#ifdef CONFIG_HARDLOCKUP_DETECTOR
void touch_nmi_watchdog(void)
{
- if (watchdog_user_enabled) {
- unsigned cpu;
-
- for_each_present_cpu(cpu) {
- if (per_cpu(watchdog_nmi_touch, cpu) != true)
- per_cpu(watchdog_nmi_touch, cpu) = true;
- }
- }
+ /*
+ * Using __raw here because some code paths have
+ * preemption enabled. If preemption is enabled
+ * then interrupts should be enabled too, in which
+ * case we shouldn't have to worry about the watchdog
+ * going off.
+ */
+ __raw_get_cpu_var(watchdog_nmi_touch) = true;
touch_softlockup_watchdog();
}
EXPORT_SYMBOL(touch_nmi_watchdog);
static void update_timers(int cpu)
{
- struct call_single_data data = {.func = restart_watchdog_hrtimer};
/*
* Make sure that perf event counter will adopt to a new
* sampling period. Updating the sampling period directly would
* might be late already so we have to restart the timer as well.
*/
watchdog_nmi_disable(cpu);
- __smp_call_function_single(cpu, &data, 1);
+ smp_call_function_single(cpu, restart_watchdog_hrtimer, NULL, 1);
watchdog_nmi_enable(cpu);
}