253 sem_undo_add(short val, ushort_t num, struct sem_undo *undo)  in sem_undo_add()  argument
255 	int newval = undo->un_aoe[num] - val;  in sem_undo_add()
259 	undo->un_aoe[num] = newval;  in sem_undo_add()
272 	struct sem_undo *undo;  in sem_undo_clear()  local
278 	for (undo = list_head(&sp->sem_undos); undo;  in sem_undo_clear()
279 	    undo = list_next(&sp->sem_undos, undo))  in sem_undo_clear()
281 			undo->un_aoe[i] = 0;  in sem_undo_clear()
288 sem_rollback(ksemid_t *sp, struct sembuf *op, int n, struct sem_undo *undo)  in sem_rollback()  argument
298 			ASSERT(undo != NULL);  in sem_rollback()
299 			(void) sem_undo_add(-op->sem_op, op->sem_num, undo);  in sem_rollback()
309 	struct sem_undo *undo;  in sem_rmid()  local
314 	while (undo = list_head(&sp->sem_undos)) {  in sem_rmid()
315 		list_remove(&sp->sem_undos, undo);  in sem_rmid()
316 		mutex_enter(&undo->un_proc->p_lock);  in sem_rmid()
317 		if (undo->un_proc->p_semacct == NULL) {  in sem_rmid()
318 			mutex_exit(&undo->un_proc->p_lock);  in sem_rmid()
321 		avl_remove(undo->un_proc->p_semacct, undo);  in sem_rmid()
322 		mutex_exit(&undo->un_proc->p_lock);  in sem_rmid()
323 		kmem_free(undo, size);  in sem_rmid()
610 	struct sem_undo	*undo;  in semexit()  local
618 	while (undo = avl_destroy_nodes(tree, &cookie)) {  in semexit()
619 		ksemid_t *sp = undo->un_sp;  in semexit()
626 				int adj = undo->un_aoe[i];  in semexit()
640 			list_remove(&sp->sem_undos, undo);  in semexit()
643 		kmem_free(undo, size);  in semexit()
810 	struct sem_undo *undo;  in sem_undo_alloc()  local
817 	undo = kmem_zalloc(size, KM_SLEEP);  in sem_undo_alloc()
818 	undo->un_proc = pp;  in sem_undo_alloc()
819 	undo->un_sp = sp;  in sem_undo_alloc()
826 		kmem_free(undo, size);  in sem_undo_alloc()
846 		kmem_free(undo, size);  in sem_undo_alloc()
848 		*un = undo;  in sem_undo_alloc()
849 		avl_insert(pp->p_semacct, undo, where);  in sem_undo_alloc()
851 		list_insert_head(&sp->sem_undos, undo);  in sem_undo_alloc()
876 	struct sem_undo	*undo;  in semop()  local
995 			undo = avl_find(pp->p_semacct, &template, NULL);  in semop()
997 			undo = NULL;  in semop()
999 		if (undo == NULL) {  in semop()
1005 			    &undo))  in semop()
1031 			    undo)))) {  in semop()
1033 					sem_rollback(sp, uops, i, undo);  in semop()
1061 				    op->sem_num, undo))) {  in semop()
1063 						sem_rollback(sp, uops, i, undo);  in semop()
1072 				sem_rollback(sp, uops, i, undo);  in semop()
1119 				sem_rollback(sp, uops, i, undo);  in semop()