linux-kernel - Re: [PATCH 13/27] m68k: Use common bits from generic tlb.h

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Message-ID: <CAMuHMdUQfa1E1aJWKU-UN+5WyVZ7LTcQDu+cTr4crjnH69+JMg@mail.gmail.com>
Date:	Thu, 15 May 2014 11:49:32 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Richard Weinberger <richard@....at>
Cc:	Linux-Arch <linux-arch@...r.kernel.org>,
	Arnd Bergmann <arnd@...db.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-m68k <linux-m68k@...ts.linux-m68k.org>
Subject: Re: [PATCH 13/27] m68k: Use common bits from generic tlb.h

Hi Richard,

On Wed, May 14, 2014 at 10:57 PM, Richard Weinberger <richard@....at> wrote:
>> On Wed, May 14, 2014 at 9:26 PM, Richard Weinberger <richard@....at> wrote:
>>>> But why this sudden #ifdef checks?
>>>
>>> They are needed because in pgalloc.h you have:
>>> #ifdef CONFIG_MMU
>>> #include <asm/virtconvert.h>
>>> #if defined(CONFIG_COLDFIRE)
>>> #include <asm/mcf_pgalloc.h>
>>> #elif defined(CONFIG_SUN3)
>>> #include <asm/sun3_pgalloc.h>
>>> #else
>>> #include <asm/motorola_pgalloc.h>
>>> #endif
>>>
>>> And only asm/motorola_pgalloc.h have __pte/pmd_free_tlb as static inline functions.
>>> Therefore we need to define them such that the generic tlb.h versions will not clash
>>> with yours.
>>
>> Thanks for the clarification!
>
> One problem which arises here is that me need to make sure that pgalloc.h is included before
> tlb.h. Which kind of sucks.

Indeed.

arch/m68k/include/asm/mmu_context.h includes pgalloc.h, but not tlb.h.
Didn't check whether it gets it indirectly.

> I'll move __pte/pmd_free_tlb from *_pgalloc.h into tlb.h to prevent this issue.
>
> Are you fine with that?

As long as it compiles, I'm happy ;-)

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
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