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Commit f83db1b5 authored by Syed Rameez Mustafa's avatar Syed Rameez Mustafa
Browse files

sched: improve the scheduler 



This change is for general scheduler improvement.

Change-Id: I1f53c3b7daece8e0a9122f0b1a0ffde40d1d5cf1
Signed-off-by: default avatarSyed Rameez Mustafa <rameezmustafa@codeaurora.org>
parent 707a2ed2

kernel/sched/walt.c

+18 −0
Original line number Diff line number Diff line
@@ -152,6 +152,8 @@ __read_mostly unsigned int sysctl_sched_cpu_high_irqload = (10 * NSEC_PER_MSEC); 
 * IMPORTANT: Initialize both copies to same value!!

 */



static __read_mostly bool sched_predl;



__read_mostly unsigned int sched_ravg_hist_size = 5;

__read_mostly unsigned int sysctl_sched_ravg_hist_size = 5;
@@ -231,6 +233,16 @@ static int __init set_sched_ravg_window(char *str) 


early_param("sched_ravg_window", set_sched_ravg_window);



static int __init set_sched_predl(char *str)

{

	unsigned int predl;



	get_option(&str, &predl);

	sched_predl = !!predl;

	return 0;

}

early_param("sched_predl", set_sched_predl);



void inc_rq_hmp_stats(struct rq *rq, struct task_struct *p, int change_cra)

{

	inc_nr_big_task(&rq->hmp_stats, p);
@@ -1096,6 +1108,9 @@ void update_task_pred_demand(struct rq *rq, struct task_struct *p, int event) 
{

	u32 new, old;



	if (!sched_predl)

		return;



	if (is_idle_task(p) || exiting_task(p))

		return;
@@ -1618,6 +1633,9 @@ static inline u32 predict_and_update_buckets(struct rq *rq, 
	int bidx;

	u32 pred_demand;



	if (!sched_predl)

		return 0;



	bidx = busy_to_bucket(runtime);

	pred_demand = get_pred_busy(rq, p, bidx, runtime);

	bucket_increase(p->ravg.busy_buckets, bidx);