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]) by smtp.lore.kernel.org (Postfix) with ESMTP id 89595C4332F for ; Wed, 8 Nov 2023 20:46:35 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id DFF026B02A8; Wed, 8 Nov 2023 15:46:34 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id DAEDB6B02A9; Wed, 8 Nov 2023 15:46:34 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C28226B02AA; Wed, 8 Nov 2023 15:46:34 -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 B4BD36B02A8 for ; Wed, 8 Nov 2023 15:46:34 -0500 (EST) Received: from smtpin10.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay05.hostedemail.com (Postfix) with ESMTP id 7113440D11 for ; Wed, 8 Nov 2023 20:46:34 +0000 (UTC) X-FDA: 81435970308.10.3658BC5 Received: from mx0b-00069f02.pphosted.com (mx0b-00069f02.pphosted.com [205.220.177.32]) by imf17.hostedemail.com (Postfix) with ESMTP id 360A44000D for ; Wed, 8 Nov 2023 20:46:31 +0000 (UTC) Authentication-Results: imf17.hostedemail.com; dkim=pass header.d=oracle.com header.s=corp-2023-03-30 header.b=GFxdb9TY; dkim=pass header.d=oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b=rPmc8oJW; dmarc=pass (policy=none) header.from=oracle.com; arc=pass ("microsoft.com:s=arcselector9901:i=1"); spf=pass (imf17.hostedemail.com: domain of ankur.a.arora@oracle.com designates 205.220.177.32 as permitted sender) smtp.mailfrom=ankur.a.arora@oracle.com ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1699476391; 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: in-reply-to:in-reply-to:references:references:dkim-signature; bh=oAaMwe5rZgx5atr+hrbp8PLIVE3U/3kA0sciEZWMQ3s=; b=8blY9UpJ/Aw1I9AmCm0NLDzwFiy14BePReiKu/PFba2/UQZorqpHPyf65r0DZFkUgT6xhS MQEQ3j2DUbeCmceFthCKU4fyY48MsUSUARwAb/3lqCDet72aMF0UZjY21+bYLiQR4+QAJf BjdAh7dZRs/vN7+QZNh3p2jvljvMWMU= ARC-Authentication-Results: i=2; imf17.hostedemail.com; dkim=pass header.d=oracle.com header.s=corp-2023-03-30 header.b=GFxdb9TY; dkim=pass header.d=oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b=rPmc8oJW; dmarc=pass (policy=none) header.from=oracle.com; arc=pass ("microsoft.com:s=arcselector9901:i=1"); spf=pass (imf17.hostedemail.com: domain of ankur.a.arora@oracle.com designates 205.220.177.32 as permitted sender) smtp.mailfrom=ankur.a.arora@oracle.com ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1699476391; a=rsa-sha256; cv=pass; b=n/+ajFf1MjtGl6VffLQdPs2BJcTwAJ5h1+Rbe/XqwcnA/Apr72YdrRZhzUHV19OVwOzzlT PCdHZVJDj4cRHpSZh8dc4mHwglCrWXicZT/qLQxda31dTOIbRQPbr8DIBCCPubyKsdArOw 7SEvNfZIPdHkub5TIiPoLLT4hClAQwE= Received: from pps.filterd (m0333520.