Re: [PATCH 7/7] sched: Silence nested-externs warnings

[Peter Zijlstra]

On Fri, Sep 19, 2014 at 08:29:40AM -0700, Jeff Kirsher wrote:
> From: Mark Rustad <mark.d.rustad@xxxxxxxxx>
> 
> Use diagnostic control macros to ignore nested-externs warnings
> in this case.
> 
> CC: Ingo Molnar <mingo@xxxxxxxxxx>
> CC: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> CC: Brian Norris <computersforpeace@xxxxxxxxx>
> Signed-off-by: Mark Rustad <mark.d.rustad@xxxxxxxxx>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@xxxxxxxxx>
> ---
>  include/linux/sched.h | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/include/linux/sched.h b/include/linux/sched.h
> index 5c2c885..ed52c76 100644
> --- a/include/linux/sched.h
> +++ b/include/linux/sched.h
> @@ -832,7 +832,9 @@ static inline int sched_info_on(void)
>  #ifdef CONFIG_SCHEDSTATS
>  	return 1;
>  #elif defined(CONFIG_TASK_DELAY_ACCT)
> +	DIAG_PUSH DIAG_IGNORE(nested-externs)
>  	extern int delayacct_on;
> +	DIAG_POP
>  	return delayacct_on;

Who has this nested extern warn on in anycase? I've never seen it
generate a warning. Also WTF is DIAG_PUSH/POP, its not a GCC thing
afaict.
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