Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268335AbUJDRXJ (ORCPT ); Mon, 4 Oct 2004 13:23:09 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268336AbUJDRXJ (ORCPT ); Mon, 4 Oct 2004 13:23:09 -0400 Received: from fmr03.intel.com ([143.183.121.5]:11738 "EHLO hermes.sc.intel.com") by vger.kernel.org with ESMTP id S268335AbUJDRXA (ORCPT ); Mon, 4 Oct 2004 13:23:00 -0400 Date: Mon, 4 Oct 2004 10:22:20 -0700 From: Keshavamurthy Anil S To: Andrew Morton Cc: "Josef 'Jeff' Sipek" , linux-kernel@vger.kernel.org, torvalds@osdl.org, trivial@rustcorp.com.au, rusty@rustcorp.com.au Subject: Re: [PATCH 2.6][resend] Add DEVPATH env variable to hotplug helper call Message-ID: <20041004102220.A3304@unix-os.sc.intel.com> Reply-To: Keshavamurthy Anil S References: <20041003100857.GB5804@optonline.net> <20041003162012.79296b37.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: <20041003162012.79296b37.akpm@osdl.org>; from akpm@osdl.org on Sun, Oct 03, 2004 at 04:20:12PM -0700 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1268 Lines: 24 On Sun, Oct 03, 2004 at 04:20:12PM -0700, Andrew Morton wrote: > Does CPU hotplug behave correctly wrt /sys/devices/system/cpu? Given that > register_cpu() is still marked __init, I assume not. Currently what we have in the kernel is logical cpu hotplug, i.e once the cpu is registered via register_cpu() that cpu can only go offline and still the entry for that cpu will be present in the /sys/devices/system/cpu/cpuX/online. So __init register_cpu() is fine untill we support unregister_cpu() which is required for physical cpu hotplug case. I have submitted ACPI based physical cpu hotplug patches and waiting to here from ACPI mainitainer Len Brown, there I have taken care to support unregister_cpu() and register_cpu() is marked as __devinit in those patches. > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/