diff mbox series

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

Message ID 1513273620-3351-1-git-send-email-mathieu.poirier@linaro.org
State Superseded
Headers show
Series [v2] perf report: Fix regression when decoding intelPT traces | expand

Commit Message

Mathieu Poirier Dec. 14, 2017, 5:47 p.m. UTC
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.poirier@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(-)

-- 
2.7.4

Comments

Jiri Olsa Dec. 18, 2017, 3:22 a.m. UTC | #1
On Thu, Dec 14, 2017 at 10:47:00AM -0700, Mathieu Poirier wrote:
> 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.poirier@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

> 


Acked-by: Jiri Olsa <jolsa@kernel.org>


thanks,
jirka
diff mbox series

Patch

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);