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Commit a0a23b2f authored by Shaleen Agrawal's avatar Shaleen Agrawal
Browse files

sched: walt: Improve the Scheduler 



This change is for general scheduler improvement.

Change-Id: Ida39a3ee5e6b4b0d3255bfef95601890afd80709
Signed-off-by: default avatarShaleen Agrawal <shalagra@codeaurora.org>
parent 70fe4cf2

include/linux/sched/sysctl.h

+1 −0
Original line number Diff line number Diff line
@@ -52,6 +52,7 @@ extern unsigned int sysctl_sched_busy_hyst; 
extern unsigned int sysctl_sched_coloc_busy_hyst_enable_cpus;

extern unsigned int sysctl_sched_coloc_busy_hyst;

extern unsigned int sysctl_sched_coloc_busy_hyst_max_ms;

extern unsigned int sysctl_sched_window_stats_policy;



extern int

walt_proc_group_thresholds_handler(struct ctl_table *table, int write,

kernel/sched/walt.c

+4 −4
Original line number Diff line number Diff line
@@ -118,7 +118,7 @@ __read_mostly unsigned int sched_ravg_hist_size = 5; 


static __read_mostly unsigned int sched_io_is_busy = 1;



__read_mostly unsigned int sched_window_stats_policy =

__read_mostly unsigned int sysctl_sched_window_stats_policy =

	WINDOW_STATS_MAX_RECENT_AVG;



/* Window size (in ns) */
@@ -1790,13 +1790,13 @@ static void update_history(struct rq *rq, struct task_struct *p, 


	p->ravg.sum = 0;



	if (sched_window_stats_policy == WINDOW_STATS_RECENT) {

	if (sysctl_sched_window_stats_policy == WINDOW_STATS_RECENT) {

		demand = runtime;

	} else if (sched_window_stats_policy == WINDOW_STATS_MAX) {

	} else if (sysctl_sched_window_stats_policy == WINDOW_STATS_MAX) {

		demand = max;

	} else {

		avg = div64_u64(sum, sched_ravg_hist_size);

		if (sched_window_stats_policy == WINDOW_STATS_AVG)

		if (sysctl_sched_window_stats_policy == WINDOW_STATS_AVG)

			demand = avg;

		else

			demand = max(avg, runtime);

kernel/sched/walt.h

+0 −1
Original line number Diff line number Diff line
@@ -40,7 +40,6 @@ extern struct mutex cluster_lock; 
extern rwlock_t related_thread_group_lock;

extern __read_mostly unsigned int sched_ravg_hist_size;

extern __read_mostly unsigned int sched_freq_aggregate;

extern __read_mostly unsigned int sched_window_stats_policy;

extern __read_mostly unsigned int sched_group_upmigrate;

extern __read_mostly unsigned int sched_group_downmigrate;

kernel/sysctl.c

+9 −0
Original line number Diff line number Diff line
@@ -363,6 +363,15 @@ static struct ctl_table kern_table[] = { 
		.extra1		= &zero,

		.extra2		= (void *)&sched_user_hint_max,

	},

	{

		.procname	= "sched_window_stats_policy",

		.data		= &sysctl_sched_window_stats_policy,

		.maxlen		= sizeof(unsigned int),

		.mode		= 0644,

		.proc_handler   = proc_dointvec_minmax,

		.extra1		= &zero,

		.extra2		= &four,

	},

	{

		.procname       = "sched_cpu_high_irqload",

		.data           = &sysctl_sched_cpu_high_irqload,