Release 4.14 arch/x86/include/asm/nmi.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_NMI_H

#define _ASM_X86_NMI_H

#include <linux/irq_work.h>
#include <linux/pm.h>
#include <asm/irq.h>
#include <asm/io.h>

#ifdef CONFIG_X86_LOCAL_APIC

extern int avail_to_resrv_perfctr_nmi_bit(unsigned int);
extern int reserve_perfctr_nmi(unsigned int);
extern void release_perfctr_nmi(unsigned int);
extern int reserve_evntsel_nmi(unsigned int);
extern void release_evntsel_nmi(unsigned int);

struct ctl_table;
extern int proc_nmi_enabled(struct ctl_table *, int ,
			void __user *, size_t *, loff_t *);
extern int unknown_nmi_panic;

#endif /* CONFIG_X86_LOCAL_APIC */


#define NMI_FLAG_FIRST	1

enum {
	
NMI_LOCAL=0,
	
NMI_UNKNOWN,
	
NMI_SERR,
	
NMI_IO_CHECK,
	
NMI_MAX
};


#define NMI_DONE	0

#define NMI_HANDLED	1


typedef int (*nmi_handler_t)(unsigned int, struct pt_regs *);


struct nmiaction {
	
struct list_head	list;
	
nmi_handler_t		handler;
	
u64			max_duration;
	
struct irq_work		irq_work;
	
unsigned long		flags;
	
const char		*name;
};


#define register_nmi_handler(t, fn, fg, n, init...)	\
({                                                      \
        static struct nmiaction init fn##_na = {        \
                .handler = (fn),                        \
                .name = (n),                            \
                .flags = (fg),                          \
        };                                              \
        __register_nmi_handler((t), &fn##_na);          \
})

int __register_nmi_handler(unsigned int, struct nmiaction *);

void unregister_nmi_handler(unsigned int, const char *);

void stop_nmi(void);
void restart_nmi(void);
void local_touch_nmi(void);

#endif /* _ASM_X86_NMI_H */
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Directory: arch/x86/include/asm

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