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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B72A9C44508 for ; Tue, 14 Jul 2026 07:31:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-Id:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=QsHyDwbZDt14FavL1G1amq1dUCjoYT5O4o88+Pn2YyM=; b=U1dCT0M1y1zIgr8t46NFPoR2AA 67FatY0YVXrs5Jj4rh5lLkZK1IVRDp++KhNt26TtqiZAwPz7qeTlLqSz/9jqel9CPGfQAgcoiSYeI UEaeKYnf+GCOHxLcMciYS4Jnr3wrmxZxMoSojHKrCf71gDlVcFy6+jbm9pej0uygApdpgFHQqd/Cn Kpo6ll+wikhTXIrpaU2zueUJH85tGtRbI+KGfPKjh6Z1CmjQvbhn3ANBgqg4ZMPTaOoP4QHxFSYYp U+MUlJ0osiE46gKmDaqMnaDvJQF4LMazwhpehxBHKQEegKqppB6mmN5fa9hJsWsHfsmdL6Ut88z+j XWqJXGUQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wjXcC-0000000BAyU-3SzW; Tue, 14 Jul 2026 07:31:40 +0000 Received: from mx0b-00069f02.pphosted.com ([205.220.177.32]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wjXc8-0000000BAvG-1LN1 for linux-arm-kernel@lists.infradead.org; Tue, 14 Jul 2026 07:31:37 +0000 Received: from pps.filterd (m0246632.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 66DL3FKm1347283; Tue, 14 Jul 2026 07:31:15 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s= corp-2025-04-25; bh=QsHyDwbZDt14FavL1G1amq1dUCjoYT5O4o88+Pn2YyM=; b= hCr7WUClW1RXe54ke855hqwjWePKg0ZT3aoGti0quCldb208mBfxEZqKPlA6CZUe 1urG52WpkdadCN3BiEjS6hL7+3yjG7mLLYB4KuUjX8ffTB1MeOYbm3DCq2O0iOac +o1STQN/N8iVrneBq0GWbmFK3hpU9X7IhbcayqjhNtSVShCJUDJ+Ehc44YuQQpN0 OJR4/XHg301HVw1PE3bli0Sxk8nCu6sGtWOW0jXmJ5lnP9lcv//clxmJMEIVrW+j ng6Nx2aVh3EbiIZpdecAjCdXyspSuFGcXw4h9ik2m1oYCfIWPJN6TOKL8TP+nPfi 3e4ubwa3WN9mEsooLA6Rvg== Received: from phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta01.appoci.oracle.com [138.1.114.2]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 4fbep33p3r-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 14 Jul 2026 07:31:15 +0000 (GMT) Received: from pps.filterd (phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (8.18.1.7/8.18.1.7) with ESMTP id 66E7SAFK018837; Tue, 14 Jul 2026 07:31:14 GMT Received: from co1pr03cu002.outbound.protection.outlook.com (mail-westus2azon11010065.outbound.protection.outlook.com [52.101.46.65]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 4fbc9dg32r-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 14 Jul 2026 07:31:13 +0000 (GMT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=nlraNFB4DxaasLB+Rm8OwczHJ1O9+fDFVVcxV6rlwsAz4LbYvoo/MXHesBrYFBYEZM1AjGdlfXsdulR8CLIVWHFkXFveQOm/dOih+Ci+DlisQ7kQNQgMcCefDtSCLYqE3ZM9nQjeiEr/dgQKwsplOJzRrm1nrCdMiyt8BgKsWG3o2aWCU1GY3HJHFMMQafspcTt9t6uEk9qYlFRUJ/xvj+6A2uWR9CYSdGdcCLDWcvSExIsvJHkmi+Wqa1M/Dw2YdOjsVrdr/LcE+PYSSeC+/IRzyH72jorL/fThWqoxRUN6OkDSjski1HYHvfLPPdSTogmvrtdDnew3Y1eaW/vGBw== 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=QsHyDwbZDt14FavL1G1amq1dUCjoYT5O4o88+Pn2YyM=; b=HXqr4X3f1YG3HzU2ebl7qXJrPi3jv92DZLR4BDTqaYthWd4yruz8rgPfMnDvfxvuk5MhBe75UFNJ7Wz873mlC3gVrZQT4Qu2bgThF1DWTLNm/AIzSz7I9ohsTVCD28p/ojLGu1bi5rEPCIjhkqF0Hpb6d5k36xZEyQLpx1spFtpLZsehPA9Mr5zWAeQek17uW2OvKD3QMr6xmh0i8sHdlc24Bi6/nwUU7R/k1hpXjxS7Bd0y87UcEtmTKW5CYZNCzKh9F3EijETofJI812oOjT9Vu0dTcLv9OO6LXIvIHpAKWmnVZMChfOLL8fQ1uCyP8EYP2gypxoYmbMJkZXShoA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oracle.com; dmarc=pass action=none header.from=oracle.com; dkim=pass header.d=oracle.