Subject: Re: ARM defconfig files
From: Daniel Walker <dwalker@codeaurora.org>
To: Russell King <rmk@arm.linux.org.uk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
       Kevin Hilman <khilman@deeprootsystems.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       linux-arm-msm@vger.kernel.org
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	 <20100603181010.GA25779@flint.arm.linux.org.uk>
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Date: Thu, 03 Jun 2010 11:20:30 -0700
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On Thu, 2010-06-03 at 19:10 +0100, Russell King wrote:

> config STD_CONFIG
> 	bool "Enable me to generate a standard configuration for your platform"
> 
> and then have platforms conditionally select everything that's
> appropriate for their use.  That provides a way to avoid the ages old
> issue of select forcing options on, but the user still being presented
> with the option and being told the only possible value for it is 'y'.
> 
> And yes, it _is_ necessary - because if you want to turn off something
> on the platform - eg, you're not using MMC and MMC fails to build -
> you can still end up with a working configuration at the end of the
> day.

Check out the SAT solver link I quoted in the prior email.. That sounds
like a really interesting solution. The defconfigs would ultimately hold
just what's unique to a given board, then the solver would figure out
what to else to enable just from those unique properties.

So we would still have defconfigs , but they would not have loads of
duplication like they do now.

I don't see how we can do without defconfigs altogether tho. I mean , if
you want to run a Beagle board or a Nexus one we can't just give the
users a slim ARM config and let them troll through 1000's of drivers
trying to find just those ones that work on their given board.

Daniel

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