From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail2.shareable.org (mail2.shareable.org [80.68.89.115]) by ozlabs.org (Postfix) with ESMTP id 84ABAB6F17 for ; Sat, 17 Jul 2010 09:49:42 +1000 (EST) Date: Sat, 17 Jul 2010 00:49:18 +0100 From: Jamie Lokier To: Daniel Walker Subject: Re: [RFC PATCH] Kconfig: Enable Kconfig fragments to be used for defconfig Message-ID: <20100716234918.GA31060@shareable.org> References: <20100713230352.6781.18644.stgit@angua> <1279062881.4609.34.camel@c-dwalke-linux.qualcomm.com> <1279064008.4609.48.camel@c-dwalke-linux.qualcomm.com> <1279124563.21162.14.camel@c-dwalke-linux.qualcomm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <1279124563.21162.14.camel@c-dwalke-linux.qualcomm.com> Cc: linuxppc-dev@lists.ozlabs.org, linux-kbuild@vger.kernel.org, Tony Lindgren , Nicolas Pitre , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Uwe =?iso-8859-1?Q?Kleine-K=F6nig?= , Linus Torvalds , Russell King List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Daniel Walker wrote: > > But all the rest is arbitrary and could be part of common shared > > profiles or the like in defconfig format. > > I'm sure most people will want to have a config isolated to their > specific device. That to me seems reasonable because everyone wants the > smallest possible kernel they can get for their given device. Indeed, but people who want the smallest possible kernel for their specific device _in a particular use context_ tend to want: - To disable support for parts of the device they aren't using. For example, an SoC with integrated ethernet that isn't actually wired up on their board, or where they're using an external ethernet chip instead for some reason. - To choose what's modular and what isn't, even for integrated parts. For example to control the bootup sequence, they might want to delay integrated USB and IDE initialisation, which is done by making those modular and loading them after bringing up a splash screen earlier in the boot scripts. So there is still a need to be able to override the drivers and settings, but it's still incredibly useful to have defaults which describe the SoC or board accurately. -- Jamie