[PATCH 4/4] events: sched_stat_template saves call chains of a target task

[Andrew Vagin]

It's more useful, because

sched:sched_stat_iowait:
Before we can see that block layer notifies that i/o request completed.
Now we can see which code wanted to read/write data.

sched:sched_stat_sleep:
Before we can see that delayed_work_timer_fn wakes up a task.
Now we see where a task sleeps.

Signed-off-by: Andrew Vagin <avagin@xxxxxxxxxx>
---
 include/trace/events/sched.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h
index f633478..7468c7a 100644
--- a/include/trace/events/sched.h
+++ b/include/trace/events/sched.h
@@ -296,6 +296,7 @@ DECLARE_EVENT_CLASS(sched_stat_template,
 		__entry->delay	= delay;
 	)
 	TP_perf_assign(
+		__perf_task(tsk);
 		__perf_count(delay);
 	),
 
-- 
1.7.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/