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From: Tyler Retzlaff <roretzla@linux.microsoft.com>
To: dev@dpdk.org
Cc: Honnappa.Nagarahalli@arm.com, thomas@monjalon.net,
	bruce.richardson@intel.com, mb@smartsharesystems.com,
	Ruifeng.Wang@arm.com, maxime.coquelin@redhat.com,
	Tyler Retzlaff <roretzla@linux.microsoft.com>
Subject: [PATCH v2 06/17] bbdev: use previous value atomic fetch operations
Date: Thu,  2 Mar 2023 08:18:11 -0800	[thread overview]
Message-ID: <1677773902-5167-7-git-send-email-roretzla@linux.microsoft.com> (raw)
In-Reply-To: <1677773902-5167-1-git-send-email-roretzla@linux.microsoft.com>

Use __atomic_fetch_{add,and,or,sub,xor} instead of
__atomic_{add,and,or,sub,xor}_fetch when we have no interest in the
result of the operation.

Reduces unnecessary codegen that provided the result of the atomic
operation that was not used.

Change brings closer alignment with atomics available in C11 standard
and will reduce review effort when they are integrated.

Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
Acked-by: Morten Brørup <mb@smartsharesystems.com>
---
 lib/bbdev/rte_bbdev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/bbdev/rte_bbdev.c b/lib/bbdev/rte_bbdev.c
index 1521cdb..69e099d 100644
--- a/lib/bbdev/rte_bbdev.c
+++ b/lib/bbdev/rte_bbdev.c
@@ -208,7 +208,7 @@ struct rte_bbdev *
 		return NULL;
 	}
 
-	__atomic_add_fetch(&bbdev->data->process_cnt, 1, __ATOMIC_RELAXED);
+	__atomic_fetch_add(&bbdev->data->process_cnt, 1, __ATOMIC_RELAXED);
 	bbdev->data->dev_id = dev_id;
 	bbdev->state = RTE_BBDEV_INITIALIZED;
 
-- 
1.8.3.1


  parent reply	other threads:[~2023-03-02 16:19 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-02  0:47 [PATCH 00/17] use __atomic operations returning previous value Tyler Retzlaff
2023-03-02  0:47 ` [PATCH 01/17] vhost: use previous value atomic fetch operations Tyler Retzlaff
2023-03-02 14:47   ` Maxime Coquelin
2023-03-02  0:47 ` [PATCH 02/17] telemetry: " Tyler Retzlaff
2023-03-02  9:34   ` Bruce Richardson
2023-03-02  0:47 ` [PATCH 03/17] stack: " Tyler Retzlaff
2023-03-02  0:47 ` [PATCH 04/17] eal: " Tyler Retzlaff
2023-03-02  0:47 ` [PATCH 05/17] distributor: " Tyler Retzlaff
2023-03-02  0:47 ` [PATCH 06/17] bbdev: " Tyler Retzlaff
2023-03-02  0:47 ` [PATCH 07/17] examples/vhost: " Tyler Retzlaff
2023-03-02 14:47   ` Maxime Coquelin
2023-03-02  0:47 ` [PATCH 08/17] net/virtio: " Tyler Retzlaff
2023-03-02 14:48   ` Maxime Coquelin
2023-03-02  0:47 ` [PATCH 09/17] net/octeontx: " Tyler Retzlaff
2023-03-02  0:47 ` [PATCH 10/17] net/mlx5: " Tyler Retzlaff
2023-03-02  0:47 ` [PATCH 11/17] net/iavf: " Tyler Retzlaff
2023-03-02  9:28   ` Ruifeng Wang
2023-03-02 15:50     ` Tyler Retzlaff
2023-03-02  0:47 ` [PATCH 12/17] net/cxgbe: " Tyler Retzlaff
2023-03-02  0:47 ` [PATCH 13/17] drivers/event: " Tyler Retzlaff
2023-03-02  0:47 ` [PATCH 14/17] dma/skeleton: " Tyler Retzlaff
2023-03-02  0:47 ` [PATCH 15/17] drivers/common: " Tyler Retzlaff
2023-03-02  0:47 ` [PATCH 16/17] app/test: " Tyler Retzlaff
2023-03-02  0:47 ` [PATCH 17/17] test-eventdev: " Tyler Retzlaff
2023-03-02 14:40 ` [PATCH 00/17] use __atomic operations returning previous value Morten Brørup
2023-03-02 16:18 ` [PATCH v2 " Tyler Retzlaff
2023-03-02 16:18   ` [PATCH v2 01/17] vhost: use previous value atomic fetch operations Tyler Retzlaff
2023-03-02 16:18   ` [PATCH v2 02/17] telemetry: " Tyler Retzlaff
2023-03-02 16:18   ` [PATCH v2 03/17] stack: " Tyler Retzlaff
2023-03-02 16:18   ` [PATCH v2 04/17] eal: " Tyler Retzlaff
2023-03-02 16:18   ` [PATCH v2 05/17] distributor: " Tyler Retzlaff
2023-03-02 16:18   ` Tyler Retzlaff [this message]
2023-03-02 16:18   ` [PATCH v2 07/17] examples/vhost: " Tyler Retzlaff
2023-03-02 16:18   ` [PATCH v2 08/17] net/virtio: " Tyler Retzlaff
2023-03-02 16:18   ` [PATCH v2 09/17] net/octeontx: " Tyler Retzlaff
2023-03-02 16:18   ` [PATCH v2 10/17] net/mlx5: " Tyler Retzlaff
2023-03-02 16:18   ` [PATCH v2 11/17] net/iavf: " Tyler Retzlaff
2023-03-02 16:18   ` [PATCH v2 12/17] net/cxgbe: " Tyler Retzlaff
2023-03-02 16:18   ` [PATCH v2 13/17] drivers/event: " Tyler Retzlaff
2023-03-13  7:02     ` [EXT] " Pavan Nikhilesh Bhagavatula
2023-03-02 16:18   ` [PATCH v2 14/17] dma/skeleton: " Tyler Retzlaff
2023-03-02 16:18   ` [PATCH v2 15/17] drivers/common: " Tyler Retzlaff
2023-03-02 16:18   ` [PATCH v2 16/17] app/test: " Tyler Retzlaff
2023-03-02 16:18   ` [PATCH v2 17/17] test-eventdev: " Tyler Retzlaff
2023-03-03  1:54   ` [PATCH v2 00/17] use __atomic operations returning previous value Ruifeng Wang
2023-03-03  2:33   ` fengchengwen
2023-04-25  9:10   ` David Marchand

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