1. 根目录:
2. arch
3. x86
4. include
5. asm
6. cpu_device_id.h

#ifndef _CPU_DEVICE_ID
#define _CPU_DEVICE_ID 1

/*
 * Declare drivers belonging to specific x86 CPUs
 * Similar in spirit to pci_device_id and related PCI functions
 */

#include <linux/mod_devicetable.h>

extern const struct x86_cpu_id *x86_match_cpu(const struct x86_cpu_id *match);

#endif