Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756579Ab1FUWHg (ORCPT ); Tue, 21 Jun 2011 18:07:36 -0400 Received: from ozlabs.org ([203.10.76.45]:51094 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754959Ab1FUWHf convert rfc822-to-8bit (ORCPT ); Tue, 21 Jun 2011 18:07:35 -0400 From: Rusty Russell To: Kay Sievers Cc: linux-kernel , Greg KH Subject: Re: module: sysfs - add 'uevent' file to allow coldplug In-Reply-To: References: <1308434431.1050.5.camel@mop> <8739j59zib.fsf@rustcorp.com.au> User-Agent: Notmuch/0.5 (http://notmuchmail.org) Emacs/23.2.1 (i686-pc-linux-gnu) Date: Tue, 21 Jun 2011 11:23:05 +0930 Message-ID: <87boxshrwe.fsf@rustcorp.com.au> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1591 Lines: 38 On Mon, 20 Jun 2011 13:20:00 +0200, Kay Sievers wrote: > On Mon, Jun 20, 2011 at 01:23, Rusty Russell wrote: > > On Sun, 19 Jun 2011 00:00:29 +0200, Kay Sievers wrote: > >> From: Kay Sievers > >> Subject: module: sysfs - add 'uevent' file to allow built-in coldplug > >> > >> Userspace wants to manage module parameters with udev rules. > >> This currently only works for loaded modules, but not for > >> built-in ones. > > > > I'm confused.  What does "manage" mean here? > > Hook system management into module-load events, which might include > changing module parameters in /sys/module/*/parameters/*, or at > bootup/coldplug run it for built-in modules. > > We do the same to set properties for buses, drivers or devices when they appear. Sorry, that's another vague answer :( udev already knows about module load, and the parameters are created at that point; they are not *changed*. What, *exactly* will this enable? Don't use the word "hook" or "management": both vague terms which assume I know what you're talking about. I don't. Show me exactly what udev will now be able to do that it can't do now, and how it will be used. Preferably with examples. Assume (correctly) that I have only a vague idea what udev does. Thanks, Rusty. -- 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/