From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751910AbbLZNmK (ORCPT ); Sat, 26 Dec 2015 08:42:10 -0500 Received: from out21.biz.mail.alibaba.com ([205.204.114.132]:36541 "EHLO out21.biz.mail.alibaba.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751194AbbLZNmJ (ORCPT ); Sat, 26 Dec 2015 08:42:09 -0500 X-Alimail-AntiSpam: AC=CONTINUE;BC=0.07886858|-1;FP=0|0|0|0|0|-1|-1|-1;HT=e01l04446;MF=chengang@emindsoft.com.cn;NM=1;PH=DS;RN=9;RT=8;SR=0;TI=SMTPD_----4OVaa63_1451137308; From: chengang@emindsoft.com.cn To: paulmck@linux.vnet.ibm.com, josh@joshtriplett.org, rostedt@goodmis.org, mathieu.desnoyers@efficios.com, jiangshanlai@gmail.com Cc: linux-kernel@vger.kernel.org, Chen Gang , Chen Gang Subject: [PATCH] kernel: rcu: tree: Remove useless rcu_data_p when !PREEMPT_RCU Date: Sat, 26 Dec 2015 21:41:44 +0800 Message-Id: <1451137304-23207-1-git-send-email-chengang@emindsoft.com.cn> X-Mailer: git-send-email 1.9.3 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Chen Gang 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 --- 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