Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932968AbZFLIUo (ORCPT ); Fri, 12 Jun 2009 04:20:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756193AbZFLIU3 (ORCPT ); Fri, 12 Jun 2009 04:20:29 -0400 Received: from cantor2.suse.de ([195.135.220.15]:39410 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752998AbZFLIU1 (ORCPT ); Fri, 12 Jun 2009 04:20:27 -0400 Date: Fri, 12 Jun 2009 10:20:29 +0200 From: Nick Piggin To: Pekka Enberg Cc: Benjamin Herrenschmidt , Linus Torvalds , Linux Kernel list , linux-mm , mingo@elte.hu, cl@linux-foundation.org, akpm@linux-foundation.org Subject: Re: slab: setup allocators earlier in the boot sequence Message-ID: <20090612082029.GC24044@wotan.suse.de> References: <1244779009.7172.52.camel@pasglop> <1244780756.7172.58.camel@pasglop> <1244783235.7172.61.camel@pasglop> <1244792079.7172.74.camel@pasglop> <1244792745.30512.13.camel@penberg-laptop> <20090612075427.GA24044@wotan.suse.de> <1244793592.30512.17.camel@penberg-laptop> <20090612080236.GB24044@wotan.suse.de> <1244793879.30512.19.camel@penberg-laptop> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1244793879.30512.19.camel@penberg-laptop> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1015 Lines: 26 On Fri, Jun 12, 2009 at 11:04:39AM +0300, Pekka Enberg wrote: > Hi Nick, > > On Fri, 2009-06-12 at 10:02 +0200, Nick Piggin wrote: > > Fair enough, but this can be done right down in the synchronous > > reclaim path in the page allocator. This will catch more cases > > of code using the page allocator directly, and should be not > > as hot as the slab allocator. > > So you want to push the local_irq_enable() to the page allocator too? We Well it would be nice to expose some page allocator functionality at a bit lower level, yes. Like another thing is to avoid atomic refcounting when there is no need for it (eg. in allocations for slab). > can certainly do that but I think we ought to wait for Andrew to merge > Mel's patches to mainline first, OK? Sure. -- 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/