From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx124.postini.com [74.125.245.124]) by kanga.kvack.org (Postfix) with SMTP id 8F7B76B0075 for ; Wed, 24 Oct 2012 11:34:01 -0400 (EDT) Date: Wed, 24 Oct 2012 17:33:59 +0200 From: Andi Kleen Subject: Re: [PATCH v2 1/2] kmem_cache: include allocators code directly into slab_common Message-ID: <20121024153359.GK16230@one.firstfloor.org> References: <1351087158-8524-1-git-send-email-glommer@parallels.com> <1351087158-8524-2-git-send-email-glommer@parallels.com> <0000013a932d456c-8f0cbbce-e3f7-4f2a-b051-7b093a8cfc7e-000000@email.amazonses.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0000013a932d456c-8f0cbbce-e3f7-4f2a-b051-7b093a8cfc7e-000000@email.amazonses.com> Sender: owner-linux-mm@kvack.org List-ID: To: Christoph Lameter Cc: andi@firstfloor.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Joonsoo Kim , David Rientjes , Pekka Enberg , Glauber Costa On Wed, Oct 24, 2012 at 02:29:09PM +0000, Christoph Lameter wrote: > On Wed, 24 Oct 2012, Glauber Costa wrote: > > > Because of that, we either have to move all the entry points to the > > mm/slab.h and rely heavily on the pre-processor, or include all .c files > > in here. > > Hmm... That is a bit of a radical solution. The global optimizations now > possible with the new gcc compiler include the ability to fold functions > across different linkable objects. Andi, is that usable for kernel builds? Yes, but you need a fairly large patchkit which is not mainline yet. https://github.com/andikleen/linux-misc/tree/lto -Andi -- ak@linux.intel.com -- Speaking for myself only. -- 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 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934752Ab2JXPeL (ORCPT ); Wed, 24 Oct 2012 11:34:11 -0400 Received: from one.firstfloor.org ([213.235.205.2]:60882 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934459Ab2JXPeG (ORCPT ); Wed, 24 Oct 2012 11:34:06 -0400 Date: Wed, 24 Oct 2012 17:33:59 +0200 From: Andi Kleen To: Christoph Lameter Cc: andi@firstfloor.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Joonsoo Kim , David Rientjes , Pekka Enberg , Glauber Costa Subject: Re: [PATCH v2 1/2] kmem_cache: include allocators code directly into slab_common Message-ID: <20121024153359.GK16230@one.firstfloor.org> References: <1351087158-8524-1-git-send-email-glommer@parallels.com> <1351087158-8524-2-git-send-email-glommer@parallels.com> <0000013a932d456c-8f0cbbce-e3f7-4f2a-b051-7b093a8cfc7e-000000@email.amazonses.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0000013a932d456c-8f0cbbce-e3f7-4f2a-b051-7b093a8cfc7e-000000@email.amazonses.com> User-Agent: Mutt/1.4.2.2i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Oct 24, 2012 at 02:29:09PM +0000, Christoph Lameter wrote: > On Wed, 24 Oct 2012, Glauber Costa wrote: > > > Because of that, we either have to move all the entry points to the > > mm/slab.h and rely heavily on the pre-processor, or include all .c files > > in here. > > Hmm... That is a bit of a radical solution. The global optimizations now > possible with the new gcc compiler include the ability to fold functions > across different linkable objects. Andi, is that usable for kernel builds? Yes, but you need a fairly large patchkit which is not mainline yet. https://github.com/andikleen/linux-misc/tree/lto -Andi -- ak@linux.intel.com -- Speaking for myself only.