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.onmicrosoft.com; s=selector2-oracle-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=QsHyDwbZDt14FavL1G1amq1dUCjoYT5O4o88+Pn2YyM=; b=f1enme8mKLbyz3YhpTwdfe0NjvxUokWxy6pJpj7pEVjiZu1Cy9hiAFwtq7206k7x4V//8lkOoVDAqitlMuIA1b9o9l8QmY46Fei5FGICidMMzT0kCIGgj3yc04dlZHYJKZ2p3Go5NBorQaBrt1cFyKO8pCFu7HlHDAa2XNRdlVk= Received: from CO6PR10MB5409.namprd10.prod.outlook.com (2603:10b6:5:357::14) by CY8PR10MB7124.namprd10.prod.outlook.com (2603:10b6:930:75::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.202.18; Tue, 14 Jul 2026 07:31:09 +0000 Received: from CO6PR10MB5409.namprd10.prod.outlook.com ([fe80::3c92:21f3:96a:b574]) by CO6PR10MB5409.namprd10.prod.outlook.com ([fe80::3c92:21f3:96a:b574%6]) with mapi id 15.21.0202.018; Tue, 14 Jul 2026 07:31:09 +0000 From: Ankur Arora To: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org, bpf@vger.kernel.org Cc: arnd@arndb.de, catalin.marinas@arm.com, will@kernel.org, peterz@infradead.org, akpm@linux-foundation.org, mark.rutland@arm.com, harisokn@amazon.com, cl@gentwo.org, ast@kernel.org, rafael@kernel.org, daniel.lezcano@linaro.org, memxor@gmail.com, zhenglifeng1@huawei.com, xueshuai@linux.alibaba.com, rdunlap@infradead.org, david.laight.linux@gmail.com, broonie@kernel.org, joao.m.martins@oracle.com, boris.ostrovsky@oracle.com, konrad.wilk@oracle.com, ashok.bhat@arm.com, Ankur Arora , Boqun Feng Subject: [PATCH v14 07/15] atomic: Add atomic_cond_read_*_timeout() Date: Tue, 14 Jul 2026 00:30:33 -0700 Message-Id: <20260714073041.40250-8-ankur.a.arora@oracle.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20260714073041.40250-1-ankur.a.arora@oracle.com> References: <20260714073041.40250-1-ankur.a.arora@oracle.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: YT3PR01CA0107.CANPRD01.PROD.OUTLOOK.COM (2603:10b6:b01:85::20) To CO6PR10MB5409.namprd10.prod.outlook.com (2603:10b6:5:357::14) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO6PR10MB5409:EE_|CY8PR10MB7124:EE_ X-MS-Office365-Filtering-Correlation-Id: 40fc4a7f-3267-4e68-c154-08dee179df89 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|366016|1800799024|23010399003|18002099003|22082099003|56012099006; X-Microsoft-Antispam-Message-Info: