Re: [PATCH] KBUILD: Move non-__KERNEL__-checking headers to header-y.

[Andrew Morton <akpm@linux-foundation.org>]

On Wed, 21 May 2008 04:36:30 -0400 (EDT) "Robert P. J. Day" <rpjday@crashcourse.ca> wrote:

> On Tue, 20 May 2008, Andrew Morton wrote:
> 
> > On Sat, 17 May 2008 20:18:07 -0400 (EDT) "Robert P. J. Day" <rpjday@crashcourse.ca> wrote:
> >
> > >
> > > Move exported header files under include/linux that don't check the
> > > __KERNEL__ preprocessor from unifdef-y to header-y.
> > >
> >
> > Changelog fails to tell us why this change is being made.
> >
> > Perhaps it's because these headers just don't need unifdef processing?
> >
> > If so, that seems fragile.  If we later add a __KERNEL__ section to
> > a header we need to remember to move the file to unifdef-y, and
> > we'll forget.  It'd be better to process all files with unifdef.
> >
> > Or something.  Or not.
> 
>   i don't see a problem with simply running all exported files through
> unifdef -- i've never understood the two categories since the unifdef
> process is not exactly CPU-intensive and it can't possibly hurt for
> some of those operations to be redundant.
> 
>   but as long as the two categories exist, might as well keep them
> clean.
> 

Well...  not to let this go for now - nuking the header-y stuff is an
attractive cleanup.  David, are we missing something here?