nmi.h (1411B)
1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _ASM_X86_NMI_H 3#define _ASM_X86_NMI_H 4 5#include <linux/irq_work.h> 6#include <linux/pm.h> 7#include <asm/irq.h> 8#include <asm/io.h> 9 10#ifdef CONFIG_X86_LOCAL_APIC 11 12extern int reserve_perfctr_nmi(unsigned int); 13extern void release_perfctr_nmi(unsigned int); 14extern int reserve_evntsel_nmi(unsigned int); 15extern void release_evntsel_nmi(unsigned int); 16 17struct ctl_table; 18extern int proc_nmi_enabled(struct ctl_table *, int , 19 void __user *, size_t *, loff_t *); 20extern int unknown_nmi_panic; 21 22#endif /* CONFIG_X86_LOCAL_APIC */ 23 24#define NMI_FLAG_FIRST 1 25 26enum { 27 NMI_LOCAL=0, 28 NMI_UNKNOWN, 29 NMI_SERR, 30 NMI_IO_CHECK, 31 NMI_MAX 32}; 33 34#define NMI_DONE 0 35#define NMI_HANDLED 1 36 37typedef int (*nmi_handler_t)(unsigned int, struct pt_regs *); 38 39struct nmiaction { 40 struct list_head list; 41 nmi_handler_t handler; 42 u64 max_duration; 43 unsigned long flags; 44 const char *name; 45}; 46 47#define register_nmi_handler(t, fn, fg, n, init...) \ 48({ \ 49 static struct nmiaction init fn##_na = { \ 50 .list = LIST_HEAD_INIT(fn##_na.list), \ 51 .handler = (fn), \ 52 .name = (n), \ 53 .flags = (fg), \ 54 }; \ 55 __register_nmi_handler((t), &fn##_na); \ 56}) 57 58int __register_nmi_handler(unsigned int, struct nmiaction *); 59 60void unregister_nmi_handler(unsigned int, const char *); 61 62void stop_nmi(void); 63void restart_nmi(void); 64void local_touch_nmi(void); 65 66#endif /* _ASM_X86_NMI_H */