LXR linux/include/linux/nmi.h

   1/*
   2 *  linux/include/linux/nmi.h
   3 */
   4#ifndef LINUX_NMI_H
   5#define LINUX_NMI_H
   6
   7#include <linux/sched.h>
   8#include <asm/irq.h>
   9
  10/**
  11 * touch_nmi_watchdog - restart NMI watchdog timeout.
  12 * 
  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.
  16 */
  17#ifdef ARCH_HAS_NMI_WATCHDOG
  18#include <asm/nmi.h>
  19extern void touch_nmi_watchdog(void);
  20extern void acpi_nmi_disable(void);
  21extern void acpi_nmi_enable(void);
  22#else
  23static inline void touch_nmi_watchdog(void)
  24{
  25        touch_softlockup_watchdog();
  26}
  27static inline void acpi_nmi_disable(void) { }
  28static inline void acpi_nmi_enable(void) { }
  29#endif
  30
  31/*
  32 * Create trigger_all_cpu_backtrace() out of the arch-provided
  33 * base function. Return whether such support was available,
  34 * to allow calling code to fall back to some other mechanism:
  35 */
  36#ifdef arch_trigger_all_cpu_backtrace
  37static inline bool trigger_all_cpu_backtrace(void)
  38{
  39        arch_trigger_all_cpu_backtrace();
  40
  41        return true;
  42}
  43#else
  44static inline bool trigger_all_cpu_backtrace(void)
  45{
  46        return false;
  47}
  48#endif
  49
  50#endif
  51