[PATCH v2] perf report: Fix regression when decoding intelPT traces

[Mathieu Poirier]

Commit (93d10af26bb7 perf tools: Optimize sample parsing for ordered
events) breaks intelPT trace decoding by invariably returning an error if
the event type isn't a PERF_SAMPLE_TIME.

With this patch the timestamp is initialised and processing is allowed to
continue if the error returned by function
perf_evlist__parse_sample_timestamp() is not a fault.

Signed-off-by: Mathieu Poirier <mathieu.poir...@linaro.org>
---
Change for v2:
- Better handling of error conditions as suggested by Jiri.
- Slight modification of the changelog to reflect the above.
---
 tools/perf/util/session.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 54e30f1bcbd7..eb59dc7c7314 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1508,10 +1508,10 @@ static s64 perf_session__process_event(struct 
perf_session *session,
                return perf_session__process_user_event(session, event, 
file_offset);
 
        if (tool->ordered_events) {
-               u64 timestamp;
+               u64 timestamp = -1ULL;
 
                ret = perf_evlist__parse_sample_timestamp(evlist, event, 
&timestamp);
-               if (ret)
+               if (ret != -1)
                        return ret;
 
                ret = perf_session__queue_event(session, event, timestamp, 
file_offset);
-- 
2.7.4