From: Rafal Kozik Date: Thu, 7 Jun 2018 09:43:15 +0000 (+0200) Subject: net/ena: add (un)likely statements X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=3d19e1abb7930e138ec861ce6905d7adbe8ecf27;p=dpdk.git net/ena: add (un)likely statements Add likely and unlikely statements to increase performance. Signed-off-by: Rafal Kozik Acked-by: Michal Krawczyk --- diff --git a/drivers/net/ena/ena_ethdev.c b/drivers/net/ena/ena_ethdev.c index 5fbf0e5d5e..1425a04965 100644 --- a/drivers/net/ena/ena_ethdev.c +++ b/drivers/net/ena/ena_ethdev.c @@ -936,7 +936,7 @@ ena_calc_queue_size(struct ena_com_dev *ena_dev, if (!rte_is_power_of_2(queue_size)) queue_size = rte_align32pow2(queue_size >> 1); - if (queue_size == 0) { + if (unlikely(queue_size == 0)) { PMD_INIT_LOG(ERR, "Invalid queue size"); return -EFAULT; } @@ -1360,7 +1360,7 @@ static int ena_populate_rx_queue(struct ena_ring *rxq, unsigned int count) } /* When we submitted free recources to device... */ - if (i > 0) { + if (likely(i > 0)) { /* ...let HW know that it can fill buffers with data */ rte_wmb(); ena_com_write_sq_doorbell(rxq->ena_com_io_sq); @@ -1466,7 +1466,7 @@ static void ena_interrupt_handler_rte(void *cb_arg) struct ena_com_dev *ena_dev = &adapter->ena_dev; ena_com_admin_q_comp_intr_handler(ena_dev); - if (adapter->state != ENA_ADAPTER_STATE_CLOSED) + if (likely(adapter->state != ENA_ADAPTER_STATE_CLOSED)) ena_com_aenq_intr_handler(ena_dev, adapter); } @@ -1856,7 +1856,7 @@ static uint16_t eth_ena_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, mbuf->data_off = RTE_PKTMBUF_HEADROOM; mbuf->refcnt = 1; mbuf->next = NULL; - if (segments == 0) { + if (unlikely(segments == 0)) { mbuf->nb_segs = ena_rx_ctx.descs; mbuf->port = rx_ring->port_id; mbuf->pkt_len = 0;