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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9ECEECCFA1A for ; Mon, 10 Nov 2025 05:25:13 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 0F6AF8E0008; Mon, 10 Nov 2025 00:25:13 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 0A6BD8E0002; Mon, 10 Nov 2025 00:25:13 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id EB0E68E0008; Mon, 10 Nov 2025 00:25:12 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id D4D958E0002 for ; Mon, 10 Nov 2025 00:25:12 -0500 (EST) Received: from smtpin26.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay05.hostedemail.com (Postfix) with ESMTP id 85AEF5CD12 for ; Mon, 10 Nov 2025 05:25:12 +0000 (UTC) X-FDA: 84093558864.26.9EE0818 Received: from PH7PR06CU001.outbound.protection.outlook.com (mail-westus3azon11010055.outbound.protection.outlook.com [52.101.201.55]) by imf20.hostedemail.com (Postfix) with ESMTP id 8F39F1C0005 for ; Mon, 10 Nov 2025 05:25:09 +0000 (UTC) Authentication-Results: imf20.hostedemail.com; dkim=pass header.d=amd.com header.s=selector1 header.b=nH+ueapD; dmarc=pass (policy=quarantine) header.from=amd.com; spf=pass (imf20.hostedemail.com: domain of bharata@amd.com designates 52.101.201.55 as permitted sender) smtp.mailfrom=bharata@amd.com; arc=pass ("microsoft.com:s=arcselector10001:i=1") ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1762752309; a=rsa-sha256; cv=pass; b=WeixKrAzqkXOQW3EWUI8QEbqtylRq26lYzm5u+/W5eNIkWu7fj3poAIhBX7/yzUTnOBwgr FYQfBPC1ssE836An1p5yDfKM2u/1qBSQ5VwkLBVX4Lt1ajfAWIjqEAgbZ10/TCWEJ8cqho E/7zILtswnlRLMUvlmjLIYsI5Bm4fOQ= ARC-Authentication-Results: i=2; imf20.hostedemail.com; dkim=pass header.d=amd.com header.s=selector1 header.b=nH+ueapD; dmarc=pass (policy=quarantine) header.from=amd.com; spf=pass (imf20.hostedemail.com: domain of bharata@amd.com designates 52.101.201.55 as permitted sender) smtp.mailfrom=bharata@amd.com; arc=pass ("microsoft.com:s=arcselector10001:i=1") ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1762752309; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=XSlsZqPpQhjSCl1AN3kFWhBrwlT/ll2LHD4n/2ZWo6A=; b=8KiSrrxtHAgPztOVsG73BL9RJZok/I9ntjx4T1blQ8WjdHGj2azFNnlsnCk6mrnns8plgA nibwoidul0ZHNeDu2yGzLkpnZO6tulM5LNUMHdHQyOJMet52Jy6z+zDNwhIICJFJ9cNs6o pzbxFeTCbYEJXtA0aif8eQVilNjTtFQ= ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=Ti0RQv+JbTuPZQSfdauqeuh/l14xOU6LppwTy+1BeBsnH0ae7YQ69wTuamjR9rUkVG+/6jPl6D2GmrWDcyes3tGXUHTyzwonpeSYhWMHyto3dJNgtS3KKIrb0+qCaqeA2IKBMKmklweNN6y9VUSRT7qSYUpPrrFLdrksKJzgy5yV2u6qreAqx42zca0CctcM4Fth+xGL4BnGbNq5vNaAMq3rhALk/HLRaQyJ8lpzxRvs2mUrbj/NgQhK8U8OFw0Xp9q1gDBuYpIZk46cDgMAx0XFHcn50952lTuCuGRUxEqu+Q2G3xh7g/51JAdOQ6R1Q9c9zSEv6DDUH8azSkefww== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; 