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Commit 05d90a59 authored May 25, 2018 by qctecmdr Service Committed by Gerrit - the friendly Code Review server May 25, 2018

Merge "sched/fair: Consider task affinity while skipping a sched group"

parents abc63c08 b0df0e53

kernel/sched/core_ctl.c

+6 −1

Original line number	Diff line number	Diff line
		@@ -761,7 +761,12 @@ static bool eval_need(struct cluster_data *cluster)
		if (new_need > cluster->active_cpus) {
		ret = 1;
		} else {
		if (new_need == last_need) {
		/*
		* When there is no change in need and there are no more
		* active CPUs than currently needed, just update the
		* need time stamp and return.
		*/
		if (new_need == last_need && new_need == cluster->active_cpus) {
		cluster->need_ts = now;
		spin_unlock_irqrestore(&state_lock, flags);
		return 0;

kernel/sched/fair.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -7053,6 +7053,13 @@ static inline bool skip_sg(struct task_struct p, struct sched_group sg,
		if (!sg->group_weight)
		return true;

		/*
		* Don't skip a group if a task affinity allows it
		* to run only on that group.
		*/
		if (cpumask_subset(&p->cpus_allowed, sched_group_span(sg)))
		return false;

		if (!task_fits_max(p, fcpu))
		return true;