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Commit 50db4a39 authored by Jonathan Avila's avatar Jonathan Avila Committed by Sai Harshini Nimmala
Browse files

sched/walt: Improve the scheduler 



This change is for general scheduler improvement.

Change-Id: Ic6be9069f6119d52e3915ea032f72ea35d27ee3e
Signed-off-by: default avatarJonathan Avila <avilaj@codeaurora.org>
Signed-off-by: default avatarSai Harshini Nimmala <snimmala@codeaurora.org>
parent e2c44d5b

kernel/sched/sched.h

+1 −0
Original line number Diff line number Diff line
@@ -991,6 +991,7 @@ struct rq { 
	struct walt_sched_stats walt_stats;



	u64			window_start;

	u32			prev_window_size;

	unsigned long		walt_flags;



	u64			cur_irqload;

kernel/sched/walt.c

+6 −3
Original line number Diff line number Diff line
@@ -301,6 +301,7 @@ update_window_start(struct rq *rq, u64 wallclock, int event) 


	rq->cum_window_demand_scaled =

			rq->walt_stats.cumulative_runnable_avg_scaled;

	rq->prev_window_size = sched_ravg_window;



	return old_window_start;

}
@@ -1460,7 +1461,7 @@ static void update_cpu_busy_time(struct task_struct *p, struct rq *rq, 
	int p_is_curr_task = (p == rq->curr);

	u64 mark_start = p->ravg.mark_start;

	u64 window_start = rq->window_start;

	u32 window_size = sched_ravg_window;

	u32 window_size = rq->prev_window_size;

	u64 delta;

	u64 *curr_runnable_sum = &rq->curr_runnable_sum;

	u64 *prev_runnable_sum = &rq->prev_runnable_sum;
@@ -3343,9 +3344,10 @@ void walt_irq_work(struct irq_work *irq_work) 
	 */

	if (!is_migration) {

		if (sched_ravg_window != new_sched_ravg_window) {

			printk_deferred("ALERT: changing window size from %u to %u\n",

			printk_deferred("ALERT: changing window size from %u to %u at %lu\n",

					sched_ravg_window,

					new_sched_ravg_window);

					new_sched_ravg_window,

					sched_ktime_clock());

			sched_ravg_window = new_sched_ravg_window;

			walt_tunables_fixup();

		}
@@ -3494,6 +3496,7 @@ void walt_sched_init_rq(struct rq *rq) 
	cpumask_set_cpu(cpu_of(rq), &rq->freq_domain_cpumask);



	rq->walt_stats.cumulative_runnable_avg_scaled = 0;

	rq->prev_window_size = sched_ravg_window;

	rq->window_start = 0;

	rq->walt_stats.nr_big_tasks = 0;

	rq->walt_flags = 0;

kernel/sched/walt.h

+1 −0
Original line number Diff line number Diff line
@@ -31,6 +31,7 @@ 
#define SCHED_NEW_TASK_WINDOWS 5



extern unsigned int sched_ravg_window;

extern unsigned int new_sched_ravg_window;

extern unsigned int max_possible_efficiency;

extern unsigned int min_possible_efficiency;

extern unsigned int max_possible_freq;