diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 8eabfbb8003e33d0b06a5e5e331feeddcf90fe40..7f0e7fa6d62cf7c9d1f04cd818968f0454e2707a 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -648,6 +648,7 @@ static struct {
 	{ trace_clock_global,	"global",	1 },
 	{ trace_clock_counter,	"counter",	0 },
 	{ trace_clock_jiffies,	"uptime",	1 },
+	{ trace_clock,		"perf",		1 },
 	ARCH_TRACE_CLOCKS
 };