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From: David Marchand <david.marchand@redhat.com>
To: dev@dpdk.org
Cc: stable@dpdk.org, Rasesh Mody <rmody@marvell.com>,
	Shahed Shaikh <shshaikh@marvell.com>
Subject: [dpdk-stable] [PATCH] net/qede: only access sw rx ring index for debug
Date: Fri, 27 Sep 2019 13:28:49 +0200	[thread overview]
Message-ID: <1569583729-19851-1-git-send-email-david.marchand@redhat.com> (raw)

Caught by clang, this idx value is only used for a debug message when
the mbufs allocation fails.
No need to use idx as a temporary storage.

Fixes: 8f2312474529 ("net/qede: fix performance bottleneck in Rx path")
Cc: stable@dpdk.org

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 drivers/net/qede/qede_rxtx.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/qede/qede_rxtx.c b/drivers/net/qede/qede_rxtx.c
index c38cbb9..1fbeba2 100644
--- a/drivers/net/qede/qede_rxtx.c
+++ b/drivers/net/qede/qede_rxtx.c
@@ -46,8 +46,6 @@ static inline int qede_alloc_rx_bulk_mbufs(struct qede_rx_queue *rxq, int count)
 	int i, ret = 0;
 	uint16_t idx;
 
-	idx = rxq->sw_rx_prod & NUM_RX_BDS(rxq);
-
 	if (count > QEDE_MAX_BULK_ALLOC_COUNT)
 		count = QEDE_MAX_BULK_ALLOC_COUNT;
 
@@ -56,7 +54,9 @@ static inline int qede_alloc_rx_bulk_mbufs(struct qede_rx_queue *rxq, int count)
 		PMD_RX_LOG(ERR, rxq,
 			   "Failed to allocate %d rx buffers "
 			    "sw_rx_prod %u sw_rx_cons %u mp entries %u free %u",
-			    count, idx, rxq->sw_rx_cons & NUM_RX_BDS(rxq),
+			    count,
+			    rxq->sw_rx_prod & NUM_RX_BDS(rxq),
+			    rxq->sw_rx_cons & NUM_RX_BDS(rxq),
 			    rte_mempool_avail_count(rxq->mb_pool),
 			    rte_mempool_in_use_count(rxq->mb_pool));
 		return -ENOMEM;
-- 
1.8.3.1


             reply	other threads:[~2019-09-27 11:29 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-27 11:28 David Marchand [this message]
2019-10-03 14:39 ` [dpdk-stable] [dpdk-dev] " Jerin Jacob
2019-10-03 18:30   ` Rasesh Mody
2019-10-03 18:29 [dpdk-stable] " Rasesh Mody

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