Function dma_shared_data_prepare

dpdk/lib/dmadev/rte_dmadev.c:183–212

}

static int
dma_shared_data_prepare(void)
{
	const char *mz_name = "rte_dma_dev_data";
	const struct rte_memzone *mz;
	size_t size;

	if (dma_devices_shared_data != NULL)
		return 0;

	size = sizeof(*dma_devices_shared_data) +
		sizeof(struct rte_dma_dev_data) * dma_devices_max;

	if (rte_eal_process_type() == RTE_PROC_PRIMARY)
		mz = rte_memzone_reserve(mz_name, size, rte_socket_id(), 0);
	else
		mz = rte_memzone_lookup(mz_name);
	if (mz == NULL)
		return -ENOMEM;

	dma_devices_shared_data = mz->addr;
	if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
		memset(dma_devices_shared_data, 0, size);
		dma_devices_shared_data->dev_max = dma_devices_max;
	} else {
		dma_devices_max = dma_devices_shared_data->dev_max;
	}

	return 0;
}

static int
dma_data_prepare(void)