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Commit | Line | Data |
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1 | /* | |
2 | * linux/include/linux/nmi.h | |
3 | */ | |
4 | #ifndef LINUX_NMI_H | |
5 | #define LINUX_NMI_H | |
6 | ||
7 | #include <linux/sched.h> | |
8 | #include <asm/irq.h> | |
9 | ||
10 | /** | |
11 | * touch_nmi_watchdog - restart NMI watchdog timeout. | |
12 | * | |
13 | * If the architecture supports the NMI watchdog, touch_nmi_watchdog() | |
14 | * may be used to reset the timeout - for code which intentionally | |
15 | * disables interrupts for a long time. This call is stateless. | |
16 | */ | |
17 | #ifdef ARCH_HAS_NMI_WATCHDOG | |
18 | #include <asm/nmi.h> | |
19 | extern void touch_nmi_watchdog(void); | |
20 | extern void acpi_nmi_disable(void); | |
21 | extern void acpi_nmi_enable(void); | |
22 | #else | |
23 | #ifndef CONFIG_NMI_WATCHDOG | |
24 | static inline void touch_nmi_watchdog(void) | |
25 | { | |
26 | touch_softlockup_watchdog(); | |
27 | } | |
28 | #else | |
29 | extern void touch_nmi_watchdog(void); | |
30 | #endif | |
31 | static inline void acpi_nmi_disable(void) { } | |
32 | static inline void acpi_nmi_enable(void) { } | |
33 | #endif | |
34 | ||
35 | /* | |
36 | * Create trigger_all_cpu_backtrace() out of the arch-provided | |
37 | * base function. Return whether such support was available, | |
38 | * to allow calling code to fall back to some other mechanism: | |
39 | */ | |
40 | #ifdef arch_trigger_all_cpu_backtrace | |
41 | static inline bool trigger_all_cpu_backtrace(void) | |
42 | { | |
43 | arch_trigger_all_cpu_backtrace(); | |
44 | ||
45 | return true; | |
46 | } | |
47 | #else | |
48 | static inline bool trigger_all_cpu_backtrace(void) | |
49 | { | |
50 | return false; | |
51 | } | |
52 | #endif | |
53 | ||
54 | #ifdef CONFIG_NMI_WATCHDOG | |
55 | int hw_nmi_is_cpu_stuck(struct pt_regs *); | |
56 | u64 hw_nmi_get_sample_period(void); | |
57 | extern int nmi_watchdog_enabled; | |
58 | struct ctl_table; | |
59 | extern int proc_nmi_enabled(struct ctl_table *, int , | |
60 | void __user *, size_t *, loff_t *); | |
61 | #endif | |
62 | ||
63 | #endif |