From patchwork Wed Feb 26 21:00:31 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zi Yan X-Patchwork-Id: 13993180 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]) by smtp.lore.kernel.org (Postfix) with ESMTP id 337A3C19F2E for ; Wed, 26 Feb 2025 21:01:21 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id B893E280007; Wed, 26 Feb 2025 16:01:20 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id B3811280006; Wed, 26 Feb 2025 16:01:20 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 93CA3280007; Wed, 26 Feb 2025 16:01:20 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id 74A35280006 for ; Wed, 26 Feb 2025 16:01:20 -0500 (EST) Received: from smtpin28.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay07.hostedemail.com (Postfix) with ESMTP id EA770160B15 for ; Wed, 26 Feb 2025 21:01:19 +0000 (UTC) X-FDA: 83163316278.28.BCA8485 Received: from NAM02-DM3-obe.outbound.protection.outlook.com (mail-dm3nam02on2083.outbound.protection.outlook.com [40.107.95.83]) by imf10.hostedemail.com (Postfix) with ESMTP id E46F2C002C for ; Wed, 26 Feb 2025 21:01:16 +0000 (UTC) Authentication-Results: imf10.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b=Dri2vtaM; dmarc=pass (policy=reject) header.from=nvidia.com; spf=pass (imf10.hostedemail.com: domain of ziy@nvidia.com designates 40.107.95.83 as permitted sender) smtp.mailfrom=ziy@nvidia.com; arc=pass ("microsoft.com:s=arcselector10001:i=1") ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1740603677; a=rsa-sha256; cv=pass; b=unOFC+RVqSDn2Wxtc6GUPR/4l+xZeLAlm3YqJtV+RWrkAFgrLXohKNP4YldRZt+OP1sZ5K B1VBUFsi1CkQ2T/0wDu+jwv3ofxd+PP//DGPJTXN+yLdEb2l5iwOHCeYTSJ7HidBpGrc/a c+04oCkZduz9TB1R0G8Ox/FsbUBrwPc= ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1740603677; 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=EU/UsANrLIuJHJQZyVRl3KO3Nn3lqvBBpTugjGoZsIE=; b=eqCPxSrAZxa0vlsJhdunMXYO2l/T8YTXjKRZI/ri0hESgCMRMm1R0K6q6nJy7c5KDbjmzb kKO6RC7Ux+kf2nwYdz1KJVi7QtMfQN/cM5lCBtizvOO3w3oEK46u8RNkV7a8/YGIVDDTwa GMd+rj47Jk+LKVrfGB73uDApDWuFvXI= ARC-Authentication-Results: i=2; imf10.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b=Dri2vtaM; dmarc=pass (policy=reject) header.from=nvidia.com; spf=pass (imf10.hostedemail.com: domain of ziy@nvidia.com designates 40.107.95.83 as permitted sender) smtp.mailfrom=ziy@nvidia.com; arc=pass ("microsoft.com:s=arcselector10001:i=1") ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=MHMRMj6fv+XwcMYmD99mtkDsbbXgaa+Y9QBQSfC13cIbft2HFPGm9IgEPv0zxByT9G21udlXilhSAE39k5zNnAXrUeywrFT0pbp+gPNDMePoFUEjKfgUPawqbbmHN1lHXXO7/gGl7Cb+lgl38W038zZ2jyhCw/h4bEBqC7LIbsAyHSPj8qigU/Ijdy+mQRH63NBGyLpVPnPdFE4lnnQgXemFr92nvhSpF+D3Nxt+deT197YK0M2inIxEuSU+lOqz+itfuAq2068AQxQevspJf3N1L6Uo3QQKWGvaDW6aupqHhQ3W6i9D3jamN/WGmVKC+s4R5HCEmj1m9bcwsQElqA== 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=EU/UsANrLIuJHJQZyVRl3KO3Nn3lqvBBpTugjGoZsIE=; b=hbNJXQhxV0eEYeIWYb9dkRXDWZXe+3zP8u6DTWWwz1PzZXZj+kB4ZILgylz8FNThxts5IjkgmABvgQDr4CKDXIxu62V6ivgAlmPVx5CXxdcFTo3aot2Cc215ztZfj8pQeBtjn1xnAcn6RYPchbiY/wwVl734vJ0gvgOqYYzSfr+xjcHwtmRFPR8f9Glzw6PhAUSfAhH+5F7G12pgK4CXM6P3qr9CNT0+gZtM7cznYnpOcp6XR/6qSmLXOpq6LvQvhYVyIrtvEfKSMXhohHxRMKcRIZ0BVDZStLYFs8greO40aRcgu47SehZuWlnwfA4VIGJeu3fMZh0lAfFmou3gDA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; 