Re: [PATCH] kbuild: provide include/asm/asm-prototypes.h for ARM

Arnd Bergmann
2016-10-24T15:05:53Z

On Thursday, October 20, 2016 3:08:14 PM CEST Nicholas Piggin wrote:
> On Wed, 19 Oct 2016 16:32:00 +0100 Russell King - ARM Linux <linux@armlinux.org.uk> wrote:
> > I'm not in favour of this.
> >
> > +extern void mmioset(void *, unsigned int, size_t);
> > +extern void mmiocpy(void *, const void *, size_t);
> > +
> > #ifndef __ARMBE__
> > static inline void memset_io(volatile void __iomem *dst, unsigned c,
> > size_t count)
> > {
> > - extern void mmioset(void *, unsigned int, size_t);
> > mmioset((void __force *)dst, c, count);
> > }
> >
> > The reason they're declared _within_ memset_io() is to prevent people
> > from using them by hiding their declaration. Moving them outside is
> > an open invitation to stupid people starting to use them as an "oh it
> > must be an official API".
> >

I've split out that change from the other ones now, and will follow
up with the patch to address all the other ones first.

> Fair point, what about leaving those as they are, and also adding
> them to asm-prototypes.h protected with GENKSYMS ifdef? It's not
> beautiful, but still better than armksyms.c before Al's patches (or
> at least no worse).

I'm trying this one, and an alternative patch that moves the
export into arch/arm/kernel/io.h. Let's see if we can agree
on one of these.

Arnd