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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 EF8B8C3279B for ; Fri, 6 Jul 2018 11:49:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AA2DA2075B for ; Fri, 6 Jul 2018 11:49:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AA2DA2075B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932630AbeGFLti (ORCPT ); Fri, 6 Jul 2018 07:49:38 -0400 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:35238 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753294AbeGFLtg (ORCPT ); Fri, 6 Jul 2018 07:49:36 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 45F9718A; Fri, 6 Jul 2018 04:49:36 -0700 (PDT) Received: from [10.1.206.36] (e113632-lin.cambridge.arm.com [10.1.206.36]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 59F3A3F5BA; Fri, 6 Jul 2018 04:49:32 -0700 (PDT) Subject: Re: [RFC PATCH v4 08/12] sched: Add over-utilization/tipping point indicator To: Peter Zijlstra , Quentin Perret Cc: rjw@rjwysocki.net, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, gregkh@linuxfoundation.org, mingo@redhat.com, dietmar.eggemann@arm.com, morten.rasmussen@arm.com, chris.redpath@arm.com, patrick.bellasi@arm.com, vincent.guittot@linaro.org, thara.gopinath@linaro.org, viresh.kumar@linaro.org, tkjos@google.com, joel@joelfernandes.org, smuckle@google.com, adharmap@quicinc.com, skannan@quicinc.com, pkondeti@codeaurora.org, juri.lelli@redhat.com, edubezval@gmail.com, srinivas.pandruvada@linux.intel.com, currojerez@riseup.net, javi.merino@kernel.org References: <20180628114043.24724-1-quentin.perret@arm.com> <20180628114043.24724-9-quentin.perret@arm.com> <20180706114158.GU2458@hirez.programming.kicks-ass.net> From: Valentin Schneider Message-ID: <7559d0e2-7c5d-3bd3-6123-51fc9a4ca0d4@arm.com> Date: Fri, 6 Jul 2018 12:49:30 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 MIME-Version: 1.0 In-Reply-To: <20180706114158.GU2458@hirez.programming.kicks-ass.net> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06/07/18 12:41, Peter Zijlstra wrote: > On Thu, Jun 28, 2018 at 12:40:39PM +0100, Quentin Perret wrote: >> @@ -698,6 +698,9 @@ struct root_domain { >> /* Indicate more than one runnable task for any CPU */ >> bool overload; > > While there, make that an int. That's what I've done at [1] - I guess that's the fun part of having those two patch sets in flight at the same time... [1]: https://lore.kernel.org/lkml/1530699470-29808-8-git-send-email-morten.rasmussen@arm.com/ > >> + /* Indicate one or more cpus over-utilized (tipping point) */ >> + int overutilized; >> + >> /* >> * The bit corresponding to a CPU gets set here if such CPU has more >> * than one runnable -deadline task (as it is below for RT tasks). >> -- >> 2.17.1 >>