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=-2.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,T_DKIMWL_WL_HIGH, USER_AGENT_MUTT autolearn=unavailable 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 68FFDC28D18 for ; Wed, 5 Jun 2019 14:44:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 431A520693 for ; Wed, 5 Jun 2019 14:44:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559745897; bh=oHxtFKkYS5StAuSisLKCiV0W777DWpUhOPSQSos7mis=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=BWtkZmFXSTMkkZciY5bsHREsDSxsXP+qWf3+CR55wqgVQ5uqPiSJNf4uqNckMSJDi c4RAtNh9iPFFvLe3rVRwqYgwgrn4r8e8WuXKkXyc2vJi0Zx3cuNghCcsxE8w/LVTjC FXvXQIrDbGTDtE6wIvQzrZo+velFN7zM77HZOyzY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728444AbfFEOo4 (ORCPT ); Wed, 5 Jun 2019 10:44:56 -0400 Received: from mail-qt1-f193.google.com ([209.85.160.193]:44807 "EHLO mail-qt1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727960AbfFEOoz (ORCPT ); Wed, 5 Jun 2019 10:44:55 -0400 Received: by mail-qt1-f193.google.com with SMTP id x47so18193542qtk.11; Wed, 05 Jun 2019 07:44:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=5+amuC/f1g13FqxbZK0H3rjZkiafibYvngvdoJHTeaY=; b=Xaqop4NdhGsU31i8w22hqZOGA5bCkTzg6R5/EC23RiUJCzN5dtF4iVkzqxmY+7J7nX AfCP9j3/4u4rffKpsh9eGXyVuhVeR2HrVAZRtK+P1ffC5kcpdY3epjr2QWP3NZjrkenF 8W3aRGBFCMgBLy8KknjGQHlImKIdbrIFC8KleevyNJ6JsC2MlBLiwtlvnsN0CSzMZr+n XnEvGmv/FOXw5+56Ja1z6QhroJqSBdPwfOCZ7OYZwnFJSflOfHZgSfFHnITUufXKnTDG R7LviF6TFrc6hpxIXyzLX773qaqqUragn0HHbmEHPg5NaM3JF4cyFtWeET4bCo0kJxrL GGlA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to:user-agent; bh=5+amuC/f1g13FqxbZK0H3rjZkiafibYvngvdoJHTeaY=; b=naMpvJgK1oNQ+aoogGJgWT698/YYuF+m6lC7fJW2eK25Mzn6UZDZVhrkuWUKVvk+RX e3rtlaPtV+WTiXBGXkAWobaRT3D3uvaGdyqTWWwEVlrvTeLPdRWsY43aaIJdu0O4mHth zKHUrEpadjX5Q+VMMXxbnM/YYZAhn/9KTy7gLX8xvMDnyjbPgAyfqQxSTAoaCgBqxaHN HsbQazDbkq7BLw6kQCfD82ydpmLlGQ6cw3fhfQW7OEySFyfGUOhXbfWI5r7EDEn7/afB qHOHijo7Amah+uSbIplUxIBACkcUnZjEDRxx5nJ0301SODDuWNRfHfhpb6OT5j92HTBU eUVA== X-Gm-Message-State: APjAAAWBlGIAeS2VKtWLd3fI6Yggf73ZxJjGmwEF3jLSO8lwYHAH0+4o EJkXhdGf1wYlVB7211+8Slk= X-Google-Smtp-Source: APXvYqyHClRti1uqD1HXPdrPMGuakIUjLA2LyMPf4+a8tjzEnJIhKWBZFVZfpe9h9fo08DyAFybxXQ== X-Received: by 2002:a0c:be87:: with SMTP id n7mr14243540qvi.65.1559745893929; Wed, 05 Jun 2019 07:44:53 -0700 (PDT) Received: from localhost ([2620:10d:c091:500::1:c027]) by smtp.gmail.com with ESMTPSA id n19sm9375766qkg.58.2019.06.05.07.44.52 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 05 Jun 2019 07:44:52 -0700 (PDT) Date: Wed, 5 Jun 2019 07:44:50 -0700 From: Tejun Heo To: Patrick Bellasi Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-api@vger.kernel.org, Ingo Molnar , Peter Zijlstra , "Rafael J . Wysocki" , Vincent Guittot , Viresh Kumar , Paul Turner , Quentin Perret , Dietmar Eggemann , Morten Rasmussen , Juri Lelli , Todd Kjos , Joel Fernandes , Steve Muckle , Suren Baghdasaryan Subject: Re: [PATCH v9 12/16] sched/core: uclamp: Extend CPU's cgroup controller Message-ID: <20190605144450.GN374014@devbig004.ftw2.facebook.com> References: <20190515094459.10317-1-patrick.bellasi@arm.com> <20190515094459.10317-13-patrick.bellasi@arm.com> <20190531153545.GE374014@devbig004.ftw2.facebook.com> <20190603122725.GB19426@darkstar> <20190605140324.GL374014@devbig004.ftw2.facebook.com> <20190605143805.olk2ta5p2jnd4mjt@e110439-lin> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190605143805.olk2ta5p2jnd4mjt@e110439-lin> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, On Wed, Jun 05, 2019 at 03:39:50PM +0100, Patrick Bellasi wrote: > Which means we will enforce the effective values as: > > /tg1/tg11: > > util_min.effective=0 > i.e. keep the child protection since smaller than parent > > util_max.effective=800 > i.e. keep parent limit since stricter than child > > Please shout if I got it wrong, otherwise I'll update v10 to > implement the above logic. Everything sounds good to me. Please note that cgroup interface files actually use literal "max" for limit/protection max settings so that 0 and "max" mean the same things for all limit/protection knobs. Thanks. -- tejun