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3A8Jhlwj001586; Wed, 8 Nov 2023 20:46:05 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=references : from : to : cc : subject : in-reply-to : date : message-id : content-type : mime-version; s=corp-2023-03-30; bh=oAaMwe5rZgx5atr+hrbp8PLIVE3U/3kA0sciEZWMQ3s=; b=GFxdb9TY8UIKJTcgY+vWLte6X8l7BG8cCgUdPbJ5r4k5sEKQ3JS35Zfwq28eNpqTrjwM p3njJOzaXNoAlqb4Onb/9LSkWv0i69W+yJH674tOe0ANZGsuRayQ5qxg5+Cg5KGeAKxr 0ZiIgS4VcpyRCGMsuoTDSDc3wqhe7TYM0dy6G65CmwxxEV7J2iqNYuN/EilUtgEEV7+n afpiezw3ZHQywwJ61PugwPJFIipmFQN0UyUeEplxXg68pUWKQurZbbdg9JNZT5jk1AGu Yb8SFV6Iro2WdALf2vv/Nv8ew7V+pl5kYn40Ll5eojILC51BtWEuvz8KXM7w/FYATmAK 0w== Received: from iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta01.appoci.oracle.com [130.35.100.223]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3u7w202gjr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 08 Nov 2023 20:46:05 +0000 Received: from pps.filterd (iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com (8.17.1.19/8.17.1.19) with ESMTP id 3A8KO28u023887; Wed, 8 Nov 2023 20:46:04 GMT Received: from nam11-co1-obe.outbound.protection.outlook.com (mail-co1nam11lp2169.outbound.protection.outlook.com [104.47.56.169]) by iadpaimrmta01.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTPS id 3u7w25m7wr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 08 Nov 2023 20:46:04 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=d2935wuvMOW7T4akK1BYGGbb6LP28ZJhW0KCAb+ncaON147S1inlKTDEeixqH4hYUBhg2lO6HWaH/hWQEWO//414aS3UisBNA9YP5sMAjpthF4uZJ9WNs0LUOTCDcGTJEExY7dOan6jt9fKl7bCbT2uwr82wniwV8ieVQTwLk26pCiQ3+ISR//XjMA+lwTNBE65XiAvl8B/RKPg3bL4lflY9UmpXb49d4v/9/gt1m6pWlCI9VtdczE0CBUkstRuS5Kq4KbNueXUAf9oH8ZW2r2rCWChNmZbYOQQ642W995ydWe24Vm/5i8WcoqzWdEkED1uALrK7Ru/0X6c5IC6jyA== 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=oAaMwe5rZgx5atr+hrbp8PLIVE3U/3kA0sciEZWMQ3s=; b=IOn4AiHnlKXApXoX42nBfJBweJEgo2+eFMTwQQN6pNwR/eqkiAZtu0LhfzFcUWhDhO1xsVZK4x6Sx9x+uccJjm8BXtdufOgxfdUVDYw3zalKiExfJKrzL8ytUgPhEUNYREfHk0qGKdlsYGZg2MBdYgfF75WRbpEjimZ8Mg6cdusYcFf1VWIuDAcgRc6+ofq2EOKQgGlAmDGiwrxi0zDdf3Ui/QbJIIKpYLddy5ojt8gmiXslQk3Df8WvDp0SHc+zs7+PuOaC2Ni+Sjr9dn5lbOwPdxnrCxbrjd9Tcocvg1VdyqasQ2UZth6Mq06l7fVLc2F1d8weCguOffgMdX/GOQ== 