--- /dev/null
+#ifndef _ASM_IA64_CPU_H_
+#define _ASM_IA64_CPU_H_
+
+#include <linux/device.h>
+#include <linux/cpu.h>
+#include <linux/topology.h>
+#include <linux/percpu.h>
+
+struct ia64_cpu {
+ struct cpu cpu;
+};
+
+DECLARE_PER_CPU(struct ia64_cpu, cpu_devices);
+
+DECLARE_PER_CPU(int, cpu_state);
+
+#ifdef CONFIG_HOTPLUG_CPU
+extern int arch_register_cpu(int num);
+extern void arch_unregister_cpu(int);
+#endif
+
+#endif /* _ASM_IA64_CPU_H_ */