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=XSlsZqPpQhjSCl1AN3kFWhBrwlT/ll2LHD4n/2ZWo6A=; b=c/ZTlyRUcC9zDs/s9sD9vqZ/EJGRruc/4fhC8HRlyT/Ql7Mec3CbRHGjMd28GP2Ux9GSN1iyp4RngfBF9gulIP9PDUdqMpfs3nP1Rq0kUldfPfv9CMn39mXPpRec1ZSR/J3DmumOJvSt0oIipB0SHykJ6dENvDwZ2c5+sUvvSg+Y6P53i49VUvx616fwFESEGmkad9VoVF1TW1B8FP0NZ8zbXrfwCI4Z74Go4Aqv18gGx2Ew5io6kzFI6yZdx8ru9RRx7OCNK4SkB8WjYe+5q5qXZGy4oajpQRKCMDwclrYYTKyXojHUonUtETLHmOnvfaNueLZKOVYh9RkGs4BMvA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=vger.kernel.org smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=XSlsZqPpQhjSCl1AN3kFWhBrwlT/ll2LHD4n/2ZWo6A=; b=nH+ueapDci5/Kk7r04pj7hwnAOLaewZywKYGq6Y1LeFPoWcIcohVM5lCQ5LTKdXd8Pe9iVcHtF4el7PhVQgnedG8kHvRFPQemQ8wNdG1barr0eO8fqfD2zRISjwMw5UUV2RYnDSCxAcd6kWqKmDzyWYtni230zUdRd/F7UR5xHA= Received: from BN9PR03CA0148.namprd03.prod.outlook.com (2603:10b6:408:fe::33) by LV8PR12MB9081.namprd12.prod.outlook.com (2603:10b6:408:188::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9298.16; Mon, 10 Nov 2025 05:25:04 +0000 Received: from BN2PEPF000044A6.namprd04.prod.outlook.com (2603:10b6:408:fe:cafe::c7) by BN9PR03CA0148.outlook.office365.com (2603:10b6:408:fe::33) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.20.9298.16 via Frontend Transport; Mon, 10 Nov 2025 05:24:57 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=satlexmb07.amd.com; pr=C Received: from satlexmb07.amd.com (165.204.84.17) by BN2PEPF000044A6.mail.protection.outlook.com (10.167.243.100) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9320.13 via Frontend Transport; Mon, 10 Nov 2025 05:25:04 +0000 Received: from BLR-L-BHARARAO.amd.com (10.180.168.240) by satlexmb07.amd.com (10.181.42.216) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.17; Sun, 9 Nov 2025 21:24:56 -0800 From: Bharata B Rao To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , Bharata B Rao Subject: [RFC PATCH v3 2/8] migrate: implement migrate_misplaced_folios_batch Date: Mon, 10 Nov 2025 10:53:37 +0530 Message-ID: <20251110052343.208768-3-bharata@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20251110052343.208768-1-bharata@amd.com> References: <20251110052343.208768-1-bharata@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: satlexmb08.amd.com (10.181.42.217) To satlexmb07.amd.com (10.181.42.216) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN2PEPF000044A6:EE_|LV8PR12MB9081:EE_ X-MS-Office365-Filtering-Correlation-Id: 42eef232-1082-4579-e9c2-08de20198133 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|1800799024|376014|7416014|36860700013; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?zUB4HTXNfMPQkzNyB3FJun6JchcWLwH5eHiYqlXH5UKCh2b5SAC0ZZcTWlSl?= =?us-ascii?Q?UiD9nQWJKvGCb7EggEv5Frfe/JbwIqhdfdw7lagGNevRNgxRbeU8KURzJL0V?= =?us-ascii?Q?63F+WEMoEonkOSKhSBhyXGTd2YwkYgmAr+cMxpAeCyhD3VnZR4BFY2mYHfEA?