/* 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__ */