1 #ifndef __CPUPOWER_HELPERS_SYSFS_H__ 2 #define __CPUPOWER_HELPERS_SYSFS_H__ 3 4 #define PATH_TO_CPU "/sys/devices/system/cpu/" 5 #define MAX_LINE_LEN 255 6 #define SYSFS_PATH_MAX 255 7 8 extern unsigned int sysfs_read_file(const char *path, char *buf, size_t buflen); 9 10 extern unsigned int sysfs_idlestate_file_exists(unsigned int cpu, 11 unsigned int idlestate, 12 const char *fname); 13 14 extern int sysfs_is_cpu_online(unsigned int cpu); 15 16 extern int sysfs_is_idlestate_disabled(unsigned int cpu, 17 unsigned int idlestate); 18 extern int sysfs_idlestate_disable(unsigned int cpu, unsigned int idlestate, 19 unsigned int disable); 20 extern unsigned long sysfs_get_idlestate_latency(unsigned int cpu, 21 unsigned int idlestate); 22 extern unsigned long sysfs_get_idlestate_usage(unsigned int cpu, 23 unsigned int idlestate); 24 extern unsigned long long sysfs_get_idlestate_time(unsigned int cpu, 25 unsigned int idlestate); 26 extern char *sysfs_get_idlestate_name(unsigned int cpu, 27 unsigned int idlestate); 28 extern char *sysfs_get_idlestate_desc(unsigned int cpu, 29 unsigned int idlestate); 30 extern unsigned int sysfs_get_idlestate_count(unsigned int cpu); 31 32 extern char *sysfs_get_cpuidle_governor(void); 33 extern char *sysfs_get_cpuidle_driver(void); 34 35 extern int sysfs_get_sched(const char *smt_mc); 36 extern int sysfs_set_sched(const char *smt_mc, int val); 37 38 #endif /* __CPUPOWER_HELPERS_SYSFS_H__ */ 39