From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 07E87C43334 for ; Mon, 18 Jul 2022 12:43:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235103AbiGRMnm (ORCPT ); Mon, 18 Jul 2022 08:43:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34648 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235110AbiGRMnk (ORCPT ); Mon, 18 Jul 2022 08:43:40 -0400 Received: from NAM02-DM3-obe.outbound.protection.outlook.com (mail-dm3nam02on2079.outbound.protection.outlook.com [40.107.95.79]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 07B0925E8B; Mon, 18 Jul 2022 05:43:37 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=e5/8LYFhiE4VqoPGntoKQiiVi5TJpJH+1olUDcfIHd2HvokbFRcxPLEMqCoKMbDaxLEBE8bHZt1VPSvlGphiGaAXLIoUupn92tbAK067TViYj3WEEhwvHWeOaJRYE9BqQXKhVXedc72eqOLw1Gv94P0yYQs2exbUyyKJv8gn690c/jdJ7cO5cu3o5aT+MjGLWhstoyylcGKsQ/DG64iKL7npwlsAaqix+X8qd0AqV6ZR+2UTHWn3CcGrjGD95HOCvLBmntFPdvx9IGQJtMb/Nf21dG1psdEu1YNwGua0h3X7R7wXAQrUh6QsDCh8j3szqhwKdEP4L9L8sjo0v8vlsA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=3pDxbNSMJ1JHqjFo+SYG1t/Dyoh8FZFx/pgzdCCPx58=; b=CbzFl6HvA2RPozQlxJahjv7pOKzwlgPu70quGKqD4GBHHrYVxLSF8FSKfeuTBvzx9NSMFWXyTnsiY0vMtgmK4268dmEUv+DHU1IXg9dN997lpKbwKAlLAZPfl66PG+STw1EjTkW5bzmvr0Twp6Oy/njLhyqEpG/U1hvr+Z6LHbr4QVA7xNKLd/XvVKrWRd+rEIH03GKJsOwKpJwZnkB0lvubx8FvHpyfIS4dV2lUJWW+xXyo7O4YKPTfRyA+/8apcw9hUeepV6mTnoSxCOUKnaH+Y2+VvcuCoUk9QIhQg5/Z3UAf5t4kbHBik6itZr6rUxAjGnqdwFAx5UQAIoPshA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 12.22.5.238) smtp.rcpttodomain=redhat.com smtp.mailfrom=nvidia.com; dmarc=pass (p=reject sp=reject pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=3pDxbNSMJ1JHqjFo+SYG1t/Dyoh8FZFx/pgzdCCPx58=; b=oJ/kywylFATAJlEJl2MsS5YckcgcH/yGVsecPx45Vs6H4VB7igcl9GMuz477rFBxwkft3sRmHzgmwpPW2Tb0eUzfTx1w1+f+1JFCD4CC06KvDBI6SNE4YSfUrItK/T0qlthbADiyGlq0o90k5MAceQe2xqCEpCHuWzoI+XdWc1A+lDPJ/yEU04k/vLom35XRnaRXP+HEFPer90g0q67WrBfVStNryOMUPrXZFORR9oWnPq8jI9UKg3UfCBJRAGdqhTjnE+B2kiOHhi3BAqKRi6QS3lm8q7oahxtFu0gdjsC3Ns4kyRA1BHTsxfFRe9w87G7bA0hyWICyxSQ6ag8dOw== Received: from BN9PR03CA0944.namprd03.prod.outlook.com (2603:10b6:408:108::19) by BN6PR1201MB0003.namprd12.prod.outlook.com (2603:10b6:404:b2::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5438.12; Mon, 18 Jul 2022 12:43:34 +0000 Received: from BN8NAM11FT046.eop-nam11.prod.protection.outlook.com (2603:10b6:408:108:cafe::62) by BN9PR03CA0944.outlook.office365.com (2603:10b6:408:108::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5438.17 via Frontend Transport; Mon, 18 Jul 2022 12:43:34 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 12.22.5.238) smtp.mailfrom=nvidia.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 12.22.5.238 as permitted sender) receiver=protection.outlook.com; client-ip=12.22.5.238; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (12.22.5.238) by BN8NAM11FT046.mail.protection.outlook.com (10.13.177.127) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.5438.12 via Frontend Transport; Mon, 18 Jul 2022 12:43:34 +0000 Received: from drhqmail201.nvidia.com (10.126.190.180) by DRHQMAIL105.nvidia.com (10.27.9.14) with Microsoft SMTP Server (TLS) id 15.0.1497.32; Mon, 18 Jul 2022 12:43:33 +0000 Received: from drhqmail202.nvidia.com (10.126.190.181) by drhqmail201.nvidia.com (10.126.190.180) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.26; Mon, 18 Jul 2022 05:43:32 -0700 Received: from vdi.nvidia.com (10.127.8.14) by mail.nvidia.com (10.126.190.181) with Microsoft SMTP Server id 15.2.986.26 via Frontend Transport; Mon, 18 Jul 2022 05:43:28 -0700 From: Tariq Toukan To: "David S. Miller" , Saeed Mahameed , Jakub Kicinski , Ingo Molnar , Peter Zijlstra , Juri Lelli CC: Eric Dumazet , Paolo Abeni , , Gal Pressman , Vincent Guittot , , Tariq Toukan Subject: [PATCH net-next V2 1/2] sched/topology: Expose sched_numa_find_closest Date: Mon, 18 Jul 2022 15:43:14 +0300 Message-ID: <20220718124315.16648-2-tariqt@nvidia.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20220718124315.16648-1-tariqt@nvidia.com> References: <20220718124315.16648-1-tariqt@nvidia.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 9814c1d4-e719-415a-ae46-08da68bb20c1 X-MS-TrafficTypeDiagnostic: BN6PR1201MB0003:EE_ X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:12.22.5.238;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:InfoNoRecords;CAT:NONE;SFS:(13230016)(4636009)(376002)(346002)(396003)(136003)(39860400002)(46966006)(36840700001)(40470700004)(70586007)(7416002)(4326008)(8936002)(5660300002)(70206006)(82310400005)(40460700003)(40480700001)(54906003)(8676002)(26005)(86362001)(2906002)(36860700001)(1076003)(356005)(82740400003)(83380400001)(81166007)(478600001)(47076005)(186003)(107886003)(316002)(110136005)(426003)(336012)(41300700001)(2616005)(6666004)(7696005)(36756003)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Jul 2022 12:43:34.2208 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 9814c1d4-e719-415a-ae46-08da68bb20c1 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[12.22.5.238];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT046.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR1201MB0003 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This logic can help device drivers prefer some remote cpus over others, according to the NUMA distance metrics. Reviewed-by: Gal Pressman Signed-off-by: Tariq Toukan --- include/linux/sched/topology.h | 2 ++ kernel/sched/topology.c | 1 + 2 files changed, 3 insertions(+) v2: Replaced EXPORT_SYMBOL with EXPORT_SYMBOL_GPL, per Peter's comment. diff --git a/include/linux/sched/topology.h b/include/linux/sched/topology.h index 56cffe42abbc..d467c30bdbb9 100644 --- a/include/linux/sched/topology.h +++ b/include/linux/sched/topology.h @@ -61,6 +61,8 @@ static inline int cpu_numa_flags(void) { return SD_NUMA; } + +int sched_numa_find_closest(const struct cpumask *cpus, int cpu); #endif extern int arch_asym_cpu_priority(int cpu); diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c index 05b6c2ad90b9..274fb2bd3849 100644 --- a/kernel/sched/topology.c +++ b/kernel/sched/topology.c @@ -2066,6 +2066,7 @@ int sched_numa_find_closest(const struct cpumask *cpus, int cpu) return found; } +EXPORT_SYMBOL_GPL(sched_numa_find_closest); #endif /* CONFIG_NUMA */ -- 2.21.0