diff --git a/arch/i386/kernel/acpi/boot.c b/arch/i386/kernel/acpi/boot.c
index f3761b98c8dd88cdd8fa600881ecd002317c7f08..c809a3f4c0bf3dec54f9fa85be2831e08c50a6a3 100644
--- a/arch/i386/kernel/acpi/boot.c
+++ b/arch/i386/kernel/acpi/boot.c
@@ -47,9 +47,6 @@ EXPORT_SYMBOL(acpi_disabled);
 
 #ifdef	CONFIG_X86_64
 
-extern void __init clustered_apic_check(void);
-
-extern int gsi_irq_sharing(int gsi);
 #include <asm/proto.h>
 
 static inline int acpi_madt_oem_check(char *oem_id, char *oem_table_id) { return 0; }
diff --git a/include/asm-x86_64/proto.h b/include/asm-x86_64/proto.h
index 151826f8ce69129ffd61e6d00f335d1628dbd650..b73d0c76613c3dabb9be4da43077b6bd0d43ac08 100644
--- a/include/asm-x86_64/proto.h
+++ b/include/asm-x86_64/proto.h
@@ -124,6 +124,8 @@ extern int fix_aperture;
 extern int reboot_force;
 extern int notsc_setup(char *);
 
+extern int gsi_irq_sharing(int gsi);
+
 extern void smp_local_timer_interrupt(struct pt_regs * regs);
 
 long do_arch_prctl(struct task_struct *task, int code, unsigned long addr);