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Commit 07b40c51 authored by Pavankumar Kondeti's avatar Pavankumar Kondeti
Browse files

sched: improve the scheduler 



This change is for general scheduler improvement.

Change-Id: Ib4795668b27709c053046f26de72140f237a9ebe
Signed-off-by: default avatarPavankumar Kondeti <pkondeti@codeaurora.org>
parent 2d097a73

kernel/sched/boost.c

+0 −2
Original line number Diff line number Diff line
@@ -10,7 +10,6 @@ 
 * GNU General Public License for more details.

 */



#include <linux/jiffies.h>

#include "sched.h"

#include <linux/of.h>

#include <linux/sched/core_ctl.h>
@@ -140,7 +139,6 @@ static void _sched_set_boost(int old_val, int type) 
	case RESTRAINED_BOOST:

		freq_aggr_threshold_backup =

			update_freq_aggregate_threshold(1);

		mod_timer(&sched_grp_timer, jiffies + 1);

		break;



	default:

kernel/sched/walt.c

+9 −41
Original line number Diff line number Diff line
@@ -100,45 +100,6 @@ static void release_rq_locks_irqrestore(const cpumask_t *cpus, 
	local_irq_restore(*flags);

}



struct timer_list sched_grp_timer;

static void sched_agg_grp_load(unsigned long data)

{

	struct sched_cluster *cluster;

	unsigned long flags;

	int cpu;



	acquire_rq_locks_irqsave(cpu_possible_mask, &flags);



	for_each_sched_cluster(cluster) {

		u64 aggr_grp_load = 0;



		for_each_cpu(cpu, &cluster->cpus) {

			struct rq *rq = cpu_rq(cpu);



			if (rq->curr)

				update_task_ravg(rq->curr, rq, TASK_UPDATE,

						sched_ktime_clock(), 0);

			aggr_grp_load +=

				rq->grp_time.prev_runnable_sum;

		}



		cluster->aggr_grp_load = aggr_grp_load;

	}



	release_rq_locks_irqrestore(cpu_possible_mask, &flags);



	if (sched_boost() == RESTRAINED_BOOST)

		mod_timer(&sched_grp_timer, jiffies + 1);

}



static int __init setup_sched_grp_timer(void)

{

	init_timer_deferrable(&sched_grp_timer);

	sched_grp_timer.function = sched_agg_grp_load;

	return 0;

}

late_initcall(setup_sched_grp_timer);



/* 1 -> use PELT based load stats, 0 -> use window-based load stats */

unsigned int __read_mostly walt_disabled = 0;
@@ -3058,6 +3019,8 @@ void walt_irq_work(struct irq_work *irq_work) 
	wc = sched_ktime_clock();



	for_each_sched_cluster(cluster) {

		u64 aggr_grp_load = 0;



		raw_spin_lock(&cluster->load_lock);



		for_each_cpu(cpu, &cluster->cpus) {
@@ -3066,14 +3029,19 @@ void walt_irq_work(struct irq_work *irq_work) 
				update_task_ravg(rq->curr, rq,

						TASK_UPDATE, wc, 0);

				account_load_subtractions(rq);

				aggr_grp_load += rq->grp_time.prev_runnable_sum;

			}



			cpufreq_update_util(rq, 0);

		}



		cluster->aggr_grp_load = aggr_grp_load;



		raw_spin_unlock(&cluster->load_lock);

	}



	for_each_sched_cluster(cluster)

		for_each_cpu(cpu, &cluster->cpus)

			cpufreq_update_util(cpu_rq(cpu), 0);



	for_each_cpu(cpu, cpu_possible_mask)

		raw_spin_unlock(&cpu_rq(cpu)->lock);