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{ "id": 630, "url": "http://patches.dpdk.org/api/covers/630/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/cover/20240208181644.455233-1-mattias.ronnblom@ericsson.com/", "project": { "id": 1, "url": "http://patches.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": "<20240208181644.455233-1-mattias.ronnblom@ericsson.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20240208181644.455233-1-mattias.ronnblom@ericsson.com", "date": "2024-02-08T18:16:39", "name": "[RFC,0/5] Lcore variables", "submitter": { "id": 1077, "url": "http://patches.dpdk.org/api/people/1077/?format=api", "name": "Mattias Rönnblom", "email": "mattias.ronnblom@ericsson.com" }, "mbox": "http://patches.dpdk.org/project/dpdk/cover/20240208181644.455233-1-mattias.ronnblom@ericsson.com/mbox/", "series": [ { "id": 31057, "url": "http://patches.dpdk.org/api/series/31057/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=31057", "date": "2024-02-08T18:16:39", "name": "Lcore variables", "version": 1, "mbox": "http://patches.dpdk.org/series/31057/mbox/" } ], "comments": "http://patches.dpdk.org/api/covers/630/comments/", "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 3908A43AE1;\n\tThu, 8 Feb 2024 19:24:50 +0100 (CET)", "from mails.dpdk.org (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id C113D42DF9;\n\tThu, 8 Feb 2024 19:24:49 +0100 (CET)", "from EUR03-AM7-obe.outbound.protection.outlook.com\n (mail-am7eur03on2055.outbound.protection.outlook.com [40.107.105.55])\n by mails.dpdk.org (Postfix) with ESMTP id BA35340273\n for <dev@dpdk.org>; Thu, 8 Feb 2024 19:24:47 +0100 (CET)", "from AS4P250CA0025.EURP250.PROD.OUTLOOK.COM (2603:10a6:20b:5e3::15)\n by DB9PR07MB7915.eurprd07.prod.outlook.com (2603:10a6:10:2a4::6) with\n Microsoft SMTP Server (version=TLS1_2,\n cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7249.39; Thu, 8 Feb\n 2024 18:24:46 +0000", "from AM3PEPF0000A794.eurprd04.prod.outlook.com\n (2603:10a6:20b:5e3:cafe::e0) by AS4P250CA0025.outlook.office365.com\n (2603:10a6:20b:5e3::15) with Microsoft SMTP Server (version=TLS1_2,\n cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7249.36 via Frontend\n Transport; Thu, 8 Feb 2024 18:24:46 +0000", "from oa.msg.ericsson.com (192.176.1.74) by\n AM3PEPF0000A794.mail.protection.outlook.com (10.167.16.123) with Microsoft\n SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id\n 15.20.7249.19 via Frontend Transport; Thu, 8 Feb 2024 18:24:45 +0000", "from seliicinfr00049.seli.gic.ericsson.se (153.88.142.248) by\n smtp-central.internal.ericsson.com (100.87.178.67) with Microsoft SMTP Server\n id 15.2.1258.12; Thu, 8 Feb 2024 19:24:45 +0100", "from breslau.. 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helo=oa.msg.ericsson.com; pr=C", "From": "=?utf-8?q?Mattias_R=C3=B6nnblom?= <mattias.ronnblom@ericsson.com>", "To": "<dev@dpdk.org>", "CC": "<hofors@lysator.liu.se>,\n =?utf-8?q?Morten_Br=C3=B8rup?= <mb@smartsharesystems.com>,\n Stephen Hemminger <stephen@networkplumber.org>, =?utf-8?q?Mattias_R=C3=B6nn?=\n\t=?utf-8?q?blom?