From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754857AbbFWQKU (ORCPT ); Tue, 23 Jun 2015 12:10:20 -0400 Received: from cantor2.suse.de ([195.135.220.15]:39688 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754734AbbFWQKP (ORCPT ); Tue, 23 Jun 2015 12:10:15 -0400 Message-ID: <1435075803.2059.1.camel@stgolabs.net> Subject: Re: [RFC][PATCH 00/13] percpu rwsem -v2 From: Davidlohr Bueso To: Peter Zijlstra Cc: oleg@redhat.com, paulmck@linux.vnet.ibm.com, tj@kernel.org, mingo@redhat.com, linux-kernel@vger.kernel.org, der.herr@hofr.at, riel@redhat.com, viro@ZenIV.linux.org.uk, torvalds@linux-foundation.org Date: Tue, 23 Jun 2015 09:10:03 -0700 In-Reply-To: <20150622121623.291363374@infradead.org> References: <20150622121623.291363374@infradead.org> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.12.11 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2015-06-22 at 14:16 +0200, Peter Zijlstra wrote: > This series converts the cpu hotplug lock into a percpu-rwsem to provide a 3rd > user. Curious, why not also mem hotplug? It seems to use the exact same locking mayhem than cpu. Thanks, Davidlohr