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=oAaMwe5rZgx5atr+hrbp8PLIVE3U/3kA0sciEZWMQ3s=; b=rPmc8oJWsfUdtTSZr0OHuGnmnVAQcyatG+ZAcUxpNl0uPLtvSdNJo1Veo0PyHunz7hlWD37WmPDdqEKvmKNkG2GAwxyxsVAn1fW6unBnnmz8MBhEGyrnYVrHfgDENdezvIfx15DF8Se8JIGqnQUOlJAnqp/YPJBlv5uSUlRnTSs= Received: from CO6PR10MB5409.namprd10.prod.outlook.com (2603:10b6:5:357::14) by LV3PR10MB7771.namprd10.prod.outlook.com (2603:10b6:408:1b0::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6954.28; Wed, 8 Nov 2023 20:46:01 +0000 Received: from CO6PR10MB5409.namprd10.prod.outlook.com ([fe80::10fc:975b:65bf:1d76]) by CO6PR10MB5409.namprd10.prod.outlook.com ([fe80::10fc:975b:65bf:1d76%4]) with mapi id 15.20.6977.018; Wed, 8 Nov 2023 20:46:01 +0000 References: <20231107215742.363031-1-ankur.a.arora@oracle.com> <20231108085156.GD8262@noisy.programming.kicks-ass.net> <87bkc4lfxp.fsf@oracle.com> <20231108101330.GK3818@noisy.programming.kicks-ass.net> <877cmsgsrg.ffs@tglx> <20231108112227.62f0c5a8@gandalf.local.home> <20231108164916.GR8262@noisy.programming.kicks-ass.net> User-agent: mu4e 1.4.10; emacs 27.2 From: Ankur Arora To: Peter Zijlstra Cc: Steven Rostedt , Thomas Gleixner , Ankur Arora , linux-kernel@vger.kernel.org, torvalds@linux-foundation.org, paulmck@kernel.org, linux-mm@kvack.org, x86@kernel.org, akpm@linux-foundation.org, luto@kernel.org, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, mingo@redhat.com, juri.lelli@redhat.com, vincent.guittot@linaro.org, willy@infradead.org, mgorman@suse.de, jon.grimm@amd.com, bharata@amd.com, raghavendra.kt@amd.com, boris.ostrovsky@oracle.com, konrad.wilk@oracle.com, jgross@suse.com, andrew.cooper3@citrix.com, mingo@kernel.org, bristot@kernel.org, mathieu.desnoyers@efficios.com, geert@linux-m68k.org, glaubitz@physik.fu-berlin.de, anton.ivanov@cambridgegreys.com, mattst88@gmail.com, krypton@ulrich-teichert.org, David.Laight@aculab.com, richard@nod.at, mjguzik@gmail.com Subject: Re: [RFC PATCH 00/86] Make the kernel preemptible In-reply-to: <20231108164916.GR8262@noisy.programming.kicks-ass.net> Date: Wed, 08 Nov 2023 12:46:00 -0800 Message-ID: <87v8acezxz.fsf@oracle.com> Content-Type: text/plain X-ClientProxiedBy: MW4PR03CA0269.namprd03.prod.outlook.com (2603:10b6:303:b4::34) To CO6PR10MB5409.namprd10.prod.outlook.com (2603:10b6:5:357::14) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO6PR10MB5409:EE_|LV3PR10MB7771:EE_ X-MS-Office365-Filtering-Correlation-Id: 20ccc2ec-3be3-410c-4750-08dbe09bb7f7 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:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:CO6PR10MB5409.