= =?us-ascii?Q?N1kygvSMkAE0p4NuXg5KhxN7YsZINoMn+kKr+jvT5LQhMGXc3swUUr+SGkOJ?= =?us-ascii?Q?0nJgB+BIrSOu19D+Vx7hNn49JX3CViEkg+TfvMktCme06SG3zoxf7MCycHhJ?= =?us-ascii?Q?DSY2aNKk/Hof7zGVM8cfrFldqu+yh0citoa9O6pBz7HXAKzG70M4FhEGuhhr?= =?us-ascii?Q?vRRqSg1X7okkyyxm/Pm2IZCLcg2/phpbqzX9cVlKyO5T37U499s5O91RgyYF?= =?us-ascii?Q?sA/oXrPwggPUpaI9KmuF1XPOlmSqA4w6Mivl9ODeaDJQsPZ1LeHCYLeMchcb?= =?us-ascii?Q?lLxocx/RXo1oR9p3xNCQ04Tj242/iO2d9OKnvP16Z6DqJ6OnNPhBKEY2cyut?= =?us-ascii?Q?fMX3M9Qn31Qc4TV4WYYVBbNj0y1Flq5wXW/Io7MNRiD/SCHMtSGBh1LHt9ge?= =?us-ascii?Q?AvNT3/d4F0A4cJTZGxrbwp5CEZlC4oGwkHAA4e7rI/ZOJWFh+7ynDhUc0/oc?= =?us-ascii?Q?RoCkBB2k3gkfLigIsWB5m7RigjhK9jl/2d5ZPj0r1YpXo7fNs7k4Fn8wPQVF?= =?us-ascii?Q?YI2e4J9aKIgU/VPKVst+nczUXime1hFry6Lt3O73S+Kl821/VPj2oU0Hy6rI?= =?us-ascii?Q?uvrEKufbms7qYKVJu+JmLRyoSiUXpRog9UUp7ze+EzHBGsmrgRMdd0Zv0wva?= =?us-ascii?Q?4XC2/iz1CGrCrcNDUmdF6fpTP0He6wkn/ky0DMTp+TRCMa2GSGxOQs2JAveh?= =?us-ascii?Q?OMUE84AssZGqWFeZfHppyAs+fuxIy2G5PIC1Qov5upST7jZj0fhiLDGlQFyJ?= =?us-ascii?Q?Ba9LUY1sAsBFFhsFo9v+w7qzFHKlcqy7RVptr/3l7JI/tMUOlHtjWHcl42s5?= =?us-ascii?Q?oYiob73qb1xX/Rjmu1fxFozQ7ORNoOsSAH1ENOaZufx+6syZWbYsAywXrgnj?= =?us-ascii?Q?9kw8DYiMOjwIc08ZCcgz+8UfTDnDEmMHHbDIS9P9IbqyqN5I+TgmdpzmlIEV?= =?us-ascii?Q?jbzk7fwM4igVQxAkxbALCzS8p8WhJAa71lCz4W+v4vaib94eYXmY+uxzQ6sw?= =?us-ascii?Q?rGukcRGQM1oMS32FgOrwMy2pLfx1GvKTuli9guZ1l+dnSN04T/GKdZKF8C2N?= =?us-ascii?Q?24CjZYBNbuC4ge181d2BbnbvCjJI31cRcvw2e4tlb4qhqc0tUpgo47rEQIQD?= =?us-ascii?Q?/Y+bIH23QAekWOJ+26zfepzDiSxzuKzGIi953q1m2o0F+ttLxSPzhwo7AiEh?= =?us-ascii?Q?L+KAzELECutyoOLwt9SdA9uyY69t9sKC/Baamjn0vTV5lJF+iiFtolIUj9hW?= =?us-ascii?Q?Wl/h5y/D3il9MKCUAbinkayXGLVJ7KzxgtsM0pLU3GZiOfaPWKisF/vnxK0c?= =?us-ascii?Q?u08jxSFelObLTzxklVI3M1AzJpS8bFvwWk6jwxCSDwz4uCQXGB0mENwUjMbO?= =?us-ascii?Q?V8o0YmkxZbSskYYhYic=3D?= X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:satlexmb07.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(82310400026)(1800799024)(376014)(7416014)(36860700013);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Nov 2025 05:25:04.6692 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 42eef232-1082-4579-e9c2-08de20198133 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN2PEPF000044A6.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV8PR12MB9081 X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 8F39F1C0005 X-Stat-Signature: 56rzrcr3z1m5w9q8bk4i54wpm1rgq8no X-Rspam-User: X-HE-Tag: 1762752309-448274 X-HE-Meta: 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 SSV7192E 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Gregory Price A common operation in tiering is to migrate multiple pages at once. The migrate_misplaced_folio function requires one call for each individual folio. Expose a batch-variant of the same call for use when doing batch