From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932706AbcHJSTu (ORCPT ); Wed, 10 Aug 2016 14:19:50 -0400 Received: from mx0b-0016f401.pphosted.com ([67.231.156.173]:47304 "EHLO mx0b-0016f401.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933885AbcHJSTp (ORCPT ); Wed, 10 Aug 2016 14:19:45 -0400 From: Jisheng Zhang To: , , CC: , , Jisheng Zhang Subject: [PATCH 3/3] arm64: kernel: declare cpu_ops __read_mostly Date: Wed, 10 Aug 2016 15:19:19 +0800 Message-ID: <1470813559-2917-4-git-send-email-jszhang@marvell.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1470813559-2917-1-git-send-email-jszhang@marvell.com> References: <1470813559-2917-1-git-send-email-jszhang@marvell.com> MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-08-10_05:,, signatures=0 X-Proofpoint-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1604210000 definitions=main-1608100080 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org cpu_ops is initialized once by cpu_read_ops(), and thereafter is mostly read in hot path, such as arm_cpuidle_suspend(). The fact that it is mostly read and not written to makes it candidates for __read_mostly declarations. Signed-off-by: Jisheng Zhang --- arch/arm64/kernel/cpu_ops.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/kernel/cpu_ops.c b/arch/arm64/kernel/cpu_ops.c index c7cfb8f..c1e4802 100644 --- a/arch/arm64/kernel/cpu_ops.c +++ b/arch/arm64/kernel/cpu_ops.c @@ -28,7 +28,7 @@ extern const struct cpu_operations smp_spin_table_ops; extern const struct cpu_operations acpi_parking_protocol_ops; extern const struct cpu_operations cpu_psci_ops; -const struct cpu_operations *cpu_ops[NR_CPUS]; +const struct cpu_operations *cpu_ops[NR_CPUS] __read_mostly; static const struct cpu_operations *dt_supported_cpu_ops[] __initconst = { &smp_spin_table_ops, -- 2.8.1