Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753470AbZJEPNg (ORCPT ); Mon, 5 Oct 2009 11:13:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753290AbZJEPNg (ORCPT ); Mon, 5 Oct 2009 11:13:36 -0400 Received: from smtp2.ultrahosting.com ([74.213.174.253]:33170 "EHLO smtp.ultrahosting.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753279AbZJEPNf (ORCPT ); Mon, 5 Oct 2009 11:13:35 -0400 Date: Mon, 5 Oct 2009 11:06:31 -0400 (EDT) From: Christoph Lameter X-X-Sender: cl@gentwo.org To: Tejun Heo cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, Mel Gorman , mingo@elte.hu, rusty@rustcorp.com.au, Pekka Enberg Subject: Re: [this_cpu_xx V4 12/20] Move early initialization of pagesets out of zone_wait_table_init() In-Reply-To: <4ACA0A4F.3090004@kernel.org> Message-ID: References: <20091001212521.123389189@gentwo.org> <20091001212559.879284755@gentwo.org> <4AC7279B.3050901@kernel.org> <4ACA0A4F.3090004@kernel.org> User-Agent: Alpine 1.10 (DEB 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 818 Lines: 21 On Tue, 6 Oct 2009, Tejun Heo wrote: > > Because it has to be called immediately after per cpu areas become > > available. Otherwise page allocator uses will fail. > > But... setup_per_cpu_area() isn't supposed to call page allocator and > start_kernel() is the only caller of setup_per_cpu_areas(). setup_per_cpu_areas() is not calling the page allocator. However, any caller after that can call the page allocator. There are various arch implementations that do their own implementation of setup_per_cpu_areas() at their own time (Check sparc and ia64 for example). -- 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/