Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932976Ab2EDVCC (ORCPT ); Fri, 4 May 2012 17:02:02 -0400 Received: from casper.infradead.org ([85.118.1.10]:33335 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932592Ab2EDVB6 convert rfc822-to-8bit (ORCPT ); Fri, 4 May 2012 17:01:58 -0400 Message-ID: <1336165294.6509.76.camel@twins> Subject: Re: [PATCH v2 0/7] CPU hotplug, cpusets: Fix issues with cpusets handling upon CPU hotplug From: Peter Zijlstra To: Nishanth Aravamudan Cc: "Srivatsa S. Bhat" , mingo@kernel.org, pjt@google.com, paul@paulmenage.org, akpm@linux-foundation.org, rjw@sisk.pl, nacc@us.ibm.com, paulmck@linux.vnet.ibm.com, tglx@linutronix.de, seto.hidetoshi@jp.fujitsu.com, rob@landley.net, tj@kernel.org, mschmidt@redhat.com, berrange@redhat.com, nikunj@linux.vnet.ibm.com, vatsa@linux.vnet.ibm.com, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-pm@vger.kernel.org Date: Fri, 04 May 2012 23:01:34 +0200 In-Reply-To: <20120504204908.GC18177@linux.vnet.ibm.com> References: <20120504191535.4603.83236.stgit@srivatsabhat> <1336159496.6509.51.camel@twins> <4FA434E9.6000305@linux.vnet.ibm.com> <1336162456.6509.63.camel@twins> <1336163281.6509.69.camel@twins> <20120504204908.GC18177@linux.vnet.ibm.com> Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT X-Mailer: Evolution 3.2.2- Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 785 Lines: 17 On Fri, 2012-05-04 at 13:49 -0700, Nishanth Aravamudan wrote: > I think it's ok for hotplug to be destructive. But I guess I'm not > entirely sure why cpusets can't retain user-inputted > configuration/policy information even while destroying things currently? > And re-instating that policy if possible in the future? Two issues here: - if you retain it for cpuset but not others that's confusing (too); - we never retain anything, if you unload a module you loose all state that was associated with it too. What makes this special? -- 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/