ktime_get_aux_ts64
extern bool ktime_get_aux_ts64(clockid_t id, struct timespec64 *kt);
ktime_get_aux_ts64(id, ts);
EXPORT_SYMBOL_GPL(ktime_get_aux_ts64);
return ktime_get_aux_ts64(id, tp) ? 0 : -ENODEV;
return ktime_get_aux_ts64(CLOCK_AUX + tkid - TIMEKEEPER_AUX_FIRST, ts);