* [PATCH] sched/fair: use user weight to calculate util_avg in post_init_entity_util_avg()
@ 2016-12-08 1:27 T.Zhou
0 siblings, 0 replies; only message in thread
From: T.Zhou @ 2016-12-08 1:27 UTC (permalink / raw)
To: peterz; +Cc: linux-kernel, mingo
To calculate util_avg, se's weight should have the
same resolution as cfs->avg.load_avg. So use user
weight instead.
Signed-off-by: T.Zhou <t1zhou@163.com>
---
kernel/sched/fair.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 18d9e75..9799438 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -792,7 +792,8 @@ void post_init_entity_util_avg(struct sched_entity *se)
if (cap > 0) {
if (cfs_rq->avg.util_avg != 0) {
- sa->util_avg = cfs_rq->avg.util_avg * se->load.weight;
+ sa->util_avg = cfs_rq->avg.util_avg *
+ scale_load_down(se->load.weight);
sa->util_avg /= (cfs_rq->avg.load_avg + 1);
if (sa->util_avg > cap)
--
2.7.3
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2016-12-08 1:27 [PATCH] sched/fair: use user weight to calculate util_avg in post_init_entity_util_avg() T.Zhou
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