linux-kernel - Re: [PATCH] configfs: change depends -> select SYSFS

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Message-ID: <4D33965A.1090505@oracle.com>
Date:	Sun, 16 Jan 2011 17:07:38 -0800
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Stefan Richter <stefanr@...6.in-berlin.de>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	"Nicholas A. Bellinger" <nab@...ux-iscsi.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-scsi <linux-scsi@...r.kernel.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	Joel Becker <jlbec@...lplan.org>,
	James Bottomley <James.Bottomley@...e.de>
Subject: Re: [PATCH] configfs: change depends -> select SYSFS

On 01/16/11 16:52, Stefan Richter wrote:
> On Jan 16 Linus Torvalds wrote:
>> Or do you expect a high-quality implementation of a configuration
>> script to allow the user to just say "I want ocfs2", and then figure
>> out the dependencies and solve them for you?
>>
>> I'd say that the latter case is OBVIOUSLY the quality implementation,
>> while the former one is just stupid.
> 
> As Al noted, there also needs to be a convenient way to *disable* options.
> 
> Hence, the Kconfig files should merely declare the dependencies.  Then,
> some user interfaces should deal with the this database of dependencies
> and let different people achieve different goals as easily as possible.
> 
> We already have different UIs.  But perhaps we have too much UI down in
> the Kconfig files.  I.e., perhaps Kconfig shouldn't know the difference
> between depends-on and select.  Let the different UIs present the
> dependency graph to the operator in different ways, suitable to different
> tasks.

I agree, I think that the UIs should list a kconfig symbol and its dependencies,
then let the user enable them as needed.

> /handwave off.


-- 
~Randy
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