diff --git a/kernel/events/core.c b/kernel/events/core.c
index cbbfc9699763..4b544ca00726 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -4006,8 +4006,8 @@ int perf_event_read_local(struct perf_event *event, u64 *value,
 {
 	unsigned long flags;
 	int ret = 0;
-	int local_cpu = smp_processor_id();
-	bool readable = cpumask_test_cpu(local_cpu, &event->readable_on_cpus);
+	int local_cpu;
+	bool readable;
 	/*
 	 * Disabling interrupts avoids all counter scheduling (context
 	 * switches, timer based rotation and IPIs).
@@ -4031,6 +4031,8 @@ int perf_event_read_local(struct perf_event *event, u64 *value,
 	}
 
 	/* If this is a per-CPU event, it must be for this CPU */
+	local_cpu = raw_smp_processor_id();
+	readable = cpumask_test_cpu(local_cpu, &event->readable_on_cpus);
 	if (!(event->attach_state & PERF_ATTACH_TASK) &&
 	    event->cpu != local_cpu &&
 	    !readable) {