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Commit 39398397 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: add preference for prev and sibling CPU in RT task placement"

parents 96dba852 0ec35511

kernel/sched/rt.c

+5 −1
Original line number Original line Diff line number Diff line
@@ -1651,6 +1651,7 @@ static int find_lowest_rq_hmp(struct task_struct *task) 
	int cpu_cost, min_cost = INT_MAX;

	int cpu_cost, min_cost = INT_MAX;

	u64 cpu_load, min_load = ULLONG_MAX;

	u64 cpu_load, min_load = ULLONG_MAX;

	int best_cpu = -1;

	int best_cpu = -1;

	int prev_cpu = task_cpu(task);

	int i;

	int i;





	/* Make sure the mask is initialized first */

	/* Make sure the mask is initialized first */
@@ -1703,7 +1704,10 @@ static int find_lowest_rq_hmp(struct task_struct *task) 
		if (sched_cpu_high_irqload(i))

		if (sched_cpu_high_irqload(i))

			continue;

			continue;





		if (cpu_load < min_load) {

		if (cpu_load < min_load ||

		    (cpu_load == min_load &&

		     (i == prev_cpu || (best_cpu != prev_cpu &&

					cpus_share_cache(prev_cpu, i))))) {

			min_load = cpu_load;

			min_load = cpu_load;

			best_cpu = i;

			best_cpu = i;

		}

		}