extern cpumask_t cpu_sibling_map[];
extern void smp_flush_tlb(void);
-extern void dump_send_ipi(void);
extern void smp_message_irq(int cpl, void *dev_id, struct pt_regs *regs);
extern void smp_invalidate_rcv(void); /* Process an NMI */
extern void (*mtrr_hook) (void);