cFRTqhA7CsGpQrwc6h39XowRdZ/YC+cwOhfoZFRhGHme5WrS5tfieCFjLQZ06prQ2/8PmFc64jRW7mhoKI4p39omUJkm1b9JrUi4aWClFmfw1qWTU2xyWwM+lWKiWvR7hmNKf9xDB461noNXK2J19KPw/saiFOykOWy3Uba1FXoxu1L8tD6vy5/i7DTrcwIuSsBKraHOG0jT1JzETN7A9n5oFxDM+LoUQiUt0uuS9BMRzZNZiytHa8MgjFVhHyFoZqCUZFxXVW01pPxU1wIt3Mf4nBqkahj75QUg2HTRgYwJYnnQDI3+sI/uLBZFWW89ClLjaMsGl5kzvzSas76CDXx2z82IeYKy/zaWPnIHmc8RJvu1DuSWFR1LlgJQ71DmQZM9V3fPz1S5loDyuki+eOFQn5GqZvifLHCrvlgCcjOcRYw9jUE3IY3tqsHz+QzhFJSehJudj7Yn3Vu5z54s1MFG5m8qIhm8uYBAFSu0O+jeBifzz1d1LqxpH0zfK0ByoyOq2z/A9TYg5Y6LGjUr1hjUj98pIjJEl3a6S8wkcVJ0zQe2C1dDrl4qEzS0ZxoAXEPRN48i4qL057t6BxdN4WXe7sR/g1dm/E7DGKaQsss86UB7JSl7dYTvd5Ynjr1jeukM0HHMUggOkxMqWsYDIRDkbx37xmSctdFw3apj2wA= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:CO6PR10MB5409.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(7416014)(376014)(366016)(1800799024)(23010399003)(18002099003)(22082099003)(56012099006);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?Cwr8GRAzDRl/9gfX9dtmhe9thD0KVwG5FULSIQ69pKu1psNxzl1cwbtaOZJu?= =?us-ascii?Q?uQlCN9eQF6fRlSupadzMnsc3QEx9LOYT3zoPUkDi6YVlt6vK+zFeKp+3A32M?= =?us-ascii?Q?au54AKVEp9xDDmeymuCcxeQsj/SbiPiqLx6jIVYlMkUdkEh46lU7FdC2eHWy?= =?us-ascii?Q?aZJcvHif+sK8HbLMa/m1LIi8JJuDijx0UhWYOdRU6eSVSC+BUR+cODCJgDEu?= =?us-ascii?Q?Jcx68Tg02zTYG8VfSkkc+DaUpY0s5deBWrlen3qs2X3OtzyDa7rkaxaLg6sY?= =?us-ascii?Q?XvvJf78x9hvffYB6Zgtke0WlKD1xHA/iwzhPJrGHX7R8GKEzkAVe5fFZh/D/?= =?us-ascii?Q?Xzk/ZWjhptUeVBdnXTVdqggOezgl49qo6xj85CQtBGWqT881gsOHAULN9Vr0?= =?us-ascii?Q?5JZKM4OpqeyM08eYTSeYcSOpPhMu4AddVITIgGkYEOQfBwzPUhhT7Fr+s8Ma?= =?us-ascii?Q?6RHx0YyC4R8P1jhntwp7n5VVglWuqQO3uhzNilq4himQP7GwFe+so3bpgFzm?= =?us-ascii?Q?7GYCrOp8A91ZWlqryXkZOptOvV1qB4AExRPKlAjgW+GwmKKFrgl25lCk0YL+?= =?us-ascii?Q?kmCqmwsqgmQE6W3+rYzp0XegHjPbZ4gW9SZuM7AUqIgX1jgBh2r//LBk7HQt?= =?us-ascii?Q?25asYdxIMIb5dGQ2i1/MJjyDVlU59a96TBDfOC9MAvYJVLa8rbmbN110wxrL?= =?us-ascii?Q?McvT27Yec+6IPMlknUh9vt2tkQRlLcJDPtZl8j3QRKVIyBvgZS6Vqbi/I+Vb?= =?us-ascii?Q?0JerUA5O6Ch99pN0r/v1rNnM/OQOleU3E0ejoT3FHz+zL2yQA4yPUkapaWVn?= =?us-ascii?Q?9G0q4VNmf72DyBshauH8yuETP2lCqJ4iaL+cIAAIDDhWewPWmI6NYB9hvJt0?= =?us-ascii?Q?YctJ5Do9CIYnlUo4Ko1DaQlMH46PqZRRpYIn9GZdAAvH1RF41rLQZq2dHVPw?= =?us-ascii?Q?eHT2QziorEZPlLj+W0fHknGD0ZqTbN3hwbIUKIXzUWXhHksS+GhoTBR/Xpwq?= =?us-ascii?Q?ajf5qKnKn++gSV+AdSGNWQAKeoAJNKHH5LHEoFl4DPAr1iC5wCLbnkJcPI2M?= =?us-ascii?Q?MIrLAXlga8OcbAu4FCXzlVmIen1zP4r6y2QK3T4GEw89tmd8IEFwyvMQ4rL4?= =?us-ascii?Q?lCQlpuI7XXzWHq/1BoG1OPei9C8LH/rHGAlmi+3H9FgF6D2EOHVldByr5jRO?= =?us-ascii?Q?0sDBF7H89S1q6lDfOs4uPRBx+2C1Tvxdnu8oGMfKcU1rF1gVTk6CjhJ8psI/?= =?us-ascii?Q?lsmGkOQU3NA7UH7ihtneC8FDAtIVt5AMrEYCacw9EIw4Xkj7uOQodSYPhYeu?= =?us-ascii?Q?smrZBVMAe05MP7KXeD9xWTO+2PNvTW2BTxec3YcCsQoeb4KW4B6VEH5GKtAI?= =?us-ascii?Q?ixL9xROsaEtToneW0EGS/GUM+u66NfI51E9hxNKcJ/J6GpmTHE1cgnTLjBce?= =?us-ascii?Q?6iQfd2ZIoMSw3627wX/zfBm6cjYlkDAqUJbEeIKK92skCW6/9PfxG21uk5Wy?= =?us-ascii?Q?bHFmOjDphPp1CElhu5G7bndvsxJflktEfvPXv2qNcPmZSoOmiw5iTZLMEn6f?= =?us-ascii?Q?zQByAYDOFvJk57ufi4hKhqYLFUkIxwcRZO/o1tSocIqrUn9m7kjKkHSKuvcU?= =?us-ascii?Q?FMcMIur+a9FbRPMfx6tPYHItw6l7af6B2vW6IjLgf131E0Gv9fNziZ3WmogP?