linux-vybrid_public/include/asm-x86/mach-default/mach_apicdef.h

#ifndef __ASM_MACH_APICDEF_H
#define __ASM_MACH_APICDEF_H

#define		APIC_ID_MASK		(0xF<<24)

static inline unsigned get_apic_id(unsigned long x) 
{ 
	return (((x)>>24)&0xF);
} 

#define		GET_APIC_ID(x)	get_apic_id(x)

#endif