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Commit 92f2e815 authored by Pavankumar Kondeti's avatar Pavankumar Kondeti Committed by Satya Durga Srinivasu Prabhala
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sched/fair: Improve the scheduler 



This change is for general scheduler improvement.

Change-Id: I0caae436c933656c9a7b5135c6d4a8179be06631
Signed-off-by: default avatarPavankumar Kondeti <pkondeti@codeaurora.org>
[satyap@codeaurora.org: fix trivial merge conflicts]
Signed-off-by: default avatarSatya Durga Srinivasu Prabhala <satyap@codeaurora.org>
parent 98ae7e3c

kernel/sched/fair.c

+2 −6
Original line number Diff line number Diff line
@@ -8333,7 +8333,8 @@ int can_migrate_task(struct task_struct *p, struct lb_env *env) 
		struct root_domain *rd = env->dst_rq->rd;



		if (rcu_dereference(rd->pd) && !READ_ONCE(rd->overutilized) &&

						env->idle == CPU_NEWLY_IDLE) {

					env->idle == CPU_NEWLY_IDLE &&

					!task_in_related_thread_group(p)) {

			long util_cum_dst, util_cum_src;

			unsigned long demand;
@@ -9782,7 +9783,6 @@ static struct sched_group *find_busiest_group(struct lb_env *env) 


		if (rcu_dereference(rd->pd) && !READ_ONCE(rd->overutilized)) {

			int cpu_local, cpu_busiest;

			long util_cum;

			unsigned long capacity_local, capacity_busiest;



			if (env->idle != CPU_NEWLY_IDLE)
@@ -9802,10 +9802,6 @@ static struct sched_group *find_busiest_group(struct lb_env *env) 
			} else if (capacity_local == capacity_busiest) {

				if (cpu_rq(cpu_busiest)->nr_running < 2)

					goto out_balanced;



				util_cum = cpu_util_cum(cpu_busiest, 0);

				if (util_cum < cpu_util_cum(cpu_local, 0))

					goto out_balanced;

			}

		}

	}