3 files changed, 6 insertions, 1 deletions

diff --git a/arch/x86/kernel/nmi_32.c b/arch/x86/kernel/nmi_32.c
index c7227e2180f8..95d3fc203cf7 100644
--- a/arch/x86/kernel/nmi_32.c
+++ b/arch/x86/kernel/nmi_32.c
@@ -353,7 +353,8 @@ __kprobes int nmi_watchdog_tick(struct pt_regs * regs, unsigned reason)
          * Take the local apic timer and PIT/HPET into account. We don't
          * know which one is active, when we have highres/dyntick on
          */
-        sum = per_cpu(irq_stat, cpu).apic_timer_irqs + kstat_cpu(cpu).irqs[0];
+        sum = per_cpu(irq_stat, cpu).apic_timer_irqs +
+                per_cpu(irq_stat, cpu).irq0_irqs;
 
         /* if the none of the timers isn't firing, this cpu isn't doing much */
         if (!touched && last_irq_sums[cpu] == sum) {
diff --git a/arch/x86/kernel/time_32.c b/arch/x86/kernel/time_32.c
index 19a6c678d02e..56dadfc2f41c 100644
--- a/arch/x86/kernel/time_32.c
+++ b/arch/x86/kernel/time_32.c
@@ -157,6 +157,9 @@ EXPORT_SYMBOL(profile_pc);
  */
 irqreturn_t timer_interrupt(int irq, void *dev_id)
 {
+        /* Keep nmi watchdog up to date */
+        per_cpu(irq_stat, smp_processor_id()).irq0_irqs++;
+
 #ifdef CONFIG_X86_IO_APIC
         if (timer_ack) {
                 /*
diff --git a/include/asm-x86/hardirq_32.h b/include/asm-x86/hardirq_32.h
index 0e358dc405f8..34649585bb59 100644
--- a/include/asm-x86/hardirq_32.h
+++ b/include/asm-x86/hardirq_32.h
@@ -9,6 +9,7 @@ typedef struct {
         unsigned long idle_timestamp;
         unsigned int __nmi_count;       /* arch dependent */
         unsigned int apic_timer_irqs;   /* arch dependent */
+        unsigned int irq0_irqs;
 } ____cacheline_aligned irq_cpustat_t;
 
 DECLARE_PER_CPU(irq_cpustat_t, irq_stat);