LXR linux/arch/x86/include/asm/nmi.h

   1#ifndef _ASM_X86_NMI_H
   2#define _ASM_X86_NMI_H
   3
   4#include <linux/irq_work.h>
   5#include <linux/pm.h>
   6#include <asm/irq.h>
   7#include <asm/io.h>
   8
   9#ifdef CONFIG_X86_LOCAL_APIC
  10
  11extern int avail_to_resrv_perfctr_nmi_bit(unsigned int);
  12extern int reserve_perfctr_nmi(unsigned int);
  13extern void release_perfctr_nmi(unsigned int);
  14extern int reserve_evntsel_nmi(unsigned int);
  15extern void release_evntsel_nmi(unsigned int);
  16
  17struct ctl_table;
  18extern int proc_nmi_enabled(struct ctl_table *, int ,
  19                        void __user *, size_t *, loff_t *);
  20extern int unknown_nmi_panic;
  21
  22#endif /* CONFIG_X86_LOCAL_APIC */
  23
  24#define NMI_FLAG_FIRST  1
  25
  26enum {
  27        NMI_LOCAL=0,
  28        NMI_UNKNOWN,
  29        NMI_SERR,
  30        NMI_IO_CHECK,
  31        NMI_MAX
  32};
  33
  34#define NMI_DONE        0
  35#define NMI_HANDLED     1
  36
  37typedef int (*nmi_handler_t)(unsigned int, struct pt_regs *);
  38
  39struct nmiaction {
  40        struct list_head        list;
  41        nmi_handler_t           handler;
  42        u64                     max_duration;
  43        struct irq_work         irq_work;
  44        unsigned long           flags;
  45        const char              *name;
  46};
  47
  48#define register_nmi_handler(t, fn, fg, n, init...)     \
  49({                                                      \
  50        static struct nmiaction init fn##_na = {        \
  51                .handler = (fn),                        \
  52                .name = (n),                            \
  53                .flags = (fg),                          \
  54        };                                              \
  55        __register_nmi_handler((t), &fn##_na);          \
  56})
  57
  58int __register_nmi_handler(unsigned int, struct nmiaction *);
  59
  60void unregister_nmi_handler(unsigned int, const char *);
  61
  62void stop_nmi(void);
  63void restart_nmi(void);
  64void local_touch_nmi(void);
  65
  66#endif /* _ASM_X86_NMI_H */
  67