2 * linux/include/linux/nmi.h
7 #include <linux/sched.h>
11 * touch_nmi_watchdog - restart NMI watchdog timeout.
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.
17 #if defined(CONFIG_HAVE_NMI_WATCHDOG) || defined(CONFIG_HARDLOCKUP_DETECTOR)
19 extern void touch_nmi_watchdog(void);
21 static inline void touch_nmi_watchdog(void)
23 touch_softlockup_watchdog();
27 #if defined(CONFIG_HARDLOCKUP_DETECTOR)
28 extern void hardlockup_detector_disable(void);
30 static inline void hardlockup_detector_disable(void) {}
34 * Create trigger_all_cpu_backtrace() out of the arch-provided
35 * base function. Return whether such support was available,
36 * to allow calling code to fall back to some other mechanism:
38 #ifdef arch_trigger_all_cpu_backtrace
39 static inline bool trigger_all_cpu_backtrace(void)
41 arch_trigger_all_cpu_backtrace(true);
45 static inline bool trigger_allbutself_cpu_backtrace(void)
47 arch_trigger_all_cpu_backtrace(false);
51 static inline bool trigger_all_cpu_backtrace(void)
55 static inline bool trigger_allbutself_cpu_backtrace(void)
61 #ifdef CONFIG_LOCKUP_DETECTOR
62 int hw_nmi_is_cpu_stuck(struct pt_regs *);
63 u64 hw_nmi_get_sample_period(int watchdog_thresh);
64 extern int nmi_watchdog_enabled;
65 extern int soft_watchdog_enabled;
66 extern int watchdog_user_enabled;
67 extern int watchdog_thresh;
68 extern unsigned long *watchdog_cpumask_bits;
69 extern int sysctl_softlockup_all_cpu_backtrace;
71 extern int proc_watchdog(struct ctl_table *, int ,
72 void __user *, size_t *, loff_t *);
73 extern int proc_nmi_watchdog(struct ctl_table *, int ,
74 void __user *, size_t *, loff_t *);
75 extern int proc_soft_watchdog(struct ctl_table *, int ,
76 void __user *, size_t *, loff_t *);
77 extern int proc_watchdog_thresh(struct ctl_table *, int ,
78 void __user *, size_t *, loff_t *);
79 extern int proc_watchdog_cpumask(struct ctl_table *, int,
80 void __user *, size_t *, loff_t *);
81 extern int lockup_detector_suspend(void);
82 extern void lockup_detector_resume(void);
84 static inline int lockup_detector_suspend(void)
89 static inline void lockup_detector_resume(void)
94 #ifdef CONFIG_HAVE_ACPI_APEI_NMI