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Commit b9173741 authored by Sai Harshini Nimmala's avatar Sai Harshini Nimmala
Browse files

sched/walt: Improve the scheduler 



This change is for general scheduler improvement.

Change-Id: If4e1dfbdb1f71989a75d33c8fa995ba0397b3ba9
Signed-off-by: default avatarSai Harshini Nimmala <snimmala@codeaurora.org>
parent 30a20ea7

include/linux/sched.h

+16 −1
Original line number Diff line number Diff line
@@ -120,6 +120,18 @@ enum task_boost_type { 
	TASK_BOOST_END,

};



/*

 * Enum for display driver to provide varying refresh rates

 */

enum fps {

	FPS0 = 0,

	FPS30 = 30,

	FPS48 = 48,

	FPS60 = 60,

	FPS90 = 90,

	FPS120 = 120,

};



#ifdef CONFIG_DEBUG_ATOMIC_SLEEP



/*
@@ -557,6 +569,7 @@ extern void sched_update_cpu_freq_min_max(const cpumask_t *cpus, u32 fmin, 
					  u32 fmax);

extern int sched_set_boost(int enable);

extern void free_task_load_ptrs(struct task_struct *p);

extern void sched_set_refresh_rate(enum fps fps);



#define RAVG_HIST_SIZE_MAX 5

#define NUM_BUSY_BUCKETS 10
@@ -626,6 +639,8 @@ static inline void free_task_load_ptrs(struct task_struct *p) { } 


static inline void sched_update_cpu_freq_min_max(const cpumask_t *cpus,

					u32 fmin, u32 fmax) { }



static inline void sched_set_refresh_rate(enum fps fps) { }

#endif /* CONFIG_SCHED_WALT */



struct sched_rt_entity {

kernel/sched/walt.c

+16 −0
Original line number Diff line number Diff line
@@ -3689,3 +3689,19 @@ int sched_ravg_window_handler(struct ctl_table *table, 
	mutex_unlock(&mutex);

	return ret;

}



void sched_set_refresh_rate(enum fps fps)

{

	int new_nr_ticks;



	if (HZ == 250) {

		if (fps > FPS90)

			new_nr_ticks = 2;

		else if (fps == FPS90)

			new_nr_ticks = 3;

		else

			new_nr_ticks = 5;

		sched_window_nr_ticks_change(new_nr_ticks);

	}

}

EXPORT_SYMBOL(sched_set_refresh_rate);