migrations. Signed-off-by: Gregory Price Signed-off-by: Bharata B Rao --- include/linux/migrate.h | 6 ++++++ mm/migrate.c | 36 ++++++++++++++++++++++++++++++++++++ 2 files changed, 42 insertions(+) diff --git a/include/linux/migrate.h b/include/linux/migrate.h index 1f0ac122c3bf..2ace66772c16 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -103,6 +103,7 @@ static inline int set_movable_ops(const struct movable_operations *ops, enum pag int migrate_misplaced_folio_prepare(struct folio *folio, struct vm_area_struct *vma, int node); int migrate_misplaced_folio(struct folio *folio, int node); +int migrate_misplaced_folios_batch(struct list_head *foliolist, int node); #else static inline int migrate_misplaced_folio_prepare(struct folio *folio, struct vm_area_struct *vma, int node) @@ -113,6 +114,11 @@ static inline int migrate_misplaced_folio(struct folio *folio, int node) { return -EAGAIN; /* can't migrate now */ } +static inline int migrate_misplaced_folios_batch(struct list_head *foliolist, + int node) +{ + return -EAGAIN; /* can't migrate now */ +} #endif /* CONFIG_NUMA_BALANCING */ #ifdef CONFIG_MIGRATION diff --git a/mm/migrate.c b/mm/migrate.c index 189d0548d4ce..990a251aea33 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -2739,5 +2739,41 @@ int migrate_misplaced_folio(struct folio *folio, int node) BUG_ON(!list_empty(&migratepages)); return nr_remaining ? -EAGAIN : 0; } + +/** + * migrate_misplaced_folios_batch - Batch variant of migrate_misplaced_folio. + * Attempts to migrate a folio list to the specified destination. + * @folio_list - Isolated list of folios to be batch-migrated. + * @node - The NUMA node ID to where the folios should be migrated. + * + * Caller is expected to have isolated the folios by calling + * migrate_misplaced_folio_prepare(), which will result in an + * elevated reference count on the folio. + * + * This function will un-isolate the folios, dereference them, and + * remove them from the list before returning. + * + * Return: 0 on success and -EAGAIN on failure or partial migration. + * On return, @folio_list will be empty regardless of success/failure. + */ +int migrate_misplaced_folios_batch(struct list_head *folio_list, int node) +{ + pg_data_t *pgdat = NODE_DATA(node); + unsigned int nr_succeeded; + int nr_remaining; + + nr_remaining = migrate_pages(folio_list, alloc_misplaced_dst_folio, + NULL, node, MIGRATE_ASYNC, + MR_NUMA_MISPLACED, &nr_succeeded); + if (nr_remaining) + putback_movable_pages(folio_list); + + if (nr_succeeded) { + count_vm_numa_events(NUMA_PAGE_MIGRATE, nr_succeeded); + mod_node_page_state(pgdat, PGPROMOTE_SUCCESS, nr_succeeded); + } + BUG_ON(!list_empty(folio_list)); + return nr_remaining ? -EAGAIN : 0; +} #endif /* CONFIG_NUMA_BALANCING */ #endif /* CONFIG_NUMA */ -- 2.34.1