From d6ddd17fb17cb250044bada4ae42a799375fd6c5 Mon Sep 17 00:00:00 2001 From: Shahed Shaikh Date: Fri, 18 Jan 2019 02:29:30 -0800 Subject: [PATCH] net/qede: remove prefetch in Tx path Incorrect placement of prefetch in Tx path is causing a performance drop of around ~2% on AMD platform. Fixes: 2ea6f76aff40 ("qede: add core driver") Cc: stable@dpdk.org Signed-off-by: Shahed Shaikh Acked-by: Rasesh Mody --- drivers/net/qede/qede_rxtx.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/net/qede/qede_rxtx.c b/drivers/net/qede/qede_rxtx.c index 684c4aeefc..eda19b2b17 100644 --- a/drivers/net/qede/qede_rxtx.c +++ b/drivers/net/qede/qede_rxtx.c @@ -2181,7 +2181,6 @@ qede_xmit_pkts(void *p_txq, struct rte_mbuf **tx_pkts, uint16_t nb_pkts) txq->nb_tx_avail -= bd1->data.nbds; txq->sw_tx_prod++; - rte_prefetch0(txq->sw_tx_ring[TX_PROD(txq)].mbuf); bd_prod = rte_cpu_to_le_16(ecore_chain_get_prod_idx(&txq->tx_pbl)); #ifdef RTE_LIBRTE_QEDE_DEBUG_TX -- 2.20.1