linux-kernel - Re: [PATCH -next] bug.h: add empty warn_on_slowpath() for CONFIG

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Date:	Tue, 1 Jul 2008 13:17:14 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Randy Dunlap <randy.dunlap@...cle.com>
Cc:	linux-kernel@...r.kernel.org, andi@...stfloor.org
Subject: Re: [PATCH -next] bug.h: add empty warn_on_slowpath() for
 CONFIG_BUG=n

On Tue, 1 Jul 2008 10:33:39 -0700
Randy Dunlap <randy.dunlap@...cle.com> wrote:

> From: Randy Dunlap <randy.dunlap@...cle.com>
> 
> Add an empty function for warn_on_slowpath() when CONFIG_BUG=n so that
> this build error does not happen:
> 
> linux-next-20080701/drivers/acpi/utilities/utmisc.c: In function 'acpi_ut_error':
> linux-next-20080701/drivers/acpi/utilities/utmisc.c:1028: error: implicit declaration of function 'warn_on_slowpath'
> 
> Signed-off-by: Randy Dunlap <randy.dunlap@...cle.com>
> ---
>  include/asm-generic/bug.h |    5 +++++
>  1 file changed, 5 insertions(+)
> 
> --- linux-next-20080701.orig/include/asm-generic/bug.h
> +++ linux-next-20080701/include/asm-generic/bug.h
> @@ -81,4 +81,9 @@ extern void warn_on_slowpath(const char 
>  # define WARN_ON_SMP(x)			do { } while (0)
>  #endif
>  
> +#ifndef __ASSEMBLY__
> +static inline void warn_on_slowpath(const char *file, const int line)
> +{ }
> +#endif
> +
>  #endif
> 

This looks like a needed-in-mainline fix?  or is there something in
linux-next which causes the bug?

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