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)
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:
40 #ifdef arch_trigger_all_cpu_backtrace
41 static inline bool trigger_all_cpu_backtrace(void)
43 arch_trigger_all_cpu_backtrace(true);
47 static inline bool trigger_allbutself_cpu_backtrace(void)
49 arch_trigger_all_cpu_backtrace(false);
53 static inline bool trigger_all_cpu_backtrace(void)
57 static inline bool trigger_allbutself_cpu_backtrace(void)
63 #ifdef CONFIG_LOCKUP_DETECTOR
64 int hw_nmi_is_cpu_stuck(struct pt_regs
*);
65 u64
hw_nmi_get_sample_period(int watchdog_thresh
);
66 extern int nmi_watchdog_enabled
;
67 extern int soft_watchdog_enabled
;
68 extern int watchdog_user_enabled
;
69 extern int watchdog_thresh
;
70 extern unsigned long *watchdog_cpumask_bits
;
71 extern int sysctl_softlockup_all_cpu_backtrace
;
73 extern int proc_watchdog(struct ctl_table
*, int ,
74 void __user
*, size_t *, loff_t
*);
75 extern int proc_nmi_watchdog(struct ctl_table
*, int ,
76 void __user
*, size_t *, loff_t
*);
77 extern int proc_soft_watchdog(struct ctl_table
*, int ,
78 void __user
*, size_t *, loff_t
*);
79 extern int proc_watchdog_thresh(struct ctl_table
*, int ,
80 void __user
*, size_t *, loff_t
*);
81 extern int proc_watchdog_cpumask(struct ctl_table
*, int,
82 void __user
*, size_t *, loff_t
*);
85 #ifdef CONFIG_HAVE_ACPI_APEI_NMI