On Sat, Dec 26, 2015 at 09:41:44PM +0800, cheng...@emindsoft.com.cn wrote:
> From: Chen Gang <cheng...@emindsoft.com.cn>
>
> The related warning from gcc 6.0:
>
> In file included from kernel/rcu/tree.c:4630:0:
> kernel/rcu/tree_plugin.h:810:40: warning: ‘rcu_data_p’ defined but not used
> [-Wunused-const-variable]
> static struct rcu_data __percpu *const rcu_data_p = &rcu_sched_data;
> ^~~~~~~~~~
>
> Also remove always redundant rcu_data_p in tree.c.
>
> Signed-off-by: Chen Gang <gang.chen.5...@gmail.com>
Queued for review and testing, thank you!
Thanx, Paul
> ---
> kernel/rcu/tree.c | 1 -
> kernel/rcu/tree_plugin.h | 1 -
> 2 files changed, 2 deletions(-)
>
> diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
> index 3a8856f..ed85d66 100644
> --- a/kernel/rcu/tree.c
> +++ b/kernel/rcu/tree.c
> @@ -108,7 +108,6 @@ RCU_STATE_INITIALIZER(rcu_sched, 's', call_rcu_sched);
> RCU_STATE_INITIALIZER(rcu_bh, 'b', call_rcu_bh);
>
> static struct rcu_state *const rcu_state_p;
> -static struct rcu_data __percpu *const rcu_data_p;
> LIST_HEAD(rcu_struct_flavors);
>
> /* Dump rcu_node combining tree at boot to verify correct setup. */
> diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
> index 9467a8b..e6b88ad 100644
> --- a/kernel/rcu/tree_plugin.h
> +++ b/kernel/rcu/tree_plugin.h
> @@ -807,7 +807,6 @@ void exit_rcu(void)
> #else /* #ifdef CONFIG_PREEMPT_RCU */
>
> static struct rcu_state *const rcu_state_p = &rcu_sched_state;
> -static struct rcu_data __percpu *const rcu_data_p = &rcu_sched_data;
>
> /*
> * Tell them what RCU they are running.
> --
> 1.9.3
>
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