Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/tools/power/cpupower/utils/helpers/sysfs.h
26299 views
1
/* SPDX-License-Identifier: GPL-2.0 */

2
#ifndef __CPUPOWER_HELPERS_SYSFS_H__

3
#define __CPUPOWER_HELPERS_SYSFS_H__

4


5
#define PATH_TO_CPU "/sys/devices/system/cpu/"

6
#define MAX_LINE_LEN 255

7
#define SYSFS_PATH_MAX 255

8


9
extern unsigned int sysfs_read_file(const char *path, char *buf, size_t buflen);

10


11
extern unsigned int sysfs_idlestate_file_exists(unsigned int cpu,

12
						unsigned int idlestate,

13
						const char *fname);

14


15
extern int sysfs_is_cpu_online(unsigned int cpu);

16


17
extern int sysfs_is_idlestate_disabled(unsigned int cpu,

18
				       unsigned int idlestate);

19
extern int sysfs_idlestate_disable(unsigned int cpu, unsigned int idlestate,

20
				   unsigned int disable);

21
extern unsigned long sysfs_get_idlestate_latency(unsigned int cpu,

22
						unsigned int idlestate);

23
extern unsigned long sysfs_get_idlestate_usage(unsigned int cpu,

24
					unsigned int idlestate);

25
extern unsigned long long sysfs_get_idlestate_time(unsigned int cpu,

26
						unsigned int idlestate);

27
extern char *sysfs_get_idlestate_name(unsigned int cpu,

28
				unsigned int idlestate);

29
extern char *sysfs_get_idlestate_desc(unsigned int cpu,

30
				unsigned int idlestate);

31
extern unsigned int sysfs_get_idlestate_count(unsigned int cpu);

32


33
extern char *sysfs_get_cpuidle_governor(void);

34
extern char *sysfs_get_cpuidle_driver(void);

35


36
extern int sysfs_get_sched(const char *smt_mc);

37
extern int sysfs_set_sched(const char *smt_mc, int val);

38


39
#endif /* __CPUPOWER_HELPERS_SYSFS_H__ */

40


41