-#ifdef CONFIG_SMP
-static int oprofile_cpu_notifier(struct notifier_block *b, unsigned long action,
- void *data)
-{
- int cpu = (unsigned long)data;
- switch (action) {
- case CPU_DOWN_FAILED:
- case CPU_ONLINE:
- smp_call_function_single(cpu, nmi_cpu_start, NULL, 0);
- break;
- case CPU_DOWN_PREPARE:
- smp_call_function_single(cpu, nmi_cpu_stop, NULL, 1);
- break;
- }
- return NOTIFY_DONE;
-}
-
-static struct notifier_block oprofile_cpu_nb = {
- .notifier_call = oprofile_cpu_notifier
-};
-#endif
-
-#ifdef CONFIG_PM
-
-static int nmi_suspend(struct sys_device *dev, pm_message_t state)
-{
- /* Only one CPU left, just stop that one */
- if (nmi_enabled == 1)
- nmi_cpu_stop(NULL);
- return 0;
-}
-
-static int nmi_resume(struct sys_device *dev)
-{
- if (nmi_enabled == 1)
- nmi_cpu_start(NULL);
- return 0;
-}
-
-static struct sysdev_class oprofile_sysclass = {
- .name = "oprofile",
- .resume = nmi_resume,
- .suspend = nmi_suspend,
-};
-
-static struct sys_device device_oprofile = {
- .id = 0,
- .cls = &oprofile_sysclass,
-};
-
-static int __init init_sysfs(void)
-{
- int error;
-
- error = sysdev_class_register(&oprofile_sysclass);
- if (!error)
- error = sysdev_register(&device_oprofile);
- return error;
-}
-
-static void exit_sysfs(void)
-{
- sysdev_unregister(&device_oprofile);
- sysdev_class_unregister(&oprofile_sysclass);
-}
-
-#else
-#define init_sysfs() do { } while (0)
-#define exit_sysfs() do { } while (0)
-#endif /* CONFIG_PM */
-