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Subject[PATCH] sched: fix the calculation of __sched_period in sched_slice()
Date
When we get the sched_slice of a sched_entity, we use cfs_rq->nr_running
to calculate the whole __sched_period. But cfs_rq->nr_running is the
number of sched_entity in that cfs_rq, rq->nr_running is the number
of all the tasks that are not throttled. So we should use the
rq->nr_running to calculate the whole __sched_period value.

Signed-off-by: Zhou Chengming <zhouchengming1@huawei.com>
---
kernel/sched/fair.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 0fe30e6..59c9378 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -625,7 +625,7 @@ static u64 __sched_period(unsigned long nr_running)
*/
static u64 sched_slice(struct cfs_rq *cfs_rq, struct sched_entity *se)
{
- u64 slice = __sched_period(cfs_rq->nr_running + !se->on_rq);
+ u64 slice = __sched_period(rq_of(cfs_rq)->nr_running + !se->on_rq);

for_each_sched_entity(se) {
struct load_weight *load;
--
1.7.7
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