patch 'baseband/acc: fix memory barrier' has been queued to stable release 23.11.2

[Xueming Li <xuemingl@nvidia.com>]

Hi,

FYI, your patch has been queued to stable release 23.11.2

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 07/14/24. 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://git.dpdk.org/dpdk-stable/log/?h=23.11-staging

This queued commit can be viewed at:
https://git.dpdk.org/dpdk-stable/commit/?h=23.11-staging&id=0ab5bf3a37e66ef3a049a53c27865282a39c8d3c

Thanks.

Xueming Li <xuemingl@nvidia.com>

---
From 0ab5bf3a37e66ef3a049a53c27865282a39c8d3c Mon Sep 17 00:00:00 2001
From: Hernan Vargas <hernan.vargas@intel.com>
Date: Thu, 2 May 2024 13:45:44 -0700
Subject: [PATCH] baseband/acc: fix memory barrier
Cc: Xueming Li <xuemingl@nvidia.com>

[ upstream commit 0a200a3a29017f6b01a481776a571a75e03a32ce ]

Moving memory barrier so that dequeue thread can be in sync with enqueue
thread.

Fixes: 32e8b7ea35dd ("baseband/acc100: refactor to segregate common code")

Signed-off-by: Hernan Vargas <hernan.vargas@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
 drivers/baseband/acc/acc_common.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/baseband/acc/acc_common.h b/drivers/baseband/acc/acc_common.h
index bda2ad2f7a..6752c256d2 100644
--- a/drivers/baseband/acc/acc_common.h
+++ b/drivers/baseband/acc/acc_common.h
@@ -1110,6 +1110,9 @@ acc_dma_enqueue(struct acc_queue *q, uint16_t n,
 				req_elem_addr,
 				(void *)q->mmio_reg_enqueue);
 
+		q->aq_enqueued++;
+		q->sw_ring_head += enq_batch_size;
+
 		rte_wmb();
 
 		/* Start time measurement for enqueue function offload. */
@@ -1120,8 +1123,6 @@ acc_dma_enqueue(struct acc_queue *q, uint16_t n,
 
 		queue_stats->acc_offload_cycles += rte_rdtsc_precise() - start_time;
 
-		q->aq_enqueued++;
-		q->sw_ring_head += enq_batch_size;
 		n -= enq_batch_size;
 
 	} while (n);
-- 
2.34.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2024-07-12 18:40:16.798500604 +0800
+++ 0057-baseband-acc-fix-memory-barrier.patch	2024-07-12 18:40:14.116594226 +0800
@@ -1 +1 @@
-From 0a200a3a29017f6b01a481776a571a75e03a32ce Mon Sep 17 00:00:00 2001
+From 0ab5bf3a37e66ef3a049a53c27865282a39c8d3c Mon Sep 17 00:00:00 2001
@@ -4,0 +5,3 @@
+Cc: Xueming Li <xuemingl@nvidia.com>
+
+[ upstream commit 0a200a3a29017f6b01a481776a571a75e03a32ce ]
@@ -10 +12,0 @@
-Cc: stable@dpdk.org
@@ -19 +21 @@
-index fddeb0737b..e249f37e38 100644
+index bda2ad2f7a..6752c256d2 100644
@@ -22 +24 @@
-@@ -1112,6 +1112,9 @@ acc_dma_enqueue(struct acc_queue *q, uint16_t n,
+@@ -1110,6 +1110,9 @@ acc_dma_enqueue(struct acc_queue *q, uint16_t n,
@@ -32 +34 @@
-@@ -1122,8 +1125,6 @@ acc_dma_enqueue(struct acc_queue *q, uint16_t n,
+@@ -1120,8 +1123,6 @@ acc_dma_enqueue(struct acc_queue *q, uint16_t n,