tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef ASM_NMI_H
2#define ASM_NMI_H
3
4#include <linux/pm.h>
5#include <asm/io.h>
6
7/**
8 * do_nmi_callback
9 *
10 * Check to see if a callback exists and execute it. Return 1
11 * if the handler exists and was handled successfully.
12 */
13int do_nmi_callback(struct pt_regs *regs, int cpu);
14
15#ifdef CONFIG_PM
16
17/** Replace the PM callback routine for NMI. */
18struct pm_dev * set_nmi_pm_callback(pm_callback callback);
19
20/** Unset the PM callback routine back to the default. */
21void unset_nmi_pm_callback(struct pm_dev * dev);
22
23#else
24
25static inline struct pm_dev * set_nmi_pm_callback(pm_callback callback)
26{
27 return 0;
28}
29
30static inline void unset_nmi_pm_callback(struct pm_dev * dev)
31{
32}
33
34#endif /* CONFIG_PM */
35
36extern void default_do_nmi(struct pt_regs *);
37extern void die_nmi(char *str, struct pt_regs *regs, int do_panic);
38
39#define get_nmi_reason() inb(0x61)
40
41extern int unknown_nmi_panic;
42extern int nmi_watchdog_enabled;
43
44extern int check_nmi_watchdog(void);
45extern int avail_to_resrv_perfctr_nmi_bit(unsigned int);
46extern int avail_to_resrv_perfctr_nmi(unsigned int);
47extern int reserve_perfctr_nmi(unsigned int);
48extern void release_perfctr_nmi(unsigned int);
49extern int reserve_evntsel_nmi(unsigned int);
50extern void release_evntsel_nmi(unsigned int);
51
52extern void setup_apic_nmi_watchdog (void *);
53extern void stop_apic_nmi_watchdog (void *);
54extern void disable_timer_nmi_watchdog(void);
55extern void enable_timer_nmi_watchdog(void);
56extern int nmi_watchdog_tick (struct pt_regs * regs, unsigned reason);
57
58extern void nmi_watchdog_default(void);
59
60extern atomic_t nmi_active;
61extern unsigned int nmi_watchdog;
62#define NMI_DISABLED -1
63#define NMI_NONE 0
64#define NMI_IO_APIC 1
65#define NMI_LOCAL_APIC 2
66#define NMI_INVALID 3
67#define NMI_DEFAULT NMI_DISABLED
68
69struct ctl_table;
70struct file;
71extern int proc_nmi_enabled(struct ctl_table *, int , struct file *,
72 void __user *, size_t *, loff_t *);
73
74extern int unknown_nmi_panic;
75
76void __trigger_all_cpu_backtrace(void);
77#define trigger_all_cpu_backtrace() __trigger_all_cpu_backtrace()
78
79
80void lapic_watchdog_stop(void);
81int lapic_watchdog_init(unsigned nmi_hz);
82int lapic_wd_event(unsigned nmi_hz);
83unsigned lapic_adjust_nmi_hz(unsigned hz);
84int lapic_watchdog_ok(void);
85void disable_lapic_nmi_watchdog(void);
86void enable_lapic_nmi_watchdog(void);
87void stop_nmi(void);
88void restart_nmi(void);
89
90#endif /* ASM_NMI_H */