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GET /api/patches/104704/?format=api
{ "id": 104704, "url": "http://patchwork.dpdk.org/api/patches/104704/?format=api", "web_url": "http://patchwork.dpdk.org/project/dpdk/patch/20211125224054.26157-1-eagostini@nvidia.com/", "project": { "id": 1, "url": "http://patchwork.dpdk.org/api/projects/1/?format=api", "name": "DPDK", "link_name": "dpdk", "list_id": "dev.dpdk.org", "list_email": "dev@dpdk.org", "web_url": "http://core.dpdk.org", "scm_url": "git://dpdk.org/dpdk", "webscm_url": "http://git.dpdk.org/dpdk", "list_archive_url": "https://inbox.dpdk.org/dev", "list_archive_url_format": "https://inbox.dpdk.org/dev/{}", "commit_url_format": "" }, "msgid": "<20211125224054.26157-1-eagostini@nvidia.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20211125224054.26157-1-eagostini@nvidia.com", "date": "2021-11-25T22:40:54", "name": "[v1] gpudev: remove unnecessary rte_gpu_wmb", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": true, "hash": "a39090ddeca4194787bf558bb1cbb0454fd69f83", "submitter": { "id": 1571, "url": "http://patchwork.dpdk.org/api/people/1571/?format=api", "name": "Elena Agostini", "email": "eagostini@nvidia.com" }, "delegate": { "id": 1, "url": "http://patchwork.dpdk.org/api/users/1/?format=api", "username": "tmonjalo", "first_name": "Thomas", "last_name": "Monjalon", "email": "thomas@monjalon.net" }, "mbox": "http://patchwork.dpdk.org/project/dpdk/patch/20211125224054.26157-1-eagostini@nvidia.com/mbox/", "series": [ { "id": 20779, "url": "http://patchwork.dpdk.org/api/series/20779/?format=api", "web_url": "http://patchwork.dpdk.org/project/dpdk/list/?series=20779", "date": "2021-11-25T22:40:54", "name": "[v1] gpudev: remove unnecessary rte_gpu_wmb", "version": 1, "mbox": "http://patchwork.dpdk.org/series/20779/mbox/" } ], "comments": "http://patchwork.dpdk.org/api/patches/104704/comments/", "check": "fail", "checks": "http://patchwork.dpdk.org/api/patches/104704/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@inbox.dpdk.org", "Delivered-To": "patchwork@inbox.dpdk.org", "Received": [ "from mails.dpdk.org (mails.dpdk.org [217.70.189.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id AF15FA0C45;\n\tThu, 25 Nov 2021 15:30:38 +0100 (CET)", "from [217.70.189.124] (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id 64A494270A;\n\tThu, 25 Nov 2021 15:30:38 +0100 (CET)", "from NAM10-BN7-obe.outbound.protection.outlook.com\n (mail-bn7nam10on2085.outbound.protection.outlook.com [40.107.92.85])\n by mails.dpdk.org (Postfix) with ESMTP id 4FE5542708\n for <dev@dpdk.org>; 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helo=mail.nvidia.com;", "From": "<eagostini@nvidia.com>", "To": "<dev@dpdk.org>", "CC": "Elena Agostini <eagostini@nvidia.com>", "Subject": "[PATCH v1] gpudev: remove unnecessary rte_gpu_wmb", "Date": "Thu, 25 Nov 2021 22:40:54 +0000", "Message-ID": "<20211125224054.26157-1-eagostini@nvidia.com>", "X-Mailer": "git-send-email 2.17.1", "MIME-Version": "1.0", "Content-Type": "text/plain", "X-Originating-IP": "[172.20.187.5]", "X-ClientProxiedBy": "HQMAIL105.nvidia.com (172.20.187.12) To\n HQMAIL107.nvidia.com (172.20.187.13)", "X-EOPAttributedMessage": "0", "X-MS-PublicTrafficType": "Email", "X-MS-Office365-Filtering-Correlation-Id": "69b9b269-82f3-43d6-401c-08d9b0202426", "X-MS-TrafficTypeDiagnostic": "DM6PR12MB4531:", "X-Microsoft-Antispam-PRVS": "\n <DM6PR12MB4531F3B877FF5B606779F6F3CD629@DM6PR12MB4531.namprd12.prod.outlook.com>", "X-MS-Oob-TLC-OOBClassifiers": "OLM:4714;", "X-MS-Exchange-SenderADCheck": "1", "X-MS-Exchange-AntiSpam-Relay": "0", "X-Microsoft-Antispam": "BCL:0;", "X-Microsoft-Antispam-Message-Info": "\n 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", "X-Forefront-Antispam-Report": "CIP:216.228.112.34; CTRY:US; LANG:en; SCL:1;\n SRV:;\n IPV:NLI; SFV:NSPM; H:mail.nvidia.com; PTR:schybrid03.nvidia.com; CAT:NONE;\n SFS:(4636009)(46966006)(36840700001)(2616005)(70206006)(55016003)(82310400004)(70586007)(36860700001)(316002)(8936002)(7636003)(356005)(2906002)(47076005)(2876002)(4326008)(426003)(6916009)(7696005)(336012)(6666004)(1076003)(26005)(186003)(8676002)(16526019)(86362001)(107886003)(5660300002)(4744005)(508600001)(36756003)(6286002)(83380400001);\n DIR:OUT; SFP:1101;", "X-OriginatorOrg": "Nvidia.com", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "25 Nov 2021 14:30:34.0495 (UTC)", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n 69b9b269-82f3-43d6-401c-08d9b0202426", "X-MS-Exchange-CrossTenant-Id": "43083d15-7273-40c1-b7db-39efd9ccc17a", "X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp": "\n TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.112.34];\n Helo=[mail.nvidia.com]", "X-MS-Exchange-CrossTenant-AuthSource": "\n CO1NAM11FT063.eop-nam11.prod.protection.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "DM6PR12MB4531", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "DPDK patches and discussions <dev.dpdk.org>", "List-Unsubscribe": "<https://mails.dpdk.org/options/dev>,\n <mailto:dev-request@dpdk.org?subject=unsubscribe>", "List-Archive": "<http://mails.dpdk.org/archives/dev/>", "List-Post": "<mailto:dev@dpdk.org>", "List-Help": "<mailto:dev-request@dpdk.org?subject=help>", "List-Subscribe": "<https://mails.dpdk.org/listinfo/dev>,\n <mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org" }, "content": "From: Elena Agostini <eagostini@nvidia.com>\n\nRemove unnecessary rte_gpu_wmb from rte_gpu_comm_populate_list_pkts.\nIt causes a performance degradation in case of NVIDIA GPU V100.\n\nThis change doesn't affect any functionality as the status resides\nin CPU registered memory.\n\nFixes: c7ebd65c1372 (\"gpudev: add communication list\")\n\nSigned-off-by: Elena Agostini <eagostini@nvidia.com>\n---\n lib/gpudev/gpudev.c | 1 -\n 1 file changed, 1 deletion(-)", "diff": "diff --git a/lib/gpudev/gpudev.c b/lib/gpudev/gpudev.c\nindex 1d8200e71b..9ae36dbae9 100644\n--- a/lib/gpudev/gpudev.c\n+++ b/lib/gpudev/gpudev.c\n@@ -877,7 +877,6 @@ rte_gpu_comm_populate_list_pkts(struct rte_gpu_comm_list *comm_list_item,\n \tRTE_GPU_VOLATILE(comm_list_item->num_pkts) = num_mbufs;\n \trte_gpu_wmb(comm_list_item->dev_id);\n \tRTE_GPU_VOLATILE(comm_list_item->status) = RTE_GPU_COMM_LIST_READY;\n-\trte_gpu_wmb(comm_list_item->dev_id);\n \n \treturn 0;\n }\n", "prefixes": [ "v1" ] }