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-rw-r--r--tools/power/cpupower/utils/helpers/sysfs.h23
1 files changed, 23 insertions, 0 deletions
diff --git a/tools/power/cpupower/utils/helpers/sysfs.h b/tools/power/cpupower/utils/helpers/sysfs.h
new file mode 100644
index 000000000000..5d02d2fc70e1
--- /dev/null
+++ b/tools/power/cpupower/utils/helpers/sysfs.h
@@ -0,0 +1,23 @@
+#ifndef __CPUPOWER_HELPERS_SYSFS_H__
+#define __CPUPOWER_HELPERS_SYSFS_H__
+
+#define PATH_TO_CPU "/sys/devices/system/cpu/"
+#define MAX_LINE_LEN 255
+#define SYSFS_PATH_MAX 255
+
+extern unsigned int sysfs_read_file(const char *path, char *buf, size_t buflen);
+
+extern unsigned long sysfs_get_idlestate_latency(unsigned int cpu, unsigned int idlestate);
+extern unsigned long sysfs_get_idlestate_usage(unsigned int cpu, unsigned int idlestate);
+extern unsigned long long sysfs_get_idlestate_time(unsigned int cpu, unsigned int idlestate);
+extern char * sysfs_get_idlestate_name(unsigned int cpu, unsigned int idlestate);
+extern char * sysfs_get_idlestate_desc(unsigned int cpu, unsigned int idlestate);
+extern int sysfs_get_idlestate_count(unsigned int cpu);
+
+extern char * sysfs_get_cpuidle_governor(void);
+extern char * sysfs_get_cpuidle_driver(void);
+
+extern int sysfs_get_sched(const char* smt_mc);
+extern int sysfs_set_sched(const char* smt_mc, int val);
+
+#endif /* __CPUPOWER_HELPERS_SYSFS_H__ */