perf_counters: account NMI interrupts

I noticed that kerneltop interrupts were accounted as NMI, but not their
perf counter origin.

Account NMI performance counter interrupts.

Signed-off-by: Mike Galbraith  <efault@gmx.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
 arch/x86/kernel/cpu/perf_counter.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/cpu/perf_counter.c b/arch/x86/kernel/cpu/perf_counter.c
index 8bb2133..9901e46 100644 (file)
--- a/arch/x86/kernel/cpu/perf_counter.c
+++ b/arch/x86/kernel/cpu/perf_counter.c
@@ -495,6 +495,7 @@ static void __smp_perf_counter_interrupt(struct pt_regs *regs, int nmi)
                goto out;
 
 again:
+       inc_irq_stat(apic_perf_irqs);
        ack = status;
        for_each_bit(bit, (unsigned long *)&status, X86_PMC_IDX_MAX) {
                struct perf_counter *counter = cpuc->counters[bit];
@@ -570,7 +571,6 @@ void perf_counter_unthrottle(void)
 void smp_perf_counter_interrupt(struct pt_regs *regs)
 {
        irq_enter();
-       inc_irq_stat(apic_perf_irqs);
        apic_write(APIC_LVTPC, LOCAL_PERF_VECTOR);
        __smp_perf_counter_interrupt(regs, 0);