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Date: Sat, 26 Dec 2015 21:41:44 +0800 From: chengang@...ndsoft.com.cn To: paulmck@...ux.vnet.ibm.com, josh@...htriplett.org, rostedt@...dmis.org, mathieu.desnoyers@...icios.com, jiangshanlai@...il.com Cc: linux-kernel@...r.kernel.org, Chen Gang <chengang@...ndsoft.com.cn>, Chen Gang <gang.chen.5i5j@...il.com> Subject: [PATCH] kernel: rcu: tree: Remove useless rcu_data_p when !PREEMPT_RCU From: Chen Gang <chengang@...ndsoft.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.5i5j@...il.com> --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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