* [patch] sched_info_switch not being called according to documentation (10545)
@ 2008-04-29 9:08 David Simner
2008-04-29 9:51 ` Ingo Molnar
0 siblings, 1 reply; 2+ messages in thread
From: David Simner @ 2008-04-29 9:08 UTC (permalink / raw)
To: linux-kernel; +Cc: mingo
Hi,
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, see the patch
below:
David
--- linux-2.6.25-old/kernel/sched.c 2008-04-17 03:49:44.000000000 +0100
+++ linux-2.6.25/kernel/sched.c 2008-04-29 10:54:11.000000000 +0100
@@ -3944,9 +3944,9 @@
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;
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2008-04-29 9:08 [patch] sched_info_switch not being called according to documentation (10545) David Simner
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