[dpdk-stable] patch 'event/dsw: remove unnecessary read barrier' has been queued to LTS release 18.11.9

[Kevin Traynor]

Hi,

FYI, your patch has been queued to LTS release 18.11.9

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 06/03/20. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/kevintraynor/dpdk-stable-queue

This queued commit can be viewed at:
https://github.com/kevintraynor/dpdk-stable-queue/commit/5d54a4d7f3bca433243f5eb0a00659d1f0c1a276

Thanks.

Kevin.

---
>From 5d54a4d7f3bca433243f5eb0a00659d1f0c1a276 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mattias=20R=C3=B6nnblom?= <mattias.ronnblom at ericsson.com>
Date: Mon, 9 Mar 2020 07:51:05 +0100
Subject: [PATCH] event/dsw: remove unnecessary read barrier
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

[ upstream commit cea7bc671311e8cf5fbc21dceb15f5f8af8ee36b ]

Remove unnecessary read barrier (and misleading comment) on control
message dequeue.

Fixes: f6257b22e767 ("event/dsw: add load balancing")

Suggested-by: Ola Liljedahl <ola.liljedahl at arm.com>
Signed-off-by: Mattias Rönnblom <mattias.ronnblom at ericsson.com>
---
 drivers/event/dsw/dsw_event.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/event/dsw/dsw_event.c b/drivers/event/dsw/dsw_event.c
index 8ea68cd966..10e44fd497 100644
--- a/drivers/event/dsw/dsw_event.c
+++ b/drivers/event/dsw/dsw_event.c
@@ -931,9 +931,4 @@ dsw_port_ctl_process(struct dsw_evdev *dsw, struct dsw_port *port)
 	struct dsw_ctl_msg msg;
 
-	/* So any table loads happens before the ring dequeue, in the
-	 * case of a 'paus' message.
-	 */
-	rte_smp_rmb();
-
 	if (dsw_port_ctl_dequeue(port, &msg) == 0) {
 		switch (msg.type) {
-- 
2.21.3

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2020-05-28 17:13:00.720379181 +0100
+++ 0030-event-dsw-remove-unnecessary-read-barrier.patch	2020-05-28 17:12:59.090556649 +0100
@@ -1 +1 @@
-From cea7bc671311e8cf5fbc21dceb15f5f8af8ee36b Mon Sep 17 00:00:00 2001
+From 5d54a4d7f3bca433243f5eb0a00659d1f0c1a276 Mon Sep 17 00:00:00 2001
@@ -8,0 +9,2 @@
+[ upstream commit cea7bc671311e8cf5fbc21dceb15f5f8af8ee36b ]
+
@@ -13 +14,0 @@
-Cc: stable at dpdk.org
@@ -22 +23 @@
-index c31a4c492f..94c8efdbcf 100644
+index 8ea68cd966..10e44fd497 100644
@@ -25 +26 @@
-@@ -1066,9 +1066,4 @@ dsw_port_ctl_process(struct dsw_evdev *dsw, struct dsw_port *port)
+@@ -931,9 +931,4 @@ dsw_port_ctl_process(struct dsw_evdev *dsw, struct dsw_port *port)