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(39860400002)(366004)(396003)(376002)(346002)(136003)(230922051799003)(451199024)(64100799003)(186009)(1800799009)(2906002)(2616005)(6512007)(6506007)(6486002)(478600001)(966005)(83380400001)(5660300002)(66556008)(66946007)(26005)(7416002)(4744005)(41300700001)(54906003)(6916009)(316002)(4326008)(8676002)(8936002)(66476007)(38100700002)(36756003)(86362001)(7406005);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?qFO0f0wDEWpa70PO1X0W9xTgZIYXB0bezsJKc1QAwvni4dLYLJ6LSwPkp7ZR?= =?us-ascii?Q?5r6jFGAQ9q2qdHcZNOhd8DXt8lEIp8yfFZXNjIj2yEnfOmCs+iL9cecJ55km?= =?us-ascii?Q?/dH3N7NTRdPSMzTZHlvmiUL2GRL5XMZUkOgArxz1lkJsuFROLm26er1henCc?= =?us-ascii?Q?ry99qYPf2b2KKR6qsDfJG2ZzYo0WRS3NnLjZsmKiWqKChlymDUyqcdqsrRSE?= =?us-ascii?Q?KbEsK5l2fEu4T8gh4Elw6zQ6n7cEgjYL8BWwmSXT0B5FwudV500ElSMElf2l?= =?us-ascii?Q?0lQdSJ1ee1Sh6uVMLXYKqNnNNkMPj+aMcFYgA9KqslNeTJmSP0+OEFf1FmDv?= =?us-ascii?Q?YWYYWMzoY8oGE6T2zuvefhNrpar8uJTela4L0YBRpLgWAO7F/6Q5cJRik0c+?= =?us-ascii?Q?ppyhFFlw3R631PMxnyECVV7+Rds+QQ3VvArJSSrKAJs1HiPYbpcISHYvgGDl?= =?us-ascii?Q?JciSqY0qlccwmAunTsH3VDJ0AN9N25jX0wRPuaROX29mBxIQs0scbKwzX8uw?= =?us-ascii?Q?ipfjWyxewcUpMIJGjgDpSP5df32T2kI6gJqEOl6d8CZm755nCmqD30Rykd2C?= =?us-ascii?Q?9UfyRsLE/aE4UpLi9pHOk2VfVilEhogBoixdtIoduDdqhZepD6/RepSeZUj0?= =?us-ascii?Q?jQsNwlHcmokFOELgXatzS4zQmRXIhxUsvBj2qqFWAaWKJJ3+q09XzNfb+L/O?= =?us-ascii?Q?h6TLe4Po9V4IQ/6j6fHehCqjH+d8DYM1XkSns98T/U11Ieb/JYOIkMp9SJMG?= =?us-ascii?Q?4Qp1wfmtteUfvJXdQizhMem5/HTVqdw6Rj+HuLGM4Y9121NvJcC6dMdO8G9h?= =?us-ascii?Q?QaIcQvnQIsjNWU+pS/iIhza1LofLjUER7EtffoHl4JeghrNoprU8rFlz2lGx?= =?us-ascii?Q?255Ell/wIf5v/XL5MHhEvkyL0m62TyBiRJ5BHteRn3nLuyHMFDjOoW2/w/1x?= =?us-ascii?Q?FOvpz4puvVC8EAv+n/0UL6wT+oeC/13XOAa4qFkDK70eT790IQeWoqbW9UMN?= =?us-ascii?Q?521/8VWPhrMtPMdFv31d48RI7S1A/UCXM27IHuDnvO4A8d1zYzar+lGNYrry?= =?us-ascii?Q?sIPGTU+K3SAqrTiGBx5s38q63Szlj0hu69eILY5oLuOe1DG9GUlHp1Jsin4M?= =?us-ascii?Q?vYFDGs5J5ni44jk3gaXjfNJ6JzA4h0UB82zlsrGZr7qQk3XvBjM0liAJVG87?= =?us-ascii?Q?gbU86uVxhJ4SDloXp/iurkWK2DNNa/W2g94gFgImOAAH/HRg/Gk4bTRtTZ9C?= =?us-ascii?Q?hEcC169Qa/teaXt5JEvyCoQqPXKkaYR2qmC75kG2p/yXQpusDTh6oyvxSJp8?= =?us-ascii?Q?3OGwVKQ026gkcLLZgtnif7s3Fn1c2SVTNLjZ2B5p4meUTvuVMPNwUmEYfohb?= =?us-ascii?Q?Hmk21gqwfvhLtwkXXCVRKkoCbVStJvmMk0XcnjiOXRwa9NfmTLi3AgbjNLTK?