#ifndef _ASM_X86_NMI_H #define _ASM_X86_NMI_H #include <linux/pm.h> #include <asm/irq.h> #include <asm/io.h> #ifdef ARCH_HAS_NMI_WATCHDOG /** * do_nmi_callback * * Check to see if a callback exists and execute it. Return 1 * if the handler exists and was handled successfully. */ int do_nmi_callback(struct pt_regs *regs, int cpu); extern void die_nmi(char *str, struct pt_regs *regs, int do_panic); extern int check_nmi_watchdog(void); extern int nmi_watchdog_enabled; extern int avail_to_resrv_perfctr_nmi_bit(unsigned int); extern int avail_to_resrv_perfctr_nmi(unsigned int); extern int reserve_perfctr_nmi(unsigned int); extern void release_perfctr_nmi(unsigned int); extern int reserve_evntsel_nmi(unsigned int); extern void release_evntsel_nmi(unsigned int); extern void setup_apic_nmi_watchdog(void *); extern void stop_apic_nmi_watchdog(void *); extern void disable_timer_nmi_watchdog(void); extern void enable_timer_nmi_watchdog(void); extern int nmi_watchdog_tick(struct pt_regs *regs, unsigned reason); extern void cpu_nmi_set_wd_enabled(void); extern atomic_t nmi_active; extern unsigned int nmi_watchdog; #define NMI_NONE 0 #define NMI_IO_APIC 1 #define NMI_LOCAL_APIC 2 #define NMI_INVALID 3 struct ctl_table; struct file; extern int proc_nmi_enabled(struct ctl_table *, int , struct file *, void __user *, size_t *, loff_t *); extern int unknown_nmi_panic; void __trigger_all_cpu_backtrace(void); #define trigger_all_cpu_backtrace() __trigger_all_cpu_backtrace() static inline void localise_nmi_watchdog(void) { if (nmi_watchdog == NMI_IO_APIC) nmi_watchdog = NMI_LOCAL_APIC; } /* check if nmi_watchdog is active (ie was specified at boot) */ static inline int nmi_watchdog_active(void) { /* * actually it should be: * return (nmi_watchdog == NMI_LOCAL_APIC || * nmi_watchdog == NMI_IO_APIC) * but since they are power of two we could use a * cheaper way --cvg */ return nmi_watchdog & 0x3; } #endif void lapic_watchdog_stop(void); int lapic_watchdog_init(unsigned nmi_hz); int lapic_wd_event(unsigned nmi_hz); unsigned lapic_adjust_nmi_hz(unsigned hz); int lapic_watchdog_ok(void); void disable_lapic_nmi_watchdog(void); void enable_lapic_nmi_watchdog(void); void stop_nmi(void); void restart_nmi(void); #endif /* _ASM_X86_NMI_H */