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sched/fair: Update min_vruntime for reweight_entity() correctly
Since reweight_entity() may have chance to change the weight of
cfs_rq->curr entity, we should also update_min_vruntime() if
this is the case
Fixes: eab03c23c2
("sched/eevdf: Fix vruntime adjustment on reweight")
Signed-off-by: Yiwei Lin <s921975628@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Abel Wu <wuyun.abel@bytedance.com>
Link: https://lore.kernel.org/r/20231117080106.12890-1-s921975628@gmail.com
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@ -3815,17 +3815,17 @@ static void reweight_entity(struct cfs_rq *cfs_rq, struct sched_entity *se,
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enqueue_load_avg(cfs_rq, se);
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if (se->on_rq) {
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update_load_add(&cfs_rq->load, se->load.weight);
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if (!curr) {
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/*
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* The entity's vruntime has been adjusted, so let's check
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* whether the rq-wide min_vruntime needs updated too. Since
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* the calculations above require stable min_vruntime rather
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* than up-to-date one, we do the update at the end of the
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* reweight process.
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*/
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if (!curr)
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__enqueue_entity(cfs_rq, se);
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update_min_vruntime(cfs_rq);
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}
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/*
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* The entity's vruntime has been adjusted, so let's check
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* whether the rq-wide min_vruntime needs updated too. Since
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* the calculations above require stable min_vruntime rather
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* than up-to-date one, we do the update at the end of the
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* reweight process.
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*/
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update_min_vruntime(cfs_rq);
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}
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}
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