= <mattias.ronnblom@ericsson.com>", "Subject": "[RFC 0/5] Lcore variables", "Date": "Thu, 8 Feb 2024 19:16:39 +0100", "Message-ID": "<20240208181644.455233-1-mattias.ronnblom@ericsson.com>", "X-Mailer": "git-send-email 2.34.1", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"UTF-8\"", "Content-Transfer-Encoding": "8bit", "X-EOPAttributedMessage": "0", "X-MS-PublicTrafficType": "Email", "X-MS-TrafficTypeDiagnostic": "AM3PEPF0000A794:EE_|DB9PR07MB7915:EE_", "X-MS-Office365-Filtering-Correlation-Id": "ee02908f-4b94-4512-a528-08dc28d33a32", "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:192.176.1.74; CTRY:SE; LANG:en; SCL:1; SRV:;\n IPV:NLI; SFV:NSPM; H:oa.msg.ericsson.com; PTR:office365.se.ericsson.net;\n CAT:NONE;\n SFS:(13230031)(4636009)(39860400002)(136003)(376002)(396003)(346002)(230922051799003)(451199024)(1800799012)(82310400011)(186009)(64100799003)(36840700001)(40470700004)(46966006)(1076003)(2616005)(107886003)(86362001)(336012)(6266002)(41300700001)(26005)(2906002)(5660300002)(478600001)(316002)(54906003)(70586007)(70206006)(6916009)(4326008)(8936002)(8676002)(36756003)(6666004)(82740400003)(82960400001)(356005)(7636003)(83380400001);\n DIR:OUT; SFP:1101;", "X-OriginatorOrg": "ericsson.com", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "08 Feb 2024 18:24:45.8907 (UTC)", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n ee02908f-4b94-4512-a528-08dc28d33a32", "X-MS-Exchange-CrossTenant-Id": "92e84ceb-fbfd-47ab-be52-080c6b87953f", "X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp": "\n TenantId=92e84ceb-fbfd-47ab-be52-080c6b87953f; Ip=[192.176.1.74];\n Helo=[oa.msg.ericsson.com]", "X-MS-Exchange-CrossTenant-AuthSource": "\n AM3PEPF0000A794.eurprd04.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "DB9PR07MB7915", "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": "This RFC presents a new API <rte_lcore_var.h> for static per-lcore id\ndata allocation.\n\nPlease refer to the <rte_lcore_var.h> API documentation for both a\nrationale for this new API, and a comparison to the alternatives\navailable.\n\nThe adoption of this API would affect many different DPDK modules, but\nthe author updated only a few, mostly to serve as examples in this\nRFC, and to iron out some, but surely not all, wrinkles in the API.\n\nThe question on how to best allocate static per-lcore memory has been\nup several times on the dev mailing list, for example in the thread on\n\"random: use per lcore state\" RFC by Stephen Hemminger.\n\nLcore variables are surely not the answer to all your per-lcore-data\nneeds, since it only allows for more-or-less static allocation. In the\nauthor's opinion, it does however provide a reasonably simple and\nclean and seemingly very much performant solution to a real problem.\n\nOne thing is unclear to the author is how this API relates to\npotential future per-lcore dynamic allocator (e.g., a per-lcore heap).\n\nContrary to what the version.map edit suggests, this RFC is not meant\nfor a proposal for DPDK 24.03.\n\nMattias Rönnblom (5):\n eal: add static per-lcore memory allocation facility\n eal: add lcore variable test suite\n random: keep PRNG state in lcore variable\n power: keep per-lcore state in lcore variable\n service: keep per-lcore state in lcore variable\n\n app/test/meson.build | 1 +\n app/test/test_lcore_var.c | 384 ++++++++++++++++++++++++++\n config/rte_config.h | 1 +\n doc/api/doxy-api-index.md | 1 +\n lib/eal/common/eal_common_lcore_var.c | 80 ++++++\n lib/eal/common/meson.build | 1 +\n lib/eal/common/rte_random.c | 30 +-\n lib/eal/common/rte_service.c | 119 ++++----\n lib/eal/include/meson.build | 1 +\n lib/eal/include/rte_lcore_var.h | 352 +++++++++++++++++++++++\n lib/eal/version.map | 4 +\n lib/power/rte_power_pmd_mgmt.c | 27 +-\n 12 files changed, 925 insertions(+), 76 deletions(-)\n create mode 100644 app/test/test_lcore_var.c\n create mode 100644 lib/eal/common/eal_common_lcore_var.c\n create mode 100644 lib/eal/include/rte_lcore_var.h" }