[PATCH] Notify page fault call chain for x86_64

[deliverable/linux.git] / include / asm-x86_64 / kdebug.h

#ifndef _X86_64_KDEBUG_H
#define _X86_64_KDEBUG_H 1

#include <linux/notifier.h>

struct pt_regs;

struct die_args {
	struct pt_regs *regs;
	const char *str;
	long err;
	int trapnr;
	int signr;
};

extern int register_die_notifier(struct notifier_block *);
extern int unregister_die_notifier(struct notifier_block *);
extern int register_page_fault_notifier(struct notifier_block *);
extern int unregister_page_fault_notifier(struct notifier_block *);
extern struct atomic_notifier_head die_chain;

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

static inline int notify_die(enum die_val val, const char *str,
			struct pt_regs *regs, long err, int trap, int sig)
{
	struct die_args args = {
		.regs = regs,
		.str = str,
		.err = err,
		.trapnr = trap,
		.signr = sig
	};
	return atomic_notifier_call_chain(&die_chain, val, &args);
} 

extern int printk_address(unsigned long address);
extern void die(const char *,struct pt_regs *,long);
extern void __die(const char *,struct pt_regs *,long);
extern void show_registers(struct pt_regs *regs);
extern void dump_pagetable(unsigned long);
extern unsigned long oops_begin(void);
extern void oops_end(unsigned long);

#endif