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
9extern unsigned int sysfs_read_file(const char *path, char *buf, size_t buflen);
10
11extern unsigned int sysfs_idlestate_file_exists(unsigned int cpu,
12						unsigned int idlestate,
13						const char *fname);
14
15extern int sysfs_is_cpu_online(unsigned int cpu);
16
17extern int sysfs_is_idlestate_disabled(unsigned int cpu,
18				       unsigned int idlestate);
19extern int sysfs_idlestate_disable(unsigned int cpu, unsigned int idlestate,
20				   unsigned int disable);
21extern unsigned long sysfs_get_idlestate_latency(unsigned int cpu,
22						unsigned int idlestate);
23extern unsigned long sysfs_get_idlestate_usage(unsigned int cpu,
24					unsigned int idlestate);
25extern unsigned long long sysfs_get_idlestate_time(unsigned int cpu,
26						unsigned int idlestate);
27extern char *sysfs_get_idlestate_name(unsigned int cpu,
28				unsigned int idlestate);
29extern char *sysfs_get_idlestate_desc(unsigned int cpu,
30				unsigned int idlestate);
31extern unsigned int sysfs_get_idlestate_count(unsigned int cpu);
32
33extern char *sysfs_get_cpuidle_governor(void);
34extern char *sysfs_get_cpuidle_driver(void);
35
36extern int sysfs_get_sched(const char *smt_mc);
37extern int sysfs_set_sched(const char *smt_mc, int val);
38
39#endif /* __CPUPOWER_HELPERS_SYSFS_H__ */
40