Re: [PATCH 0/5] RFC: strip 15,000 lines from a typical autoconf.h

From: Linus Torvalds
Date: Wed Apr 11 2012 - 21:55:31 EST


On Wed, Apr 11, 2012 at 6:45 PM, Andrew Morton
<akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> So we shouldn't call it IS_DEFINED() - that would cause confusion with
> the old version.

Yeah. Maybe we should call it "config_enabled()" - the lower-case
hopefully makes it clear that it acts as a C function, not a
preprocessor one.

Code like "if (config_enabled(IPV6))" looks reasonably readable to me.

I asked G+ if they can come up with a better trick. They did well on
the whole bitmask calculations, maybe somebody can figure out how to
make the same macro work for both preprocessor and C code...

Linus
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