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 int sysfs_is_cpu_online(unsigned int cpu); 11 12 extern unsigned long sysfs_get_idlestate_latency(unsigned int cpu, 13 unsigned int idlestate); 14 extern unsigned long sysfs_get_idlestate_usage(unsigned int cpu, 15 unsigned int idlestate); 16 extern unsigned long long sysfs_get_idlestate_time(unsigned int cpu, 17 unsigned int idlestate); 18 extern char *sysfs_get_idlestate_name(unsigned int cpu, 19 unsigned int idlestate); 20 extern char *sysfs_get_idlestate_desc(unsigned int cpu, 21 unsigned int idlestate); 22 extern int sysfs_get_idlestate_count(unsigned int cpu); 23 24 extern char *sysfs_get_cpuidle_governor(void); 25 extern char *sysfs_get_cpuidle_driver(void); 26 27 extern int sysfs_get_sched(const char *smt_mc); 28 extern int sysfs_set_sched(const char *smt_mc, int val); 29 30 #endif /* __CPUPOWER_HELPERS_SYSFS_H__ */ 31