From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with SMTP id A944A6B004D for ; Fri, 12 Jun 2009 10:07:52 -0400 (EDT) Received: from localhost (smtp.ultrahosting.com [127.0.0.1]) by smtp.ultrahosting.com (Postfix) with ESMTP id 826B382C64F for ; Fri, 12 Jun 2009 10:23:48 -0400 (EDT) Received: from smtp.ultrahosting.com ([74.213.175.254]) by localhost (smtp.ultrahosting.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id dBha7zpe78sx for ; Fri, 12 Jun 2009 10:23:48 -0400 (EDT) Received: from gentwo.org (unknown [74.213.171.31]) by smtp.ultrahosting.com (Postfix) with ESMTP id 4823A82C653 for ; Fri, 12 Jun 2009 10:23:42 -0400 (EDT) Date: Fri, 12 Jun 2009 10:07:57 -0400 (EDT) From: Christoph Lameter Subject: Re: slab: setup allocators earlier in the boot sequence In-Reply-To: <1244814852.30512.67.camel@penberg-laptop> Message-ID: References: <200906111959.n5BJxFj9021205@hera.kernel.org> <1244770230.7172.4.camel@pasglop> <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> <1244796045.7172.82.camel@pasglop> <1244796211.30512.32.camel@penberg-laptop> <1244796837.7172.95.camel@pasglop> <1244797659.30512.37.camel@penberg-laptop> <1244814852.30512.67.camel@penberg-laptop> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org To: Pekka Enberg Cc: Benjamin Herrenschmidt , Linus Torvalds , Linux Kernel list , linux-mm , mingo@elte.hu, akpm@linux-foundation.org, npiggin@suse.de List-ID: On Fri, 12 Jun 2009, Pekka Enberg wrote: > The problem here is that it's not enough that we make GFP_RECLAIM_MASK a > variable. There are various _debugging checks_ that happen much earlier > than that. We need to mask out those too which adds overhead to > kmalloc() fastpath, for example. True. The GFP_RECLAIM_MASK only addresses the passing of gfp flags from a derived allocator to the page allocator. It will deal only with the issue of GFP_WAIT handling. -- 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