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- A single fix to restore fairness between control groups with equal priority
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cba5e97280
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@ -3298,6 +3298,24 @@ static inline void cfs_rq_util_change(struct cfs_rq *cfs_rq, int flags)
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#ifdef CONFIG_SMP
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#ifdef CONFIG_FAIR_GROUP_SCHED
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static inline bool cfs_rq_is_decayed(struct cfs_rq *cfs_rq)
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{
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if (cfs_rq->load.weight)
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return false;
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if (cfs_rq->avg.load_sum)
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return false;
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if (cfs_rq->avg.util_sum)
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return false;
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if (cfs_rq->avg.runnable_sum)
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return false;
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return true;
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}
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/**
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* update_tg_load_avg - update the tg's load avg
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* @cfs_rq: the cfs_rq whose avg changed
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@ -4091,6 +4109,11 @@ static inline void update_misfit_status(struct task_struct *p, struct rq *rq)
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#else /* CONFIG_SMP */
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static inline bool cfs_rq_is_decayed(struct cfs_rq *cfs_rq)
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{
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return true;
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}
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#define UPDATE_TG 0x0
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#define SKIP_AGE_LOAD 0x0
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#define DO_ATTACH 0x0
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@ -4749,8 +4772,8 @@ static int tg_unthrottle_up(struct task_group *tg, void *data)
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cfs_rq->throttled_clock_task_time += rq_clock_task(rq) -
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cfs_rq->throttled_clock_task;
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/* Add cfs_rq with already running entity in the list */
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if (cfs_rq->nr_running >= 1)
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/* Add cfs_rq with load or one or more already running entities to the list */
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if (!cfs_rq_is_decayed(cfs_rq) || cfs_rq->nr_running)
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list_add_leaf_cfs_rq(cfs_rq);
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}
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@ -7996,23 +8019,6 @@ static bool __update_blocked_others(struct rq *rq, bool *done)
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#ifdef CONFIG_FAIR_GROUP_SCHED
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static inline bool cfs_rq_is_decayed(struct cfs_rq *cfs_rq)
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{
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if (cfs_rq->load.weight)
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return false;
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if (cfs_rq->avg.load_sum)
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return false;
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if (cfs_rq->avg.util_sum)
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return false;
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if (cfs_rq->avg.runnable_sum)
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return false;
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return true;
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}
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static bool __update_blocked_fair(struct rq *rq, bool *done)
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{
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struct cfs_rq *cfs_rq, *pos;
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