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cpuidle / sysfs: change function parameter

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The function needs the cpuidle_device which is initially passed to the
caller.

The current code gets the struct device from the struct cpuidle_device,
pass it the cpuidle_add_sysfs function. This function calls
per_cpu(cpuidle_devices, cpu) to get the cpuidle_device.

This patch pass the cpuidle_device instead and simplify the code.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Daniel Lezcano 2012-10-26 12:26:24 +02:00 committed by Rafael J. Wysocki
parent 77b67063bb
commit 1aef40e288
3 changed files with 8 additions and 16 deletions
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8
drivers/cpuidle/cpuidle.c
View File

@ -394,7 +394,6 @@ EXPORT_SYMBOL_GPL(cpuidle_disable_device);
static int __cpuidle_register_device(struct cpuidle_device *dev)
{
int ret;
struct device *cpu_dev = get_cpu_device((unsigned long)dev->cpu);
struct cpuidle_driver *cpuidle_driver = cpuidle_get_driver();
if (!try_module_get(cpuidle_driver->owner))
@ -404,7 +403,7 @@ static int __cpuidle_register_device(struct cpuidle_device *dev)
per_cpu(cpuidle_devices, dev->cpu) = dev;
list_add(&dev->device_list, &cpuidle_detected_devices);
ret = cpuidle_add_sysfs(cpu_dev);
ret = cpuidle_add_sysfs(dev);
if (ret)
goto err_sysfs;
@ -416,7 +415,7 @@ static int __cpuidle_register_device(struct cpuidle_device *dev)
return 0;
err_coupled:
cpuidle_remove_sysfs(cpu_dev);
cpuidle_remove_sysfs(dev);
wait_for_completion(&dev->kobj_unregister);
err_sysfs:
list_del(&dev->device_list);
@ -460,7 +459,6 @@ EXPORT_SYMBOL_GPL(cpuidle_register_device);
*/
void cpuidle_unregister_device(struct cpuidle_device *dev)
{
struct device *cpu_dev = get_cpu_device((unsigned long)dev->cpu);
struct cpuidle_driver *cpuidle_driver = cpuidle_get_driver();
if (dev->registered == 0)
@ -470,7 +468,7 @@ void cpuidle_unregister_device(struct cpuidle_device *dev)
cpuidle_disable_device(dev);
cpuidle_remove_sysfs(cpu_dev);
cpuidle_remove_sysfs(dev);
list_del(&dev->device_list);
wait_for_completion(&dev->kobj_unregister);
per_cpu(cpuidle_devices, dev->cpu) = NULL;

4
drivers/cpuidle/cpuidle.h
View File

@ -29,8 +29,8 @@ extern int cpuidle_add_interface(struct device *dev);
extern void cpuidle_remove_interface(struct device *dev);
extern int cpuidle_add_state_sysfs(struct cpuidle_device *device);
extern void cpuidle_remove_state_sysfs(struct cpuidle_device *device);
extern int cpuidle_add_sysfs(struct device *dev);
extern void cpuidle_remove_sysfs(struct device *dev);
extern int cpuidle_add_sysfs(struct cpuidle_device *dev);
extern void cpuidle_remove_sysfs(struct cpuidle_device *dev);
#ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED
bool cpuidle_state_is_coupled(struct cpuidle_device *dev,

12
drivers/cpuidle/sysfs.c
View File

@ -408,13 +408,11 @@ void cpuidle_remove_state_sysfs(struct cpuidle_device *device)
* cpuidle_add_sysfs - creates a sysfs instance for the target device
* @dev: the target device
*/
int cpuidle_add_sysfs(struct device *cpu_dev)
int cpuidle_add_sysfs(struct cpuidle_device *dev)
{
int cpu = cpu_dev->id;
struct cpuidle_device *dev;
struct device *cpu_dev = get_cpu_device((unsigned long)dev->cpu);
int error;
dev = per_cpu(cpuidle_devices, cpu);
error = kobject_init_and_add(&dev->kobj, &ktype_cpuidle, &cpu_dev->kobj,
"cpuidle");
if (!error)
@ -426,11 +424,7 @@ int cpuidle_add_sysfs(struct device *cpu_dev)
* cpuidle_remove_sysfs - deletes a sysfs instance on the target device
* @dev: the target device
*/
void cpuidle_remove_sysfs(struct device *cpu_dev)
void cpuidle_remove_sysfs(struct cpuidle_device *dev)
{
int cpu = cpu_dev->id;
struct cpuidle_device *dev;
dev = per_cpu(cpuidle_devices, cpu);
kobject_put(&dev->kobj);
}