linux-kernel - [PATCH v2 1/7] perf tools: Continue processing header on unknown features

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Message-ID: <1323248577-11268-2-git-send-email-robert.richter@amd.com>
Date:	Wed, 7 Dec 2011 10:02:51 +0100
From:	Robert Richter <robert.richter@....com>
To:	Arnaldo Carvalho de Melo <acme@...hat.com>
CC:	Ingo Molnar <mingo@...e.hu>, Peter Zijlstra <peterz@...radead.org>,
	Stephane Eranian <eranian@...gle.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Robert Richter <robert.richter@....com>
Subject: [PATCH v2 1/7] perf tools: Continue processing header on unknown features

A feature may be unknown if perf.data is created and parsed on
different perf tool versions. This should not stop the header to be
processed, instead continue processing it.

Signed-off-by: Robert Richter <robert.richter@....com>
---
 tools/perf/util/header.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 9272f3a..47a7826 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -1105,7 +1105,7 @@ static int perf_file_section__fprintf_info(struct perf_file_section *section,
 	}
 	if (feat < HEADER_TRACE_INFO || feat >= HEADER_LAST_FEATURE) {
 		pr_warning("unknown feature %d\n", feat);
-		return -1;
+		return 0;
 	}
 	if (!feat_ops[feat].print)
 		return 0;
-- 
1.7.7


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