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

#ifndef _ASM_X86_KDEBUG_H
#define _ASM_X86_KDEBUG_H

#include <linux/notifier.h>

struct pt_regs;

/* Grossly misnamed. */
enum die_val {
	DIE_OOPS = 1,
	DIE_INT3,
	DIE_DEBUG,
	DIE_PANIC,
	DIE_NMI,
	DIE_DIE,
	DIE_KERNELDEBUG,
	DIE_TRAP,
	DIE_GPF,
	DIE_CALL,
	DIE_PAGE_FAULT,
	DIE_NMIUNKNOWN,
};

extern void printk_address(unsigned long address);
extern void die(const char *, struct pt_regs *,long);
extern int __must_check __die(const char *, struct pt_regs *, long);
extern void show_trace(struct task_struct *t, struct pt_regs *regs,
		       unsigned long *sp, unsigned long bp);
extern void __show_regs(struct pt_regs *regs, int all);
extern unsigned long oops_begin(void);
extern void oops_end(unsigned long, struct pt_regs *, int signr);
#ifdef CONFIG_KEXEC
extern int in_crash_kexec;
#else
/* no crash dump is ever in progress if no crash kernel can be kexec'd */
#define in_crash_kexec 0
#endif

#endif /* _ASM_X86_KDEBUG_H */