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-rw-r--r--drivers/cpufreq/cpufreq.c51
1 files changed, 22 insertions, 29 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index dddbefb857c9..571723b338f9 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1041,13 +1041,13 @@ static void update_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu)
CPUFREQ_UPDATE_POLICY_CPU, policy);
}
-static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif,
- bool frozen)
+static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif)
{
unsigned int j, cpu = dev->id;
int ret = -ENOMEM;
struct cpufreq_policy *policy;
unsigned long flags;
+ bool recover_policy = cpufreq_suspended;
#ifdef CONFIG_HOTPLUG_CPU
struct cpufreq_policy *tpolicy;
#endif
@@ -1088,9 +1088,9 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif,
* Restore the saved policy when doing light-weight init and fall back
* to the full init if that fails.
*/
- policy = frozen ? cpufreq_policy_restore(cpu) : NULL;
+ policy = recover_policy ? cpufreq_policy_restore(cpu) : NULL;
if (!policy) {
- frozen = false;
+ recover_policy = false;
policy = cpufreq_policy_alloc();
if (!policy)
goto nomem_out;
@@ -1102,7 +1102,7 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif,
* the creation of a brand new one. So we need to perform this update
* by invoking update_policy_cpu().
*/
- if (frozen && cpu != policy->cpu)
+ if (recover_policy && cpu != policy->cpu)
update_policy_cpu(policy, cpu);
else
policy->cpu = cpu;
@@ -1130,7 +1130,7 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif,
*/
cpumask_and(policy->cpus, policy->cpus, cpu_online_mask);
- if (!frozen) {
+ if (!recover_policy) {
policy->user_policy.min = policy->min;
policy->user_policy.max = policy->max;
}
@@ -1192,7 +1192,7 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif,
blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
CPUFREQ_START, policy);
- if (!frozen) {
+ if (!recover_policy) {
ret = cpufreq_add_dev_interface(policy, dev);
if (ret)
goto err_out_unregister;
@@ -1206,7 +1206,7 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif,
cpufreq_init_policy(policy);
- if (!frozen) {
+ if (!recover_policy) {
policy->user_policy.policy = policy->policy;
policy->user_policy.governor = policy->governor;
}
@@ -1229,7 +1229,7 @@ err_get_freq:
if (cpufreq_driver->exit)
cpufreq_driver->exit(policy);
err_set_policy_cpu:
- if (frozen) {
+ if (recover_policy) {
/* Do not leave stale fallback data behind. */
per_cpu(cpufreq_cpu_data_fallback, cpu) = NULL;
cpufreq_policy_put_kobj(policy);
@@ -1253,7 +1253,7 @@ nomem_out:
*/
static int cpufreq_add_dev(struct device *dev, struct subsys_interface *sif)
{
- return __cpufreq_add_dev(dev, sif, false);
+ return __cpufreq_add_dev(dev, sif);
}
static int cpufreq_nominate_new_policy_cpu(struct cpufreq_policy *policy,
@@ -1284,8 +1284,7 @@ static int cpufreq_nominate_new_policy_cpu(struct cpufreq_policy *policy,
}
static int __cpufreq_remove_dev_prepare(struct device *dev,
- struct subsys_interface *sif,
- bool frozen)
+ struct subsys_interface *sif)
{
unsigned int cpu = dev->id, cpus;
int new_cpu, ret;
@@ -1299,7 +1298,7 @@ static int __cpufreq_remove_dev_prepare(struct device *dev,
policy = per_cpu(cpufreq_cpu_data, cpu);
/* Save the policy somewhere when doing a light-weight tear-down */
- if (frozen)
+ if (cpufreq_suspended)
per_cpu(cpufreq_cpu_data_fallback, cpu) = policy;
write_unlock_irqrestore(&cpufreq_driver_lock, flags);
@@ -1332,7 +1331,7 @@ static int __cpufreq_remove_dev_prepare(struct device *dev,
if (new_cpu >= 0) {
update_policy_cpu(policy, new_cpu);
- if (!frozen) {
+ if (!cpufreq_suspended) {
pr_debug("%s: policy Kobject moved to cpu: %d from: %d\n",
__func__, new_cpu, cpu);
}
@@ -1343,8 +1342,7 @@ static int __cpufreq_remove_dev_prepare(struct device *dev,
}
static int __cpufreq_remove_dev_finish(struct device *dev,
- struct subsys_interface *sif,
- bool frozen)
+ struct subsys_interface *sif)
{
unsigned int cpu = dev->id, cpus;
int ret;
@@ -1379,7 +1377,7 @@ static int __cpufreq_remove_dev_finish(struct device *dev,
}
}
- if (!frozen)
+ if (!cpufreq_suspended)
cpufreq_policy_put_kobj(policy);
/*
@@ -1395,7 +1393,7 @@ static int __cpufreq_remove_dev_finish(struct device *dev,
list_del(&policy->policy_list);
write_unlock_irqrestore(&cpufreq_driver_lock, flags);
- if (!frozen)
+ if (!cpufreq_suspended)
cpufreq_policy_free(policy);
} else {
if (has_target()) {
@@ -1425,10 +1423,10 @@ static int cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif)
if (cpu_is_offline(cpu))
return 0;
- ret = __cpufreq_remove_dev_prepare(dev, sif, false);
+ ret = __cpufreq_remove_dev_prepare(dev, sif);
if (!ret)
- ret = __cpufreq_remove_dev_finish(dev, sif, false);
+ ret = __cpufreq_remove_dev_finish(dev, sif);
return ret;
}
@@ -2182,29 +2180,24 @@ static int cpufreq_cpu_callback(struct notifier_block *nfb,
{
unsigned int cpu = (unsigned long)hcpu;
struct device *dev;
- bool frozen = false;
dev = get_cpu_device(cpu);
if (dev) {
-
- if (action & CPU_TASKS_FROZEN)
- frozen = true;
-
switch (action & ~CPU_TASKS_FROZEN) {
case CPU_ONLINE:
- __cpufreq_add_dev(dev, NULL, frozen);
+ __cpufreq_add_dev(dev, NULL);
break;
case CPU_DOWN_PREPARE:
- __cpufreq_remove_dev_prepare(dev, NULL, frozen);
+ __cpufreq_remove_dev_prepare(dev, NULL);
break;
case CPU_POST_DEAD:
- __cpufreq_remove_dev_finish(dev, NULL, frozen);
+ __cpufreq_remove_dev_finish(dev, NULL);
break;
case CPU_DOWN_FAILED:
- __cpufreq_add_dev(dev, NULL, frozen);
+ __cpufreq_add_dev(dev, NULL);
break;
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 19:13:54 +0100