diff --git a/[refs] b/[refs]
index b149cbc56a5e..abdab2abe7e7 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: eef6cbf5844c620d9db9be99e4908cdf92492fb9
+refs/heads/master: 78b6084c907cea15bb40a564b974e072f5163781
diff --git a/trunk/include/linux/init_task.h b/trunk/include/linux/init_task.h
index 54fa2fa2c8e4..467cff545c30 100644
--- a/trunk/include/linux/init_task.h
+++ b/trunk/include/linux/init_task.h
@@ -116,7 +116,9 @@ extern struct group_info init_groups;
 #ifdef CONFIG_PERF_COUNTERS
 # define INIT_PERF_COUNTERS(tsk)					\
 	.perf_counter_ctx.counter_list =				\
-		LIST_HEAD_INIT(tsk.perf_counter_ctx.counter_list),
+		LIST_HEAD_INIT(tsk.perf_counter_ctx.counter_list),	\
+	.perf_counter_ctx.lock =					\
+		__SPIN_LOCK_UNLOCKED(tsk.perf_counter_ctx.lock),
 #else
 # define INIT_PERF_COUNTERS(tsk)
 #endif