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authorIngo Molnar <mingo@elte.hu>2007-10-02 16:13:08 +0400
committerIngo Molnar <mingo@elte.hu>2007-10-02 16:13:08 +0400
commit30084fbd1caa4b2e1a336fcdef60b68129d1d8f8 (patch)
tree379ed73cbe0dc469ccacb148937594f39d35f46c /kernel
parent3146b39c185f8a436d430132457e84fa1d8f8208 (diff)
downloadlinux-30084fbd1caa4b2e1a336fcdef60b68129d1d8f8.tar.xz
sched: fix profile=sleep
fix sleep profiling - we lost this chunk in the CFS merge. Found-by: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/sched_fair.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index c9fbe8e73a45..67c67a87146e 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -639,6 +639,16 @@ static void enqueue_sleeper(struct cfs_rq *cfs_rq, struct sched_entity *se)
se->block_start = 0;
se->sum_sleep_runtime += delta;
+
+ /*
+ * Blocking time is in units of nanosecs, so shift by 20 to
+ * get a milliseconds-range estimation of the amount of
+ * time that the task spent sleeping:
+ */
+ if (unlikely(prof_on == SLEEP_PROFILING)) {
+ profile_hits(SLEEP_PROFILING, (void *)get_wchan(tsk),
+ delta >> 20);
+ }
}
#endif
}