Message ID | 20240925232425.2763385-2-ankur.a.arora@oracle.com |
---|---|
State | New |
Headers | show
Received: from mx0a-00069f02.pphosted.com (mx0a-00069f02.pphosted.com [205.220.165.32]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7EF571591FC; Wed, 25 Sep 2024 23:25:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=205.220.165.32 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727306734; cv=fail; b=pE+UA0twlqBhcfN8CyrbGrvnxrY1N8Fia6ZpeUZ3g4P4kyonyRMHHcREwzxMPG8X+kSzWg9WEW5JN3UY2tgvWQ/DgUk0fdmsF9QubVU1LBRhYumGLNOmqavHJAynXUpJUyEkf7RKiYqGSc4A7CVdJ9xsEQYEMkZlz64LJxxs6OI= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727306734; c=relaxed/simple; bh=h+LFmQ5q9LcaGHi0PrPQz7lccrjdn+vfUczNGQ+nieo=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: Content-Type:MIME-Version; b=O9CkYP1AaiMw2hHuna3Np6T7zaP+IpkU1YYGeSIih0uwoBgmejSW1Zo1YZtpwGjlG12n3gHJxLpq1e68QgniB8pkXfAKxvvMNBWv+3thJwU4bPytpL3ckK9ohJPKJyNEj4eX4UKIU53iD9zmJDOsLRpYhpVNRnjF4bjK2gyMWHI= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oracle.com; spf=pass smtp.mailfrom=oracle.com; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b=bpb0r6Um; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.b=Bxq4CdZe; arc=fail smtp.client-ip=205.220.165.32 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oracle.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oracle.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="bpb0r6Um"; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.b="Bxq4CdZe" Received: from pps.filterd (m0246629.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 48PLnNVC028926; Wed, 25 Sep 2024 23:24:36 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :content-transfer-encoding:content-type:mime-version; s= corp-2023-11-20; bh=rbuyqEwZ9kCiw5l0O3EjN14l2WDqLsKvyF0jfbbj+zc=; b= bpb0r6UmOXZ8ypjMGycg+SQjCzXL2wxKVcV5Wx5eo/UarIiGG7xOQkkjuBgStFU5 jV7S8d5D41b9LFRCJDGInoK7v6myRls3ad1wQj6D2nw8fJDPaqhKnMvn96OR7Wjl jjenWIKfwdTWmVeljBmEtBu9jESiBRD0DVIszpO7wxQ//i9Ye88umSJFQ0bqpkjk i2LcNbDDqNb1aYR6OKxEIH2j0SrkxYtXD5xMq/KfoJ7SSpF5lHQlJkDTae2iL2hX 0saGNiP2zb1dJPIv+taeRK8krsZORERolMLb+U3kZH4yxCGTEKxesE75y/irQWaW dWpPcu55tnzHsbpQZ9DUuA== Received: from iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta01.appoci.oracle.com [130.35.100.223]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 41sp1akkuk-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 25 Sep 2024 23:24:35 +0000 (GMT) Received: from pps.filterd (iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com (8.18.1.2/8.18.1.2) with ESMTP id 48PMpuRI032835; Wed, 25 Sep 2024 23:24:34 GMT Received: from nam10-dm6-obe.outbound.protection.outlook.com (mail-dm6nam10lp2101.outbound.protection.outlook.com [104.47.58.101]) by iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTPS id 41smkhnpff-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 25 Sep 2024 23:24:34 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=GFVN2SrJHVthfW+E1/SpBpsSlZuTQ1j2hOIPn9HPFH1788MWQ7F6i2Lsp6JI5/HT5lwykSPhBFoI3noHXbg5+jpE6OknWqqhNnyUO8wpt+lxBWlckK/0Qi8sZAPw/y9NRYdMODY77uwnXNHYeVJTvkaFC0QcyqskaxgN6MvwvnAY60n6cKNNlCpKub4HqirGyYi2lu4+3YllU4CTE8U4qszrZJbswLJNIWZABrmpRkwtKG8dBHZ08EjJ/qploI9mEeEItml6S8gqivJarJF8RVLfhH0ta2PaXU9REWQeV/gPLiLm3oN5ypYhYwrF4jHmDkV/x/YLJ0NTf1n+YWcD1A== 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=rbuyqEwZ9kCiw5l0O3EjN14l2WDqLsKvyF0jfbbj+zc=; b=QCnfWR9zpmxV0Rubh7J+5Of85tzvCXS/OTqYe3tiPcrYq7NXGELUBP+llikF6UeuXQPbtYN/EgfjKWXs+by04hmjLyuu+Ncwl0v/G635ym0WT9GgJbdHVXNteqcNcBmSJAK3zVvHiit5I+mmm+ihSnJesiXhdV/jrqV10BZBS3wURy5iahvH+EZt+FqiNlp0tKOtE1TkNmen+W+yJNOViA2BaY+w+3MKCR8He12J9dtcjS/c2G1K6Kkm1WJOa0bsnJYkq7WFok7i6NYjt1Buwnag+tCVqz6L4FFTn5tT3X9o7bNzBD++FKG0uW40mJVzKz7qh7xxtzE2aODWZMBOAA== 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=rbuyqEwZ9kCiw5l0O3EjN14l2WDqLsKvyF0jfbbj+zc=; b=Bxq4CdZe2QMbH5Xrv5IMmH6YipThPiyFj57FhBE5WMPeauPJdiAqBIfHKYjc+zrP4Fxi8+7jFE2ls7aIeKs0Mu9hC5Oo+sGPU+PvAh3dS7BxvI+85tHbAg/QRUKs34d/9ZG1RXs2ez+H+kUTWiCOPjmuLamwbdTkVCJlNk/TgXc= Received: