diff --git a/arch/powerpc/kernel/perf_event.c b/arch/powerpc/kernel/perf_event.c
index fbe101d..08460a2 100644
--- a/arch/powerpc/kernel/perf_event.c
+++ b/arch/powerpc/kernel/perf_event.c
@@ -1298,7 +1298,7 @@
 }
 
 static int __cpuinit
-power_pmu_notify(struct notifier_block *self, unsigned long action, void *hcpu)
+power_pmu_notifier(struct notifier_block *self, unsigned long action, void *hcpu)
 {
 	unsigned int cpu = (long)hcpu;
 
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 70cffd0..9547703 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -453,6 +453,7 @@
 #include <linux/pid_namespace.h>
 #include <linux/workqueue.h>
 #include <linux/ftrace.h>
+#include <linux/cpu.h>
 #include <asm/atomic.h>
 
 #define PERF_MAX_STACK_DEPTH		255