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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2018-05-25 12:19:58 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2018-05-30 11:16:59 +0200
commitcc85de361d99490df182e63d13f409054a579a13 (patch)
treee25832af936e4dc7e4a0c13da67f44f6f540eff2 /drivers/cpufreq
parent9c80172b902db58233346adbb139cfdcb9229f0f (diff)
downloadlinux-cc85de361d99490df182e63d13f409054a579a13.tar.bz2
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>
Diffstat (limited to 'drivers/cpufreq')
-rw-r--r--drivers/cpufreq/cpufreq.c13
1 files changed, 1 insertions, 12 deletions
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);