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Commit f777e92e authored by Amir Vajid's avatar Amir Vajid
Browse files

sched: walt: Improve the scheduler 



This change is for general scheduler improvements.

Change-Id: I8e0a1d29ec170f6b628d63e685600da80c1aca8a
Signed-off-by: default avatarAmir Vajid <avajid@codeaurora.org>
parent 66b4463f

include/linux/sched/sysctl.h

+5 −1
Original line number Original line Diff line number Diff line
@@ -48,8 +48,9 @@ extern unsigned int __weak sysctl_sched_task_unfilter_period; 
extern unsigned int __weak sysctl_sched_busy_hyst_enable_cpus;

extern unsigned int __weak sysctl_sched_busy_hyst_enable_cpus;

extern unsigned int __weak sysctl_sched_busy_hyst;

extern unsigned int __weak sysctl_sched_busy_hyst;

extern unsigned int __weak sysctl_sched_coloc_busy_hyst_enable_cpus;

extern unsigned int __weak sysctl_sched_coloc_busy_hyst_enable_cpus;

extern unsigned int __weak sysctl_sched_coloc_busy_hyst;

extern unsigned int __weak sysctl_sched_coloc_busy_hyst_cpu[NR_CPUS];

extern unsigned int __weak sysctl_sched_coloc_busy_hyst_max_ms;

extern unsigned int __weak sysctl_sched_coloc_busy_hyst_max_ms;

extern unsigned int __weak sysctl_sched_coloc_busy_hyst_cpu_busy_pct[NR_CPUS];

extern unsigned int __weak sysctl_sched_window_stats_policy;

extern unsigned int __weak sysctl_sched_window_stats_policy;

extern unsigned int __weak sysctl_sched_ravg_window_nr_ticks;

extern unsigned int __weak sysctl_sched_ravg_window_nr_ticks;

extern unsigned int __weak sysctl_sched_many_wakeup_threshold;

extern unsigned int __weak sysctl_sched_many_wakeup_threshold;
@@ -77,6 +78,9 @@ sched_ravg_window_handler(struct ctl_table *table, int write, 




extern int sched_boost_handler(struct ctl_table *table, int write,

extern int sched_boost_handler(struct ctl_table *table, int write,

			void __user *buffer, size_t *lenp, loff_t *ppos);

			void __user *buffer, size_t *lenp, loff_t *ppos);



extern int sched_busy_hyst_handler(struct ctl_table *table, int write,

			void __user *buffer, size_t *lenp, loff_t *ppos);

#endif

#endif





#if defined(CONFIG_PREEMPTIRQ_EVENTS) || defined(CONFIG_PREEMPT_TRACER)

#if defined(CONFIG_PREEMPTIRQ_EVENTS) || defined(CONFIG_PREEMPT_TRACER)

kernel/sched/walt.c

+6 −0
Original line number Original line Diff line number Diff line
@@ -123,6 +123,12 @@ int __weak sched_boost_handler(struct ctl_table *table, int write, 
	return -ENOSYS;

	return -ENOSYS;

}

}





int __weak sched_busy_hyst_handler(struct ctl_table *table, int write,

			void __user *buffer, size_t *lenp, loff_t *ppos)

{

	return -ENOSYS;

}



u64 __weak sched_ktime_clock(void) { return 0; }

u64 __weak sched_ktime_clock(void) { return 0; }





unsigned long __weak

unsigned long __weak

kernel/sysctl.c

+17 −26
Original line number Original line Diff line number Diff line
@@ -64,7 +64,6 @@ 
#include <linux/binfmts.h>

#include <linux/binfmts.h>

#include <linux/sched/sysctl.h>

#include <linux/sched/sysctl.h>

#include <linux/sched/coredump.h>

#include <linux/sched/coredump.h>

#include <linux/sched/stat.h>

#include <linux/kexec.h>

#include <linux/kexec.h>

#include <linux/bpf.h>

#include <linux/bpf.h>

#include <linux/mount.h>

#include <linux/mount.h>
@@ -242,10 +241,6 @@ static int proc_dostring_coredump(struct ctl_table *table, int write, 
#endif

#endif

static int proc_dopipe_max_size(struct ctl_table *table, int write,

static int proc_dopipe_max_size(struct ctl_table *table, int write,

		void __user *buffer, size_t *lenp, loff_t *ppos);

		void __user *buffer, size_t *lenp, loff_t *ppos);

#ifdef CONFIG_SCHED_WALT

static int proc_douintvec_minmax_schedhyst(struct ctl_table *table, int write,

		void __user *buffer, size_t *lenp, loff_t *ppos);

#endif





#ifdef CONFIG_MAGIC_SYSRQ

#ifdef CONFIG_MAGIC_SYSRQ

/* Note: sysrq code uses its own private copy */

/* Note: sysrq code uses its own private copy */
@@ -513,7 +508,7 @@ static struct ctl_table kern_table[] = { 
		.data		= &sysctl_sched_busy_hyst_enable_cpus,

