Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/include/linux/nmi.h | |
3 | */ | |
4 | #ifndef LINUX_NMI_H | |
5 | #define LINUX_NMI_H | |
6 | ||
9938406a | 7 | #include <linux/sched.h> |
1da177e4 LT |
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 | */ | |
6fa3eb70 | 17 | #if defined(CONFIG_HAVE_NMI_WATCHDOG) || defined(CONFIG_HARDLOCKUP_DETECTOR_NMI) |
bb81a09e | 18 | #include <asm/nmi.h> |
6fa3eb70 S |
19 | #endif |
20 | ||
21 | #if defined(CONFIG_HAVE_NMI_WATCHDOG) || defined(CONFIG_HARDLOCKUP_DETECTOR) | |
96a84c20 DZ |
22 | extern void touch_nmi_watchdog(void); |
23 | #else | |
5d0e600d IM |
24 | static inline void touch_nmi_watchdog(void) |
25 | { | |
26 | touch_softlockup_watchdog(); | |
27 | } | |
96a84c20 | 28 | #endif |
1da177e4 | 29 | |
47cab6a7 IM |
30 | /* |
31 | * Create trigger_all_cpu_backtrace() out of the arch-provided | |
32 | * base function. Return whether such support was available, | |
33 | * to allow calling code to fall back to some other mechanism: | |
34 | */ | |
35 | #ifdef arch_trigger_all_cpu_backtrace | |
36 | static inline bool trigger_all_cpu_backtrace(void) | |
37 | { | |
38 | arch_trigger_all_cpu_backtrace(); | |
39 | ||
40 | return true; | |
41 | } | |
42 | #else | |
43 | static inline bool trigger_all_cpu_backtrace(void) | |
44 | { | |
45 | return false; | |
46 | } | |
bb81a09e AM |
47 | #endif |
48 | ||
58687acb | 49 | #ifdef CONFIG_LOCKUP_DETECTOR |
84e478c6 | 50 | int hw_nmi_is_cpu_stuck(struct pt_regs *); |
4eec42f3 | 51 | u64 hw_nmi_get_sample_period(int watchdog_thresh); |
58687acb | 52 | extern int watchdog_enabled; |
586692a5 | 53 | extern int watchdog_thresh; |
504d7cf1 | 54 | struct ctl_table; |
586692a5 MSB |
55 | extern int proc_dowatchdog(struct ctl_table *, int , |
56 | void __user *, size_t *, loff_t *); | |
84e478c6 DZ |
57 | #endif |
58 | ||
1da177e4 | 59 | #endif |