1 #ifndef _ASM_X86_NMI_H_
2 #define _ASM_X86_NMI_H_
8 #ifdef ARCH_HAS_NMI_WATCHDOG
13 * Check to see if a callback exists and execute it. Return 1
14 * if the handler exists and was handled successfully.
16 int do_nmi_callback(struct pt_regs *regs, int cpu);
19 extern void default_do_nmi(struct pt_regs *);
22 extern void die_nmi(char *str, struct pt_regs *regs, int do_panic);
23 extern int check_nmi_watchdog(void);
24 extern int nmi_watchdog_enabled;
25 extern int avail_to_resrv_perfctr_nmi_bit(unsigned int);
26 extern int avail_to_resrv_perfctr_nmi(unsigned int);
27 extern int reserve_perfctr_nmi(unsigned int);
28 extern void release_perfctr_nmi(unsigned int);
29 extern int reserve_evntsel_nmi(unsigned int);
30 extern void release_evntsel_nmi(unsigned int);
32 extern void setup_apic_nmi_watchdog(void *);
33 extern void stop_apic_nmi_watchdog(void *);
34 extern void disable_timer_nmi_watchdog(void);
35 extern void enable_timer_nmi_watchdog(void);
36 extern int nmi_watchdog_tick(struct pt_regs *regs, unsigned reason);
38 extern atomic_t nmi_active;
39 extern unsigned int nmi_watchdog;
42 #define NMI_LOCAL_APIC 2
47 extern int proc_nmi_enabled(struct ctl_table *, int , struct file *,
48 void __user *, size_t *, loff_t *);
49 extern int unknown_nmi_panic;
51 void __trigger_all_cpu_backtrace(void);
52 #define trigger_all_cpu_backtrace() __trigger_all_cpu_backtrace()
54 static inline void localise_nmi_watchdog(void)
56 if (nmi_watchdog == NMI_IO_APIC)
57 nmi_watchdog = NMI_LOCAL_APIC;
60 /* check if nmi_watchdog is active (ie was specified at boot) */
61 static inline int nmi_watchdog_active(void)
64 * actually it should be:
65 * return (nmi_watchdog == NMI_LOCAL_APIC ||
66 * nmi_watchdog == NMI_IO_APIC)
67 * but since they are power of two we could use a
70 return nmi_watchdog & 0x3;
74 void lapic_watchdog_stop(void);
75 int lapic_watchdog_init(unsigned nmi_hz);
76 int lapic_wd_event(unsigned nmi_hz);
77 unsigned lapic_adjust_nmi_hz(unsigned hz);
78 int lapic_watchdog_ok(void);
79 void disable_lapic_nmi_watchdog(void);
80 void enable_lapic_nmi_watchdog(void);
82 void restart_nmi(void);