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 /* 26 * Define some priorities for the nmi notifier call chain. 27 * 28 * Create a local nmi bit that has a higher priority than 29 * external nmis, because the local ones are more frequent. 30 * 31 * Also setup some default high/normal/low settings for 32 * subsystems to registers with. Using 4 bits to separate 33 * the priorities. This can go a lot higher if needed be. 34 */ 35 36 #define NMI_LOCAL_SHIFT 16 /* randomly picked */ 37 #define NMI_LOCAL_BIT (1ULL << NMI_LOCAL_SHIFT) 38 #define NMI_HIGH_PRIOR (1ULL << 8) 39 #define NMI_NORMAL_PRIOR (1ULL << 4) 40 #define NMI_LOW_PRIOR (1ULL << 0) 41 #define NMI_LOCAL_HIGH_PRIOR (NMI_LOCAL_BIT | NMI_HIGH_PRIOR) 42 #define NMI_LOCAL_NORMAL_PRIOR (NMI_LOCAL_BIT | NMI_NORMAL_PRIOR) 43 #define NMI_LOCAL_LOW_PRIOR (NMI_LOCAL_BIT | NMI_LOW_PRIOR) 44 45 void stop_nmi(void); 46 void restart_nmi(void); 47 48 #endif /* _ASM_X86_NMI_H */ 49