arm: perf: Use FIQ to handle PMU events.dev/perf_nmi_fiq

Using FIQ (if it is available) gives perf a better insight into the
system by allowing code run with interrupts disabled to be profiled.

Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/arm/include/asm/pmu.h b/arch/arm/include/asm/pmu.h
index b1596bd59129..e6c87e393547 100644
--- a/arch/arm/include/asm/pmu.h
+++ b/arch/arm/include/asm/pmu.h
@@ -123,6 +123,8 @@ struct arm_pmu {
 
 extern const struct dev_pm_ops armpmu_dev_pm_ops;
 
+irqreturn_t armpmu_dispatch_irq(int irq, void *dev);
+
 int armpmu_register(struct arm_pmu *armpmu, int type);
 
 u64 armpmu_event_update(struct perf_event *event);