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Commit 2381da12 authored by Pavankumar Kondeti's avatar Pavankumar Kondeti
Browse files

sched/fair: Improve the scheduler 



This change is for general scheduler improvement.

Change-Id: I19ec68fe40d931b501ea84a9306d04fcb58db60d
Signed-off-by: default avatarPavankumar Kondeti <pkondeti@codeaurora.org>
parent 86287959

kernel/sched/fair.c

+9 −1
Original line number Diff line number Diff line
@@ -6953,7 +6953,7 @@ static void find_best_target(struct sched_domain *sd, cpumask_t *cpus, 
	if (prefer_idle && boosted)

		target_capacity = 0;



	if (fbt_env->strict_max)

	if (fbt_env->strict_max || p->in_iowait)

		most_spare_wake_cap = LONG_MIN;



	/* Find start CPU based on boost value */
@@ -7270,6 +7270,10 @@ static void find_best_target(struct sched_domain *sd, cpumask_t *cpus, 
		next_group_higher_cap = (capacity_orig_of(group_first_cpu(sg)) <

			capacity_orig_of(group_first_cpu(sg->next)));



		if (p->in_iowait && !next_group_higher_cap &&

				most_spare_cap_cpu != -1)

			break;



		/*

		 * If we've found a cpu, but the boost is ON_ALL we continue

		 * visiting other clusters. If the boost is ON_BIG we visit
@@ -8716,6 +8720,10 @@ int can_migrate_task(struct task_struct *p, struct lb_env *env) 
	if (!can_migrate_boosted_task(p, env->src_cpu, env->dst_cpu))

		return 0;



	if (p->in_iowait && is_min_capacity_cpu(env->dst_cpu) &&

			!is_min_capacity_cpu(env->src_cpu))

		return 0;



	if (!cpumask_test_cpu(env->dst_cpu, &p->cpus_allowed)) {

		int cpu;