linux-kernel - Re: linux-next: build failure after merge of the final tree

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Date:	Wed, 6 Feb 2013 18:42:43 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: linux-next: build failure after merge of the final tree

Hi all,

On Wed, 6 Feb 2013 18:30:40 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> After merging the final tree, today's linux-next build (sparc defconfig)
> failed like this:
> 
> arch/sparc/kernel/kgdb_32.c: In function 'sleeping_thread_to_gdb_regs':
> arch/sparc/kernel/kgdb_32.c:46:9: error: implicit declaration of function 'task_thread_info' [-Werror=implicit-function-declaration]
> arch/sparc/kernel/kgdb_32.c:46:26: error: initialization makes pointer from integer without a cast [-Werror]
> 
> I can only imagine that the implicit include of linux/sched.h got removed
> in one of our include file changes. :-(
> 
> I have added this patch for today:
> 
> From: Stephen Rothwell <sfr@...b.auug.org.au>
> Date: Wed, 6 Feb 2013 18:26:51 +1100
> Subject: [PATCH] sparc: explicitly include sched.h to get task_thread_info declaration
> 
> Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
> ---
>  arch/sparc/kernel/kgdb_32.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/sparc/kernel/kgdb_32.c b/arch/sparc/kernel/kgdb_32.c
> index 2e424a5..dcf2108 100644
> --- a/arch/sparc/kernel/kgdb_32.c
> +++ b/arch/sparc/kernel/kgdb_32.c
> @@ -5,6 +5,7 @@
>  
>  #include <linux/kgdb.h>
>  #include <linux/kdebug.h>
> +#include <linux/sched.h>
>  
>  #include <asm/kdebug.h>
>  #include <asm/ptrace.h>

This was probably caused by commit 16559ae48c76 ("kgdb: remove #include
<linux/serial_8250.h> from kgdb.h") from the tty tree.

Removing includes from include files is always fraught with this sort of
danger :-(
-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au

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