		.data		= &sysctl_sched_busy_hyst_enable_cpus,

		.maxlen		= sizeof(unsigned int),

		.maxlen		= sizeof(unsigned int),

		.mode		= 0644,

		.mode		= 0644,

		.proc_handler	= proc_douintvec_minmax_schedhyst,

		.proc_handler	= sched_busy_hyst_handler,

		.extra1		= SYSCTL_ZERO,

		.extra1		= SYSCTL_ZERO,

		.extra2		= &two_hundred_fifty_five,

		.extra2		= &two_hundred_fifty_five,

	},

	},
@@ -522,7 +517,7 @@ static struct ctl_table kern_table[] = { 
		.data		= &sysctl_sched_busy_hyst,

		.data		= &sysctl_sched_busy_hyst,

		.maxlen		= sizeof(unsigned int),

		.maxlen		= sizeof(unsigned int),

		.mode		= 0644,

		.mode		= 0644,

		.proc_handler	= proc_douintvec_minmax_schedhyst,

		.proc_handler	= sched_busy_hyst_handler,

		.extra1		= SYSCTL_ZERO,

		.extra1		= SYSCTL_ZERO,

		.extra2		= &ns_per_sec,

		.extra2		= &ns_per_sec,

	},

	},
@@ -531,16 +526,16 @@ static struct ctl_table kern_table[] = { 
		.data		= &sysctl_sched_coloc_busy_hyst_enable_cpus,

		.data		= &sysctl_sched_coloc_busy_hyst_enable_cpus,

		.maxlen		= sizeof(unsigned int),

		.maxlen		= sizeof(unsigned int),

		.mode		= 0644,

		.mode		= 0644,

		.proc_handler	= proc_douintvec_minmax_schedhyst,

		.proc_handler	= sched_busy_hyst_handler,

		.extra1		= SYSCTL_ZERO,

		.extra1		= SYSCTL_ZERO,

		.extra2		= &two_hundred_fifty_five,

		.extra2		= &two_hundred_fifty_five,

	},

	},

	{

	{

		.procname	= "sched_coloc_busy_hyst_ns",

		.procname	= "sched_coloc_busy_hyst_cpu_ns",

		.data		= &sysctl_sched_coloc_busy_hyst,

		.data		= &sysctl_sched_coloc_busy_hyst_cpu,

		.maxlen		= sizeof(unsigned int),

		.maxlen		= sizeof(unsigned int) * NR_CPUS,

		.mode		= 0644,

		.mode		= 0644,

		.proc_handler	= proc_douintvec_minmax_schedhyst,

		.proc_handler	= sched_busy_hyst_handler,

		.extra1		= SYSCTL_ZERO,

		.extra1		= SYSCTL_ZERO,

		.extra2		= &ns_per_sec,

		.extra2		= &ns_per_sec,

	},

	},
@@ -549,10 +544,19 @@ static struct ctl_table kern_table[] = { 
		.data		= &sysctl_sched_coloc_busy_hyst_max_ms,

		.data		= &sysctl_sched_coloc_busy_hyst_max_ms,

		.maxlen		= sizeof(unsigned int),

		.maxlen		= sizeof(unsigned int),

		.mode		= 0644,

		.mode		= 0644,

		.proc_handler	= proc_douintvec_minmax_schedhyst,

		.proc_handler	= sched_busy_hyst_handler,

		.extra1		= SYSCTL_ZERO,

		.extra1		= SYSCTL_ZERO,

		.extra2		= &one_hundred_thousand,

		.extra2		= &one_hundred_thousand,

	},

	},

	{

		.procname	= "sched_coloc_busy_hyst_cpu_busy_pct",

		.data		= &sysctl_sched_coloc_busy_hyst_cpu_busy_pct,

		.maxlen		= sizeof(unsigned int) * NR_CPUS,

		.mode		= 0644,

		.proc_handler	= sched_busy_hyst_handler,

		.extra1		= SYSCTL_ZERO,

		.extra2		= &one_hundred,

	},

	{

	{

		.procname	= "sched_ravg_window_nr_ticks",

		.procname	= "sched_ravg_window_nr_ticks",

		.data		= &sysctl_sched_ravg_window_nr_ticks,

		.data		= &sysctl_sched_ravg_window_nr_ticks,
@@ -3165,19 +3169,6 @@ static int proc_dostring_coredump(struct ctl_table *table, int write, 
}

}

#endif

#endif





#ifdef CONFIG_SCHED_WALT

static int proc_douintvec_minmax_schedhyst(struct ctl_table *table, int write,

				void __user *buffer, size_t *lenp, loff_t *ppos)

{

	int ret = proc_douintvec_minmax(table, write, buffer, lenp, ppos);



	if (!ret && write)

		sched_update_hyst_times();



	return ret;

}

#endif



static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int write,

static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int write,

				     void __user *buffer,

				     void __user *buffer,

				     size_t *lenp, loff_t *ppos,

				     size_t *lenp, loff_t *ppos,