from DM8PR10MB5416.namprd10.prod.outlook.com (2603:10b6:8:3f::19) by PH0PR10MB7008.namprd10.prod.outlook.com (2603:10b6:510:287::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8005.13; Wed, 25 Sep 2024 23:24:30 +0000 Received: from DM8PR10MB5416.namprd10.prod.outlook.com ([fe80::e085:31f:84d1:e51a]) by DM8PR10MB5416.namprd10.prod.outlook.com ([fe80::e085:31f:84d1:e51a%5]) with mapi id 15.20.8005.010; Wed, 25 Sep 2024 23:24:30 +0000 From: Ankur Arora <ankur.a.arora@oracle.com> To: linux-pm@vger.kernel.org, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: catalin.marinas@arm.com, will@kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, pbonzini@redhat.com, wanpengli@tencent.com, vkuznets@redhat.com, rafael@kernel.org, daniel.lezcano@linaro.org, peterz@infradead.org, arnd@arndb.de, lenb@kernel.org, mark.rutland@arm.com, harisokn@amazon.com, mtosatti@redhat.com, sudeep.holla@arm.com, cl@gentwo.org, misono.tomohiro@fujitsu.com, maobibo@loongson.cn, joao.m.martins@oracle.com, boris.ostrovsky@oracle.com, konrad.wilk@oracle.com Subject: [PATCH v8 01/11] cpuidle/poll_state: poll via smp_cond_load_relaxed() Date: Wed, 25 Sep 2024 16:24:15 -0700 Message-Id: <20240925232425.2763385-2-ankur.a.arora@oracle.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20240925232425.2763385-1-ankur.a.arora@oracle.com> References: <20240925232425.2763385-1-ankur.a.arora@oracle.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: MW4PR04CA0140.namprd04.prod.outlook.com (2603:10b6:303:84::25) To DM8PR10MB5416.namprd10.prod.outlook.com (2603:10b6:8:3f::19) Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: <linux-pm.vger.kernel.org> List-Subscribe: <mailto:linux-pm+subscribe@vger.kernel.org> List-Unsubscribe: <mailto:linux-pm+unsubscribe@vger.kernel.org> MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM8PR10MB5416:EE_|PH0PR10MB7008:EE_ X-MS-Office365-Filtering-Correlation-Id: 2f0a1dd1-0c59-402b-a1a8-08dcddb93404 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|366016|1800799024; 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:DM8PR10MB5416.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(7416014)(376014)(366016)(1800799024);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 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: 2f0a1dd1-0c59-402b-a1a8-08dcddb93404 X-MS-Exchange-CrossTenant-AuthSource: DM8PR10MB5416.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Sep 2024 23:24:29.2626 (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: /4S3IaC1GZbTcHBi8DcrgH7KUAd395xYqHiG4WqP2xs7qxyxVos8M/8Bwlfh0l6ehOolTjfr2D9BifHUdvRuNvb9tO1rs9QIpMInqgJOtGI= X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR10MB7008 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-25_14,2024-09-25_02,2024-09-02_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 phishscore=0 suspectscore=0 mlxlogscore=999 malwarescore=0 adultscore=0 bulkscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2408220000 definitions=main-2409250164 X-Proofpoint-ORIG-GUID: OGYJDZ4dxEJd9s9sioHTNniV1czBdFPt X-Proofpoint-GUID: OGYJDZ4dxEJd9s9sioHTNniV1czBdFPt |
Series |
[v8,01/11] cpuidle/poll_state: poll via smp_cond_load_relaxed()
|
expand
|
diff --git a/drivers/cpuidle/poll_state.c b/drivers/cpuidle/poll_state.c index 9b6d90a72601..fc1204426158 100644 --- a/drivers/cpuidle/poll_state.c +++ b/drivers/cpuidle/poll_state.c @@ -21,21 +21,20 @@ static int __cpuidle poll_idle(struct cpuidle_device *dev, raw_local_irq_enable(); if (!current_set_polling_and_test()) { - unsigned int loop_count = 0; u64 limit; limit = cpuidle_poll_time(drv, dev); while (!need_resched()) { - cpu_relax(); - if (loop_count++ < POLL_IDLE_RELAX_COUNT) - continue; - - loop_count = 0; + unsigned int loop_count = 0; if (local_clock_noinstr() - time_start > limit) { dev->poll_time_limit = true; break; } + + smp_cond_load_relaxed(¤t_thread_info()->flags, + VAL & _TIF_NEED_RESCHED || + loop_count++ >= POLL_IDLE_RELAX_COUNT); } } raw_local_irq_disable();