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>

1 files changed, 1 insertions, 1 deletions

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 4c48be80dcdf..428a4a2ce350 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;