From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail137.messagelabs.com (mail137.messagelabs.com [216.82.249.19]) by kanga.kvack.org (Postfix) with SMTP id 913776B01E3 for ; Sun, 16 May 2010 08:18:02 -0400 (EDT) Date: Fri, 7 May 2010 16:11:42 +0200 From: Pavel Machek Subject: Re: [RFC,5/7] NUMA hotplug emulator Message-ID: <20100507141142.GA8696@ucw.cz> References: <20100513115625.GF2169@shaohui> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100513115625.GF2169@shaohui> Sender: owner-linux-mm@kvack.org To: akpm@linux-foundation.org, linux-mm@kvack.org, Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org, Andi Kleen , Hidetoshi Seto , Len Brown , "Rafael J. Wysocki" , Yinghai Lu , Thomas Renninger , David Rientjes , Mel Gorman , Venkatesh Pallipadi , Alex Chiang , Tejun Heo , Christoph Lameter , Greg Kroah-Hartman , Stephen Rothwell , Benjamin Herrenschmidt , Shaohua Li , Jean Delvare , Hugh Dickins , James Bottomley , "Paul E. McKenney" , linux-kernel@vger.kernel.org, linux-pm@lists.linux-foundation.org, linux-acpi@vger.kernel.org, fengguang.wu@intel.com, haicheng.li@linux.intel.com, shaohui.zheng@linux.intel.com List-ID: Hi! > hotplug emulator: Abstract cpu register functions > > Abstract function arch_register_cpu and register_cpu, move the implementation > details to a sub function with prefix "__". > > each of the sub function has an extra parameter nid, it can be used to register > CPU under a fake NUMA node, it is a reserved interface for cpu hotplug emulation > (CPU PROBE/RELEASE) in x86. I don't get it. CPU hotplug can already be tested using echo 0/1 > online, and that works on 386. How is this different? It seems to add some numa magic. Why is it important? -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org