diff --git a/[refs] b/[refs]
index 0f654de8ac32..4d8297acec00 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 3cbed429a9ccdb7a243f733b1056fe5c39e9004c
+refs/heads/master: 4eb96fcfe07b7f2a05577e57533840f8e26bea53
diff --git a/trunk/kernel/perf_counter.c b/trunk/kernel/perf_counter.c
index 9ad11e44d9ab..4c0dccb756ad 100644
--- a/trunk/kernel/perf_counter.c
+++ b/trunk/kernel/perf_counter.c
@@ -54,6 +54,8 @@ int __weak hw_perf_group_sched_in(struct perf_counter *group_leader,
 	return 0;
 }
 
+void __weak perf_counter_print_debug(void)	{ }
+
 static void
 list_add_counter(struct perf_counter *counter, struct perf_counter_context *ctx)
 {