From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D0C91C43387 for ; Tue, 15 Jan 2019 17:22:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 925FF20859 for ; Tue, 15 Jan 2019 17:22:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="ZA5/7RN2" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388045AbfAORWg (ORCPT ); Tue, 15 Jan 2019 12:22:36 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:56002 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387405AbfAORWf (ORCPT ); Tue, 15 Jan 2019 12:22:35 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=Zf02zyUAZy9qYRpn7J2k3vi7Owzge1mjj387QTnPyng=; b=ZA5/7RN2tiFLeYOpc149IM2rj vldvlIsanPpNV3rmnYnqMkzRNespkw1wMM+zyin2kHRib8BM27PffrIGI/PIHjOQ69CukTkc6NXRN BVmJ/ZwevmBfB0zhISkhpxGQbaoMjQ6dehezOaJWvgXHQHlKDdtxSMmsH6Yi5Jw9a/xQYJAZ1Qs0j dGghQYvUwyost6N1/GWvsiOWyy2cyYrkM0eSabiji8r7+XumH9XTIjyAe5bCFWN+fATboAQz/Rvnj uc0W8Niba/7HGKqS9wO8nfi8YtbQ5dAW6DjLddJZXwSNtDSMAoOBUZH/jPu1+9oIAYQ2K/8odjFwg WCsZ4SoAg==; Received: from hch by bombadil.infradead.org with local (Exim 4.90_1 #2 (Red Hat Linux)) id 1gjSQ6-0000Jw-7z; Tue, 15 Jan 2019 17:22:34 +0000 Date: Tue, 15 Jan 2019 09:22:34 -0800 From: Christoph Hellwig To: Olof Johansson Cc: Christoph Hellwig , Andrew Morton , linux-mm , Linux Kernel Mailing List , Jan Kara Subject: Re: [PATCH] mm: Make CONFIG_FRAME_VECTOR a visible option Message-ID: <20190115172234.GA991@infradead.org> References: <20190115164435.8423-1-olof@lixom.net> <20190115170510.GA4274@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.2 (2017-12-15) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jan 15, 2019 at 09:17:30AM -0800, Olof Johansson wrote: > I'd argue it's *more* confusing to expect users to know about and > enable some random V4L driver to get this exported kernel API included > or not. Happy to add "If in doubt, say 'n' here" help text, like we do > for many many other kernel config options. It is just like any other library function - you get it with a user. > In this particular case, a module (under early development and not yet > ready to upstream, but will be) worked with a random distro kernel > that enables the kitchen sink of drivers, but not with a more slimmed > down kernel config. Having to enable a driver you'll never use, just > to enable some generic exported helpers, is just backwards. Just develop the damn driver in a kernel tree and let people pull the whole branch like everyone else: problem solved.