[dpdk-stable] patch 'net/qede: remove prefetch in Tx path' has been queued to LTS release 17.11.6

[Yongseok Koh]

Hi,

FYI, your patch has been queued to LTS release 17.11.6

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objection by 03/13/19. So please
shout if anyone has objection.

Also note that after the patch there's a diff of the upstream commit vs the patch applied
to the branch. If the code is different (ie: not only metadata diffs), due for example to
a change in context or macro names, please double check it.

Thanks.

Yongseok

---
>From a80ab4ac151985069f1a00e7cc53d3c2eea76113 Mon Sep 17 00:00:00 2001
From: Shahed Shaikh <shshaikh at marvell.com>
Date: Fri, 18 Jan 2019 02:29:30 -0800
Subject: [PATCH] net/qede: remove prefetch in Tx path

[ upstream commit d6ddd17fb17cb250044bada4ae42a799375fd6c5 ]

Incorrect placement of prefetch in Tx path is causing
a performance drop of around ~2% on AMD platform.

Fixes: 2ea6f76aff40 ("qede: add core driver")

Signed-off-by: Shahed Shaikh <shshaikh at marvell.com>
Acked-by: Rasesh Mody <rmody at marvell.com>
---
 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 b525075ca..7ef76edc3 100644
--- a/drivers/net/qede/qede_rxtx.c
+++ b/drivers/net/qede/qede_rxtx.c
@@ -2182,7 +2182,6 @@ 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
-- 
2.11.0

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2019-03-08 09:46:43.150710636 -0800
+++ 0060-net-qede-remove-prefetch-in-Tx-path.patch	2019-03-08 09:46:40.317403000 -0800
@@ -1,13 +1,14 @@
-From d6ddd17fb17cb250044bada4ae42a799375fd6c5 Mon Sep 17 00:00:00 2001
+From a80ab4ac151985069f1a00e7cc53d3c2eea76113 Mon Sep 17 00:00:00 2001
 From: Shahed Shaikh <shshaikh at marvell.com>
 Date: Fri, 18 Jan 2019 02:29:30 -0800
 Subject: [PATCH] net/qede: remove prefetch in Tx path
 
+[ upstream commit d6ddd17fb17cb250044bada4ae42a799375fd6c5 ]
+
 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 at dpdk.org
 
 Signed-off-by: Shahed Shaikh <shshaikh at marvell.com>
 Acked-by: Rasesh Mody <rmody at marvell.com>
@@ -16,10 +17,10 @@
  1 file changed, 1 deletion(-)
 
 diff --git a/drivers/net/qede/qede_rxtx.c b/drivers/net/qede/qede_rxtx.c
-index 684c4aeef..eda19b2b1 100644
+index b525075ca..7ef76edc3 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)
+@@ -2182,7 +2182,6 @@ 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++;