linux-kernel - Re: [PATCH][RFC] x86: add non x86 build configuration

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Date:	Thu, 30 Oct 2008 17:09:22 -0400 (EDT)
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Ingo Molnar <mingo@...e.hu>
cc:	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Heiko Carstens <heiko.carstens@...ibm.com>
Subject: Re: [PATCH][RFC] x86: add non x86 build configuration


On Thu, 30 Oct 2008, Ingo Molnar wrote:
> > 
> > Hmm, I made it a choice, with the "Normal Config" as default, so 
> > that allyesconfig will not set it. Does it get set for you when you 
> > do an allyesconfig?  I had to do the following:
> 
> hm, indeed.
> 
> Still ... the Kconfig glue looks a bit weird - it's almost never a 
> good idea to put 'NOT' (or any other logic operator) into a config 
> name. Why not make this CONFIG_STANDARD_X86_FEATURES and allow it to 

OK

> be disabled when CONFIG_EMBEDDED is enabled? This way it's not just a 
> debug thing but also a kernel sizing feature.

But this affects other things than simply bloat features, like:

        select HAVE_AOUT if X86_32
        select HAVE_UNSTABLE_SCHED_CLOCK
        select HAVE_IDE
        select HAVE_GENERIC_DMA_COHERENT if X86_32
        select HAVE_EFFICIENT_UNALIGNED_ACCESS

Having an option that lets EMBEDDED turn off some of the above might be 
confusing.

-- Steve

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