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Subject[PATCH] sched/fair: eliminate redundant code in sched_slice()
Since sched_slice() is used in high frequency,
small change should also make sense.

Signed-off-by: Peng Liu <iwtbavbm@gmail.com>
---
kernel/sched/fair.c | 11 ++++-------
1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 1054d2cf6aaa..6ae2a507aac0 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -694,19 +694,16 @@ static u64 sched_slice(struct cfs_rq *cfs_rq, struct sched_entity *se)
u64 slice = __sched_period(cfs_rq->nr_running + !se->on_rq);

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

cfs_rq = cfs_rq_of(se);
- load = &cfs_rq->load;
+ lw = cfs_rq->load;

- if (unlikely(!se->on_rq)) {
+ if (unlikely(!se->on_rq))
lw = cfs_rq->load;

- update_load_add(&lw, se->load.weight);
- load = &lw;
- }
- slice = __calc_delta(slice, se->load.weight, load);
+ update_load_add(&lw, se->load.weight);
+ slice = __calc_delta(slice, se->load.weight, &lw);
}
return slice;
}
--
2.17.1
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