Date: Mon, 27 Feb 2006 11:11:08 -0800
From: Greg KH <gregkh@suse.de>
To: Arjan van de Ven <arjan@infradead.org>
Cc: Greg KH <greg@kroah.com>, linux-kernel@vger.kernel.org, torvalds@osdl.org,
       Andrew Morton <akpm@osdl.org>, davej@redhat.com, perex@suse.cz,
       Kay Sievers <kay.sievers@vrfy.org>
Subject: Re: [RFC] Add kernel<->userspace ABI stability documentation
Message-ID: <20060227191108.GA9221@suse.de>
References: <20060227190150.GA9121@kroah.com> <1141067298.2992.154.camel@laptopd505.fenrus.org>
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On Mon, Feb 27, 2006 at 08:08:18PM +0100, Arjan van de Ven wrote:
> On Mon, 2006-02-27 at 11:01 -0800, Greg KH wrote:
> > Hi all,
> > 
> > As has been noticed recently by a lot of different people, it seems like
> > we are breaking the userspace<->kernelspace interface a lot.  Well, in
> > looking back over time, we always have been doing this, but no one seems
> > to notice (proc files changing format and location, netlink library
> > bindings, etc.)
> 
> 
> 2 remarks
> 
> 1) it would make sense to keep track of "removed" interfaces as well

Good idea, removed/ should be where things go to after obsolete so
people can find things in the future.

> 2) the per interface description needs a "depends on config option"
> field; not all options are always there, but depend on a config option
> to be set. It makes a lot of sense to mark these as such so that users
> KNOW they have to deal with the interface not being there occasionally,
> depending on the kernel.

Hm, almost _everything_ is configurable these days, including sysfs.  Do
we really want to keep the config value in sync with the kernel config
system too?  I can add it, but it seems a bit unnecessary.

thanks for the quick feedback.

greg k-h
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