linux-kernel - [tip:perf/urgent] perf script: Improve man page description of metrics

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Message-ID: <tip-7db7218a7ea577f04c2df92453d47ab5ebfc8863@git.kernel.org>
Date:   Tue, 23 Jul 2019 14:47:03 -0700
From:   tip-bot for Andi Kleen <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     tglx@...utronix.de, acme@...hat.com, mingo@...nel.org,
        linux-kernel@...r.kernel.org, jolsa@...nel.org, hpa@...or.com,
        ak@...ux.intel.com
Subject: [tip:perf/urgent] perf script: Improve man page description of
 metrics

Commit-ID:  7db7218a7ea577f04c2df92453d47ab5ebfc8863
Gitweb:     https://git.kernel.org/tip/7db7218a7ea577f04c2df92453d47ab5ebfc8863
Author:     Andi Kleen <ak@...ux.intel.com>
AuthorDate: Thu, 11 Jul 2019 11:19:22 -0700
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Tue, 23 Jul 2019 08:58:11 -0300

perf script: Improve man page description of metrics

Clarify that a metric is based on events, not referring to itself. Also
some improvements with the sentences.

Signed-off-by: Andi Kleen <ak@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Link: http://lkml.kernel.org/r/20190711181922.18765-3-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/Documentation/perf-script.txt | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index 042b9e5dcc32..caaab28f8400 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -228,11 +228,11 @@ OPTIONS
 
 	With the metric option perf script can compute metrics for
 	sampling periods, similar to perf stat. This requires
-	specifying a group with multiple metrics with the :S option
+	specifying a group with multiple events defining metrics with the :S option
 	for perf record. perf will sample on the first event, and
-	compute metrics for all the events in the group. Please note
+	print computed metrics for all the events in the group. Please note
 	that the metric computed is averaged over the whole sampling
-	period, not just for the sample point.
+	period (since the last sample), not just for the sample point.
 
 	For sample events it's possible to display misc field with -F +misc option,
 	following letters are displayed for each bit: