linux-kernel - [tip:perf/urgent] perf tools: Do not zero sample_id

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Message-ID: <tip-8e88c29b351ed4e09dd63f825f1c8260b0cb0ab3@git.kernel.org>
Date:   Tue, 6 Nov 2018 11:19:42 -0800
From:   tip-bot for Jiri Olsa <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, jolsa@...nel.org,
        andi@...stfloor.org, tglx@...utronix.de, peterz@...radead.org,
        hpa@...or.com, alexander.shishkin@...ux.intel.com,
        mingo@...nel.org, namhyung@...nel.org, acme@...hat.com
Subject: [tip:perf/urgent] perf tools: Do not zero sample_id_all for group
 members

Commit-ID:  8e88c29b351ed4e09dd63f825f1c8260b0cb0ab3
Gitweb:     https://git.kernel.org/tip/8e88c29b351ed4e09dd63f825f1c8260b0cb0ab3
Author:     Jiri Olsa <jolsa@...nel.org>
AuthorDate: Sun, 23 Sep 2018 17:04:20 +0200
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Tue, 6 Nov 2018 08:29:56 -0300

perf tools: Do not zero sample_id_all for group members

Andi reported following malfunction:

  # perf record -e '{ref-cycles,cycles}:S' -a sleep 1
  # perf script
  non matching sample_id_all

That's because we disable sample_id_all bit for non-sampling group
members. We can't do that, because it needs to be the same over the
whole event list. This patch keeps it untouched again.

Reported-by: Andi Kleen <andi@...stfloor.org>
Tested-by: Andi Kleen <andi@...stfloor.org>
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Link: http://lkml.kernel.org/r/20180923150420.27327-1-jolsa@kernel.org
Fixes: e9add8bac6c6 ("perf evsel: Disable write_backward for leader sampling group events")
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/tests/attr/test-record-group-sampling | 1 -
 tools/perf/util/evsel.c                          | 1 -
 2 files changed, 2 deletions(-)

diff --git a/tools/perf/tests/attr/test-record-group-sampling b/tools/perf/tests/attr/test-record-group-sampling
index 8a33ca4f9e1f..f0729c454f16 100644
--- a/tools/perf/tests/attr/test-record-group-sampling
+++ b/tools/perf/tests/attr/test-record-group-sampling
@@ -37,4 +37,3 @@ sample_freq=0
 sample_period=0
 freq=0
 write_backward=0
-sample_id_all=0
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 6d187059a373..d37bb1566cd9 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -956,7 +956,6 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts,
 		attr->sample_freq    = 0;
 		attr->sample_period  = 0;
 		attr->write_backward = 0;
-		attr->sample_id_all  = 0;
 	}
 
 	if (opts->no_samples)