summaryrefslogtreecommitdiffstats
path: root/drivers/cpuidle/cpuidle.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/cpuidle/cpuidle.c')
-rw-r--r--drivers/cpuidle/cpuidle.c36
1 files changed, 23 insertions, 13 deletions
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index ce4cac706dd..711dd83fd3b 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -68,7 +68,7 @@ static cpuidle_enter_t cpuidle_enter_ops;
int cpuidle_play_dead(void)
{
struct cpuidle_device *dev = __this_cpu_read(cpuidle_devices);
- struct cpuidle_driver *drv = cpuidle_get_driver();
+ struct cpuidle_driver *drv = cpuidle_get_cpu_driver(dev);
int i, dead_state = -1;
int power_usage = -1;
@@ -128,7 +128,7 @@ int cpuidle_enter_state(struct cpuidle_device *dev, struct cpuidle_driver *drv,
int cpuidle_idle_call(void)
{
struct cpuidle_device *dev = __this_cpu_read(cpuidle_devices);
- struct cpuidle_driver *drv = cpuidle_get_driver();
+ struct cpuidle_driver *drv;
int next_state, entered_state;
if (off)
@@ -141,6 +141,8 @@ int cpuidle_idle_call(void)
if (!dev || !dev->enabled)
return -EBUSY;
+ drv = cpuidle_get_cpu_driver(dev);
+
/* ask the governor for the next state */
next_state = cpuidle_curr_governor->select(drv, dev);
if (need_resched()) {
@@ -312,15 +314,19 @@ static void poll_idle_init(struct cpuidle_driver *drv) {}
int cpuidle_enable_device(struct cpuidle_device *dev)
{
int ret, i;
- struct cpuidle_driver *drv = cpuidle_get_driver();
+ struct cpuidle_driver *drv;
if (!dev)
return -EINVAL;
if (dev->enabled)
return 0;
+
+ drv = cpuidle_get_cpu_driver(dev);
+
if (!drv || !cpuidle_curr_governor)
return -EIO;
+
if (!dev->state_count)
dev->state_count = drv->state_count;
@@ -335,7 +341,8 @@ int cpuidle_enable_device(struct cpuidle_device *dev)
poll_idle_init(drv);
- if ((ret = cpuidle_add_state_sysfs(dev)))
+ ret = cpuidle_add_device_sysfs(dev);
+ if (ret)
return ret;
if (cpuidle_curr_governor->enable &&
@@ -356,7 +363,7 @@ int cpuidle_enable_device(struct cpuidle_device *dev)
return 0;
fail_sysfs:
- cpuidle_remove_state_sysfs(dev);
+ cpuidle_remove_device_sysfs(dev);
return ret;
}
@@ -372,17 +379,20 @@ EXPORT_SYMBOL_GPL(cpuidle_enable_device);
*/
void cpuidle_disable_device(struct cpuidle_device *dev)
{
+ struct cpuidle_driver *drv = cpuidle_get_cpu_driver(dev);
+
if (!dev || !dev->enabled)
return;
- if (!cpuidle_get_driver() || !cpuidle_curr_governor)
+
+ if (!drv || !cpuidle_curr_governor)
return;
dev->enabled = 0;
if (cpuidle_curr_governor->disable)
- cpuidle_curr_governor->disable(cpuidle_get_driver(), dev);
+ cpuidle_curr_governor->disable(drv, dev);
- cpuidle_remove_state_sysfs(dev);
+ cpuidle_remove_device_sysfs(dev);
enabled_devices--;
}
@@ -398,9 +408,9 @@ EXPORT_SYMBOL_GPL(cpuidle_disable_device);
static int __cpuidle_register_device(struct cpuidle_device *dev)
{
int ret;
- struct cpuidle_driver *cpuidle_driver = cpuidle_get_driver();
+ struct cpuidle_driver *drv = cpuidle_get_cpu_driver(dev);
- if (!try_module_get(cpuidle_driver->owner))
+ if (!try_module_get(drv->owner))
return -EINVAL;
per_cpu(cpuidle_devices, dev->cpu) = dev;
@@ -421,7 +431,7 @@ err_coupled:
err_sysfs:
list_del(&dev->device_list);
per_cpu(cpuidle_devices, dev->cpu) = NULL;
- module_put(cpuidle_driver->owner);
+ module_put(drv->owner);
return ret;
}
@@ -460,7 +470,7 @@ EXPORT_SYMBOL_GPL(cpuidle_register_device);
*/
void cpuidle_unregister_device(struct cpuidle_device *dev)
{
- struct cpuidle_driver *cpuidle_driver = cpuidle_get_driver();
+ struct cpuidle_driver *drv = cpuidle_get_cpu_driver(dev);
if (dev->registered == 0)
return;
@@ -477,7 +487,7 @@ void cpuidle_unregister_device(struct cpuidle_device *dev)
cpuidle_resume_and_unlock();
- module_put(cpuidle_driver->owner);
+ module_put(drv->owner);
}
EXPORT_SYMBOL_GPL(cpuidle_unregister_device);