From: Michal Krawczyk <mk@semihalf.com>
To: Marcin Wojtas <mw@semihalf.com>,
Michal Krawczyk <mk@semihalf.com>,
Guy Tzalik <gtzalik@amazon.com>,
Evgeny Schemeilin <evgenys@amazon.com>
Cc: dev@dpdk.org, matua@amazon.com, Rafal Kozik <rk@semihalf.com>
Subject: [dpdk-dev] [PATCH v1 19/24] net/ena: add (un)likely statements
Date: Wed, 9 May 2018 14:47:09 +0200 [thread overview]
Message-ID: <20180509124714.23305-10-mk@semihalf.com> (raw)
In-Reply-To: <20180509124714.23305-1-mk@semihalf.com>
From: Rafal Kozik <rk@semihalf.com>
Add likely and unlikely statements to increase performance.
Signed-off-by: Rafal Kozik <rk@semihalf.com>
Acked-by: Michal Krawczyk <mk@semihalf.com>
---
drivers/net/ena/ena_ethdev.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ena/ena_ethdev.c b/drivers/net/ena/ena_ethdev.c
index 43e34a252..b3aa751e9 100644
--- a/drivers/net/ena/ena_ethdev.c
+++ b/drivers/net/ena/ena_ethdev.c
@@ -940,7 +940,7 @@ 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;
}
@@ -1379,7 +1379,7 @@ 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);
@@ -1485,7 +1485,7 @@ 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);
}
@@ -1917,7 +1917,7 @@ 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;
--
2.14.1
next prev parent reply other threads:[~2018-05-09 12:47 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-09 12:47 [dpdk-dev] [PATCH v1 10/24] net/ena: add watchdog and keep alive AENQ handler Michal Krawczyk
2018-05-09 12:47 ` [dpdk-dev] [PATCH v1 11/24] net/ena: add checking for admin queue state Michal Krawczyk
2018-05-09 12:47 ` [dpdk-dev] [PATCH v1 12/24] net/ena: make watchdog configurable Michal Krawczyk
2018-05-09 12:47 ` [dpdk-dev] [PATCH v1 13/24] net/ena: add RX out of order completion Michal Krawczyk
2018-05-09 12:47 ` [dpdk-dev] [PATCH v1 14/24] net/ena: linearize Tx mbuf Michal Krawczyk
2018-05-09 12:47 ` [dpdk-dev] [PATCH v1 15/24] net/ena: add info about max number of Tx/Rx descriptors Michal Krawczyk
2018-05-09 12:47 ` [dpdk-dev] [PATCH v1 16/24] net/ena: unimplemented handler error Michal Krawczyk
2018-05-09 12:47 ` [dpdk-dev] [PATCH v1 17/24] net/ena: rework configuration of IO queue numbers Michal Krawczyk
2018-05-09 12:47 ` [dpdk-dev] [PATCH v1 18/24] net/ena: validate Tx req id Michal Krawczyk
2018-05-09 12:47 ` Michal Krawczyk [this message]
2018-05-09 12:47 ` [dpdk-dev] [PATCH v1 20/24] net/ena: adjust error checking and cleaning Michal Krawczyk
2018-05-09 12:47 ` [dpdk-dev] [PATCH v1 21/24] net/ena: update numa node Michal Krawczyk
2018-05-09 12:47 ` [dpdk-dev] [PATCH v1 22/24] net/ena: check pointer before memset Michal Krawczyk
2018-05-09 12:47 ` [dpdk-dev] [PATCH v1 23/24] net/ena: change memory type Michal Krawczyk
2018-05-09 12:47 ` [dpdk-dev] [PATCH v1 24/24] net/ena: fix GENMASK_ULL macro Michal Krawczyk
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