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x-vs=clean score=-100 state=0 X-ME-VSCategory: clean X-CM-Envelope: MS4wfBDhf9xAYCUV6mmQNMwZ4oSym0p7zTsnyxxq83bahnKgl3kgNyXAhOEaKuKgwRh/cIqtL3o4mYy714gQuQJKvKiU+W9CMdCT7CViZleGtVUMGlYm5/S1 j+ZzMuqCkZFTiptwWoYSxbPoTfmfEMVnPQkI7uiV7skP7uDmGCFVrxRJgK5BDcsELdX3C9Qu033Z/4bN0ks2uhVfXz/Cuf+1pl5jg9v9saxMooH0Mm3d+yNr X-CM-Analysis: v=2.3 cv=FKU1Odgs c=1 sm=1 tr=0 a=UK1r566ZdBxH71SXbqIOeA==:117 a=UK1r566ZdBxH71SXbqIOeA==:17 a=wRwT6uffUbIA:10 a=t_PdEiP4ckcA:10 a=F7qjIGpQ-GgA:10 a=kj9zAlcOel0A:10 a=xqWC_Br6kY4A:10 a=Kd1tUaAdevIA:10 a=Lf-vpJhqX20A:10 a=zXgViuNbOfGlvFm-578A:9 a=CjuIK1q_8ugA:10 X-ME-CMScore: 0 X-ME-CMCategory: none Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752227AbeDPQj0 (ORCPT ); Mon, 16 Apr 2018 12:39:26 -0400 Received: from mail-by2nam01on0127.outbound.protection.outlook.com ([104.47.34.127]:44597 "EHLO NAM01-BY2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751002AbeDPQjZ (ORCPT ); Mon, 16 Apr 2018 12:39:25 -0400 From: Sasha Levin To: Pavel Machek CC: Linus Torvalds , Steven Rostedt , Petr Mladek , "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "akpm@linux-foundation.org" , "linux-mm@kvack.org" , Cong Wang , Dave Hansen , Johannes Weiner , Mel Gorman , Michal Hocko , Vlastimil Babka , Peter Zijlstra , Jan Kara , Mathieu Desnoyers , Tetsuo Handa , Byungchul Park , Tejun Heo Subject: Re: [PATCH AUTOSEL for 4.14 015/161] printk: Add console owner and waiter logic to load balance console writes Thread-Topic: [PATCH AUTOSEL for 4.14 015/161] printk: Add console owner and waiter logic to load balance console writes Thread-Index: AQHTz5h7IvK2v80d0k6VVqDoPwJEM6P4GK8AgAnYKwCAAX5DAIAAHfKAgAADdYCAAAWWgIAABF0AgAACQQCAAAQXAIAAAuyA Date: Mon, 16 Apr 2018 16:39:20 +0000 Message-ID: <20180416163917.GE2341@sasha-vm> References: <20180409001936.162706-15-alexander.levin@microsoft.com> <20180409082246.34hgp3ymkfqke3a4@pathway.suse.cz> <20180415144248.GP2341@sasha-vm> <20180416093058.6edca0bb@gandalf.local.home> <20180416153031.GA5039@amd> <20180416155031.GX2341@sasha-vm> <20180416160608.GA7071@amd> <20180416161412.GZ2341@sasha-vm> <20180416162850.GA7553@amd> In-Reply-To: <20180416162850.GA7553@amd> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;DM5PR2101MB0888;7:qKP8DtScGdKaX4JukNPZ8sLntD/YK944LEbt5aZJDC2EtlKVXIDkuhH0AW6Pt+EyKmzsKPrnw1ZJROf4OgyqCT5MLoqNmFkkiAt2IyWWSwaXRzMgaER9yN8hFSDuMr5o7Z757hWcSHAtD4pgj708t9SY5c6jnOhSTdnf6p9iRVzGPMAuIOzsi4EmS6l4nUa7ALrHrnB8d6Hu9zlbkCd5wm5GMOBBeRcjHee4icS9BsDxJyiuLtTTudqtq1YzJAmL;20:sEWYglG1A8v0fkwyERn4OgKzaXuc7X9q9qZ8aXBik4d+x3Gh2jzIgCpfoR2OPPB9ueydTBfu2TO01TcMeVJvkN2vx6+3baOturu+CnHByMs0WjovOoZXij24e+Mi2vTdM1cZnHAuLbcfM7l5Y9xHudaYtLx7GrHxLVm9JIvyT2I= x-ms-exchange-antispam-srfa-diagnostics: SOS; x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7193020);SRVR:DM5PR2101MB0888; x-ms-traffictypediagnostic: DM5PR2101MB0888: authentication-results: spf=none (sender IP is ) smtp.mailfrom=Alexander.Levin@microsoft.com; x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:; x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(8211001083)(61425038)(6040522)(2401047)(8121501046)(5005006)(93006095)(93001095)(3231232)(944501347)(52105095)(3002001)(10201501046)(6055026)(61426038)(61427038)(6041310)(20161123564045)(20161123560045)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123562045)(20161123558120)(6072148)(201708071742011);SRVR:DM5PR2101MB0888;BCL:0;PCL:0;RULEID:;SRVR:DM5PR2101MB0888; x-forefront-prvs: 0644578634 x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(7916004)(366004)(39380400002)(376002)(39860400002)(346002)(396003)(189003)(199004)(10090500001)(66066001)(7736002)(446003)(11346002)(305945005)(6512007)(54906003)(9686003)(97736004)(33896004)(6486002)(229853002)(6436002)(316002)(7416002)(68736007)(76176011)(186003)(86612001)(72206003)(106356001)(86362001)(6116002)(3846002)(5660300001)(476003)(93886005)(8936002)(81156014)(81166006)(8676002)(2906002)(33656002)(26005)(25786009)(99286004)(1076002)(5250100002)(22452003)(2900100001)(105586002)(6506007)(4326008)(14454004)(478600001)(10290500003)(102836004)(33716001)(3280700002)(59450400001)(39060400002)(3660700001)(486006)(53936002)(6916009)(6246003)(217873001);DIR:OUT;SFP:1102;SCL:1;SRVR:DM5PR2101MB0888;H:DM5PR2101MB1032.namprd21.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; x-microsoft-antispam-message-info: opvXDHwOYAmYrcmeHdu+c4VczdHy5iiU3BIc/+KeoDkJJLG9o1Np/4gNzFyD3bRHIiFFOLblbQQ+vkkwdPQ9w9HnTz0x6ZIg/rcaoooxEA7PLt9IkLe0LlOn/EBMXaejHar8ApcmmsXbXoSlJNNt3iUYDa1i+Y6jCPO33WrWvinM9qSrAe3OKNe3nkiONoDt spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="us-ascii" Content-ID: <72CFA7D0500218408DD130DE38BEB7B7@namprd21.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Office365-Filtering-Correlation-Id: cdff0b17-df62-4cbc-d20a-08d5a3b89a65 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: cdff0b17-df62-4cbc-d20a-08d5a3b89a65 X-MS-Exchange-CrossTenant-originalarrivaltime: 16 Apr 2018 16:39:20.1326 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB0888 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On Mon, Apr 16, 2018 at 06:28:50PM +0200, Pavel Machek wrote: > >> >> Is there a reason not to take LED fixes if they fix a bug and don't >> >> cause a regression? Sure, we can draw some arbitrary line, maybe >> >> designate some subsystems that are more "important" than others, but >> >> what's the point? >> > >> >There's a tradeoff. >> > >> >You want to fix serious bugs in stable, and you really don't want >> >regressions in stable. And ... stable not having 1000s of patches >> >would be nice, too. >> >> I don't think we should use a number cap here, but rather look at the >> regression rate: how many patches broke something? >> >> Since the rate we're seeing now with AUTOSEL is similar to what we were >> seeing before AUTOSEL, what's the problem it's causing? > >Regression rate should not be the only criteria. > >More patches mean bigger chance customer's patches will have a >conflict with something in -stable, for example. Out of tree patches can't be a consideration here. There are no guarantees for out of tree code, ever.