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

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Date:	Tue, 29 Apr 2014 09:09:23 -0400
From:	Don Zickus <dzickus@...hat.com>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Aaron Tomlin <atomlin@...hat.com>
Subject: Re: linux-next: build failure after merge of the akpm-current tree

On Tue, Apr 29, 2014 at 05:13:21PM +1000, Stephen Rothwell wrote:
> Hi Andrew,
> 
> After merging the akpm tree, today's linux-next build (sparc64 defconfig)
> failed like this:
> 
> arch/sparc/kernel/process_64.c: In function 'arch_trigger_all_cpu_backtrace':
> arch/sparc/kernel/process_64.c:267:3: error: ISO C90 forbids mixed declarations and code [-Werror=declaration-after-statement]
> cc1: all warnings being treated as errors
> 
> Caused by commit dd0063a16aa1 ("nmi: provide the option to issue an NMI
> back trace to every cpu but current").
> 
> I have no idea why I did not see this yesterday.
> 
> I applied the following fix up patch:

I apologize for that.  The downsides of making changes without having a
cross compiler.  Thanks for the fixup!

Cheers,
Don

> 
> From: Stephen Rothwell <sfr@...b.auug.org.au>
> Date: Tue, 29 Apr 2014 17:10:00 +1000
> Subject: [PATCH] nmi-provide-the-option-to-issue-an-nmi-back-trace-to-every-cpu-but-current-fix
> 
> Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
> ---
>  arch/sparc/kernel/process_64.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c
> index 65b405c36421..9975a6dbca0a 100644
> --- a/arch/sparc/kernel/process_64.c
> +++ b/arch/sparc/kernel/process_64.c
> @@ -261,10 +261,12 @@ void arch_trigger_all_cpu_backtrace(bool include_self)
>  	smp_fetch_global_regs();
>  
>  	for_each_online_cpu(cpu) {
> +		struct global_reg_snapshot *gp;
> +
>  		if (!include_self && cpu == this_cpu)
>  			continue;
>  
> -		struct global_reg_snapshot *gp = &global_cpu_snapshot[cpu].reg;
> +		gp = &global_cpu_snapshot[cpu].reg;
>  
>  		__global_reg_poll(gp);
>  
> -- 
> 2.0.0.rc0
> 
> -- 
> Cheers,
> Stephen Rothwell                    sfr@...b.auug.org.au


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