From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757046Ab1CCBnv (ORCPT ); Wed, 2 Mar 2011 20:43:51 -0500 Received: from vms173003pub.verizon.net ([206.46.173.3]:52583 "EHLO vms173003pub.verizon.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755420Ab1CCBnu (ORCPT ); Wed, 2 Mar 2011 20:43:50 -0500 Date: Wed, 02 Mar 2011 20:43:32 -0500 (EST) From: Len Brown X-X-Sender: lenb@x980 To: Linus Torvalds Cc: linux-pm@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: [GIT] idle patches for 2.6.38-rc7 Message-id: User-Agent: Alpine 2.02 (LFD 1266 2009-07-14) MIME-version: 1.0 Content-type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Linus, please pull from: git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6.git idle-release This will update the files shown below. thanks! Len Brown Intel Open Source Technology Center arch/x86/include/asm/msr-index.h | 5 +++++ drivers/idle/intel_idle.c | 24 ++++++++++++++++++++++++ 2 files changed, 29 insertions(+), 0 deletions(-) through these commits: Len Brown (2): intel_idle: disable NHM/WSM HW C-state auto-demotion intel_idle: disable Atom/Lincroft HW C-state auto-demotion with this log: commit bfb53ccf1c734b1907df7189eef4c08489827951 Author: Len Brown Date: Wed Feb 16 01:32:48 2011 -0500 intel_idle: disable Atom/Lincroft HW C-state auto-demotion Just as we had to disable auto-demotion for NHM/WSM, we need to do the same for Atom (Lincroft version). In particular, auto-demotion will prevent Lincroft from entering the S0i3 idle power saving state. https://bugzilla.kernel.org/show_bug.cgi?id=25252 Signed-off-by: Len Brown commit 14796fca2bd22acc73dd0887248d003b0f441d08 Author: Len Brown Date: Tue Jan 18 20:48:27 2011 -0500 intel_idle: disable NHM/WSM HW C-state auto-demotion Hardware C-state auto-demotion is a mechanism where the HW overrides the OS C-state request, instead demoting to a shallower state, which is less expensive, but saves less power. Modern Linux should generally get exactly the states it requests. In particular, when a CPU is taken off-line, it must not be demoted, else it can prevent the entire package from reaching deep C-states. https://bugzilla.kernel.org/show_bug.cgi?id=25252 Signed-off-by: Len Brown