diff options
Diffstat (limited to 'include/linux/nmi.h')
-rw-r--r-- | include/linux/nmi.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/include/linux/nmi.h b/include/linux/nmi.h new file mode 100644 index 00000000..db50840e --- /dev/null +++ b/include/linux/nmi.h @@ -0,0 +1,56 @@ +/* + * linux/include/linux/nmi.h + */ +#ifndef LINUX_NMI_H +#define LINUX_NMI_H + +#include <linux/sched.h> +#include <asm/irq.h> + +/** + * touch_nmi_watchdog - restart NMI watchdog timeout. + * + * If the architecture supports the NMI watchdog, touch_nmi_watchdog() + * may be used to reset the timeout - for code which intentionally + * disables interrupts for a long time. This call is stateless. + */ +#if defined(CONFIG_HAVE_NMI_WATCHDOG) || defined(CONFIG_HARDLOCKUP_DETECTOR) +#include <asm/nmi.h> +extern void touch_nmi_watchdog(void); +#else +static inline void touch_nmi_watchdog(void) +{ + touch_softlockup_watchdog(); +} +#endif + +/* + * Create trigger_all_cpu_backtrace() out of the arch-provided + * base function. Return whether such support was available, + * to allow calling code to fall back to some other mechanism: + */ +#ifdef arch_trigger_all_cpu_backtrace +static inline bool trigger_all_cpu_backtrace(void) +{ + arch_trigger_all_cpu_backtrace(); + + return true; +} +#else +static inline bool trigger_all_cpu_backtrace(void) +{ + return false; +} +#endif + +#ifdef CONFIG_LOCKUP_DETECTOR +int hw_nmi_is_cpu_stuck(struct pt_regs *); +u64 hw_nmi_get_sample_period(int watchdog_thresh); +extern int watchdog_enabled; +extern int watchdog_thresh; +struct ctl_table; +extern int proc_dowatchdog(struct ctl_table *, int , + void __user *, size_t *, loff_t *); +#endif + +#endif |