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Commit 248c7ba7 authored by Linux Build Service Account's avatar Linux Build Service Account Committed by Gerrit - the friendly Code Review server
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Merge "sched/fair: Skip energy_diff() for need_idle tasks"

parents 21f99cce c0d07e76

include/trace/events/sched.h

+5 −0
Original line number Diff line number Diff line
@@ -786,6 +786,11 @@ DEFINE_EVENT(sched_task_util, sched_task_util_imbalance, 
	TP_PROTO(struct task_struct *p, int task_cpu, unsigned long task_util, int nominated_cpu, int target_cpu, int ediff, bool need_idle),

	TP_ARGS(p, task_cpu, task_util, nominated_cpu, target_cpu, ediff, need_idle)

);



DEFINE_EVENT(sched_task_util, sched_task_util_need_idle,

	TP_PROTO(struct task_struct *p, int task_cpu, unsigned long task_util, int nominated_cpu, int target_cpu, int ediff, bool need_idle),

	TP_ARGS(p, task_cpu, task_util, nominated_cpu, target_cpu, ediff, need_idle)

);

#endif



/*

kernel/sched/fair.c

+8 −0
Original line number Diff line number Diff line
@@ -7144,6 +7144,14 @@ static int energy_aware_wake_cpu(struct task_struct *p, int target, int sync) 
			return target_cpu;

		}



		if (need_idle) {

			trace_sched_task_util_need_idle(p, task_cpu(p),

						task_util(p),

						target_cpu, target_cpu,

						0, need_idle);

			return target_cpu;

		}



		/*

		 * We always want to migrate the task to the best CPU when

		 * placement boost is active.