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 #define NMI_FLAG_FIRST 1 26 27 enum { 28 NMI_LOCAL=0, 29 NMI_UNKNOWN, 30 NMI_SERR, 31 NMI_IO_CHECK, 32 NMI_MAX 33 }; 34 35 #define NMI_DONE 0 36 #define NMI_HANDLED 1 37 38 typedef int (*nmi_handler_t)(unsigned int, struct pt_regs *); 39 40 struct nmiaction { 41 struct list_head list; 42 nmi_handler_t handler; 43 unsigned long flags; 44 const char *name; 45 }; 46 47 #define register_nmi_handler(t, fn, fg, n) \ 48 ({ \ 49 static struct nmiaction fn##_na = { \ 50 .handler = (fn), \ 51 .name = (n), \ 52 .flags = (fg), \ 53 }; \ 54 __register_nmi_handler((t), &fn##_na); \ 55 }) 56 57 /* 58 * For special handlers that register/unregister in the 59 * init section only. This should be considered rare. 60 */ 61 #define register_nmi_handler_initonly(t, fn, fg, n) \ 62 ({ \ 63 static struct nmiaction fn##_na __initdata = { \ 64 .handler = (fn), \ 65 .name = (n), \ 66 .flags = (fg), \ 67 }; \ 68 __register_nmi_handler((t), &fn##_na); \ 69 }) 70 71 int __register_nmi_handler(unsigned int, struct nmiaction *); 72 73 void unregister_nmi_handler(unsigned int, const char *); 74 75 void stop_nmi(void); 76 void restart_nmi(void); 77 void local_touch_nmi(void); 78 79 #endif /* _ASM_X86_NMI_H */ 80