cpufreq_ondemand.c File Reference

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/cpufreq.h>
#include <linux/cpu.h>
#include <linux/jiffies.h>
#include <linux/kernel_stat.h>
#include <linux/mutex.h>
#include <linux/hrtimer.h>
#include <linux/tick.h>
#include <linux/ktime.h>
#include <linux/sched.h>

Go to the source code of this file.

Data Structures
struct	cpu_dbs_info_s
struct	dbs_tuners

Macros
#define	DEF_FREQUENCY_DOWN_DIFFERENTIAL   (10)
#define	DEF_FREQUENCY_UP_THRESHOLD   (80)
#define	DEF_SAMPLING_DOWN_FACTOR   (1)
#define	MAX_SAMPLING_DOWN_FACTOR   (100000)
#define	MICRO_FREQUENCY_DOWN_DIFFERENTIAL   (3)
#define	MICRO_FREQUENCY_UP_THRESHOLD   (95)
#define	MICRO_FREQUENCY_MIN_SAMPLE_RATE   (10000)
#define	MIN_FREQUENCY_UP_THRESHOLD   (11)
#define	MAX_FREQUENCY_UP_THRESHOLD   (100)
#define	MIN_SAMPLING_RATE_RATIO   (2)
#define	LATENCY_MULTIPLIER   (1000)
#define	MIN_LATENCY_MULTIPLIER   (100)
#define	TRANSITION_LATENCY_LIMIT   (10 * 1000 * 1000)
#define	show_one(file_name, object)

Enumerations
enum	{ DBS_NORMAL_SAMPLE, DBS_SUB_SAMPLE }

Functions
	define_one_global_ro (sampling_rate_min)
	show_one (sampling_rate, sampling_rate)
	show_one (io_is_busy, io_is_busy)
	show_one (up_threshold, up_threshold)
	show_one (sampling_down_factor, sampling_down_factor)
	show_one (ignore_nice_load, ignore_nice)
	show_one (powersave_bias, powersave_bias)
	define_one_global_rw (sampling_rate)
	define_one_global_rw (io_is_busy)
	define_one_global_rw (up_threshold)
	define_one_global_rw (sampling_down_factor)
	define_one_global_rw (ignore_nice_load)
	define_one_global_rw (powersave_bias)
	MODULE_AUTHOR ("Venkatesh Pallipadi <[email protected]>")
	MODULE_AUTHOR ("Alexey Starikovskiy <[email protected]>")
	MODULE_DESCRIPTION ("'cpufreq_ondemand' - A dynamic cpufreq governor for ""Low Latency Frequency Transition capable processors")
	MODULE_LICENSE ("GPL")
	module_init (cpufreq_gov_dbs_init)
	module_exit (cpufreq_gov_dbs_exit)

Macro Definition Documentation

#define DEF_FREQUENCY_DOWN_DIFFERENTIAL   (10)

Definition at line 31 of file cpufreq_ondemand.c.

#define DEF_FREQUENCY_UP_THRESHOLD   (80)

Definition at line 32 of file cpufreq_ondemand.c.

#define DEF_SAMPLING_DOWN_FACTOR   (1)

Definition at line 33 of file cpufreq_ondemand.c.

#define LATENCY_MULTIPLIER   (1000)

Definition at line 55 of file cpufreq_ondemand.c.

#define MAX_FREQUENCY_UP_THRESHOLD   (100)

Definition at line 39 of file cpufreq_ondemand.c.

#define MAX_SAMPLING_DOWN_FACTOR   (100000)

Definition at line 34 of file cpufreq_ondemand.c.

#define MICRO_FREQUENCY_DOWN_DIFFERENTIAL   (3)

Definition at line 35 of file cpufreq_ondemand.c.

#define MICRO_FREQUENCY_MIN_SAMPLE_RATE   (10000)

Definition at line 37 of file cpufreq_ondemand.c.

#define MICRO_FREQUENCY_UP_THRESHOLD   (95)

Definition at line 36 of file cpufreq_ondemand.c.

#define MIN_FREQUENCY_UP_THRESHOLD   (11)

Definition at line 38 of file cpufreq_ondemand.c.

#define MIN_LATENCY_MULTIPLIER   (100)

Definition at line 56 of file cpufreq_ondemand.c.

#define MIN_SAMPLING_RATE_RATIO   (2)

Definition at line 51 of file cpufreq_ondemand.c.

#define show_one	(		file_name,
			object
	)

Value:

static ssize_t show_##file_name                     \
(struct kobject *kobj, struct attribute *attr, char *buf)              \
{                                   \
    return sprintf(buf, "%u\n", dbs_tuners_ins.object);     \
}

Definition at line 247 of file cpufreq_ondemand.c.

#define TRANSITION_LATENCY_LIMIT   (10 * 1000 * 1000)

Definition at line 57 of file cpufreq_ondemand.c.

Enumeration Type Documentation

anonymous enum

Enumerator:

DBS_NORMAL_SAMPLE
DBS_SUB_SAMPLE

Definition at line 74 of file cpufreq_ondemand.c.

Function Documentation

define_one_global_ro

(

sampling_rate_min

)

define_one_global_rw

(

sampling_rate

)

define_one_global_rw

(

io_is_busy

)

define_one_global_rw

(

up_threshold

)

define_one_global_rw

(

sampling_down_factor

)

define_one_global_rw

(

ignore_nice_load

)

define_one_global_rw

(

powersave_bias

)

MODULE_AUTHOR

(

"Venkatesh Pallipadi <[email protected]>"

)

MODULE_AUTHOR

(

"Alexey Starikovskiy <[email protected]>"

)

MODULE_DESCRIPTION

(

"'cpufreq_ondemand' - A dynamic cpufreq governor for ""Low Latency Frequency Transition capable processors"

)

module_exit

(

cpufreq_gov_dbs_exit

)

module_init

(

cpufreq_gov_dbs_init

)

MODULE_LICENSE

(

"GPL"

)

show_one	(	sampling_rate	,
		sampling_rate
	)

show_one	(	io_is_busy	,
		io_is_busy
	)

show_one	(	up_threshold	,
		up_threshold
	)

show_one	(	sampling_down_factor	,
		sampling_down_factor
	)

show_one	(	ignore_nice_load	,
		ignore_nice
	)

show_one	(	powersave_bias	,
		powersave_bias
	)