EXPORT_SYMBOL(cpu_sysdev_class);
#ifdef CONFIG_HOTPLUG_CPU
+int __attribute__((weak)) smp_prepare_cpu (int cpu)
+{
+ return 0;
+}
+
static ssize_t show_online(struct sys_device *dev, char *buf)
{
struct cpu *cpu = container_of(dev, struct cpu, sysdev);
kobject_hotplug(&dev->kobj, KOBJ_OFFLINE);
break;
case '1':
- ret = cpu_up(cpu->sysdev.id);
+ ret = smp_prepare_cpu(cpu->sysdev.id);
+ if (!ret)
+ ret = cpu_up(cpu->sysdev.id);
+ if (!ret)
+ kobject_hotplug(&dev->kobj, KOBJ_ONLINE);
break;
default:
ret = -EINVAL;