| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef __CPUPOWER_HELPERS_SYSFS_H__ |
| #define __CPUPOWER_HELPERS_SYSFS_H__ |
| |
| #define PATH_TO_CPU "/sys/devices/system/cpu/" |
| #define MAX_LINE_LEN 255 |
| #define SYSFS_PATH_MAX 255 |
| |
| extern unsigned int sysfs_read_file(const char *path, char *buf, size_t buflen); |
| |
| extern unsigned int sysfs_idlestate_file_exists(unsigned int cpu, |
| unsigned int idlestate, |
| const char *fname); |
| |
| extern int sysfs_is_cpu_online(unsigned int cpu); |
| |
| extern int sysfs_is_idlestate_disabled(unsigned int cpu, |
| unsigned int idlestate); |
| extern int sysfs_idlestate_disable(unsigned int cpu, unsigned int idlestate, |
| unsigned int disable); |
| extern unsigned long sysfs_get_idlestate_latency(unsigned int cpu, |
| unsigned int idlestate); |
| extern unsigned long sysfs_get_idlestate_usage(unsigned int cpu, |
| unsigned int idlestate); |
| extern unsigned long long sysfs_get_idlestate_time(unsigned int cpu, |
| unsigned int idlestate); |
| extern char *sysfs_get_idlestate_name(unsigned int cpu, |
| unsigned int idlestate); |
| extern char *sysfs_get_idlestate_desc(unsigned int cpu, |
| unsigned int idlestate); |
| extern unsigned int sysfs_get_idlestate_count(unsigned int cpu); |
| |
| extern char *sysfs_get_cpuidle_governor(void); |
| extern char *sysfs_get_cpuidle_driver(void); |
| |
| extern int sysfs_get_sched(const char *smt_mc); |
| extern int sysfs_set_sched(const char *smt_mc, int val); |
| |
| #endif /* __CPUPOWER_HELPERS_SYSFS_H__ */ |
