21 16:00 ` [PATCH 10/16] perf tools: Document the perf sysctls Arnaldo Carvalho de Melo
2016-01-21 16:00 ` [PATCH 11/16] perf annotate: Rename 'colors.code' to 'colors.jump_arrows' Arnaldo Carvalho de Melo
2016-01-21 16:00 ` [PATCH 12/16] perf config: Document variables for 'colors' section in man page Arnaldo Carvalho de Melo
2016-01-21 16:00 ` [PATCH 13/16] perf config: Document variables for 'tui' and 'gtk' sections " Arnaldo Carvalho de Melo
2016-01-21 16:00 ` [PATCH 14/16] perf config: Document 'buildid.dir' variable " Arnaldo Carvalho de Melo
2016-01-21 16:00 ` [PATCH 15/16] perf config: Document variables for 'annotate' section " Arnaldo Carvalho de Melo
2016-01-21 16:00 ` [PATCH 16/16] perf config: Document 'hist.percentage' variable " Arnaldo Carvalho de Melo
2016-02-03 10:00 ` [GIT PULL 00/16] perf/core improvements and changes Ingo Molnar

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