sched: fix sched_info_switch not being called according to documentation

http://bugzilla.kernel.org/show_bug.cgi?id=10545

sched_stats.h says that __sched_info_switch is "called when prev !=
next" in the comment.  sched.c should therefore do that.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/sched.c b/kernel/sched.c
index bee9cbe13c1548aec429b298f41f448d3f3266c6..3ac3d7af04a186990bf3f849c51863e26fbb6cac 100644 (file)
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -4662,9 +4662,9 @@ need_resched_nonpreemptible:
        prev->sched_class->put_prev_task(rq, prev);
        next = pick_next_task(rq, prev);
 
-       sched_info_switch(prev, next);
-
        if (likely(prev != next)) {
+               sched_info_switch(prev, next);
+
                rq->nr_switches++;
                rq->curr = next;
                ++*switch_count;