= =?us-ascii?Q?oyrSY1Xl0Zg7dkZeSohAQuyIxkIVlph1+wkboz9p/SjRHyzSOu4hpok4VeSP?= =?us-ascii?Q?ycHJoJf3HyCx3Ums2NJngKhHEZGvr5+M/dw95yOD2PT+OtqAUh2N4JdxszLR?= =?us-ascii?Q?t+mtDmmm+oUojsQoftHC0t5j1cCfdmNwVjmW7mn9H0jynAHZn+a5mwmtaFBy?= =?us-ascii?Q?OQ=3D=3D?= X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: =?us-ascii?Q?eEPLDtIA23pX9byEGZeBwZrryAbgWXObz1o9s3kEf3KY1xsPKAF8q9ftUxrp?= =?us-ascii?Q?GVBxgU1O3aDz5Edm1XUYy6HMM4vmypj02guuZRjvTu5hrKVqosowFm5gNmS6?= =?us-ascii?Q?av8M9U8l64dJk6R7Dkr5iP4rEoz/AtBY9dfbuKI4Yegx6VIIQG/LHoQlSwqx?= =?us-ascii?Q?CVd5o0nc+hHKVQEb/amsXvKSOWoMTXEJ84grg8hqwxMQyqQCKE1V9ovDGOmV?= =?us-ascii?Q?do/BShXu9FIXkV8+c4Qzhwr98IvKuoa+afmgdvKyIG7RXv2nrhf9Kokr7Rk4?= =?us-ascii?Q?VPOshp6SMbkGXFJb2s3ptIiqWYeK3w0G1qKhX9WiGAKy/ugf1wg9qPWbiycJ?= =?us-ascii?Q?rWoXWr6ufCm960VE3BxbgrhSAQ88nLyhRjzurXYuhNn0Q/ucEJtiGW8ZnyJ1?= =?us-ascii?Q?ORNJeiyx1mPZMZ5+WyxTuvRkgSmCEojUsGgSkbJ7eJRwsf8lu4lNbJ0G8hlq?= =?us-ascii?Q?uevHpzfFGLBqb/CAHn2/k7vtXHUbXeQf8EdHRUiSlsmkCxJ0BHkyS7ziUg8N?= =?us-ascii?Q?2S2cpt9jzAZy4a1/+nvXThj1/iDJKZtvopWxLelmyWeGIut6rbfrNA5349RL?= =?us-ascii?Q?30fP6lcVzK1r48jOX/5l+1m+LHsRGlIJ3Q0jvdPhcZbMd6Gst5rXa3qyTUqM?= =?us-ascii?Q?7L6uPC7pHBMNMUWAfFGEp3Wxwz1/Oat2Zggb93XgnYYU/lgDAZuXARCeuUb3?= =?us-ascii?Q?XmaxijsWWEq3TXTaHu2Akmmpb3gzTrCSnWQn6qazPrYJv16Xki9cwTNZjkSZ?= =?us-ascii?Q?vtXF2qBYQTO4krX47s2f96nCg1+MHvXDtShQ3kzFhAbS8JaAx8Odxbs9dxCk?= =?us-ascii?Q?jAVuUFiC6JN+8a8m7QiCnfYfeNqrOFgONwjeuM/J/aVnlgUoiMDNYjLt7ly/?= =?us-ascii?Q?fQ9aA7o3hgjfQj6yoJgnC49YRxDhTo9kPCircP3vYT30mmp87bE44kT/LO/j?= =?us-ascii?Q?sKZdfat9GDZ5XqxgaYko7yGjWs599O+kjC5+3gir3PUasiR9/NHsnd28bljY?= =?us-ascii?Q?Rh0mv7EwZySP1HA8/rroBr6EMN+CvxKq4O8lPcYpvpPPIs+Io8HVjw0ujX0P?= =?us-ascii?Q?qFVs6X2W2l7NH4Wc2AbL36twHjMaqqyvX5PLnBLbCXhDCBOdqlOSFUarYjXJ?= =?us-ascii?Q?V8/eTYqxwNDhUt39xOhopB7ZNM9y/k0PZByrYdoHSiggpaZLi1oh8FRXvLm/?= =?us-ascii?Q?5DNSSP5sJQIbQxzNOAjTkqgGZ5rdbH6mf+PSCmi7dIt/DfQcg8BOqU4EMlAI?= =?us-ascii?Q?oNw55BbuGmAzsj5RyVyOC5p69tGsTa1nvszJYApXmff/gYNOCLKuZjuZlliv?= =?us-ascii?Q?kT/OKQzACftV3iY1b2r3iSAl8uWLIPtMe2xqhhvwIrr4VkVGogVt342eTojJ?= =?us-ascii?Q?V/PPIg1BGgyW0selmk+gXenA65Y1QQMptgYnsXXtZ3eVrlWiywsR19xwltgF?= =?us-ascii?Q?e37d//ski6xFA1k7ygvGyMtVgYWUf0slcaqcQxAPQIwDJA7+ltkkhbtGFuB0?= =?us-ascii?Q?E0VjyORgAY2YAhJiFYxsTsU9Q1Le30hQRA42nUV1997yqCH6jLi1kY7R2Q?= =?us-ascii?Q?=3D=3D?= X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: 20ccc2ec-3be3-410c-4750-08dbe09bb7f7 X-MS-Exchange-CrossTenant-AuthSource: CO6PR10MB5409.