linux-kernel - Re: on builds/randconfigs (was: [PATCH -next] thermal: depends on NET)

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Date:	Wed, 12 Jan 2011 13:18:00 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Len Brown <lenb@...nel.org>
Cc:	Randy Dunlap <randy.dunlap@...cle.com>, linux-acpi@...r.kernel.org,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Zhang Rui <rui.zhang@...el.com>, linux-next@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>,
	Zimny Lech <napohybelskurwysynom2010@...il.com>
Subject: Re: on builds/randconfigs (was: [PATCH -next] thermal: depends on
 NET)

On Wed, 12 Jan 2011 13:35:10 -0500 (EST)
Len Brown <lenb@...nel.org> wrote:

> Do I care about the phantom configs that would be possible
> if these false dependencies were not in place.  No,
> not until somebody invents such a system,
> and may be not even then.
> 
> Is there a user out there on LKML who can dream up
> a use for one of these phantom configs and claim that
> his life will end if he'd prevented from building it?
> Sure.  Does he suffer from a total lack of perspective?
> Yes.

These unusable config combinations should be prevented via Kconfig. 
That prevents users from selecting them, which otherwise adds to
our workload and to theirs.  It also prevents false-positives
during our useful randconfig testing.
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