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Commit b67caa7c authored by qctecmdr's avatar qctecmdr Committed by Gerrit - the friendly Code Review server
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Merge "sched/fair: Derive the downmigration margin wrt the destination CPU"

parents d23e4f5e 94fa18d7

kernel/sched/core.c

+4 −3
Original line number Diff line number Diff line
@@ -6870,11 +6870,12 @@ static void sched_update_down_migrate_values(int cap_margin_levels, 


	if (cap_margin_levels > 1) {

		/*

		 * Skip first cluster as down migrate value isn't needed

		 * Skip last cluster as down migrate value isn't needed.

		 * Because there is no downmigration to it.

		 */

		for (i = 0; i < cap_margin_levels; i++)

			if (cluster_cpus[i+1])

				for_each_cpu(cpu, cluster_cpus[i+1])

			if (cluster_cpus[i])

				for_each_cpu(cpu, cluster_cpus[i])

					sched_capacity_margin_down[cpu] =

					sysctl_sched_capacity_margin_down[i];

	} else {

kernel/sched/fair.c

+5 −1
Original line number Diff line number Diff line
@@ -3892,8 +3892,12 @@ static inline bool task_fits_capacity(struct task_struct *p, 
{

	unsigned int margin;



	/*

	 * Derive upmigration/downmigrate margin wrt the src/dest

	 * CPU.

	 */

	if (capacity_orig_of(task_cpu(p)) > capacity_orig_of(cpu))

		margin = sched_capacity_margin_down[task_cpu(p)];

		margin = sched_capacity_margin_down[cpu];

	else

		margin = sched_capacity_margin_up[task_cpu(p)];