mirror of https://gitee.com/openkylin/linux.git
40 lines
1.4 KiB
C
40 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __CPUPOWER_HELPERS_SYSFS_H__
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#define __CPUPOWER_HELPERS_SYSFS_H__
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#define PATH_TO_CPU "/sys/devices/system/cpu/"
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#define MAX_LINE_LEN 255
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#define SYSFS_PATH_MAX 255
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extern unsigned int sysfs_read_file(const char *path, char *buf, size_t buflen);
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extern unsigned int sysfs_idlestate_file_exists(unsigned int cpu,
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unsigned int idlestate,
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const char *fname);
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extern int sysfs_is_cpu_online(unsigned int cpu);
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extern int sysfs_is_idlestate_disabled(unsigned int cpu,
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unsigned int idlestate);
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extern int sysfs_idlestate_disable(unsigned int cpu, unsigned int idlestate,
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unsigned int disable);
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extern unsigned long sysfs_get_idlestate_latency(unsigned int cpu,
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unsigned int idlestate);
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extern unsigned long sysfs_get_idlestate_usage(unsigned int cpu,
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unsigned int idlestate);
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extern unsigned long long sysfs_get_idlestate_time(unsigned int cpu,
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unsigned int idlestate);
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extern char *sysfs_get_idlestate_name(unsigned int cpu,
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unsigned int idlestate);
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extern char *sysfs_get_idlestate_desc(unsigned int cpu,
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unsigned int idlestate);
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extern unsigned int sysfs_get_idlestate_count(unsigned int cpu);
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extern char *sysfs_get_cpuidle_governor(void);
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extern char *sysfs_get_cpuidle_driver(void);
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extern int sysfs_get_sched(const char *smt_mc);
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extern int sysfs_set_sched(const char *smt_mc, int val);
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#endif /* __CPUPOWER_HELPERS_SYSFS_H__ */
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