cpupower_write_sysfs
unsigned int cpupower_write_sysfs(const char *path, char *buf, size_t buflen);
if (cpupower_write_sysfs(path, linebuf, 3) <= 0)
if (cpupower_write_sysfs(path, linebuf, 30) <= 0)
if (cpupower_write_sysfs(path, linebuf, 20) <= 0)
if (cpupower_write_sysfs(path, linebuf, 2) <= 0)
if (cpupower_write_sysfs(path, linebuf, 2) <= 0)