Messages in this thread Patch in this message | | | From | byungchul.park@lge ... | Subject | [PATCH v2] sched: let __sched_period() use rq's nr_running | Date | Fri, 10 Jul 2015 17:11:30 +0900 |
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From: Byungchul Park <byungchul.park@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.park@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..8ae7aeb 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)->nr_running + !se->on_rq); for_each_sched_entity(se) { struct load_weight *load; -- 1.7.9.5
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