#include <linux/major.h>
#include <linux/fs.h>
#include <linux/smp_lock.h>
-#include <linux/fs.h>
#include <linux/device.h>
#include <linux/cpu.h>
#include <linux/notifier.h>
.open = cpuid_open,
};
-static int cpuid_class_device_create(int i)
+static int cpuid_device_create(int i)
{
int err = 0;
- struct class_device *class_err;
+ struct device *dev;
- class_err = class_device_create(cpuid_class, NULL, MKDEV(CPUID_MAJOR, i), NULL, "cpu%d",i);
- if (IS_ERR(class_err))
- err = PTR_ERR(class_err);
+ dev = device_create(cpuid_class, NULL, MKDEV(CPUID_MAJOR, i), "cpu%d",i);
+ if (IS_ERR(dev))
+ err = PTR_ERR(dev);
return err;
}
+#ifdef CONFIG_HOTPLUG_CPU
static int cpuid_class_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
{
unsigned int cpu = (unsigned long)hcpu;
switch (action) {
case CPU_ONLINE:
- cpuid_class_device_create(cpu);
+ cpuid_device_create(cpu);
break;
case CPU_DEAD:
- class_device_destroy(cpuid_class, MKDEV(CPUID_MAJOR, cpu));
+ device_destroy(cpuid_class, MKDEV(CPUID_MAJOR, cpu));
break;
}
return NOTIFY_OK;
{
.notifier_call = cpuid_class_cpu_callback,
};
+#endif /* !CONFIG_HOTPLUG_CPU */
static int __init cpuid_init(void)
{
goto out_chrdev;
}
for_each_online_cpu(i) {
- err = cpuid_class_device_create(i);
+ err = cpuid_device_create(i);
if (err != 0)
goto out_class;
}
- register_cpu_notifier(&cpuid_class_cpu_notifier);
+ register_hotcpu_notifier(&cpuid_class_cpu_notifier);
err = 0;
goto out;
out_class:
i = 0;
for_each_online_cpu(i) {
- class_device_destroy(cpuid_class, MKDEV(CPUID_MAJOR, i));
+ device_destroy(cpuid_class, MKDEV(CPUID_MAJOR, i));
}
class_destroy(cpuid_class);
out_chrdev:
int cpu = 0;
for_each_online_cpu(cpu)
- class_device_destroy(cpuid_class, MKDEV(CPUID_MAJOR, cpu));
+ device_destroy(cpuid_class, MKDEV(CPUID_MAJOR, cpu));
class_destroy(cpuid_class);
unregister_chrdev(CPUID_MAJOR, "cpu/cpuid");
- unregister_cpu_notifier(&cpuid_class_cpu_notifier);
+ unregister_hotcpu_notifier(&cpuid_class_cpu_notifier);
}
module_init(cpuid_init);