[tip:perf/core] perf tools: Continue processing header on unknown features

[tip-bot for Robert Richter <robert.richter@amd.com>]

Commit-ID:  f7a8a1336416883dc0ccd96c17c604e34de61c25
Gitweb:     http://git.kernel.org/tip/f7a8a1336416883dc0ccd96c17c604e34de61c25
Author:     Robert Richter <robert.richter@amd.com>
AuthorDate: Wed, 7 Dec 2011 10:02:51 +0100
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Fri, 23 Dec 2011 16:57:09 -0200

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.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1323248577-11268-2-git-send-email-robert.richter@amd.com
Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.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 4c48be8..428a4a2 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -1109,7 +1109,7 @@ 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;