linux-kernel - Re: [PATCH 22/52] m68k: atari: Add and use "atari.h"

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Message-ID: <CAMuHMdXAEWUvfO8-ASrb=PJwftYEu+BXLzY7kf+aJGY4DuUTbA@mail.gmail.com>
Date:   Fri, 8 Sep 2023 09:13:09 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Finn Thain <fthain@...ux-m68k.org>
Cc:     Michael Schmitz <schmitzmic@...il.com>,
        linux-m68k@...ts.linux-m68k.org, Arnd Bergmann <arnd@...db.de>,
        Philip Blundell <philb@....org>,
        Greg Ungerer <gerg@...ux-m68k.org>,
        Joshua Thompson <funaho@...ai.org>,
        Sam Creasey <sammy@...my.net>,
        Laurent Vivier <laurent@...ier.eu>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 22/52] m68k: atari: Add and use "atari.h"

Hi Finn,

On Fri, Sep 8, 2023 at 3:05 AM Finn Thain <fthain@...ux-m68k.org> wrote:
> On Fri, 8 Sep 2023, Michael Schmitz wrote:
> > atariints.h already has some prototypes, so yes on that account.
> >
> > atarihw.h only has inlines, but sound and time related prototypes could
> > be added there, too.
> >
> > Geert's intentions might have been avoiding inclusion of all the
> > hardware specific data in those two files, but the only source file to
> > benefit from this is config.c (the other three already include
> > atariints.h and atarihw.h).
> >
> > OTOH, considering this patch series adds a lot of other headers that
> > only contain prototypes, it might be better to keep to that pattern
> > everywhere.
>
> I think Geert's intention may have been to avoid adding definitions to the
> asm/foo.h headers shipped with "make headers_install". If that's the
> intention, there would seem to be a mess to be cleaned up, for which I'm
> partly to blame...

arch/m68k/include/asm/ is not shipped, (arch/m68k/include/uapi/asm/ is).
However, arch/m68k/include/asm/ is shared with the whole tree, while
only the core code under arch/m68k/ needs these definitions.

There is (are) definitely (an) opportunit{y,ies} for moving more stuff
around (from <asm/...> to "...", more extern declarations in C files, ...).
Not to mention the more substantial rework...
But Linux/m68k^WRome wasn't built in a decade neither... ;-)

And TBH, I also went for the "minimum amount of work" ;-)
(which didn't work out that well, yet another rabbit hole, as usual...).

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds