From: Byungchul Park <byungchul.p...@lge.com>
__sched_period() returns a period which a rq can have. the period has to be
stretched by the number of task *the rq has*, when nr_running > nr_latency.
otherwise, task slice can be very smaller than sysctl_sched_min_granularity
depending on the position of tg hierarchy when CONFIG_FAIR_GROUP_SCHED.
Signed-off-by: Byungchul Park <byungchul.p...@lge.com>
---
kernel/sched/fair.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 09456fc..1adacb8 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -635,7 +635,7 @@ 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)->cfs.nr_running + !se->on_rq);
for_each_sched_entity(se) {
struct load_weight *load;
--
1.7.9.5
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