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Commit 66bd7887 authored Jan 05, 2015 by Joonwoo Park

sched: add sched feature FORCE_CPU_THROTTLING_IMMINENT



Add a new sched feature FORCE_CPU_THROTTLING_IMMINENT to perform
migration due to EA without checking frequency throttling.  This option
can give us better debugging and verification capability.

Change-Id: Iba445961a7f9812528b4e3aa9c6ddf47a3aad583
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>

parent 2c7cc326

kernel/sched/fair.c

+5 −1

Original line number	Diff line number	Diff line
		@@ -2513,8 +2513,12 @@ static inline int nr_big_tasks(struct rq *rq)
		static inline int is_cpu_throttling_imminent(int cpu)
		{
		int throttling = 0;
		struct cpu_pwr_stats *per_cpu_info = get_cpu_pwr_stats();
		struct cpu_pwr_stats *per_cpu_info;

		if (sched_feat(FORCE_CPU_THROTTLING_IMMINENT))
		return 1;

		per_cpu_info = get_cpu_pwr_stats();
		if (per_cpu_info)
		throttling = per_cpu_info[cpu].throttling;
		return throttling;

kernel/sched/features.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -70,3 +70,5 @@ SCHED_FEAT(LB_MIN, false)
		SCHED_FEAT(NUMA, false)
		SCHED_FEAT(NUMA_FORCE, false)
		#endif

		SCHED_FEAT(FORCE_CPU_THROTTLING_IMMINENT, false)