= =?us-ascii?Q?D7spqwSOIELDkvna0MuHvqvgXBQZ5IwjmFhD200sM3vZAsIKRobelLYB9r7w?= =?us-ascii?Q?VgaDTYTFW8d/xkOk7pn4aO5ZTsMNt/w=3D?= X-Exchange-RoutingPolicyChecked: D++y7SscGFhXGyqdk8hCTJVvuElBkTpezKjGttY134pMM1Sa7hr22ptgGakX6x/FH5DzvgPHTnfSfrNpGqdWlP9cCAIuTChKNZIdALJhWIwitOg5hD8afMQEYKEkmiW5n12a/LMdG0nAnydwWxT6jkR5JEnfIQMVFMgjxVOuq5HOb8Gzf7pu6pqpoJzsbnrjEcWYU/oW6xpcNpYEZGrNp9N0n+JPRtmSA5jqKWaOCdxCTmGFQKnvsXUO5x9s/LNlYPAQsiQ5XlYuaEevhMQ0S7pBecoGNp25n+tS5La9nZarb4uqLiEiW3leG1xtMJDlmaGI8BWddPgwX7gygsliog== X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: 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 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: 40fc4a7f-3267-4e68-c154-08dee179df89 X-MS-Exchange-CrossTenant-AuthSource: CO6PR10MB5409.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Jul 2026 07:31:09.2587 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: whhOT1R8JYEAyr020GaKlWTy9t9JiqYrF7o3R1SHYGPn/S2zpweLgsgnINTuhb19GBGIwHqZdmm441gn5GQ6tr+zvbG0wxMqXRZEsreDqPw= X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR10MB7124 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-14_02,2026-07-10_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 mlxlogscore=999 lowpriorityscore=0 suspectscore=0 adultscore=0 phishscore=0 malwarescore=0 mlxscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2606160000 definitions=main-2607140076 X-Proofpoint-GUID: y3JdFC5T-SvmajI9z3AqTFBGrn1VpVo2 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzE0MDA3NiBTYWx0ZWRfX7WkbdeCxW3DD QCq2XsdD0qNgnh0HMb5DDpup29hnfd0K3cSqpWuRsylpBpS/lTod+hZ7q17f0ZggcPiLS1VFHtJ ZOxfqCcc7IWra2JzrvzHVXaC7UtaHQ4w/ZU3Im0Ea13RQSZ7ods5 X-Proofpoint-ORIG-GUID: y3JdFC5T-SvmajI9z3AqTFBGrn1VpVo2 X-Authority-Analysis: v=2.4 cv=dYawG3Xe c=1 sm=1 tr=0 ts=6a55e5c3 cx=c_pps a=XiAAW1AwiKB2Y8Wsi+sD2Q==:117 a=XiAAW1AwiKB2Y8Wsi+sD2Q==:17 a=6eWqkTHjU83fiwn7nKZWdM+Sl24=:19 a=z/mQ4Ysz8XfWz/Q5cLBRGdckG28=:19 a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=xqWC_Br6kY4A:10 a=RAioF0-LDSMA:10 a=GoEa3M9JfhUA:10 a=VkNPw1HP01LnGYTKEx00:22 a=jiCTI4zE5U7BLdzWsZGv:22 a=3I1J8UUJPc9JN9BFgKH3:22 a=VwQbUJbxAAAA:8 a=JfrnYn6hAAAA:8 a=pGLkceISAAAA:8 a=7CQSdrXTAAAA:8 a=yPCof4ZbAAAA:8 a=RgR6v_fFY-8vhBXvnRcA:9 a=1CNFftbPRP8L7MoqJWF3:22 a=a-qgeE7W1pNrGK8U0ZQC:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzE0MDA3NiBTYWx0ZWRfX3fDYhQj9L2ro xNP+2JHoDQPddiRSpFSa8eD5tKsVC4/FOMlYksQYyqdEyyaGZVVwwL6yZPUpDx+PeHfukeWprfS AlFJayWo4F2LSlWk+jTYzq5TS4b+89o3hZWsH/J8dcuOMX+Yl1g4MwdsTGQv5EGaSV9a8Pq1zi0 aOLzvyqfqoQo7OG7WtbFmvQAiAPbYqI+/ZWt2Glki2jGdwcwG5wdm50n0+BQuIbIStH1sekrTOS SI2IZrkiCSB9DmNPcgYP1Kx5EpF1dRpbv8yOSMAtnjtBoGtAYNqmaa0yM3Ws5NOs1aLLIIHIoIG 9D7SZ9yZRbzRj/uubEpfhy8nzmzKb/S99LVvXaFIESHc5FfMINON+DRnl0/NFHa+bCy36YFT+6D GqCR3BcYMtSpPtK/jMcaq5hezbmDm4K9dGHR3eXPQixlPkwd8XK1YMuH6mQtd3Tb9MiDQNiusF+ xJdwivh84wGAaGA1h+g== X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260714_003136_477812_B02DF371 