nmi.h 1.4 KB

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  1. /* SPDX-License-Identifier: GPL-2.0 */
  2. #ifndef _ASM_X86_NMI_H
  3. #define _ASM_X86_NMI_H
  4. #include <linux/irq_work.h>
  5. #include <linux/pm.h>
  6. #include <asm/irq.h>
  7. #include <asm/io.h>
  8. #ifdef CONFIG_X86_LOCAL_APIC
  9. extern int reserve_perfctr_nmi(unsigned int);
  10. extern void release_perfctr_nmi(unsigned int);
  11. extern int reserve_evntsel_nmi(unsigned int);
  12. extern void release_evntsel_nmi(unsigned int);
  13. struct ctl_table;
  14. extern int proc_nmi_enabled(struct ctl_table *, int ,
  15. void __user *, size_t *, loff_t *);
  16. extern int unknown_nmi_panic;
  17. #endif /* CONFIG_X86_LOCAL_APIC */
  18. #define NMI_FLAG_FIRST 1
  19. enum {
  20. NMI_LOCAL=0,
  21. NMI_UNKNOWN,
  22. NMI_SERR,
  23. NMI_IO_CHECK,
  24. NMI_MAX
  25. };
  26. #define NMI_DONE 0
  27. #define NMI_HANDLED 1
  28. typedef int (*nmi_handler_t)(unsigned int, struct pt_regs *);
  29. struct nmiaction {
  30. struct list_head list;
  31. nmi_handler_t handler;
  32. u64 max_duration;
  33. unsigned long flags;
  34. const char *name;
  35. };
  36. #define register_nmi_handler(t, fn, fg, n, init...) \
  37. ({ \
  38. static struct nmiaction init fn##_na = { \
  39. .list = LIST_HEAD_INIT(fn##_na.list), \
  40. .handler = (fn), \
  41. .name = (n), \
  42. .flags = (fg), \
  43. }; \
  44. __register_nmi_handler((t), &fn##_na); \
  45. })
  46. int __register_nmi_handler(unsigned int, struct nmiaction *);
  47. void unregister_nmi_handler(unsigned int, const char *);
  48. void stop_nmi(void);
  49. void restart_nmi(void);
  50. void local_touch_nmi(void);
  51. #endif /* _ASM_X86_NMI_H */