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From: Feifei Wang <feifei.wang2@arm.com>
To: Matan Azrad <matan@nvidia.com>,
	Shahaf Shuler <shahafs@nvidia.com>,
	Viacheslav Ovsiienko <viacheslavo@nvidia.com>
Cc: dev@dpdk.org, nd@arm.com, Feifei Wang <feifei.wang2@arm.com>,
	Ruifeng Wang <ruifeng.wang@arm.com>,
	Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>
Subject: [dpdk-dev] [PATCH v1 4/4] net/mlx5: replace SMP barriers with C11 barriers
Date: Thu, 18 Mar 2021 15:18:40 +0800
Message-ID: <20210318071840.359957-5-feifei.wang2@arm.com> (raw)
In-Reply-To: <20210318071840.359957-1-feifei.wang2@arm.com>

Replace SMP barrier with atomic thread fence.

Signed-off-by: Feifei Wang <feifei.wang2@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
Reviewed-by: Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>
---
 drivers/net/mlx5/mlx5_mr.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_mr.c b/drivers/net/mlx5/mlx5_mr.c
index 7ce1d3e64..650fe9093 100644
--- a/drivers/net/mlx5/mlx5_mr.c
+++ b/drivers/net/mlx5/mlx5_mr.c
@@ -109,11 +109,11 @@ mlx5_mr_mem_event_free_cb(struct mlx5_dev_ctx_shared *sh,
 
 		/*
 		 * Flush local caches by propagating invalidation across cores.
-		 * rte_smp_wmb() is to keep the order that dev_gen updated before
+		 * release-fence is to keep the order that dev_gen updated before
 		 * rebuilding global cache. Therefore, other core can flush their
 		 * local cache on time.
 		 */
-		rte_smp_wmb();
+		rte_atomic_thread_fence(__ATOMIC_RELEASE);
 		mlx5_mr_rebuild_cache(&sh->share_cache);
 	}
 	rte_rwlock_write_unlock(&sh->share_cache.rwlock);
@@ -412,11 +412,11 @@ mlx5_dma_unmap(struct rte_pci_device *pdev, void *addr,
 
 	/*
 	 * Flush local caches by propagating invalidation across cores.
-	 * rte_smp_wmb() is to keep the order that dev_gen updated before
+	 * release-fence is to keep the order that dev_gen updated before
 	 * rebuilding global cache. Therefore, other core can flush their
 	 * local cache on time.
 	 */
-	rte_smp_wmb();
+	rte_atomic_thread_fence(__ATOMIC_RELEASE);
 	mlx5_mr_rebuild_cache(&sh->share_cache);
 	rte_rwlock_read_unlock(&sh->share_cache.rwlock);
 	return 0;
-- 
2.25.1


  parent reply	other threads:[~2021-03-18  7:19 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-18  7:18 [dpdk-dev] [PATCH v1 0/4] refactor SMP barriers for net/mlx Feifei Wang
2021-03-18  7:18 ` [dpdk-dev] [PATCH v1 1/4] net/mlx4: fix rebuild bug for Memory Region cache Feifei Wang
2021-03-18  7:18 ` [dpdk-dev] [PATCH v1 2/4] net/mlx4: replace SMP barrier with C11 barriers Feifei Wang
2021-03-18  7:18 ` [dpdk-dev] [PATCH v1 3/4] net/mlx5: fix rebuild bug for Memory Region cache Feifei Wang
2021-04-12  8:27   ` Slava Ovsiienko
2021-04-13  5:20     ` [dpdk-dev] 回复: " Feifei Wang
2021-04-19 18:50       ` [dpdk-dev] " Slava Ovsiienko
2021-04-20  5:53         ` [dpdk-dev] 回复: " Feifei Wang
2021-04-20  7:29           ` Feifei Wang
2021-04-20  7:53             ` [dpdk-dev] " Slava Ovsiienko
2021-04-20  8:42               ` [dpdk-dev] 回复: " Feifei Wang
2021-05-06  2:52                 ` Feifei Wang
2021-05-06 11:21                   ` [dpdk-dev] " Slava Ovsiienko
2021-05-07  6:36                     ` [dpdk-dev] 回复: " Feifei Wang
2021-05-07 10:14                       ` [dpdk-dev] " Slava Ovsiienko
2021-05-08  3:13                         ` [dpdk-dev] 回复: " Feifei Wang
2021-05-11  8:18                           ` [dpdk-dev] " Slava Ovsiienko
2021-05-12  5:34                             ` [dpdk-dev] 回复: " Feifei Wang
2021-05-12 11:07                               ` [dpdk-dev] " Slava Ovsiienko
2021-05-13  5:49                                 ` [dpdk-dev] 回复: " Feifei Wang
2021-05-13 10:49                                   ` [dpdk-dev] " Slava Ovsiienko
2021-05-14  5:18                                     ` [dpdk-dev] 回复: " Feifei Wang
2021-03-18  7:18 ` Feifei Wang [this message]
2021-04-07  1:45 ` [dpdk-dev] [PATCH v1 0/4] refactor SMP barriers for net/mlx Alexander Kozyrev
2021-05-17 10:00 ` [dpdk-dev] [PATCH v2 0/2] remove wmb " Feifei Wang
2021-05-17 10:00   ` [dpdk-dev] [PATCH v2 1/2] net/mlx4: remove unnecessary wmb for Memory Region cache Feifei Wang
2021-05-17 10:00   ` [dpdk-dev] [PATCH v2 2/2] net/mlx5: " Feifei Wang
2021-05-17 14:15     ` Slava Ovsiienko
2021-05-18  8:52       ` [dpdk-dev] 回复: " Feifei Wang
2021-05-18  8:50 ` [dpdk-dev] [PATCH v3 0/2] remove wmb for net/mlx Feifei Wang
2021-05-18  8:50   ` [dpdk-dev] [PATCH v3 1/2] net/mlx4: remove unnecessary wmb for Memory Region cache Feifei Wang
2021-05-18 12:13     ` Slava Ovsiienko
2021-05-18  8:50   ` [dpdk-dev] [PATCH v3 2/2] net/mlx5: " Feifei Wang
2021-05-18 10:17     ` Slava Ovsiienko
2021-05-19  1:54       ` [dpdk-dev] 回复: " Feifei Wang
2021-05-27  8:37   ` [dpdk-dev] [PATCH v3 0/2] remove wmb for net/mlx Raslan Darawsheh

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