2005-04-17 06:20:36 +08:00
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/*
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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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2006-09-29 16:59:03 +08:00
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#include <linux/sched.h>
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2005-04-17 06:20:36 +08:00
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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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2012-03-24 06:01:51 +08:00
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#if defined(CONFIG_HAVE_NMI_WATCHDOG) || defined(CONFIG_HARDLOCKUP_DETECTOR)
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2006-12-07 09:14:01 +08:00
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#include <asm/nmi.h>
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2010-11-30 06:07:16 +08:00
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extern void touch_nmi_watchdog(void);
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#else
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2007-02-13 20:26:24 +08:00
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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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2010-11-30 06:07:16 +08:00
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#endif
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2005-04-17 06:20:36 +08:00
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2014-10-14 06:55:35 +08:00
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#if defined(CONFIG_HARDLOCKUP_DETECTOR)
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2015-04-15 06:44:19 +08:00
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extern void hardlockup_detector_disable(void);
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2014-10-14 06:55:35 +08:00
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#else
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2015-04-15 06:44:19 +08:00
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static inline void hardlockup_detector_disable(void)
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2014-10-14 06:55:35 +08:00
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{
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}
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#endif
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2009-08-03 15:31:54 +08:00
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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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2014-06-24 04:22:05 +08:00
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arch_trigger_all_cpu_backtrace(true);
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2009-08-03 15:31:54 +08:00
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return true;
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}
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2014-06-24 04:22:05 +08:00
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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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2009-08-03 15:31:54 +08:00
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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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2014-06-24 04:22:05 +08:00
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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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2006-12-07 09:14:01 +08:00
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#endif
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2010-05-08 05:11:44 +08:00
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#ifdef CONFIG_LOCKUP_DETECTOR
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2010-02-06 10:47:05 +08:00
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int hw_nmi_is_cpu_stuck(struct pt_regs *);
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2011-05-23 13:10:23 +08:00
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u64 hw_nmi_get_sample_period(int watchdog_thresh);
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2015-04-15 06:43:55 +08:00
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extern int nmi_watchdog_enabled;
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extern int soft_watchdog_enabled;
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2013-05-20 02:45:15 +08:00
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extern int watchdog_user_enabled;
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2011-05-23 13:10:22 +08:00
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extern int watchdog_thresh;
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2014-06-24 04:22:05 +08:00
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extern int sysctl_softlockup_all_cpu_backtrace;
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2010-02-13 06:19:19 +08:00
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struct ctl_table;
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2015-04-15 06:44:08 +08:00
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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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2010-02-06 10:47:05 +08:00
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#endif
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2014-07-22 17:20:12 +08:00
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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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2005-04-17 06:20:36 +08:00
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#endif
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