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Commit 1fd8d612 authored by qctecmdr Service's avatar qctecmdr Service Committed by Gerrit - the friendly Code Review server
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Merge "sched: improve the scheduler"

parents cb30e42b 5be9b47a

include/linux/sched/sysctl.h

+2 −1
Original line number Diff line number Diff line
@@ -41,7 +41,8 @@ extern unsigned int sysctl_sched_boost; 
extern unsigned int sysctl_sched_group_upmigrate_pct;

extern unsigned int sysctl_sched_group_downmigrate_pct;

extern unsigned int sysctl_sched_walt_rotate_big_tasks;

extern unsigned int sysctl_sched_min_task_util_for_boost_colocation;

extern unsigned int sysctl_sched_min_task_util_for_boost;

extern unsigned int sysctl_sched_min_task_util_for_colocation;

extern unsigned int sysctl_sched_little_cluster_coloc_fmin_khz;



extern int

kernel/sched/fair.c

+13 −4
Original line number Diff line number Diff line
@@ -199,7 +199,9 @@ unsigned int sched_capacity_margin_down[NR_CPUS] = { 


#ifdef CONFIG_SCHED_WALT

/* 1ms default for 20ms window size scaled to 1024 */

unsigned int sysctl_sched_min_task_util_for_boost_colocation = 51;

unsigned int sysctl_sched_min_task_util_for_boost = 51;

/* 0.68ms default for 20ms window size scaled to 1024 */

unsigned int sysctl_sched_min_task_util_for_colocation = 35;

#endif



static inline void update_load_add(struct load_weight *lw, unsigned long inc)
@@ -7957,6 +7959,15 @@ static inline int wake_to_idle(struct task_struct *p) 
}



#ifdef CONFIG_SCHED_WALT

static inline bool is_task_util_above_min_thresh(struct task_struct *p)

{

	unsigned int threshold = (sysctl_sched_boost == CONSERVATIVE_BOOST) ?

			sysctl_sched_min_task_util_for_boost :

			sysctl_sched_min_task_util_for_colocation;



	return task_util(p) > threshold;

}



static inline struct cpumask *find_rtg_target(struct task_struct *p)

{

	struct related_thread_group *grp;
@@ -7965,9 +7976,7 @@ static inline struct cpumask *find_rtg_target(struct task_struct *p) 
	rcu_read_lock();



	grp = task_related_thread_group(p);

	if (grp && grp->preferred_cluster &&

			(task_util(p) >

			sysctl_sched_min_task_util_for_boost_colocation)) {

	if (grp && grp->preferred_cluster && is_task_util_above_min_thresh(p)) {

		rtg_target = &grp->preferred_cluster->cpus;

		if (!task_fits_max(p, cpumask_first(rtg_target)))

			rtg_target = NULL;

kernel/sched/sched.h

+1 −1
Original line number Diff line number Diff line
@@ -2940,7 +2940,7 @@ static inline enum sched_boost_policy task_boost_policy(struct task_struct *p) 
		 */

		if (sysctl_sched_boost == CONSERVATIVE_BOOST &&

				task_util(p) <=

				sysctl_sched_min_task_util_for_boost_colocation)

				sysctl_sched_min_task_util_for_boost)

			policy = SCHED_BOOST_NONE;

	}

kernel/sysctl.c

+11 −2
Original line number Diff line number Diff line
@@ -378,8 +378,17 @@ static struct ctl_table kern_table[] = { 
		.extra2		= &one,

	},

	{

		.procname	= "sched_min_task_util_for_boost_colocation",

		.data		= &sysctl_sched_min_task_util_for_boost_colocation,

		.procname	= "sched_min_task_util_for_boost",

		.data		= &sysctl_sched_min_task_util_for_boost,

		.maxlen		= sizeof(unsigned int),

		.mode		= 0644,

		.proc_handler	= proc_dointvec_minmax,

		.extra1		= &zero,

		.extra2		= &one_thousand,

	},

	{

		.procname	= "sched_min_task_util_for_colocation",

		.data		= &sysctl_sched_min_task_util_for_colocation,

		.maxlen		= sizeof(unsigned int),

		.mode		= 0644,

		.proc_handler	= proc_dointvec_minmax,