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Commit 64001cc3 authored by Satya Durga Srinivasu Prabhala's avatar Satya Durga Srinivasu Prabhala
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sched: sched-boost: Add support for multi cluster systems 



This change adds support for multi cluster systems by skipping
min capacity CPUs when boost is set.

Change-Id: I46da657a41b4d854cbbe37c2ab262cd2dca0da33
Signed-off-by: default avatarSatya Durga Srinivasu Prabhala <satyap@codeaurora.org>
parent 456c150f

kernel/sched/fair.c

+6 −5
Original line number Diff line number Diff line
@@ -6975,7 +6975,7 @@ static inline int find_best_target(struct task_struct *p, int *backup_cpu, 
	int best_idle_cpu = -1;

	int target_cpu = -1;

	int cpu, i;

	unsigned long max_capacity_orig = -1;

	unsigned long spare_cap;



	*backup_cpu = -1;
@@ -7021,6 +7021,7 @@ static inline int find_best_target(struct task_struct *p, int *backup_cpu, 
			 */

			wake_util = cpu_util_wake(i, p);

			new_util = wake_util + task_util(p);

			spare_cap = capacity_orig_of(i) - wake_util;



			switch (placement_boost) {

			/*
@@ -7028,12 +7029,12 @@ static inline int find_best_target(struct task_struct *p, int *backup_cpu, 
			 * CPUs

			 */

			case SCHED_BOOST_ON_BIG:

				if (capacity_orig < max_capacity_orig)

				if (is_min_capacity_cpu(i))

					continue;

				max_capacity_orig = capacity_orig;

				if (wake_util < min_wake_util) {



				if (spare_cap > target_max_spare_cap) {

					target_cpu = i;

					min_wake_util = wake_util;

					target_max_spare_cap = spare_cap;

				}

				continue;