From: Sebastian Andrzej Siewior Date: Fri, 25 May 2018 10:19:58 +0000 (+0200) Subject: cpufreq: Use static SRCU initializer X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=cc85de361d99490df182e63d13f409054a579a13;p=openwrt%2Fstaging%2Fblogic.git cpufreq: Use static SRCU initializer 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. Signed-off-by: Sebastian Andrzej Siewior Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 82123a138576..b0dfd3222013 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -89,16 +89,7 @@ static void cpufreq_governor_limits(struct cpufreq_policy *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 = true; - return 0; -} -pure_initcall(init_cpufreq_transition_notifier_list); +SRCU_NOTIFIER_HEAD_STATIC(cpufreq_transition_notifier_list); static int off __read_mostly; static int cpufreq_disabled(void) @@ -1767,8 +1758,6 @@ int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list) if (cpufreq_disabled()) return -EINVAL; - WARN_ON(!init_cpufreq_transition_notifier_list_called); - switch (list) { case CPUFREQ_TRANSITION_NOTIFIER: mutex_lock(&cpufreq_fast_switch_lock);