15 	struct funnel_queue *queue;  in vdo_make_funnel_queue()  local
17 	result = vdo_allocate(1, struct funnel_queue, "funnel queue", &queue);  in vdo_make_funnel_queue()
25 	queue->stub.next = NULL;  in vdo_make_funnel_queue()
26 	queue->newest = &queue->stub;  in vdo_make_funnel_queue()
27 	queue->oldest = &queue->stub;  in vdo_make_funnel_queue()
29 	*queue_ptr = queue;  in vdo_make_funnel_queue()
33 void vdo_free_funnel_queue(struct funnel_queue *queue)  in vdo_free_funnel_queue()  argument
35 	vdo_free(queue);  in vdo_free_funnel_queue()
38 static struct funnel_queue_entry *get_oldest(struct funnel_queue *queue)  in get_oldest()  argument
45 	struct funnel_queue_entry *oldest = queue->oldest;  in get_oldest()
48 	if (oldest == &queue->stub) {  in get_oldest()
60 		queue->oldest = oldest;  in get_oldest()
69 		struct funnel_queue_entry *newest = READ_ONCE(queue->newest);  in get_oldest()
83 		vdo_funnel_queue_put(queue, &queue->stub);  in get_oldest()
103 struct funnel_queue_entry *vdo_funnel_queue_poll(struct funnel_queue *queue)  in vdo_funnel_queue_poll()  argument
105 	struct funnel_queue_entry *oldest = get_oldest(queue);  in vdo_funnel_queue_poll()
116 	queue->oldest = READ_ONCE(oldest->next);  in vdo_funnel_queue_poll()
127 	uds_prefetch_address(queue->oldest, true);  in vdo_funnel_queue_poll()
137 bool vdo_is_funnel_queue_empty(struct funnel_queue *queue)  in vdo_is_funnel_queue_empty()  argument
139 	return get_oldest(queue) == NULL;  in vdo_is_funnel_queue_empty()
148 bool vdo_is_funnel_queue_idle(struct funnel_queue *queue)  in vdo_is_funnel_queue_idle()  argument
154 	if (queue->oldest != &queue->stub)  in vdo_is_funnel_queue_idle()
166 	if (READ_ONCE(queue->newest) != &queue->stub)  in vdo_is_funnel_queue_idle()