Symbol: umtxq_requeue
sys/compat/linux/linux_futex.c
710
td->td_retval[0] = umtxq_requeue(&key, nrwake, &key2, nrrequeue);
sys/sys/umtxvar.h
215
int umtxq_requeue(struct umtx_key *, int, struct umtx_key *, int);