+/* Per cpu sysdev init. All of the cpus still share the same ctl bank */
+static __cpuinit int mce_create_device(unsigned int cpu)
+{
+ int err;
+ int i;
+ if (!mce_available(&cpu_data[cpu]))
+ return -EIO;
+
+ per_cpu(device_mce,cpu).id = cpu;
+ per_cpu(device_mce,cpu).cls = &mce_sysclass;
+
+ err = sysdev_register(&per_cpu(device_mce,cpu));
+
+ if (!err) {
+ for (i = 0; i < banks; i++)
+ sysdev_create_file(&per_cpu(device_mce,cpu),
+ bank_attributes[i]);
+ sysdev_create_file(&per_cpu(device_mce,cpu), &attr_tolerant);
+ sysdev_create_file(&per_cpu(device_mce,cpu), &attr_check_interval);
+ }
+ return err;
+}
+
+#ifdef CONFIG_HOTPLUG_CPU
+static __cpuinit void mce_remove_device(unsigned int cpu)
+{
+ int i;
+
+ for (i = 0; i < banks; i++)
+ sysdev_remove_file(&per_cpu(device_mce,cpu),
+ bank_attributes[i]);
+ sysdev_remove_file(&per_cpu(device_mce,cpu), &attr_tolerant);
+ sysdev_remove_file(&per_cpu(device_mce,cpu), &attr_check_interval);
+ sysdev_unregister(&per_cpu(device_mce,cpu));
+}
+#endif
+
+/* Get notified when a cpu comes on/off. Be hotplug friendly. */
+static int
+mce_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
+{
+ unsigned int cpu = (unsigned long)hcpu;
+
+ switch (action) {
+ case CPU_ONLINE:
+ mce_create_device(cpu);
+ break;
+#ifdef CONFIG_HOTPLUG_CPU
+ case CPU_DEAD:
+ mce_remove_device(cpu);
+ break;
+#endif
+ }
+ return NOTIFY_OK;
+}
+
+static struct notifier_block mce_cpu_notifier = {
+ .notifier_call = mce_cpu_callback,
+};
+