__wake_up_common
remaining = __wake_up_common(wq_head, mode, nr_exclusive, wake_flags,
__wake_up_common(wq_head, mode, nr, 0, NULL);
__wake_up_common(wq_head, mode, 1, 0, key);
__wake_up_common(wq_head, mode, 1, WF_SYNC, key);