linux-kernel - Re: [PATCH 1/2] v3.2-rc1-52e4c2a05-rt1 fix for compile break

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Message-ID: <20111114165039.GA2372@linux.vnet.ibm.com>
Date:	Mon, 14 Nov 2011 08:50:39 -0800
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	John Kacur <jkacur@...hat.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	lkml <linux-kernel@...r.kernel.org>,
	rt-users <linux-rt-users@...r.kernel.org>
Subject: Re: [PATCH 1/2] v3.2-rc1-52e4c2a05-rt1 fix for compile break

On Mon, Nov 14, 2011 at 02:44:42AM +0100, John Kacur wrote:
> kernel/rcutorture.c:492: error: ‘synchronize_rcu_bh’ undeclared here (not in a function)
> 
> In CONFIG_PREEMPT_RT_FULL
> doesn't cover function pointer assignment unless we remove the brackets.
> 
> Compile-tested.

Reviewed-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>

I have not yet queued this because mainline does not yet fold RCU and
RCU-bh together.

							Thanx, Paul

> Signed-off-by: John Kacur <jkacur@...hat.com>
> ---
>  include/linux/rcutree.h |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h
> index 800b840..6e503a3 100644
> --- a/include/linux/rcutree.h
> +++ b/include/linux/rcutree.h
> @@ -60,7 +60,7 @@ static inline void exit_rcu(void)
>  #ifndef CONFIG_PREEMPT_RT_FULL
>  extern void synchronize_rcu_bh(void);
>  #else
> -# define synchronize_rcu_bh()	synchronize_rcu()
> +# define synchronize_rcu_bh	synchronize_rcu
>  #endif
>  extern void synchronize_sched_expedited(void);
>  extern void synchronize_rcu_expedited(void);
> -- 
> 1.7.2.3
> 

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