From owner-freebsd-hackers@FreeBSD.ORG  Fri Jun 11 04:28:59 2010
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 73F681065673
	for <freebsd-hackers@freebsd.org>; Fri, 11 Jun 2010 04:28:59 +0000 (UTC)
	(envelope-from adrian.chadd@gmail.com)
Received: from mail-iw0-f182.google.com (mail-iw0-f182.google.com
	[209.85.214.182])
	by mx1.freebsd.org (Postfix) with ESMTP id 33F7C8FC15
	for <freebsd-hackers@freebsd.org>; Fri, 11 Jun 2010 04:28:58 +0000 (UTC)
Received: by iwn7 with SMTP id 7so940017iwn.13
	for <freebsd-hackers@freebsd.org>; Thu, 10 Jun 2010 21:28:58 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma;
	h=domainkey-signature:mime-version:received:sender:received
	:in-reply-to:references:date:x-google-sender-auth:message-id:subject
	:from:to:cc:content-type;
	bh=eSEYJ7q+aQy6ni34FSp911YqcgpF6WBmELx/4OWN4XQ=;
	b=XVkYPlJt0tgWoTQILSGiDucqcmQB6WEzVStToR+Bbjpg9e5sXC5LsG0B51XVE8m596
	T1qBIr5QH7GdN/Y7GY4NuSYXm6ILO2iRSr5o1iP4AbxkPkbkfad3lEGVC0Z/knrtdyii
	qX3ToRjIv6TTdjWwGJo0RQMf69mKBB2XU9wNk=
DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma;
	h=mime-version:sender:in-reply-to:references:date
	:x-google-sender-auth:message-id:subject:from:to:cc:content-type;
	b=nA1P9tYPi5Ba4XIvMkzvmSIOCzp3skTXCcU7iznYIfUguKGkgOW6WvjRKV5qa44N5V
	HHzg0RTWCQIQ2K723GXwwpJQRWhomL/39xCFnegE4MCi9UF25qol13Ene5R+ouxpSSbe
	7QEcZRR2t7CMDL407KnfeMuP+HE1AjDpe1tmM=
MIME-Version: 1.0
Received: by 10.231.157.205 with SMTP id c13mr1248977ibx.53.1276230538331; 
	Thu, 10 Jun 2010 21:28:58 -0700 (PDT)
Sender: adrian.chadd@gmail.com
Received: by 10.231.156.76 with HTTP; Thu, 10 Jun 2010 21:28:58 -0700 (PDT)
In-Reply-To: <20100610160109.19585782fyr3buw4@webmail.leidinger.net>
References: <20100609121453.095d92b4@kibab.com> <4C0F9394.9030202@dataix.net>
	<20100609132543.GI83316@deviant.kiev.zoral.com.ua>
	<A4C894EA-8039-459B-B4C8-8F7CC98421F8@gmail.com>
	<20100610101801.742fac25@ernst.jennejohn.org>
	<20100610160109.19585782fyr3buw4@webmail.leidinger.net>
Date: Fri, 11 Jun 2010 12:28:58 +0800
X-Google-Sender-Auth: PthJ03921zmJt0kenjAioawZiO4
Message-ID: <AANLkTimTVmKz2b50GWTDktRTqJaKMsxOz4Uuo6wJP2Rj@mail.gmail.com>
From: Adrian Chadd <adrian@freebsd.org>
To: Alexander Leidinger <Alexander@leidinger.net>
Content-Type: text/plain; charset=ISO-8859-1
Cc: Kostik Belousov <kostikbel@gmail.com>, freebsd-hackers@freebsd.org,
	Ilya Bakulin <webmaster@kibab.com>, Garrett Cooper <yaneurabeya@gmail.com>
Subject: Re: GSoC: registration of optional kernel features via sysctl: a 
	question to the community
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, 
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 11 Jun 2010 04:28:59 -0000

How about exposing a simple userspace API for doing this, rather than
doing it via sysctl?

That way you could "simply" tie alternative overrides in as needed for
builds (eg, environment variables setting overrides; and/or pointing
to a configuration file with such) but not affect any runtime
detection the rest of the system is doing.


Adrian