X-CRM114-Status: GOOD ( 15.28 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add atomic load wrappers, atomic_cond_read_*_timeout() and atomic64_cond_read_*_timeout() for the cond-load timeout interfaces. Also add a short description for the atomic_cond_read_{relaxed,acquire}(), and the atomic_cond_read_{relaxed,acquire}_timeout() interfaces. Cc: Will Deacon Cc: Peter Zijlstra Cc: Boqun Feng Acked-by: Catalin Marinas Signed-off-by: Ankur Arora --- Documentation/atomic_t.txt | 14 +++++++++----- include/linux/atomic.h | 10 ++++++++++ 2 files changed, 19 insertions(+), 5 deletions(-) diff --git a/Documentation/atomic_t.txt b/Documentation/atomic_t.txt index bee3b1bca9a7..0e53f6ccb558 100644 --- a/Documentation/atomic_t.txt +++ b/Documentation/atomic_t.txt @@ -16,6 +16,10 @@ Non-RMW ops: atomic_read(), atomic_set() atomic_read_acquire(), atomic_set_release() +Non-RMW, non-atomic_t ops: + + atomic_cond_read_{relaxed,acquire}() + atomic_cond_read_{relaxed,acquire}_timeout() RMW atomic operations: @@ -79,11 +83,11 @@ SEMANTICS Non-RMW ops: -The non-RMW ops are (typically) regular LOADs and STOREs and are canonically -implemented using READ_ONCE(), WRITE_ONCE(), smp_load_acquire() and -smp_store_release() respectively. Therefore, if you find yourself only using -the Non-RMW operations of atomic_t, you do not in fact need atomic_t at all -and are doing it wrong. +The non-RMW ops are (typically) regular, or conditional LOADs and STOREs and +are canonically implemented using READ_ONCE(), WRITE_ONCE(), +smp_load_acquire() and smp_store_release() respectively. Therefore, if you +find yourself only using the Non-RMW operations of atomic_t, you do not in +fact need atomic_t at all and are doing it wrong. A note for the implementation of atomic_set{}() is that it must not break the atomicity of the RMW ops. That is: diff --git a/include/linux/atomic.h b/include/linux/atomic.h index 8dd57c3a99e9..5bcb86e07784 100644 --- a/include/linux/atomic.h +++ b/include/linux/atomic.h @@ -31,6 +31,16 @@ #define atomic64_cond_read_acquire(v, c) smp_cond_load_acquire(&(v)->counter, (c)) #define atomic64_cond_read_relaxed(v, c) smp_cond_load_relaxed(&(v)->counter, (c)) +#define atomic_cond_read_acquire_timeout(v, c, e, t) \ + smp_cond_load_acquire_timeout(&(v)->counter, (c), (e), (t)) +#define atomic_cond_read_relaxed_timeout(v, c, e, t) \ + smp_cond_load_relaxed_timeout(&(v)->counter, (c), (e), (t)) + +#define atomic64_cond_read_acquire_timeout(v, c, e, t) \ + smp_cond_load_acquire_timeout(&(v)->counter, (c), (e), (t)) +#define atomic64_cond_read_relaxed_timeout(v, c, e, t) \ + smp_cond_load_relaxed_timeout(&(v)->counter, (c), (e), (t)) + /* * The idea here is to build acquire/release variants by adding explicit * barriers on top of the relaxed variant. In the case where the relaxed -- 2.43.7