sched/fair: do not pull single task if a dst_cpu is not idle



Misfit task will get migrated in the tick path so there is no need
to do active pulling of the single task.

Change-Id: I372b23c038f4e34af4608859ba7a7d9ec9ca4283
Signed-off-by: Runmin Wang <runminw@codeaurora.org>

parent dd5080ee

kernel/sched/fair.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -10203,7 +10203,8 @@ static int need_active_balance(struct lb_env *env)
		return 1;
		}

		if ((capacity_of(env->src_cpu) < capacity_of(env->dst_cpu)) &&
		if ((env->idle != CPU_NOT_IDLE) &&
		(capacity_of(env->src_cpu) < capacity_of(env->dst_cpu)) &&
		((capacity_orig_of(env->src_cpu) < capacity_orig_of(env->dst_cpu))) &&
		env->src_rq->cfs.h_nr_running == 1 &&
		cpu_overutilized(env->src_cpu) &&