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Commit 6dc3ebb3 authored by Pavankumar Kondeti's avatar Pavankumar Kondeti Committed by Lingutla Chandrasekhar
Browse files

sched/walt: Improve the scheduler 



This change is for general scheduler improvement.

Change-Id: Id1692f724f2efd22ada3365cebd154f1999930b5
Signed-off-by: default avatarPavankumar Kondeti <pkondeti@codeaurora.org>
[clingutla@codeaurora.org: Resolved trivial merge conflicts]
Signed-off-by: default avatarLingutla Chandrasekhar <clingutla@codeaurora.org>
parent 32735954

include/linux/sched/sysctl.h

+1 −1
Original line number Diff line number Diff line
@@ -59,7 +59,7 @@ extern unsigned int sysctl_sched_ravg_window_nr_ticks; 
extern unsigned int sysctl_sched_dynamic_ravg_window_enable;

extern unsigned int sysctl_sched_prefer_spread;

extern unsigned int sysctl_walt_rtg_cfs_boost_prio;

extern unsigned int sysctl_walt_low_latency_task_boost;

extern unsigned int sysctl_walt_low_latency_task_threshold;



extern int

walt_proc_group_thresholds_handler(struct ctl_table *table, int write,

include/trace/events/sched.h

+1 −1
Original line number Diff line number Diff line
@@ -1267,7 +1267,7 @@ TRACE_EVENT(sched_task_util, 
		__entry->start_cpu		= start_cpu;

#ifdef CONFIG_SCHED_WALT

		__entry->unfilter		= p->unfilter;

		__entry->low_latency		= p->low_latency;

		__entry->low_latency		= walt_low_latency_task(p);

#else

		__entry->unfilter		= 0;

		__entry->low_latency		= 0;

kernel/sched/fair.c

+1 −1
Original line number Diff line number Diff line
@@ -177,7 +177,7 @@ unsigned int sysctl_sched_min_task_util_for_boost = 51; 
unsigned int sysctl_sched_min_task_util_for_colocation = 35;

__read_mostly unsigned int sysctl_sched_prefer_spread;

unsigned int sysctl_walt_rtg_cfs_boost_prio = 99; /* disabled by default */

unsigned int sysctl_walt_low_latency_task_boost; /* disabled by default */

unsigned int sysctl_walt_low_latency_task_threshold; /* disabled by default */

#endif

unsigned int sched_small_task_threshold = 102;

__read_mostly unsigned int sysctl_sched_force_lb_enable = 1;

kernel/sched/sched.h

+2 −1
Original line number Diff line number Diff line
@@ -2911,7 +2911,8 @@ static inline bool task_rtg_high_prio(struct task_struct *p) 


static inline bool walt_low_latency_task(struct task_struct *p)

{

	return sysctl_walt_low_latency_task_boost && p->low_latency;

	return p->low_latency &&

		(task_util(p) < sysctl_walt_low_latency_task_threshold);

}



/* Is frequency of two cpus synchronized with each other? */

kernel/sysctl.c

+3 −3
Original line number Diff line number Diff line
@@ -580,13 +580,13 @@ static struct ctl_table kern_table[] = { 
		.extra2		= &max_cfs_boost_prio,

	},

	{

		.procname	= "walt_low_latency_task_boost",

		.data		= &sysctl_walt_low_latency_task_boost,

		.procname	= "walt_low_latency_task_threshold",

		.data		= &sysctl_walt_low_latency_task_threshold,

		.maxlen		= sizeof(unsigned int),

		.mode		= 0644,

		.proc_handler   = proc_dointvec_minmax,

		.extra1		= &zero,

		.extra2		= &one,

		.extra2		= &one_thousand,

	},

#endif

	{