We have used 'frozen' variable/function parameter at many places to
differentiate CPU hotplugging on suspend/resume vs sysfs removals. We now have
another variable cpufreq_suspended which can be used in these cases and hence we
can get rid of all those variables or function parameters.
Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
---
drivers/cpufreq/cpufreq.c | 51 ++++++++++++++++++++---------------------------
1 file changed, 22 insertions(+), 29 deletions(-)
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index aae9dc1..53f5d0b6 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1042,13 +1042,13 @@ 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
@@ -1089,9 +1089,9 @@ 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;
@@ -1103,7 +1103,7 @@ 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;
@@ -1131,7 +1131,7 @@ 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;
}
@@ -1193,7 +1193,7 @@ 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;
@@ -1207,7 +1207,7 @@ 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;
}
@@ -1230,7 +1230,7 @@ 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);
@@ -1254,7 +1254,7 @@ 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,
@@ -1285,8 +1285,7 @@ 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;
@@ -1300,7 +1299,7 @@ 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);
@@ -1333,7 +1332,7 @@ 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);
}
@@ -1344,8 +1343,7 @@ 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;
@@ -1380,7 +1378,7 @@ static int __cpufreq_remove_dev_finish(struct device *dev,
}
}
- if (!frozen)
+ if (!cpufreq_suspended)
cpufreq_policy_put_kobj(policy);
/*
@@ -1396,7 +1394,7 @@ 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()) {
@@ -1426,10 +1424,10 @@ 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;
}
@@ -2187,29 +2185,24 @@ 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;
}
}
--
1.7.12.rc2.18.g61b472e
--
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