From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965618AbeEYKUI (ORCPT ); Fri, 25 May 2018 06:20:08 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:55289 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S936153AbeEYKUE (ORCPT ); Fri, 25 May 2018 06:20:04 -0400 From: Sebastian Andrzej Siewior To: linux-pm@vger.kernel.org Cc: linux-kernel@vger.kernel.org, "Rafael J. Wysocki" , Viresh Kumar , "Paul E. McKenney" , Thomas Gleixner , bigeasy@linutronix.de Subject: [PATCH 2/2] cpufreq: Use static SRCU initializer Date: Fri, 25 May 2018 12:19:58 +0200 Message-Id: <20180525101958.13277-3-bigeasy@linutronix.de> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180525101958.13277-1-bigeasy@linutronix.de> References: <20180525101958.13277-1-bigeasy@linutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Use the static SRCU initializer for `cpufreq_transition_notifier_list'. This avoids the init_cpufreq_transition_notifier_list() initcall. Its only purpose is to initialize the SRCU notifier once during boot and set another variable which is used as an indicator whether the init was perfromed before cpufreq_register_notifier() was used. Cc: "Rafael J. Wysocki" CC: Viresh Kumar Signed-off-by: Sebastian Andrzej Siewior --- drivers/cpufreq/cpufreq.c | 13 +------------ 1 file changed, 1 insertion(+), 12 deletions(-) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 075d18f6ba7a..3f7b502cfb1e 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -89,16 +89,7 @@ static void cpufreq_governor_limits(struct cpufreq_polic= y *policy); * The mutex locks both lists. */ static BLOCKING_NOTIFIER_HEAD(cpufreq_policy_notifier_list); -static struct srcu_notifier_head cpufreq_transition_notifier_list; - -static bool init_cpufreq_transition_notifier_list_called; -static int __init init_cpufreq_transition_notifier_list(void) -{ - srcu_init_notifier_head(&cpufreq_transition_notifier_list); - init_cpufreq_transition_notifier_list_called =3D true; - return 0; -} -pure_initcall(init_cpufreq_transition_notifier_list); +SRCU_NOTIFIER_HEAD_STATIC(cpufreq_transition_notifier_list); =20 static int off __read_mostly; static int cpufreq_disabled(void) @@ -1764,8 +1755,6 @@ int cpufreq_register_notifier(struct notifier_block *= nb, unsigned int list) if (cpufreq_disabled()) return -EINVAL; =20 - WARN_ON(!init_cpufreq_transition_notifier_list_called); - switch (list) { case CPUFREQ_TRANSITION_NOTIFIER: mutex_lock(&cpufreq_fast_switch_lock); --=20 2.17.0