diff --git a/arch/x86/kernel/cpu/perf_event_msr.c b/arch/x86/kernel/cpu/perf_event_msr.c
index b0dd2e8a6d12f23b5f158c0cddf7e166a1a46c22..086b12eae79493329c8792538ea8c6f179aee4fb 100644
--- a/arch/x86/kernel/cpu/perf_event_msr.c
+++ b/arch/x86/kernel/cpu/perf_event_msr.c
@@ -145,7 +145,7 @@ static inline u64 msr_read_counter(struct perf_event *event)
 	if (event->hw.event_base)
 		rdmsrl(event->hw.event_base, now);
 	else
-		now = rdtsc();
+		rdtscll(now);
 
 	return now;
 }