Fix kthread_create

diff -r a0370a9131be unmodified_drivers/linux-2.6/platform-pci/machine_reboot.c
@@ -17,12 +17,14 @@ struct ap_suspend_info {
 	atomic_t nr_spinning;
 };
 
+
 /*
  * Use a rwlock to protect the hypercall page from being executed in AP context
  * while the BSP is re-initializing it after restore.
  */
 static DEFINE_RWLOCK(suspend_lock);
 
+#ifdef CONFIG_SMP
 /*
  * Spinning prevents, for example, APs touching grant table entries while
  * the shared grant table is not mapped into the address space imemdiately

@@ -47,6 +49,8 @@ static void ap_suspend(void *_info)
 	mb();
 	atomic_dec(&info->nr_spinning);
 }
+
+#endif
 
 static int bp_suspend(void)
 {