diff options
Diffstat (limited to 'arch/x86/include/asm/nmi.h')
| -rw-r--r-- | arch/x86/include/asm/nmi.h | 65 |
1 files changed, 41 insertions, 24 deletions
diff --git a/arch/x86/include/asm/nmi.h b/arch/x86/include/asm/nmi.h index c76f5b92b84..5f2fc4441b1 100644 --- a/arch/x86/include/asm/nmi.h +++ b/arch/x86/include/asm/nmi.h @@ -1,13 +1,13 @@ #ifndef _ASM_X86_NMI_H #define _ASM_X86_NMI_H +#include <linux/irq_work.h> #include <linux/pm.h> #include <asm/irq.h> #include <asm/io.h> #ifdef CONFIG_X86_LOCAL_APIC -extern void die_nmi(char *str, struct pt_regs *regs, int do_panic); extern int avail_to_resrv_perfctr_nmi_bit(unsigned int); extern int reserve_perfctr_nmi(unsigned int); extern void release_perfctr_nmi(unsigned int); @@ -19,31 +19,48 @@ extern int proc_nmi_enabled(struct ctl_table *, int , void __user *, size_t *, loff_t *); extern int unknown_nmi_panic; -void arch_trigger_all_cpu_backtrace(void); -#define arch_trigger_all_cpu_backtrace arch_trigger_all_cpu_backtrace -#endif - -/* - * Define some priorities for the nmi notifier call chain. - * - * Create a local nmi bit that has a higher priority than - * external nmis, because the local ones are more frequent. - * - * Also setup some default high/normal/low settings for - * subsystems to registers with. Using 4 bits to seperate - * the priorities. This can go alot higher if needed be. - */ - -#define NMI_LOCAL_SHIFT 16 /* randomly picked */ -#define NMI_LOCAL_BIT (1ULL << NMI_LOCAL_SHIFT) -#define NMI_HIGH_PRIOR (1ULL << 8) -#define NMI_NORMAL_PRIOR (1ULL << 4) -#define NMI_LOW_PRIOR (1ULL << 0) -#define NMI_LOCAL_HIGH_PRIOR (NMI_LOCAL_BIT | NMI_HIGH_PRIOR) -#define NMI_LOCAL_NORMAL_PRIOR (NMI_LOCAL_BIT | NMI_NORMAL_PRIOR) -#define NMI_LOCAL_LOW_PRIOR (NMI_LOCAL_BIT | NMI_LOW_PRIOR) +#endif /* CONFIG_X86_LOCAL_APIC */ + +#define NMI_FLAG_FIRST 1 + +enum { + NMI_LOCAL=0, + NMI_UNKNOWN, + NMI_SERR, + NMI_IO_CHECK, + NMI_MAX +}; + +#define NMI_DONE 0 +#define NMI_HANDLED 1 + +typedef int (*nmi_handler_t)(unsigned int, struct pt_regs *); + +struct nmiaction { + struct list_head list; + nmi_handler_t handler; + u64 max_duration; + struct irq_work irq_work; + unsigned long flags; + const char *name; +}; + +#define register_nmi_handler(t, fn, fg, n, init...) \ +({ \ + static struct nmiaction init fn##_na = { \ + .handler = (fn), \ + .name = (n), \ + .flags = (fg), \ + }; \ + __register_nmi_handler((t), &fn##_na); \ +}) + +int __register_nmi_handler(unsigned int, struct nmiaction *); + +void unregister_nmi_handler(unsigned int, const char *); void stop_nmi(void); void restart_nmi(void); +void local_touch_nmi(void); #endif /* _ASM_X86_NMI_H */ |