Re: [RFC] Splitting kernel headers and deprecating __KERNEL__

[Andreas Steinmetz]

Sam Ravnborg wrote:
> On Thu, Nov 25, 2004 at 03:13:12PM +0000, David Howells wrote:
>
> > We've been discussing splitting the kernel headers into userspace API headers
> > and kernel internal headers and deprecating the __KERNEL__ macro. This will
> > permit a cleaner interface between the kernel and userspace; and one that's
> > easier to keep up to date.
> >
> > What we've come up with is this:
> >
> > (1) Create new directories in the linux sources to shadow existing include
> >     directories:
> >
> > 	NEW DIRECTORY		DIRECTORY SHADOWED
> > 	=============		==================
> > 	include/user/		include/linux/
> > 	include/user-*/		include/asm-*/
> >
> >     Note that this doesn't take account of the other directories under
> >     include/, but I don't think they're relevant.
>
>
> If we go for some resturcturing of include/ then we should get rid of
> the annoying asm symlink. Following layout deals with that:
>
> include/<arch>/asm		<= Files from include/asm-<arch>
> include/<arch>/mach*		<= Files from include/mach-*
>
> This layout solve the symlink issue in an elegant way.
> We need to do trivial changes to compiler options to make it work. Changing
> compiler options is much more relaible than using symlinks.
>
> Then the userspace part would then be located in:
> include/<arch>/user-asm

This complicates things for bi-arch architectures like x86_64 where one 
can use a dispatcher directory instead of a symlink to suit include/asm 
for 32bit as well as 64bit.

--
Andreas Steinmetz                       SPAMmers use robotrap@xxxxxxxx
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/