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sched/eevdf: Align update_protect_slice to set_protect_slice

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Apply the same logic as for set_protect_slice when updating it.

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260921152238.3804392-3-vincent.guittot@linaro.org
This commit is contained in:
Vincent Guittot 2026-09-21 17:22:32 +02:00 committed by Peter Zijlstra
parent aae2a33ea6
commit 4bf32ec332
1 changed files with 11 additions and 8 deletions
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19
kernel/sched/fair.c
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@ -821,12 +821,6 @@ static u64 ineligible_vruntime(struct cfs_rq *cfs_rq)
if (curr && !curr->on_rq)
curr = NULL;
/*
* This is called from set_next_task_fair(.first=true) /
* set_protect_slice() so curr had better be set and on_rq.
*/
WARN_ON_ONCE(!curr);
if (weight) {
s64 runtime = cfs_rq->sum_w_vruntime;
@ -1138,10 +1132,19 @@ static inline void set_protect_slice(struct cfs_rq *cfs_rq, struct sched_entity
static inline void update_protect_slice(struct cfs_rq *cfs_rq, struct sched_entity *se)
{
u64 slice = cfs_rq_min_slice(cfs_rq);
u64 vruntime = min_vruntime(se->vruntime, avg_vruntime(cfs_rq));
u64 slice = normalized_sysctl_sched_base_slice;
u64 vprot;
se->vprot = min_vruntime(se->vprot, vruntime + calc_delta_fair(slice, se));
if (sched_feat(RUN_TO_PARITY))
slice = cfs_rq_min_slice(cfs_rq);
vprot = min_vruntime(se->vprot, vruntime + calc_delta_fair(slice, se));
if (sched_feat(PREEMPT_SHORT) && slice != se->slice)
vprot = min_vruntime(vprot, ineligible_vruntime(cfs_rq));
se->vprot = vprot;
}
static inline bool protect_slice(struct sched_entity *se)