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 X-Spam-Level: X-Spam-Status: No, score=-7.2 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FSL_HELO_FAKE,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1, USER_IN_DEF_DKIM_WL autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DF98DC3F2D4 for ; Sun, 1 Mar 2020 16:20:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B8EEA246A1 for ; Sun, 1 Mar 2020 16:20:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="BmBgW1BX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726695AbgCAQUL (ORCPT ); Sun, 1 Mar 2020 11:20:11 -0500 Received: from mail-pf1-f195.google.com ([209.85.210.195]:40105 "EHLO mail-pf1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726614AbgCAQUK (ORCPT ); Sun, 1 Mar 2020 11:20:10 -0500 Received: by mail-pf1-f195.google.com with SMTP id l184so1707709pfl.7 for ; Sun, 01 Mar 2020 08:20:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=ol996i7Ly7uLXMGPOcxJk9a2/P7UfTmFHb83woUuOo4=; b=BmBgW1BXpb61N9UVhWc3UCobtjZmRY8cfjAit8K3GJNut56umMykryyzI9AzxVCNPu zOEVDsY3sT4UDzTHMxTNl9cA7M9jDoCm9XTPeWxZcTzpfVvX/4GlQyjehDQw0YtTjoWL EB9DXjWAslee7XYEPpiMDSk/CpSA8B7PG1YgEGGc+U8RJWtG64RB7rrOGqzA7b4rQS5s omthZP5UEN5t/YqPCx4Z7BD6vT2yjRFsX2lYXKeIaPmSzb2BFnmgmLEeGuprZ4xHPtlk MsDaZbTpDj609q6Y8zXZ0uP9KGKGRdg1t2ky59PPhmZPGZJqesifD/zmyl5NnA3qyDyZ FcaA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=ol996i7Ly7uLXMGPOcxJk9a2/P7UfTmFHb83woUuOo4=; b=XQ3274F+vMpJN3bF68Qu/R80UdMFFaCb/rywQNtCypOmgzRJQDexHca8kEkeJqFtCL WH0E7SDS5ON5h0dbY3dAQsCBObQ148bwlZmOZBjiTv4SjTZ9Y2NeUD9rzN8pWgWxrO3P ea2eENTDnhyij+qK5lRtx0O+90WrLe3zjmJAKZOU1qez+BnoRggMkMZHUKFfN3I3kWx/ cNSI9tsI124Kz41KGSy2XvfF219jREEO23/diacCMPduDU6aDW/kVyCikL+7zdwv2/co YJfLtSQSZGNZSaeQ8qeJ4aSPHIZlM/vDoZWv2yv5NG8ujSAA0FxDC4JHQLv6QiIsAZur YKOA== X-Gm-Message-State: APjAAAWNR3w5rzB1WFrwymC/Eqp2o2OmHw61U6uZ4oayp9HYAwHDp3NH H0H7K59zMDg3pd0JjZxRzA5qZg== X-Google-Smtp-Source: APXvYqybwsty6KbQzUZw6ydXZynsFTmZ7U2b15x7Sf8aB1XCoBDm81Hv5r+UKknAcAJrYKKAt382gA== X-Received: by 2002:a65:6147:: with SMTP id o7mr15882420pgv.442.1583079609158; Sun, 01 Mar 2020 08:20:09 -0800 (PST) Received: from google.com ([2620:15c:211:202:ae26:61fb:e2f3:92e7]) by smtp.gmail.com with ESMTPSA id e2sm9004532pjs.25.2020.03.01.08.20.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 01 Mar 2020 08:20:08 -0800 (PST) Date: Sun, 1 Mar 2020 08:20:03 -0800 From: Marco Ballesio To: Roman Gushchin Cc: tj@kernel.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, lizefan@huawei.com, hannes@cmpxchg.org, corbet@lwn.net, rjw@rjwysocki.net, pavel@ucw.cz, len.brown@intel.com, linux-doc@vger.kernel.org, linux-pm@vger.kernel.org, minchan@google.com, surenb@google.com, dancol@google.com Subject: Re: [PATCH] cgroup-v1: freezer: optionally killable freezer Message-ID: <20200301162003.GA186618@google.com> References: <20200219183231.50985-1-balejs@google.com> <20200229005131.GB9813@google.com> <20200229184300.GA484762@carbon.DHCP.thefacebook.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200229184300.GA484762@carbon.DHCP.thefacebook.com> User-Agent: Mutt/1.12.2 (2019-09-21) Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org On Sat, Feb 29, 2020 at 10:43:00AM -0800, Roman Gushchin wrote: > On Fri, Feb 28, 2020 at 04:51:31PM -0800, Marco Ballesio wrote: > > Hi all, > > > > did anyone have time to look into my proposal and, in case, are there > > any suggestions, ideas or comments about it? > > Hello, Marco! > > I'm sorry, somehow I missed the original letter. > > In general the cgroup v1 interface is considered frozen. Are there any particular > reasons why you want to extend the v1 freezer rather than use the v2 version of it? > > You don't even need to fully convert to cgroup v2 in order to do it, some v1 > controllers can still be used. > > Thanks! > > Roman Hi Roman, When compared with backports of v2 features and their dependency chains, this patch would be easier to carry in Android common. The potential is to have killability for frozen processes on hw currently in use. Marco