From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1765572AbYEEStb (ORCPT ); Mon, 5 May 2008 14:49:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1761368AbYEESmw (ORCPT ); Mon, 5 May 2008 14:42:52 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:43575 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761423AbYEESmv (ORCPT ); Mon, 5 May 2008 14:42:51 -0400 Date: Mon, 5 May 2008 20:42:35 +0200 From: Ingo Molnar To: Sam Ravnborg Cc: Parag Warudkar , LKML , Linus Torvalds , "akpm@osdl.org" , Peter Zijlstra , Arjan van de Ven , Dave Jones Subject: Re: [PATCH] default to n for GROUP_SCHED and FAIR_GROUP_SCHED Message-ID: <20080505184235.GD22332@elte.hu> References: <82e4877d0805031742o464dd581wd93173d79705ce0d@mail.gmail.com> <20080504092417.GA3425@elte.hu> <82e4877d0805050814j721ae522k84384df48c9f4336@mail.gmail.com> <20080505171501.GA22332@elte.hu> <20080505182427.GA2025@uranus.ravnborg.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080505182427.GA2025@uranus.ravnborg.org> User-Agent: Mutt/1.5.17 (2007-11-01) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Sam Ravnborg wrote: > > This is a many years old kconfig bug that is frequently hacked > > around in distro kernel packages but which has been ignored upstream > > - i've attached Fedora's nonint_oldconfig patch from Dave Jones > > below. (maybe Arjan wrote it originally?) > > In latest kbuild.git I've added a new feature. > > make K=.config alldefconfig > > would give you eaxtly what you request here. K= is used to say where > to locate the base-configuration. great, thanks Sam! ( how hard would it be to fix the "make oldconfig < /dev/null" infinit loop bug btw? I've got this method in a number of scripts of mine and it's an intuitive thing to type anyway, i think users would like it if it Just Worked. ) > redhat has the added possibility to list new symbols. > This is not yet included in mainline. > Not that it is difficult - I just need to decide where/how to do it. the idea of that is this: distro maintainers dont just want to accept new options blindly, they want to make a conscious decision on what default to use. So the Fedora rpm builds will bail out with an error if a config option has not been provided with a default by the pre-cooked configs that are in the SRPM. In practice distro maintainers will pick the upstream default 99% of the time, this is a mechanism to be 'aware' of what is happening upstream, via a non-interactive build method. Would be cool to merge this feature upstream too, in a clean way. Ingo