From 30084fbd1caa4b2e1a336fcdef60b68129d1d8f8 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Tue, 2 Oct 2007 14:13:08 +0200
Subject: [PATCH] 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>
---
kernel/sched_fair.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index c9fbe8e73a4..67c67a87146 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
}
--
2.41.3