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=EU/UsANrLIuJHJQZyVRl3KO3Nn3lqvBBpTugjGoZsIE=; b=Dri2vtaMqQFpkpkwRQM53wwGIO7Q8b6vNz00BXUq0RHDgZWR+yeSgEIhcwg3ypxLn7OO9U5GRV6yNerUFYWf7CGS+PANvUdVsFAdDGaA2psksCbzztbzSvWNEcSFJj3w5KX8z293MpOP6sSnqE0zO2s43qF+EiWRh32DJ/9FLNfIYmE0isSIuqRi0+LKmlOPuxNBeh7NQBQxPSYx7vCdzrU3smLhluPrCP7ZKwsr88n2sG+WjNYeedel47Q/aBGjsy+pvHX3s190yMa8KqV9jTTvSRehqMx06A7w4PAtORAbBy8jTV3co3PhiLn4+T8SnI0PCpK5x9J81H2msNOPVQ== Received: from DS7PR12MB9473.namprd12.prod.outlook.com (2603:10b6:8:252::5) by SA1PR12MB5614.namprd12.prod.outlook.com (2603:10b6:806:228::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8466.19; Wed, 26 Feb 2025 21:00:51 +0000 Received: from DS7PR12MB9473.namprd12.prod.outlook.com ([fe80::5189:ecec:d84a:133a]) by DS7PR12MB9473.namprd12.prod.outlook.com ([fe80::5189:ecec:d84a:133a%5]) with mapi id 15.20.8466.016; Wed, 26 Feb 2025 21:00:51 +0000 From: Zi Yan To: linux-mm@kvack.org, Andrew Morton , "Kirill A . Shutemov" , "Matthew Wilcox (Oracle)" Cc: Ryan Roberts , Hugh Dickins , David Hildenbrand , Yang Shi , Miaohe Lin , Kefeng Wang , Yu Zhao , John Hubbard , Baolin Wang , linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Zi Yan , Kairui Song Subject: [PATCH v9 8/8] selftests/mm: add tests for folio_split(), buddy allocator like split Date: Wed, 26 Feb 2025 16:00:31 -0500 Message-ID: <20250226210032.2044041-9-ziy@nvidia.com> X-Mailer: git-send-email 2.47.2 In-Reply-To: <20250226210032.2044041-1-ziy@nvidia.com> References: <20250226210032.2044041-1-ziy@nvidia.com> X-ClientProxiedBy: BLAPR05CA0040.namprd05.prod.outlook.com (2603:10b6:208:335::21) To DS7PR12MB9473.namprd12.prod.outlook.com (2603:10b6:8:252::5) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS7PR12MB9473:EE_|SA1PR12MB5614:EE_ X-MS-Office365-Filtering-Correlation-Id: c3d133c9-ab0c-4319-0fef-08dd56a8a6c8 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|1800799024|376014|7416014; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DS7PR12MB9473.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(366016)(1800799024)(376014)(7416014);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: c3d133c9-ab0c-4319-0fef-08dd56a8a6c8 X-MS-Exchange-CrossTenant-AuthSource: DS7PR12MB9473.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Feb 2025 21:00:51.0337 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: rr+tuTkW9gT62yXZLQRNMtXbzyQ9tj5v1TbKbyvzCxkqk2unq6WAFX2bd+hVgs9H X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB5614 X-Rspamd-Queue-Id: E46F2C002C X-Rspamd-Server: rspam08 X-Rspam-User: X-Stat-Signature: fbtofqcar8ewghgdrhtgzqw5osfop4ad X-HE-Tag: 1740603676-178307 X-HE-Meta: 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 L97rtVNb 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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: It splits page cache folios to orders from 0 to 8 at different in-folio offset. Signed-off-by: Zi Yan Cc: Baolin Wang Cc: David Hildenbrand Cc: Hugh Dickins