Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754387Ab3FFJ6A (ORCPT ); Thu, 6 Jun 2013 05:58:00 -0400 Received: from mail-ob0-f182.google.com ([209.85.214.182]:36817 "EHLO mail-ob0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753846Ab3FFJ56 (ORCPT ); Thu, 6 Jun 2013 05:57:58 -0400 MIME-Version: 1.0 In-Reply-To: <20130606095526.GB21181@pd.tnic> References: <51AF60D5.3080605@semaphore.gr> <20130605161703.GA29958@pd.tnic> <51AF6E39.2080307@verisign.com> <20130606095526.GB21181@pd.tnic> Date: Thu, 6 Jun 2013 15:27:57 +0530 Message-ID: Subject: Re: [PATCH v3 1/3] cpufreq: ondemand: Change the calculation of target frequency From: Viresh Kumar To: Borislav Petkov Cc: David C Niemi , Stratos Karafotis , "Rafael J. Wysocki" , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , linux-pm@vger.kernel.org, cpufreq@vger.kernel.org, linux-kernel@vger.kernel.org, Lists linaro-kernel Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 718 Lines: 13 On 6 June 2013 15:25, Borislav Petkov wrote: > The correct "fix" for this whole deal is coupling cpufreq with > the scheduler, as it has been said so many times before. You need > "something" which can tell you whether raising the freq. is worth it or > not (i.e. the process is waiting on IO or is executing instructions). Linaro has got a blueprint in this direction but doesn't have any proof of concept or RFC patches to share. But that will happen soon. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/