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

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Date:	Fri, 19 Sep 2014 21:34:43 +0200
From:	Richard Weinberger <richard.weinberger@...il.com>
To:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Cc:	sparse@...isli.org, Mark Rustad <mark.d.rustad@...el.com>,
	linux-sparse@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Brian Norris <computersforpeace@...il.com>
Subject: Re: [PATCH 7/7] sched: Silence nested-externs warnings

On Fri, Sep 19, 2014 at 5:29 PM, Jeff Kirsher
<jeffrey.t.kirsher@...el.com> wrote:
> From: Mark Rustad <mark.d.rustad@...el.com>
>
> Use diagnostic control macros to ignore nested-externs warnings
> in this case.
>
> CC: Ingo Molnar <mingo@...hat.com>
> CC: Peter Zijlstra <peterz@...radead.org>
> CC: Brian Norris <computersforpeace@...il.com>
> Signed-off-by: Mark Rustad <mark.d.rustad@...el.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
> ---
>  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

This ridiculous, please try to move this extern into the appropriate header file
instead of surrounding it with these macros.

-- 
Thanks,
//richard
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