sysfs_read_file   391 tools/power/cpupower/utils/helpers/sysfs.c 	return sysfs_read_file(path, buf, buflen);
sysfs_read_file     9 tools/power/cpupower/utils/helpers/sysfs.h extern unsigned int sysfs_read_file(const char *path, char *buf, size_t buflen);