projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 6d60cd53 GOC |
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 ARCH_HAS_NMI_WATCHDOG | |
| 9 | ||
| 10 | /** | |
| 11 | * do_nmi_callback | |
| 12 | * | |
| 13 | * Check to see if a callback exists and execute it. Return 1 | |
| 14 | * if the handler exists and was handled successfully. | |
| 15 | */ | |
| 16 | int do_nmi_callback(struct pt_regs *regs, int cpu); | |
| 17 | ||
| 6d60cd53 GOC |
18 | #ifdef CONFIG_X86_64 |
| 19 | extern void default_do_nmi(struct pt_regs *); | |
| 6d60cd53 GOC |
20 | #endif |
| 21 | ||
| ddca03c9 | 22 | extern void die_nmi(char *str, struct pt_regs *regs, int do_panic); |
| 6d60cd53 GOC |
23 | extern int check_nmi_watchdog(void); |
| 24 | extern int nmi_watchdog_enabled; | |
| 6d60cd53 GOC |
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); | |
| 6d60cd53 GOC |
31 | |
| 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); | |
| 37 | ||
| 38 | extern atomic_t nmi_active; | |
| 39 | extern unsigned int nmi_watchdog; | |
| 6d60cd53 GOC |
40 | #define NMI_NONE 0 |
| 41 | #define NMI_IO_APIC 1 | |
| 42 | #define NMI_LOCAL_APIC 2 | |
| 43 | #define NMI_INVALID 3 | |
| 6d60cd53 GOC |
44 | |
| 45 | struct ctl_table; | |
| 46 | struct file; | |
| 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; | |
| 50 | ||
| 51 | void __trigger_all_cpu_backtrace(void); | |
| 52 | #define trigger_all_cpu_backtrace() __trigger_all_cpu_backtrace() | |
| 53 | ||
| 148b5083 MR |
54 | static inline void localise_nmi_watchdog(void) |
| 55 | { | |
| 56 | if (nmi_watchdog == NMI_IO_APIC) | |
| 57 | nmi_watchdog = NMI_LOCAL_APIC; | |
| 58 | } | |
| 4de00436 CG |
59 | |
| 60 | /* check if nmi_watchdog is active (ie was specified at boot) */ | |
| 61 | static inline int nmi_watchdog_active(void) | |
| 62 | { | |
| 63 | /* | |
| 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 | |
| 68 | * cheaper way --cvg | |
| 69 | */ | |
| 70 | return nmi_watchdog & 0x3; | |
| 71 | } | |
| 6d60cd53 GOC |
72 | #endif |
| 73 | ||
| 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); | |
| 81 | void stop_nmi(void); | |
| 82 | void restart_nmi(void); | |
| 83 | ||
| 96a388de | 84 | #endif |