From: Balazs Nemeth <bnemeth@redhat.com>
To: bnemeth@redhat.com, dev@dpdk.org
Subject: [dpdk-dev] [PATCH 6/8] net/qede: prefetch txq->hw_cons_ptr
Date: Fri, 5 Mar 2021 14:14:04 +0100 [thread overview]
Message-ID: <52ddb58c1ca5fe43f0308517bc519ba931859840.1614938727.git.bnemeth@redhat.com> (raw)
In-Reply-To: <cover.1614938727.git.bnemeth@redhat.com>
Ensure that, while ecore_chain_get_cons_idx is running, txq->hw_cons_ptr
is prefetched. This shows a slight performance improvement.
Signed-off-by: Balazs Nemeth <bnemeth@redhat.com>
---
drivers/net/qede/qede_rxtx.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/qede/qede_rxtx.c b/drivers/net/qede/qede_rxtx.c
index e24a937f4..b74a1ec1b 100644
--- a/drivers/net/qede/qede_rxtx.c
+++ b/drivers/net/qede/qede_rxtx.c
@@ -894,6 +894,7 @@ qede_process_tx_compl(__rte_unused struct ecore_dev *edev,
uint16_t first_idx;
rte_compiler_barrier();
+ rte_prefetch0(txq->hw_cons_ptr);
sw_tx_cons = ecore_chain_get_cons_idx(&txq->tx_pbl);
hw_bd_cons = rte_le_to_cpu_16(*txq->hw_cons_ptr);
#ifdef RTE_LIBRTE_QEDE_DEBUG_TX
--
2.29.2
next prev parent reply other threads:[~2021-03-05 13:15 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-05 13:13 [dpdk-dev] [PATCH 0/8] Optimize qede use of rx/tx_entries Balazs Nemeth
2021-03-05 13:13 ` [dpdk-dev] [PATCH 1/8] net/qede: remove flags from qede_tx_entry and simplify to rte_mbuf Balazs Nemeth
2021-03-05 13:14 ` [dpdk-dev] [PATCH 2/8] net/qede: avoid repeatedly calling ecore_chain_get_cons_idx Balazs Nemeth
2021-03-05 13:14 ` [dpdk-dev] [PATCH 3/8] net/qede: assume txq->sw_tx_ring[idx] is never null in qede_free_tx_pkt Balazs Nemeth
2021-03-05 13:14 ` [dpdk-dev] [PATCH 4/8] net/qede: inline qede_free_tx_pkt to prepare for rte_pktmbuf_free_bulk Balazs Nemeth
2021-03-05 13:14 ` [dpdk-dev] [PATCH 5/8] net/qede: use rte_pktmbuf_free_bulk instead of rte_pktmbuf_free Balazs Nemeth
2021-03-05 13:14 ` Balazs Nemeth [this message]
2021-03-05 13:14 ` [dpdk-dev] [PATCH 7/8] net/qede: prefetch next packet to free Balazs Nemeth
2021-03-05 13:14 ` [dpdk-dev] [PATCH 8/8] net/qede: remove page_offset from struct qede_rx_entry and simplify Balazs Nemeth
2021-03-08 18:13 ` [dpdk-dev] [PATCH 0/8] Optimize qede use of rx/tx_entries Jerin Jacob
2021-03-10 6:43 ` [dpdk-dev] [EXT] " Igor Russkikh
2021-03-10 7:51 ` Jerin Jacob
2021-03-10 8:17 ` Igor Russkikh
2021-03-20 13:16 ` Jerin Jacob
2021-03-22 17:08 ` [dpdk-dev] [EXT] " Igor Russkikh
2021-03-24 9:18 ` Jerin Jacob
2021-03-24 9:34 ` Balazs Nemeth
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