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 <bigeasy@linutronix.de> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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@ -89,16 +89,7 @@ static void cpufreq_governor_limits(struct cpufreq_policy *policy);
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* The mutex locks both lists.
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*/
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static BLOCKING_NOTIFIER_HEAD(cpufreq_policy_notifier_list);
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static struct srcu_notifier_head cpufreq_transition_notifier_list;
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static bool init_cpufreq_transition_notifier_list_called;
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static int __init init_cpufreq_transition_notifier_list(void)
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{
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srcu_init_notifier_head(&cpufreq_transition_notifier_list);
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init_cpufreq_transition_notifier_list_called = true;
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return 0;
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}
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pure_initcall(init_cpufreq_transition_notifier_list);
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SRCU_NOTIFIER_HEAD_STATIC(cpufreq_transition_notifier_list);
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static int off __read_mostly;
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static int cpufreq_disabled(void)
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@ -1767,8 +1758,6 @@ int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list)
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if (cpufreq_disabled())
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return -EINVAL;
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WARN_ON(!init_cpufreq_transition_notifier_list_called);
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switch (list) {
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case CPUFREQ_TRANSITION_NOTIFIER:
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mutex_lock(&cpufreq_fast_switch_lock);
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