Pileus Git - ~andy/linux/blob - arch/x86/include/asm/nmi.h

   1 #ifndef _ASM_X86_NMI_H
   2 #define _ASM_X86_NMI_H
   3
   4 #include <linux/pm.h>
   5 #include <asm/irq.h>
   6 #include <asm/io.h>
   7
   8 #ifdef CONFIG_X86_LOCAL_APIC
   9
  10 extern int avail_to_resrv_perfctr_nmi_bit(unsigned int);
  11 extern int reserve_perfctr_nmi(unsigned int);
  12 extern void release_perfctr_nmi(unsigned int);
  13 extern int reserve_evntsel_nmi(unsigned int);
  14 extern void release_evntsel_nmi(unsigned int);
  15
  16 struct ctl_table;
  17 extern int proc_nmi_enabled(struct ctl_table *, int ,
  18                         void __user *, size_t *, loff_t *);
  19 extern int unknown_nmi_panic;
  20
  21 void arch_trigger_all_cpu_backtrace(void);
  22 #define arch_trigger_all_cpu_backtrace arch_trigger_all_cpu_backtrace
  23 #endif
  24
  25 #define NMI_FLAG_FIRST  1
  26
  27 enum {
  28         NMI_LOCAL=0,
  29         NMI_UNKNOWN,
  30         NMI_SERR,
  31         NMI_IO_CHECK,
  32         NMI_MAX
  33 };
  34
  35 #define NMI_DONE        0
  36 #define NMI_HANDLED     1
  37
  38 typedef int (*nmi_handler_t)(unsigned int, struct pt_regs *);
  39
  40 struct nmiaction {
  41         struct list_head        list;
  42         nmi_handler_t           handler;
  43         unsigned long           flags;
  44         const char              *name;
  45 };
  46
  47 #define register_nmi_handler(t, fn, fg, n)              \
  48 ({                                                      \
  49         static struct nmiaction fn##_na = {             \
  50                 .handler = (fn),                        \
  51                 .name = (n),                            \
  52                 .flags = (fg),                          \
  53         };                                              \
  54         __register_nmi_handler((t), &fn##_na);  \
  55 })
  56
  57 /*
  58  * For special handlers that register/unregister in the
  59  * init section only.  This should be considered rare.
  60  */
  61 #define register_nmi_handler_initonly(t, fn, fg, n)             \
  62 ({                                                      \
  63         static struct nmiaction fn##_na __initdata = {          \
  64                 .handler = (fn),                        \
  65                 .name = (n),                            \
  66                 .flags = (fg),                          \
  67         };                                              \
  68         __register_nmi_handler((t), &fn##_na);  \
  69 })
  70
  71 int __register_nmi_handler(unsigned int, struct nmiaction *);
  72
  73 void unregister_nmi_handler(unsigned int, const char *);
  74
  75 void stop_nmi(void);
  76 void restart_nmi(void);
  77 void local_touch_nmi(void);
  78
  79 #endif /* _ASM_X86_NMI_H */