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Nov 2023 20:46:01.5240 (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: emM041U8yuhg7Pk/FXqhpX2jerOk4ssJyqnIK1YRPEEGiZEY8zU1HS0Fzw48PNdvWrseiXhdQGTcLyqk129VXwCACzEamPLji113pr/Ru7k= X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV3PR10MB7771 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-08_10,2023-11-08_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=547 phishscore=0 spamscore=0 mlxscore=0 adultscore=0 malwarescore=0 bulkscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311060000 definitions=main-2311080170 X-Proofpoint-ORIG-GUID: K02R-5XmdMZSpq9unjt-saToG5cTwIht X-Proofpoint-GUID: K02R-5XmdMZSpq9unjt-saToG5cTwIht X-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 360A44000D X-Stat-Signature: y4y1yf69xrhg1u19gpz4b79qzn9e65st X-HE-Tag: 1699476391-290393 X-HE-Meta: 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 GrSwVmMv pwhMeIPi/3N6/60Ca8oEnAxfM8ANfhTQpb3SWQ5jQKEjCBr2RhPGXpkgwtT9K0jZjd42UOtdJVQ3J9h7qXCmqmcKUaXrTUr4PI1kE52/4hFhBDxfKyaLFss1ruAF5EM3dwIstOOyr7x8GAggeTsZ+eNdUrBCfR0MFobIhhVKngrAm2cVVNf39Q4D5h/RSezyRpvinBxvgOn6AMCzsf9t3R4D7r7apk/0OgZgV8fNJSt6TaDp1Wtz7zKyLwWGkFXvX1JpnOisCMG6qlyY8f/rNhLtSYJ/FeJ+vG10Evv4DVgLPaG+fxg67wydVq23RrbsSmR2LHgYbtsjd59wfWcwKf0Lt6JONP0sRqdqeD+dBe+2b8pCiSMqLgrlHO1kv3odQnV0mdNmFh9EMgfXxDekexTWe8hEoIBSoHXBMTVzBu7zu3mT408jHVYPzyw== 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: Peter Zijlstra writes: > On Wed, Nov 08, 2023 at 11:22:27AM -0500, Steven Rostedt wrote: > >> Peter, how can you say we can get rid of cond_resched() in NONE when you > > Because that would fix none to actually be none. Who cares. > >> > Look at my PoC: https://lore.kernel.org/lkml/87jzshhexi.ffs@tglx/ >> >> And I've been saying that many times already ;-) > > Why should I look at random patches on the interweb to make sense of > these patches here? > > That just underlines these here patches are not making sense. Yeah, I'm changing too many things structural things all together. Let me redo this. This time limiting the changes to the scheduler adding a preemption model which adds the lazy-bit and which can behave in ways that are similar to preempt=none/full differently by toggling the treatment of lazy-bit. This keeps the current models as it is. And, once that makes sense to people, then we can decide how best to remove cond_resched() etc. -- ankur