Function umtxq_alloc

freebsd/kern/kern_umtx.c:461–473

}

struct umtx_q *
umtxq_alloc(void)
{
	struct umtx_q *uq;

	uq = malloc(sizeof(struct umtx_q), M_UMTX, M_WAITOK | M_ZERO);
	uq->uq_spare_queue = malloc(sizeof(struct umtxq_queue), M_UMTX,
	    M_WAITOK | M_ZERO);
	TAILQ_INIT(&uq->uq_spare_queue->head);
	TAILQ_INIT(&uq->uq_pi_contested);
	uq->uq_inherited_pri = PRI_MAX;
	return (uq);
}

void
umtxq_free(struct umtx_q *uq)