lkml.org 
[lkml]   [2017]   [Jul]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[tip:perf/core] perf annotate: Do not overwrite perf_sample->weight
Commit-ID:  c6c13be76c1fc8a3169dbd29cd1d42af1d64773f
Gitweb: http://git.kernel.org/tip/c6c13be76c1fc8a3169dbd29cd1d42af1d64773f
Author: Arnaldo Carvalho de Melo <acme@redhat.com>
AuthorDate: Wed, 26 Jul 2017 16:52:25 -0300
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Wed, 26 Jul 2017 16:52:25 -0300

perf annotate: Do not overwrite perf_sample->weight

When we parse an event we may get a value from the kernel in response to
PERF_SAMPLE_WEIGHT being set in perf_event_attr->sample_type, and if it
is not set, then perf_sample->weight will be set to zero, which should
be ok according to a discussion with Andi Kleen [1]:

1: https://lkml.kernel.org/r/20170724174637.GS3044@two.firstfloor.org

Acked-by: Andi Kleen <andi@firstfloor.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Taeung Song <treeze.taeung@gmail.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-8ev8ufk3lzmvgz37yg9nv3qz@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/builtin-annotate.c | 2 --
1 file changed, 2 deletions(-)

diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 6db782d..658c920 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -177,8 +177,6 @@ static int perf_evsel__add_sample(struct perf_evsel *evsel,
*/
process_branch_stack(sample->branch_stack, al, sample);

- sample->weight = 1;
-
he = hists__add_entry(hists, al, NULL, NULL, NULL, sample, true);
if (he == NULL)
return -ENOMEM;
\
 
 \ /
  Last update: 2017-07-30 11:42    [W:0.039 / U:0.192 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site