From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756023AbaELX2p (ORCPT ); Mon, 12 May 2014 19:28:45 -0400 Received: from v094114.home.net.pl ([79.96.170.134]:64949 "HELO v094114.home.net.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751849AbaELX2e (ORCPT ); Mon, 12 May 2014 19:28:34 -0400 From: "Rafael J. Wysocki" To: Dirk Brandewie Cc: Stratos Karafotis , dirk.j.brandewie@intel.com, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org Subject: Re: [PATCH 4/5] intel_pstate: Remove C0 tracking Date: Tue, 13 May 2014 01:45:19 +0200 Message-ID: <5584056.gWB1BqsgiU@vostro.rjw.lan> User-Agent: KMail/4.11.5 (Linux/3.14.0-rc7+; KDE/4.11.5; x86_64; ; ) In-Reply-To: <5370DD27.5030701@intel.com> References: <1399579047-5792-1-git-send-email-dirk.j.brandewie@intel.com> <5349714.j69a5Fx52S@vostro.rjw.lan> <5370DD27.5030701@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="utf-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Monday, May 12, 2014 07:39:35 AM Dirk Brandewie wrote: > On 05/12/2014 05:16 AM, Rafael J. Wysocki wrote: > > On Monday, May 12, 2014 05:27:25 AM Stratos Karafotis wrote: > >> Hi, > >> > > > > [cut] > > > >> > >> With this patch, my CPU (Core i7-3770 @ 3.90GHz) seems to never use lowest > >> frequencies. Even on an idle system I get always ~2GHz. Normally, > >> on an idle system it used to be 1.6GHz. > >> On very small loads (mp3 decoding) the CPU goes up to 2.7G GHz (it used to > >> be 1.6GHz) > >> > >> Reverting, this patch on my local build, the problem is resolved. > > > > Dirk, seriously, I can't regard this as a fix that can go into -rc6. > > > > Ok I will resubmit after more testing > > > Which of the other patch in the series are must-go for 3.15? [1-2/5] I guess? > > And do we need [2/5] it in -stable too? > > 1/5 is for stable it fixes a random MCE on baytrail. > 2/5 is for stable it should have went with the stop_cpu patch Which -stable are these two for? All of them? > 5/5 can go too since it is just adding CPU IDs Well, I'm a bit reluctant to push that for -rc6. There were cases where new IDs broke stuff that worked without them just fine. -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center.