Cc: John Hubbard Cc: Kefeng Wang Cc: Kirill A. Shuemov Cc: Matthew Wilcox Cc: Miaohe Lin Cc: Ryan Roberts Cc: Yang Shi Cc: Yu Zhao Cc: Kairui Song --- .../selftests/mm/split_huge_page_test.c | 34 +++++++++++++++---- 1 file changed, 27 insertions(+), 7 deletions(-) diff --git a/tools/testing/selftests/mm/split_huge_page_test.c b/tools/testing/selftests/mm/split_huge_page_test.c index e0304046b1a0..719c5e2a6624 100644 --- a/tools/testing/selftests/mm/split_huge_page_test.c +++ b/tools/testing/selftests/mm/split_huge_page_test.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -456,7 +457,8 @@ int create_pagecache_thp_and_fd(const char *testfile, size_t fd_size, int *fd, return -1; } -void split_thp_in_pagecache_to_order(size_t fd_size, int order, const char *fs_loc) +void split_thp_in_pagecache_to_order_at(size_t fd_size, const char *fs_loc, + int order, int offset) { int fd; char *addr; @@ -474,7 +476,12 @@ void split_thp_in_pagecache_to_order(size_t fd_size, int order, const char *fs_l return; err = 0; - write_debugfs(PID_FMT, getpid(), (uint64_t)addr, (uint64_t)addr + fd_size, order); + if (offset == -1) + write_debugfs(PID_FMT, getpid(), (uint64_t)addr, + (uint64_t)addr + fd_size, order); + else + write_debugfs(PID_FMT, getpid(), (uint64_t)addr, + (uint64_t)addr + fd_size, order, offset); for (i = 0; i < fd_size; i++) if (*(addr + i) != (char)i) { @@ -493,9 +500,15 @@ void split_thp_in_pagecache_to_order(size_t fd_size, int order, const char *fs_l munmap(addr, fd_size); close(fd); unlink(testfile); - if (err) - ksft_exit_fail_msg("Split PMD-mapped pagecache folio to order %d failed\n", order); - ksft_test_result_pass("Split PMD-mapped pagecache folio to order %d passed\n", order); + if (offset == -1) { + if (err) + ksft_exit_fail_msg("Split PMD-mapped pagecache folio to order %d failed\n", order); + ksft_test_result_pass("Split PMD-mapped pagecache folio to order %d passed\n", order); + } else { + if (err) + ksft_exit_fail_msg("Split PMD-mapped pagecache folio to order %d at in-folio offset %d failed\n", order, offset); + ksft_test_result_pass("Split PMD-mapped pagecache folio to order %d at in-folio offset %d passed\n", order, offset); + } } int main(int argc, char **argv) @@ -506,6 +519,7 @@ int main(int argc, char **argv) char fs_loc_template[] = "/tmp/thp_fs_XXXXXX"; const char *fs_loc; bool created_tmp; + int offset; ksft_print_header(); @@ -517,7 +531,7 @@ int main(int argc, char **argv) if (argc > 1) optional_xfs_path = argv[1]; - ksft_set_plan(1+8+1+9+9); + ksft_set_plan(1+8+1+9+9+8*4+2); pagesize = getpagesize(); pageshift = ffs(pagesize) - 1; @@ -540,7 +554,13 @@ int main(int argc, char **argv) created_tmp = prepare_thp_fs(optional_xfs_path, fs_loc_template, &fs_loc); for (i = 8; i >= 0; i--) - split_thp_in_pagecache_to_order(fd_size, i, fs_loc); + split_thp_in_pagecache_to_order_at(fd_size, fs_loc, i, -1); + + for (i = 0; i < 9; i++) + for (offset = 0; + offset < pmd_pagesize / pagesize; + offset += MAX(pmd_pagesize / pagesize / 4, 1 << i)) + split_thp_in_pagecache_to_order_at(fd_size, fs_loc, i, offset); cleanup_thp_fs(fs_loc, created_tmp); ksft_finished();