i386: Do not include other cpus' interrupt 0 in nmi_watchdog

kstat_irqs(0) includes the count of interrupt 0 from all cpus, not just
the current cpu.  The updated interrupt 0 on other cpus can stop the
nmi_watchdog from tripping, so only include the current cpu's int 0.

Signed-off-by: Keith Owens <[email protected]>
Signed-off-by: Andi Kleen <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/arch/i386/kernel/nmi.c b/arch/i386/kernel/nmi.c
index 03b7f5584d713b60216c25d5ad73df7dbf363e39..99beac7f96ceb4df737c9c02c304ba9d9999710f 100644 (file)
--- a/arch/i386/kernel/nmi.c
+++ b/arch/i386/kernel/nmi.c
@@ -353,7 +353,7 @@ __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_irqs(0);
+       sum = per_cpu(irq_stat, cpu).apic_timer_irqs + kstat_cpu(cpu).irqs[0];
 
        /* if the none of the timers isn't firing, this cpu isn't doing much */
        if (!touched && last_irq_sums[cpu] == sum) {