From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751814AbdANJNj (ORCPT ); Sat, 14 Jan 2017 04:13:39 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:39160 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751678AbdANJNd (ORCPT ); Sat, 14 Jan 2017 04:13:33 -0500 From: "Paul E. McKenney" To: linux-kernel@vger.kernel.org Cc: mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, dvhart@linux.intel.com, fweisbec@gmail.com, oleg@redhat.com, bobby.prani@gmail.com, Tobias Klauser , "Paul E. McKenney" Subject: [PATCH tip/core/rcu 06/20] rcu: Remove unused but set variable Date: Sat, 14 Jan 2017 01:13:07 -0800 X-Mailer: git-send-email 2.5.2 In-Reply-To: <20170114091255.GA20854@linux.vnet.ibm.com> References: <20170114091255.GA20854@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Content-Scanned: Fidelis XPS MAILER x-cbid: 17011409-0016-0000-0000-000005DF11FB X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00006431; HX=3.00000240; KW=3.00000007; PH=3.00000004; SC=3.00000199; SDB=6.00807466; UDB=6.00393077; IPR=6.00584804; BA=6.00005055; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00013919; XFM=3.00000011; UTC=2017-01-14 09:13:30 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17011409-0017-0000-0000-0000367D3785 Message-Id: <1484385201-22227-6-git-send-email-paulmck@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-01-14_01:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=1 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1612050000 definitions=main-1701140136 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Tobias Klauser Since commit 7ec99de36f40 ("rcu: Provide exact CPU-online tracking for RCU"), the variable mask in rcu_init_percpu_data is set but no longer used. Remove it to fix the following warning when building with 'W=1': kernel/rcu/tree.c: In function ‘rcu_init_percpu_data’: kernel/rcu/tree.c:3765:16: warning: variable ‘mask’ set but not used [-Wunused-but-set-variable] Signed-off-by: Tobias Klauser Signed-off-by: Paul E. McKenney --- kernel/rcu/tree.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 6232d2f9a84e..83bf054e194e 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -3765,7 +3765,6 @@ static void rcu_init_percpu_data(int cpu, struct rcu_state *rsp) { unsigned long flags; - unsigned long mask; struct rcu_data *rdp = per_cpu_ptr(rsp->rda, cpu); struct rcu_node *rnp = rcu_get_root(rsp); @@ -3788,7 +3787,6 @@ rcu_init_percpu_data(int cpu, struct rcu_state *rsp) * of the next grace period. */ rnp = rdp->mynode; - mask = rdp->grpmask; raw_spin_lock_rcu_node(rnp); /* irqs already disabled. */ if (!rdp->beenonline) WRITE_ONCE(rsp->ncpus, READ_ONCE(rsp->ncpus) + 1); -- 2.5.2