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Commit d0549da8 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: Consider an idle CPU outside c-state as an active CPU"

parents 31ff7d69 646fe8f4

kernel/sched/fair.c

+6 −2
Original line number Diff line number Diff line
@@ -6816,13 +6816,17 @@ struct find_best_target_env { 


static bool is_packing_eligible(struct task_struct *p, int target_cpu,

				struct find_best_target_env *fbt_env,

				unsigned int target_cpus_count)

				unsigned int target_cpus_count,

				int best_idle_cstate)

{

	unsigned long tutil, estimated_capacity;



	if (fbt_env->placement_boost || fbt_env->need_idle)

		return false;



	if (best_idle_cstate == -1)

		return false;



	if (target_cpus_count != 1)

		return true;
@@ -7183,7 +7187,7 @@ static inline int find_best_target(struct task_struct *p, int *backup_cpu, 
	} while (sg = sg->next, sg != sd->groups);



	if (best_idle_cpu != -1 && !is_packing_eligible(p, target_cpu, fbt_env,

					active_cpus_count)) {

					active_cpus_count, best_idle_cstate)) {

		if (target_cpu == task_cpu(p))

			fbt_env->avoid_prev_cpu = true;