C++ (Cpp) zfcp_qdio_buffers_dequeue示例

示例#1

/* locks:       must only be called with zfcp_data.config_sema taken */
int
zfcp_qdio_allocate_queues(struct zfcp_adapter *adapter)
{
	int buffer_count;
	int retval = 0;

	buffer_count =
	    zfcp_qdio_buffers_enqueue(&(adapter->request_queue.buffer[0]),
				      QDIO_MAX_BUFFERS_PER_Q);
	if (buffer_count < QDIO_MAX_BUFFERS_PER_Q) {
		ZFCP_LOG_DEBUG("only %d QDIO buffers allocated for request "
			       "queue\n", buffer_count);
		zfcp_qdio_buffers_dequeue(&(adapter->request_queue.buffer[0]),
					  buffer_count);
		retval = -ENOMEM;
		goto out;
	}

	buffer_count =
	    zfcp_qdio_buffers_enqueue(&(adapter->response_queue.buffer[0]),
				      QDIO_MAX_BUFFERS_PER_Q);
	if (buffer_count < QDIO_MAX_BUFFERS_PER_Q) {
		ZFCP_LOG_DEBUG("only %d QDIO buffers allocated for response "
			       "queue", buffer_count);
		zfcp_qdio_buffers_dequeue(&(adapter->response_queue.buffer[0]),
					  buffer_count);
		ZFCP_LOG_TRACE("freeing request_queue buffers\n");
		zfcp_qdio_buffers_dequeue(&(adapter->request_queue.buffer[0]),
					  QDIO_MAX_BUFFERS_PER_Q);
		retval = -ENOMEM;
		goto out;
	}
 out:
	return retval;
}

示例#2

文件： zfcp_qdio.c 项目： miettal/armadillo420_standard

/* locks:       must only be called with zfcp_data.config_sema taken */
void
zfcp_qdio_free_queues(struct zfcp_adapter *adapter)
{
	ZFCP_LOG_TRACE("freeing request_queue buffers\n");
	zfcp_qdio_buffers_dequeue(adapter->request_queue.buffer);

	ZFCP_LOG_TRACE("freeing response_queue buffers\n");
	zfcp_qdio_buffers_dequeue(adapter->response_queue.buffer);
}

示例#3

/* locks:       must only be called with zfcp_data.config_sema taken */
void
zfcp_qdio_free_queues(struct zfcp_adapter *adapter)
{
	ZFCP_LOG_TRACE("freeing request_queue buffers\n");
	zfcp_qdio_buffers_dequeue(&(adapter->request_queue.buffer[0]),
				  QDIO_MAX_BUFFERS_PER_Q);

	ZFCP_LOG_TRACE("freeing response_queue buffers\n");
	zfcp_qdio_buffers_dequeue(&(adapter->response_queue.buffer[0]),
				  QDIO_MAX_BUFFERS_PER_Q);
}

示例#4

文件： zfcp_qdio.c 项目： miettal/armadillo420_standard

/*
 * Allocates BUFFER memory to each of the pointers of the qdio_buffer_t
 * array in the adapter struct.
 * Cur_buf is the pointer array
 *
 * returns:	zero on success else -ENOMEM
 * locks:       must only be called with zfcp_data.config_sema taken
 */
static int
zfcp_qdio_buffers_enqueue(struct qdio_buffer **sbuf)
{
	int pos;

	for (pos = 0; pos < QDIO_MAX_BUFFERS_PER_Q; pos += QBUFF_PER_PAGE) {
		sbuf[pos] = (struct qdio_buffer *) get_zeroed_page(GFP_KERNEL);
		if (!sbuf[pos]) {
			zfcp_qdio_buffers_dequeue(sbuf);
			return -ENOMEM;
		}
	}
	for (pos = 0; pos < QDIO_MAX_BUFFERS_PER_Q; pos++)
		if (pos % QBUFF_PER_PAGE)
			sbuf[pos] = sbuf[pos - 1] + 1;
	return 0;
}