Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932530AbWADQt2 (ORCPT ); Wed, 4 Jan 2006 11:49:28 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751650AbWADQt2 (ORCPT ); Wed, 4 Jan 2006 11:49:28 -0500 Received: from wproxy.gmail.com ([64.233.184.202]:59474 "EHLO wproxy.gmail.com") by vger.kernel.org with ESMTP id S1751591AbWADQt1 convert rfc822-to-8bit (ORCPT ); Wed, 4 Jan 2006 11:49:27 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=pbx5gxuK6qkCwYI/Lx8ldpLGgfkWB958dZtP64IOLv9s23Mi/S77mX5H4sV7Eiwqpz9Sv0vXC0GAj3wWgUMdREKvzFttAVDIRHXJJcMYS4KeaPrIjhfWL/sp+bNOaQprl+yG6xirtPGUacJ1mmRx7ikrOxjl+19BQxb+AVb/AO0= Message-ID: <9a8748490601040849l5e144f18s381854dd7f5f6e6b@mail.gmail.com> Date: Wed, 4 Jan 2006 17:49:25 +0100 From: Jesper Juhl To: Adrian Bunk Subject: Re: [-mm patch] i386: enable 4k stacks by default Cc: Andrew Morton , linux-kernel@vger.kernel.org In-Reply-To: <20060104164445.GO3831@stusta.de> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Content-Disposition: inline References: <20060104145138.GN3831@stusta.de> <9a8748490601040839s58a0a26en454f54459006077c@mail.gmail.com> <20060104164445.GO3831@stusta.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2152 Lines: 49 On 1/4/06, Adrian Bunk wrote: > On Wed, Jan 04, 2006 at 05:39:14PM +0100, Jesper Juhl wrote: > > On 1/4/06, Adrian Bunk wrote: > > > This patch enables 4k stacks by default. > > > > > > 4k stacks have become a well-tested feature used fore a long time in > > > Fedora and even in RHEL 4. > > > > > > There are no known problems in in-kernel code with 4k stacks still > > > present after Neil's patch that went into -mm nearly two months ago. > > > > > > Defaulting to 4k stacks in -mm kernel will give some more testing > > > coverage and should show whether there are really no problems left. > > > > > > Keeping the option for now should make the people happy who want to use > > > the experimental -mm kernel but don't trust the well-tested 4k stacks. > > > > > > > > > Signed-off-by: Adrian Bunk > > > > > > --- linux-2.6.15-rc5-mm3-full/arch/i386/Kconfig.debug.old 2006-01-04 11:43:55.000000000 +0100 > > > +++ linux-2.6.15-rc5-mm3-full/arch/i386/Kconfig.debug 2006-01-04 11:44:14.000000000 +0100 > > > @@ -53,8 +53,8 @@ > > > If in doubt, say "N". > > > > > > config 4KSTACKS > > > - bool "Use 4Kb for kernel stacks instead of 8Kb" > > > - depends on DEBUG_KERNEL > > > + bool "Use 4Kb for kernel stacks instead of 8Kb" if DEBUG_KERNEL > > > > Why "if DEBUG_KERNEL" ? > > This is simply the same as before with the defaults inverted. > I just thought that you wanted to get as much testing in -mm as possible while still leaving the old stacksize option for those who don't yet trust 4K stacks. To get maximum testing making 4KSTACKS default Y and removing the "if DEBUG_KERNEL" conditional just seems to me to be the obvious choice... -- Jesper Juhl Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html Plain text mails only, please http://www.expita.com/nomime.html - 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/