1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun #ifndef __CPUPOWER_HELPERS_SYSFS_H__ 3*4882a593Smuzhiyun #define __CPUPOWER_HELPERS_SYSFS_H__ 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun #define PATH_TO_CPU "/sys/devices/system/cpu/" 6*4882a593Smuzhiyun #define MAX_LINE_LEN 255 7*4882a593Smuzhiyun #define SYSFS_PATH_MAX 255 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun extern unsigned int sysfs_read_file(const char *path, char *buf, size_t buflen); 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun extern unsigned int sysfs_idlestate_file_exists(unsigned int cpu, 12*4882a593Smuzhiyun unsigned int idlestate, 13*4882a593Smuzhiyun const char *fname); 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun extern int sysfs_is_cpu_online(unsigned int cpu); 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun extern int sysfs_is_idlestate_disabled(unsigned int cpu, 18*4882a593Smuzhiyun unsigned int idlestate); 19*4882a593Smuzhiyun extern int sysfs_idlestate_disable(unsigned int cpu, unsigned int idlestate, 20*4882a593Smuzhiyun unsigned int disable); 21*4882a593Smuzhiyun extern unsigned long sysfs_get_idlestate_latency(unsigned int cpu, 22*4882a593Smuzhiyun unsigned int idlestate); 23*4882a593Smuzhiyun extern unsigned long sysfs_get_idlestate_usage(unsigned int cpu, 24*4882a593Smuzhiyun unsigned int idlestate); 25*4882a593Smuzhiyun extern unsigned long long sysfs_get_idlestate_time(unsigned int cpu, 26*4882a593Smuzhiyun unsigned int idlestate); 27*4882a593Smuzhiyun extern char *sysfs_get_idlestate_name(unsigned int cpu, 28*4882a593Smuzhiyun unsigned int idlestate); 29*4882a593Smuzhiyun extern char *sysfs_get_idlestate_desc(unsigned int cpu, 30*4882a593Smuzhiyun unsigned int idlestate); 31*4882a593Smuzhiyun extern unsigned int sysfs_get_idlestate_count(unsigned int cpu); 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun extern char *sysfs_get_cpuidle_governor(void); 34*4882a593Smuzhiyun extern char *sysfs_get_cpuidle_driver(void); 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun extern int sysfs_get_sched(const char *smt_mc); 37*4882a593Smuzhiyun extern int sysfs_set_sched(const char *smt_mc, int val); 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun #endif /* __CPUPOWER_HELPERS_SYSFS_H__ */ 40