linux-kernel - Re: [PATCH 1/1] kernel/rcu/tree.c: make rcu node arrays static const char * const

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Message-ID: <20140506223446.GZ8754@linux.vnet.ibm.com>
Date:	Tue, 6 May 2014 15:34:46 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Fabian Frederick <fabf@...net.be>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	Dipankar Sarma <dipankar@...ibm.com>,
	akpm <akpm@...ux-foundation.org>
Subject: Re: [PATCH 1/1] kernel/rcu/tree.c: make rcu node arrays static const
 char * const

On Tue, May 06, 2014 at 07:21:14PM +0200, Fabian Frederick wrote:
> Those 2 arrays are being passed to lockdep_init_map with const char *
> and stored in lockdep_map the same way
> 
> Cc: Dipankar Sarma <dipankar@...ibm.com>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Signed-off-by: Fabian Frederick <fabf@...net.be>

Queued for 3.17, thank you Fabian!

							Thanx, Paul

> ---
>  kernel/rcu/tree.c | 18 ++++++++++--------
>  1 file changed, 10 insertions(+), 8 deletions(-)
> 
> diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
> index 0c47e30..90ebc83 100644
> --- a/kernel/rcu/tree.c
> +++ b/kernel/rcu/tree.c
> @@ -3357,14 +3357,16 @@ static void __init rcu_init_levelspread(struct rcu_state *rsp)
>  static void __init rcu_init_one(struct rcu_state *rsp,
>  		struct rcu_data __percpu *rda)
>  {
> -	static char *buf[] = { "rcu_node_0",
> -			       "rcu_node_1",
> -			       "rcu_node_2",
> -			       "rcu_node_3" };  /* Match MAX_RCU_LVLS */
> -	static char *fqs[] = { "rcu_node_fqs_0",
> -			       "rcu_node_fqs_1",
> -			       "rcu_node_fqs_2",
> -			       "rcu_node_fqs_3" };  /* Match MAX_RCU_LVLS */
> +	static const char * const buf[] = {
> +		"rcu_node_0",
> +		"rcu_node_1",
> +		"rcu_node_2",
> +		"rcu_node_3" };  /* Match MAX_RCU_LVLS */
> +	static const char * const fqs[] = {
> +		"rcu_node_fqs_0",
> +		"rcu_node_fqs_1",
> +		"rcu_node_fqs_2",
> +		"rcu_node_fqs_3" };  /* Match MAX_RCU_LVLS */
>  	int cpustride = 1;
>  	int i;
>  	int j;
> -- 
> 1.8.4.5
> 
> --
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