From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752203Ab2ALCLX (ORCPT ); Wed, 11 Jan 2012 21:11:23 -0500 Received: from mga02.intel.com ([134.134.136.20]:2183 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752102Ab2ALCLV (ORCPT ); Wed, 11 Jan 2012 21:11:21 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.67,351,1309762800"; d="scan'208";a="97259430" Message-ID: <4F0E4147.7000903@linux.intel.com> Date: Thu, 12 Jan 2012 10:11:19 +0800 From: Chen Gong User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:9.0) Gecko/20111222 Thunderbird/9.0.1 MIME-Version: 1.0 To: "R, Durgadoss" CC: "linux-x86_64@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: CPU clock throttled prints.. References: In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 于 2011/7/5 13:36, R, Durgadoss 写道: > Hi All, > > I am getting these prints in my Atom based device, running 2.6.35 kernel. > > [ 350.084005] CPU0: Temperature above threshold, cpu clock throttled (total > events = 26) > [ 350.084029] CPU1: Temperature above threshold, cpu clock throttled (total > events = 26) > [ 350.085293] CPU0: Temperature/speed normal > [ 350.085311] CPU1: Temperature/speed normal > > Seems like these are from therm_throt.c and the flow for this, > Starts from smp_thermal_interrupt(...) method. > > Can somebody tell me when this method gets called ? > Also, does this actually throttle the CPU ? > try to apply this patch 29e9bf1841e4f (x86, mce, therm_throt: Don't report power limit and package level thermal throttle events in mcelog)