tools/power/cpupower/utils/helpers/sysfs.h

   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__ */