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108 lines
2.8 KiB
108 lines
2.8 KiB
/* |
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* linux/include/linux/nmi.h |
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*/ |
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#ifndef LINUX_NMI_H |
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#define LINUX_NMI_H |
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#include <linux/sched.h> |
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#include <asm/irq.h> |
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/** |
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* touch_nmi_watchdog - restart NMI watchdog timeout. |
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* |
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* If the architecture supports the NMI watchdog, touch_nmi_watchdog() |
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* may be used to reset the timeout - for code which intentionally |
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* disables interrupts for a long time. This call is stateless. |
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*/ |
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#if defined(CONFIG_HAVE_NMI_WATCHDOG) || defined(CONFIG_HARDLOCKUP_DETECTOR_NMI) |
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#include <asm/nmi.h> |
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#endif |
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#if defined(CONFIG_HAVE_NMI_WATCHDOG) || defined(CONFIG_HARDLOCKUP_DETECTOR) |
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extern void touch_nmi_watchdog(void); |
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#else |
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static inline void touch_nmi_watchdog(void) |
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{ |
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touch_softlockup_watchdog(); |
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} |
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#endif |
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#if defined(CONFIG_HARDLOCKUP_DETECTOR) |
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extern void hardlockup_detector_disable(void); |
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#else |
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static inline void hardlockup_detector_disable(void) {} |
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#endif |
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/* |
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* Create trigger_all_cpu_backtrace() out of the arch-provided |
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* base function. Return whether such support was available, |
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* to allow calling code to fall back to some other mechanism: |
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*/ |
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#ifdef arch_trigger_all_cpu_backtrace |
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static inline bool trigger_all_cpu_backtrace(void) |
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{ |
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arch_trigger_all_cpu_backtrace(true); |
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return true; |
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} |
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static inline bool trigger_allbutself_cpu_backtrace(void) |
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{ |
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arch_trigger_all_cpu_backtrace(false); |
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return true; |
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} |
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/* generic implementation */ |
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void nmi_trigger_all_cpu_backtrace(bool include_self, |
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void (*raise)(cpumask_t *mask)); |
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bool nmi_cpu_backtrace(struct pt_regs *regs); |
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#else |
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static inline bool trigger_all_cpu_backtrace(void) |
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{ |
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return false; |
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} |
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static inline bool trigger_allbutself_cpu_backtrace(void) |
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{ |
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return false; |
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} |
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#endif |
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#ifdef CONFIG_LOCKUP_DETECTOR |
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int hw_nmi_is_cpu_stuck(struct pt_regs *); |
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u64 hw_nmi_get_sample_period(int watchdog_thresh); |
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extern int nmi_watchdog_enabled; |
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extern int soft_watchdog_enabled; |
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extern int watchdog_user_enabled; |
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extern int watchdog_thresh; |
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extern unsigned long *watchdog_cpumask_bits; |
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extern int sysctl_softlockup_all_cpu_backtrace; |
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extern int sysctl_hardlockup_all_cpu_backtrace; |
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struct ctl_table; |
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extern int proc_watchdog(struct ctl_table *, int , |
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void __user *, size_t *, loff_t *); |
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extern int proc_nmi_watchdog(struct ctl_table *, int , |
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void __user *, size_t *, loff_t *); |
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extern int proc_soft_watchdog(struct ctl_table *, int , |
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void __user *, size_t *, loff_t *); |
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extern int proc_watchdog_thresh(struct ctl_table *, int , |
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void __user *, size_t *, loff_t *); |
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extern int proc_watchdog_cpumask(struct ctl_table *, int, |
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void __user *, size_t *, loff_t *); |
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extern int lockup_detector_suspend(void); |
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extern void lockup_detector_resume(void); |
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#else |
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static inline int lockup_detector_suspend(void) |
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{ |
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return 0; |
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} |
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static inline void lockup_detector_resume(void) |
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{ |
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} |
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#endif |
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#ifdef CONFIG_HAVE_ACPI_APEI_NMI |
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#include <asm/nmi.h> |
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#endif |
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#endif
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