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Message-ID: <20090927115833.GA10316@merkur.ravnborg.org>
Date: Sun, 27 Sep 2009 13:58:33 +0200
From: Sam Ravnborg <sam@...nborg.org>
To: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: Tim Abbott <tabbott@...lice.com>,
Roman Zippel <zippel@...ux-m68k.org>,
linux-m68k@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] m68k: Make thread_info.h usable from assembly.
On Sun, Sep 27, 2009 at 11:55:55AM +0200, Geert Uytterhoeven wrote:
> On Wed, Sep 16, 2009 at 18:44, Tim Abbott <tabbott@...lice.com> wrote:
> > Signed-off-by: Tim Abbott <tabbott@...lice.com>
> > Cc: Geert Uytterhoeven <geert@...ux-m68k.org>
> > Cc: Roman Zippel <zippel@...ux-m68k.org>
> > Cc: linux-m68k@...ts.linux-m68k.org
> > Cc: Sam Ravnborg <sam@...nborg.org>
> > ---
> > arch/m68k/include/asm/thread_info_mm.h | 2 ++
> > 1 files changed, 2 insertions(+), 0 deletions(-)
> >
> > diff --git a/arch/m68k/include/asm/thread_info_mm.h b/arch/m68k/include/asm/thread_info_mm.h
> > index b6da388..5f36cf1 100644
> > --- a/arch/m68k/include/asm/thread_info_mm.h
> > +++ b/arch/m68k/include/asm/thread_info_mm.h
> > @@ -8,6 +8,7 @@
> > #include <asm/types.h>
> > #include <asm/page.h>
> >
> > +#ifndef __ASSEMBLY__
> > struct thread_info {
> > struct task_struct *task; /* main task structure */
> > unsigned long flags;
> > @@ -16,6 +17,7 @@ struct thread_info {
> > __u32 cpu; /* should always be 0 on m68k */
> > struct restart_block restart_block;
> > };
> > +#endif /* __ASSEMBLY__ */
> >
> > #define PREEMPT_ACTIVE 0x4000000
>
> This is not sufficient. <asm/thread_info_mm.h> pulls in <asm/current.h>,
> which contains C only. So you also need:
>
> --- a/arch/m68k/include/asm/thread_info_mm.h
> +++ b/arch/m68k/include/asm/thread_info_mm.h
> @@ -4,11 +4,12 @@
> #ifndef ASM_OFFSETS_C
> #include <asm/asm-offsets.h>
> #endif
> -#include <asm/current.h>
> #include <asm/types.h>
> #include <asm/page.h>
>
> #ifndef __ASSEMBLY__
> +#include <asm/current.h>
> +
> struct thread_info {
> struct task_struct *task; /* main task structure */
> unsigned long flags;
upstream m68k does not build for me so I could not test.
But I think the correct fix is to drop the include or current from thread_info.
No-one except m68k needs to include current.h in thread_info.h.
Sam
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