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Commit 6f18847e authored by Joonwoo Park's avatar Joonwoo Park
Browse files

sched: WALT: introduce sched_group_{up,down}_migrate knobs 



Introduce sched_group_upmigrate and sched_group_downmigrate to control
these tunables at a runtime.

Change-Id: I8d88b0ca15dc1daec99b03de116192acc2660ba7
Signed-off-by: default avatarJoonwoo Park <joonwoop@codeaurora.org>
parent 4784ec24

include/linux/sched/sysctl.h

+10 −2
Original line number Diff line number Diff line
@@ -33,6 +33,8 @@ extern unsigned int sysctl_sched_cpu_high_irqload; 
extern unsigned int sysctl_sched_use_walt_cpu_util;

extern unsigned int sysctl_sched_use_walt_task_util;

extern unsigned int sysctl_sched_boost;

extern unsigned int sysctl_sched_group_upmigrate_pct;

extern unsigned int sysctl_sched_group_downmigrate_pct;

#endif



#ifdef CONFIG_SCHED_HMP
@@ -53,8 +55,6 @@ extern unsigned int sysctl_sched_spill_nr_run; 
extern unsigned int sysctl_sched_spill_load_pct;

extern unsigned int sysctl_sched_upmigrate_pct;

extern unsigned int sysctl_sched_downmigrate_pct;

extern unsigned int sysctl_sched_group_upmigrate_pct;

extern unsigned int sysctl_sched_group_downmigrate_pct;

extern unsigned int sysctl_early_detection_duration;

extern unsigned int sysctl_sched_small_wakee_task_load_pct;

extern unsigned int sysctl_sched_big_waker_task_load_pct;
@@ -67,6 +67,14 @@ extern unsigned int sysctl_sched_freq_aggregate_threshold_pct; 
extern unsigned int sysctl_sched_prefer_sync_wakee_to_waker;

extern unsigned int sysctl_sched_short_burst;

extern unsigned int sysctl_sched_short_sleep;



#elif defined(CONFIG_SCHED_WALT)



extern int

walt_proc_update_handler(struct ctl_table *table, int write,

			 void __user *buffer, size_t *lenp,

			 loff_t *ppos);



#endif /* CONFIG_SCHED_HMP */



enum sched_tunable_scaling {

kernel/sched/walt.c

+30 −0
Original line number Diff line number Diff line
@@ -3065,3 +3065,33 @@ void walt_irq_work(struct irq_work *irq_work) 


	core_ctl_check(this_rq()->window_start);

}



#ifndef CONFIG_SCHED_HMP

int walt_proc_update_handler(struct ctl_table *table, int write,

			     void __user *buffer, size_t *lenp,

			     loff_t *ppos)

{

	int ret;

	unsigned int *data = (unsigned int *)table->data;

	static DEFINE_MUTEX(mutex);



	mutex_lock(&mutex);

	ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos);

	if (ret || !write) {

		mutex_unlock(&mutex);

		return ret;

	}



	if (data == &sysctl_sched_group_upmigrate_pct)

		sched_group_upmigrate =

		    pct_to_real(sysctl_sched_group_upmigrate_pct);

	else if (data == &sysctl_sched_group_downmigrate_pct)

		sched_group_downmigrate =

		    pct_to_real(sysctl_sched_group_downmigrate_pct);

	else

		ret = -EINVAL;

	mutex_unlock(&mutex);



	return ret;

}

#endif

kernel/sysctl.c

+25 −16
Original line number Diff line number Diff line
@@ -300,6 +300,31 @@ static struct ctl_table kern_table[] = { 
		.mode           = 0644,

		.proc_handler   = proc_dointvec,

	},

	{

		.procname	= "sched_group_upmigrate",

		.data		= &sysctl_sched_group_upmigrate_pct,

		.maxlen		= sizeof(unsigned int),

		.mode		= 0644,

#ifdef CONFIG_SCHED_HMP

		.proc_handler	= sched_hmp_proc_update_handler,

#else

		.proc_handler	= walt_proc_update_handler,

#endif

		.extra1		= &sysctl_sched_group_downmigrate_pct,

	},

	{

		.procname	= "sched_group_downmigrate",

		.data		= &sysctl_sched_group_downmigrate_pct,

		.maxlen		= sizeof(unsigned int),

		.mode		= 0644,

#ifdef CONFIG_SCHED_HMP

		.proc_handler	= sched_hmp_proc_update_handler,

#else

		.proc_handler	= walt_proc_update_handler,

#endif

		.extra1		= &zero,

		.extra2		= &sysctl_sched_group_upmigrate_pct,

	},

#endif

#ifdef CONFIG_SCHED_HMP

	{
@@ -376,22 +401,6 @@ static struct ctl_table kern_table[] = { 
		.extra1		= &zero,

		.extra2		= &one_hundred,

	},

	{

		.procname	= "sched_group_upmigrate",

		.data		= &sysctl_sched_group_upmigrate_pct,

		.maxlen		= sizeof(unsigned int),

		.mode		= 0644,

		.proc_handler	= sched_hmp_proc_update_handler,

		.extra1		= &zero,

	},

	{

		.procname	= "sched_group_downmigrate",

		.data		= &sysctl_sched_group_downmigrate_pct,

		.maxlen		= sizeof(unsigned int),

		.mode		= 0644,

		.proc_handler	= sched_hmp_proc_update_handler,

		.extra1		= &zero,

	},

	{

		.procname	= "sched_init_task_load",

		.data		= &sysctl_sched_init_task_load_pct,