linux-kernel - Re: ARM defconfig files

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Message-ID: <1275593742.23384.48.camel@c-dwalke-linux.qualcomm.com>
Date:	Thu, 03 Jun 2010 12:35:42 -0700
From:	Daniel Walker <dwalker@...eaurora.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Russell King <rmk@....linux.org.uk>,
	Kevin Hilman <khilman@...prootsystems.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-arm-msm@...r.kernel.org
Subject: Re: ARM defconfig files

On Thu, 2010-06-03 at 11:56 -0700, Linus Torvalds wrote:
> 
> On Thu, 3 Jun 2010, Russell King wrote:
> > 
> > No amount of reorganising the Kconfig files into a heirarchial manner
> > (which they already are) helps.  Not one bit.  Because they already are.
> > That's not where the problem is.
> 
> I don't think you read the whole thread.
> 
> Earlier on, I explained exactly what I wanted: just add some "select" 
> statements to pickt he things you need per the particular target 
> configuration. You seem to have missed that part.
> 
> In other words, you _can_ encode the information that is in the 
> xyz_defconfig files by doing it in Kconfig.xyz files instead. But you do 
> it in a human-readable manner. And the hierarchical thing is absolutely 
> required for that - otherwise you'd end up with just another form of the 
> current xyz_defconfig.
> 
> See?
> 
> In other words, you should be able to basically use "make allnoconfig" 
> together with a Kconfig.xyz file input to select _exactly_ the pieces you 
> need, and nothing else.

If you did this for drivers, what about disabling a driver? If we used
"select" wouldn't that force all the drivers on without allowing it to
be unselected?

Daniel

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