linux-kernel - Re: [PATCH] zcache/debug: compiler failure on PPC64.

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Message-ID: <20130307013158.GC2910@kroah.com>
Date:	Thu, 7 Mar 2013 09:31:58 +0800
From:	Greg KH <greg@...ah.com>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc:	linux-kernel@...r.kernel.org, linux-next@...r.kernel.org,
	sfr@...b.auug.org.au
Subject: Re: [PATCH] zcache/debug: compiler failure on PPC64.

On Wed, Mar 06, 2013 at 07:13:36PM -0500, Konrad Rzeszutek Wilk wrote:
> On PPC64 we get this:
> In file included from drivers/staging/zcache/debug.c:2:
> drivers/staging/zcache/debug.h: In function 'dec_zcache_obj_count':
> drivers/staging/zcache/debug.h:16: error: implicit declaration of function 'BUG_ON'
> 
> This simple patch adds the appropiate header file to finish
> the compile.
> 
> Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
> ---
>  drivers/staging/zcache/debug.h | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/staging/zcache/debug.h b/drivers/staging/zcache/debug.h
> index eef67db..0d9c6b4 100644
> --- a/drivers/staging/zcache/debug.h
> +++ b/drivers/staging/zcache/debug.h
> @@ -1,5 +1,6 @@
>  #ifdef CONFIG_ZCACHE_DEBUG
>  
> +#include <linux/bug.h>
>  /* we try to keep these statistics SMP-consistent */

Put the #include files at the top of the file.

Also, you didn't really test this on linux-next as you can't select this
option at the moment, I think you also want to fix that at the same
time, unless you really don't want anyone to ever select this option :)

Try it again?

thanks,

greg k-h
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