Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756538AbcCCDfl (ORCPT ); Wed, 2 Mar 2016 22:35:41 -0500 Received: from mail-pa0-f47.google.com ([209.85.220.47]:35864 "EHLO mail-pa0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752950AbcCCDfj (ORCPT ); Wed, 2 Mar 2016 22:35:39 -0500 Subject: Re: [RFC/RFT][PATCH v4 1/2] cpufreq: New governor using utilization data from the scheduler To: "Rafael J. Wysocki" References: <5059413.77KZsd2lep@vostro.rjw.lan> <1825489.pc33SqXSIB@vostro.rjw.lan> <56D1270F.4010106@linaro.org> <2754630.1sRldKdOu8@vostro.rjw.lan> <56D5161F.1030701@linaro.org> <56D7AD86.8080702@linaro.org> Cc: "Rafael J. Wysocki" , Linux PM list , Juri Lelli , Linux Kernel Mailing List , Viresh Kumar , Srinivas Pandruvada , Peter Zijlstra , Ingo Molnar From: Steve Muckle Message-ID: <56D7B108.80101@linaro.org> Date: Wed, 2 Mar 2016 19:35:36 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 MIME-Version: 1.0 In-Reply-To: <56D7AD86.8080702@linaro.org> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 578 Lines: 10 On 03/02/2016 07:20 PM, Steve Muckle wrote: > Why does the frequency value not help? It is true there may be issues of > a workload being memory bound and not responding quite linearly to > increasing frequency, but that would pose a problem for the current > algorithm also. Surely it's better to attempt a consistent policy which > doesn't vary based on a platform's fmin value? FWIW I'm not trying to hold up this series - rather just discuss possibilities and differences with the now deprecated solution that may be able to be integrated here sometime in the near future.