From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751124AbdAMBSN (ORCPT ); Thu, 12 Jan 2017 20:18:13 -0500 Received: from mail-io0-f195.google.com ([209.85.223.195]:36185 "EHLO mail-io0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750887AbdAMBSL (ORCPT ); Thu, 12 Jan 2017 20:18:11 -0500 Subject: Re: 4.10-rc1: thinkpad x60: who ate my cpu? To: Pavel Machek , kernel list , tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com References: <20170108221721.GB4878@amd> <20170109093001.GA30709@amd> From: Woody Suwalski Message-ID: <41553b16-c527-d99b-b56b-31d6a08a7e8a@gmail.com> Date: Thu, 12 Jan 2017 20:19:31 -0500 User-Agent: Mozilla/5.0 (X11; Linux i686; rv:49.0) Gecko/20100101 Firefox/49.0 SeaMonkey/2.46 MIME-Version: 1.0 In-Reply-To: <20170109093001.GA30709@amd> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Pavel Machek wrote: > Hi! > >> I used to have two cpus, and Thinkpad X60 should have two cores, but I >> only see one on 4.10-rc1. This machine went through many >> suspend/resume cycles. When backups finish, I'll try -rc2. > Whoever did it, he seems to have returned the cpu in -rc3. All seems > to be good now. > Pavel > Actually since you have mentioned - I have checked my x60 - same problem - only one CPU. However I was running 4.8.13 with uptime 33 days, multiple sleep/wake-ups. Installed a current EOL 4.8.17 and rebooted - I see 2 CPUs. So the issue is older then 4.10 kernel, and I suspect it is the CPU hotplug / wakeup related... Woody