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{ "id": 683, "url": "http://patches.dpdk.org/api/covers/683/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/cover/20240225150330.517225-1-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": "<20240225150330.517225-1-mattias.ronnblom@ericsson.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20240225150330.517225-1-mattias.ronnblom@ericsson.com", "date": "2024-02-25T15:03:24", "name": "[RFC,v4,0/6] 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/20240225150330.517225-1-mattias.ronnblom@ericsson.com/mbox/", "series": [ { "id": 31210, "url": "http://patches.dpdk.org/api/series/31210/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=31210", "date": "2024-02-25T15:03:24", "name": "Lcore variables", "version": 4, "mbox": "http://patches.dpdk.org/series/31210/mbox/" } ], "comments": "http://patches.dpdk.org/api/covers/683/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 C6E4943BD2;\n\tSun, 25 Feb 2024 16:11:56 +0100 (CET)", "from mails.dpdk.org (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id 3F684402CC;\n\tSun, 25 Feb 2024 16:11:56 +0100 (CET)", "from EUR05-DB8-obe.outbound.protection.outlook.com\n (mail-db8eur05on2050.outbound.protection.outlook.com [40.107.20.50])\n by mails.dpdk.org (Postfix) with ESMTP id 36C1540270\n for <dev@dpdk.org>; Sun, 25 Feb 2024 16:11:54 +0100 (CET)", "from DU2PR04CA0353.eurprd04.prod.outlook.com (2603:10a6:10:2b4::13)\n by AS8PR07MB7525.eurprd07.prod.outlook.com (2603:10a6:20b:2ae::24)\n with Microsoft SMTP Server (version=TLS1_2,\n cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7316.29; Sun, 25 Feb\n 2024 15:11:52 +0000", "from DB1PEPF00039232.eurprd03.prod.outlook.com\n (2603:10a6:10:2b4:cafe::b6) by DU2PR04CA0353.outlook.office365.com\n (2603:10a6:10:2b4::13) with Microsoft SMTP Server (version=TLS1_2,\n cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7292.49 via Frontend\n Transport; Sun, 25 Feb 2024 15:11:52 +0000", "from oa.msg.ericsson.com (192.176.1.74) by\n DB1PEPF00039232.mail.protection.outlook.com (10.167.8.105) with Microsoft\n SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id\n 15.20.7292.25 via Frontend Transport; Sun, 25 Feb 2024 15:11:52 +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; Sun, 25 Feb 2024 16:11:51 +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 v4 0/6] Lcore variables", "Date": "Sun, 25 Feb 2024 16:03:24 +0100", "Message-ID": "<20240225150330.517225-1-mattias.ronnblom@ericsson.com>", "X-Mailer": "git-send-email 2.34.1", "In-Reply-To": "<20240220084908.488252-2-mattias.ronnblom@ericsson.com>", "References": "<20240220084908.488252-2-mattias.ronnblom@ericsson.com>", "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": "DB1PEPF00039232:EE_|AS8PR07MB7525:EE_", "X-MS-Office365-Filtering-Correlation-Id": "d2e4dd8c-19dc-4ca5-6ef2-08dc361418e1", "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; SFS:(13230031)(36860700004)(46966006)(40470700004); DIR:OUT;\n SFP:1101;", "X-OriginatorOrg": "ericsson.com", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "25 Feb 2024 15:11:52.3659 (UTC)", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n d2e4dd8c-19dc-4ca5-6ef2-08dc361418e1", "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 DB1PEPF00039232.eurprd03.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "AS8PR07MB7525", "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 (6):\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 eal: keep per-lcore power intrinsics state in lcore variable\n\n app/test/meson.build | 1 +\n app/test/test_lcore_var.c | 439 ++++++++++++++++++++++++++\n config/rte_config.h | 1 +\n doc/api/doxy-api-index.md | 1 +\n lib/eal/common/eal_common_lcore_var.c | 68 ++++\n lib/eal/common/meson.build | 1 +\n lib/eal/common/rte_random.c | 30 +-\n lib/eal/common/rte_service.c | 120 ++++---\n lib/eal/include/meson.build | 1 +\n lib/eal/include/rte_lcore_var.h | 375 ++++++++++++++++++++++\n lib/eal/version.map | 4 +\n lib/eal/x86/rte_power_intrinsics.c | 17 +-\n lib/power/rte_power_pmd_mgmt.c | 36 +--\n 13 files changed, 1006 insertions(+), 88 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" }