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Commit 89162be6 authored by Abhijeet Dharmapurikar's avatar Abhijeet Dharmapurikar
Browse files

sched: improve the scheduler 



This change is for general scheduler improvement.

Change-Id: Idb019614ff31b3cfcde023cd92f8d791f2650dee
Signed-off-by: default avatarAbhijeet Dharmapurikar <adharmap@codeaurora.org>
parent 62433a08

kernel/sched/fair.c

+10 −5
Original line number Diff line number Diff line
@@ -3853,7 +3853,7 @@ struct find_best_target_env { 


static inline void adjust_cpus_for_packing(struct task_struct *p,

			int *target_cpu, int *best_idle_cpu,

			int target_cpus_count,

			int target_cpus_count, int shallowest_idle_cstate,

			struct find_best_target_env *fbt_env,

			bool boosted)

{
@@ -3863,7 +3863,7 @@ static inline void adjust_cpus_for_packing(struct task_struct *p, 
		return;



	if (task_placement_boost_enabled(p) || fbt_env->need_idle || boosted ||

			idle_get_state_idx(cpu_rq(*best_idle_cpu)) == -1) {

			shallowest_idle_cstate == -1) {

		*target_cpu = -1;

		return;

	}
@@ -3884,8 +3884,13 @@ static inline void adjust_cpus_for_packing(struct task_struct *p, 
	 * If there is only one active CPU and it is already above its current

	 * capacity, avoid placing additional task on the CPU.

	 */

	if (estimated_capacity > capacity_curr_of(*target_cpu))

	if (estimated_capacity > capacity_curr_of(*target_cpu)) {

		*target_cpu = -1;

		return;

	}



	if (fbt_env->rtg_target)

		*best_idle_cpu = -1;

}



static inline void update_misfit_status(struct task_struct *p, struct rq *rq)
@@ -7075,8 +7080,8 @@ static void find_best_target(struct sched_domain *sd, cpumask_t *cpus, 
	} while (sg = sg->next, sg != start_sd->groups);



	adjust_cpus_for_packing(p, &target_cpu, &best_idle_cpu,

				active_cpus_count, fbt_env,

				boosted);

				active_cpus_count, shallowest_idle_cstate,

				fbt_env, boosted);



	/*

	 * For non latency sensitive tasks, cases B and C in the previous loop,