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1 #ifndef _ASM_X86_NMI_H |
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2 #define _ASM_X86_NMI_H |
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3 |
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4 #include <linux/pm.h> |
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5 #include <asm/irq.h> |
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6 #include <asm/io.h> |
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7 |
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8 #ifdef ARCH_HAS_NMI_WATCHDOG |
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9 |
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10 /** |
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11 * do_nmi_callback |
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12 * |
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13 * Check to see if a callback exists and execute it. Return 1 |
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14 * if the handler exists and was handled successfully. |
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15 */ |
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16 int do_nmi_callback(struct pt_regs *regs, int cpu); |
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17 |
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18 extern void die_nmi(char *str, struct pt_regs *regs, int do_panic); |
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19 extern int check_nmi_watchdog(void); |
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20 extern int nmi_watchdog_enabled; |
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21 extern int avail_to_resrv_perfctr_nmi_bit(unsigned int); |
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22 extern int avail_to_resrv_perfctr_nmi(unsigned int); |
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23 extern int reserve_perfctr_nmi(unsigned int); |
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24 extern void release_perfctr_nmi(unsigned int); |
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25 extern int reserve_evntsel_nmi(unsigned int); |
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26 extern void release_evntsel_nmi(unsigned int); |
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27 |
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28 extern void setup_apic_nmi_watchdog(void *); |
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29 extern void stop_apic_nmi_watchdog(void *); |
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30 extern void disable_timer_nmi_watchdog(void); |
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31 extern void enable_timer_nmi_watchdog(void); |
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32 extern int nmi_watchdog_tick(struct pt_regs *regs, unsigned reason); |
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33 extern void cpu_nmi_set_wd_enabled(void); |
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34 |
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35 extern atomic_t nmi_active; |
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36 extern unsigned int nmi_watchdog; |
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37 #define NMI_NONE 0 |
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38 #define NMI_IO_APIC 1 |
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39 #define NMI_LOCAL_APIC 2 |
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40 #define NMI_INVALID 3 |
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41 |
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42 struct ctl_table; |
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43 struct file; |
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44 extern int proc_nmi_enabled(struct ctl_table *, int , struct file *, |
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45 void __user *, size_t *, loff_t *); |
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46 extern int unknown_nmi_panic; |
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47 |
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48 void __trigger_all_cpu_backtrace(void); |
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49 #define trigger_all_cpu_backtrace() __trigger_all_cpu_backtrace() |
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50 |
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51 static inline void localise_nmi_watchdog(void) |
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52 { |
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53 if (nmi_watchdog == NMI_IO_APIC) |
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54 nmi_watchdog = NMI_LOCAL_APIC; |
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55 } |
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56 |
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57 /* check if nmi_watchdog is active (ie was specified at boot) */ |
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58 static inline int nmi_watchdog_active(void) |
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59 { |
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60 /* |
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61 * actually it should be: |
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62 * return (nmi_watchdog == NMI_LOCAL_APIC || |
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63 * nmi_watchdog == NMI_IO_APIC) |
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64 * but since they are power of two we could use a |
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65 * cheaper way --cvg |
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66 */ |
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67 return nmi_watchdog & 0x3; |
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68 } |
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69 #endif |
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70 |
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71 void lapic_watchdog_stop(void); |
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72 int lapic_watchdog_init(unsigned nmi_hz); |
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73 int lapic_wd_event(unsigned nmi_hz); |
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74 unsigned lapic_adjust_nmi_hz(unsigned hz); |
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75 int lapic_watchdog_ok(void); |
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76 void disable_lapic_nmi_watchdog(void); |
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77 void enable_lapic_nmi_watchdog(void); |
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78 void stop_nmi(void); |
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79 void restart_nmi(void); |
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80 |
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81 #endif /* _ASM_X86_NMI_H */ |