linux-kernel - [tip:perf/core] perf script: Check output fields only for samples

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Date:	Tue, 20 Oct 2015 00:49:58 -0700
From:	tip-bot for Jiri Olsa <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	jolsa@...nel.org, linux-kernel@...r.kernel.org,
	a.p.zijlstra@...llo.nl, tglx@...utronix.de, acme@...hat.com,
	kan.liang@...el.com, dsahern@...il.com, hpa@...or.com,
	namhyung@...nel.org, mingo@...nel.org
Subject: [tip:perf/core] perf script: Check output fields only for samples

Commit-ID:  d2b5a315ae84d235f00761468885c466f81d7805
Gitweb:     http://git.kernel.org/tip/d2b5a315ae84d235f00761468885c466f81d7805
Author:     Jiri Olsa <jolsa@...nel.org>
AuthorDate: Fri, 16 Oct 2015 12:41:25 +0200
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Mon, 19 Oct 2015 18:05:59 -0300

perf script: Check output fields only for samples

There's no need to check sampling output fields for events without
perf_event_attr::sample_type field set.

Signed-off-by: Jiri Olsa <jolsa@...nel.org>
Tested-by: Kan Liang <kan.liang@...el.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/r/1444992092-17897-51-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/builtin-script.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 8ce1c6b..2653c02 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -686,7 +686,10 @@ static int process_attr(struct perf_tool *tool, union perf_event *event,
 
 	set_print_ip_opts(&evsel->attr);
 
-	return perf_evsel__check_attr(evsel, scr->session);
+	if (evsel->attr.sample_type)
+		err = perf_evsel__check_attr(evsel, scr->session);
+
+	return err;
 }
 
 static int process_comm_event(struct perf_tool *tool,
--
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