From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755846AbaGXJMU (ORCPT ); Thu, 24 Jul 2014 05:12:20 -0400 Received: from smtp.codeaurora.org ([198.145.11.231]:33619 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751509AbaGXJMO (ORCPT ); Thu, 24 Jul 2014 05:12:14 -0400 Message-ID: In-Reply-To: References: <1404959850-11617-1-git-send-email-skannan@codeaurora.org> <16164926.ZsJxe6UV3e@vostro.rjw.lan> <53D07737.70904@codeaurora.org> Date: Thu, 24 Jul 2014 09:12:13 -0000 Subject: Re: [PATCH] cpufreq: Don't destroy/realloc policy/sysfs on hotplug/suspend From: skannan@codeaurora.org To: "Viresh Kumar" Cc: "Saravana Kannan" , "Rafael J. Wysocki" , "Todd Poynor" , "linux-pm@vger.kernel.org" , "Linux Kernel Mailing List" , "linux-arm-msm@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" User-Agent: SquirrelMail/1.4.22-4.el6 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT X-Priority: 3 (Normal) Importance: Normal Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Viresh Kumar wrote: > On 24 July 2014 08:32, Saravana Kannan wrote: >> Ok, I think I've figured this out. But one question. Is it possible to >> physically remove one CPU in a bunch of "related cpus" without also >> unplugging the rest? Put another way, can you unplug one core from a >> cluster? > > Are we talking about doing this here: > > echo 0 > /sys/devices/system/cpu/cpuX/online ?? > > If yes, then what's the confusion all about? Yes we do it all the time. > No. That's why I said physically remove. -- The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation