diff --git a/[refs] b/[refs]
index 92fe58a2666a..4a134e7d2bd6 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f03f5979945c573801c25ba3089ef17c4d7edc61
+refs/heads/master: c00b060f36e1238816ebcf2c8cccd5e9fa068980
diff --git a/trunk/kernel/trace/trace_events_filter.c b/trunk/kernel/trace/trace_events_filter.c
index 5b889d43d856..ebbb2611982e 100644
--- a/trunk/kernel/trace/trace_events_filter.c
+++ b/trunk/kernel/trace/trace_events_filter.c
@@ -1418,43 +1418,24 @@ static int check_pred_tree(struct event_filter *filter,
 			      check_pred_tree_cb, &data);
 }
 
-static int count_leafs(struct filter_pred *preds, struct filter_pred *root)
+static int count_leafs_cb(enum move_type move, struct filter_pred *pred,
+			  int *err, void *data)
 {
-	struct filter_pred *pred;
-	enum move_type move = MOVE_DOWN;
-	int count = 0;
-	int done = 0;
+	int *count = data;
 
-	pred = root;
+	if ((move == MOVE_DOWN) &&
+	    (pred->left == FILTER_PRED_INVALID))
+		(*count)++;
 
-	do {
-		switch (move) {
-		case MOVE_DOWN:
-			if (pred->left != FILTER_PRED_INVALID) {
-				pred = &preds[pred->left];
-				continue;
-			}
-			/* A leaf at the root is just a leaf in the tree */
-			if (pred == root)
-				return 1;
-			count++;
-			pred = get_pred_parent(pred, preds,
-					       pred->parent, &move);
-			continue;
-		case MOVE_UP_FROM_LEFT:
-			pred = &preds[pred->right];
-			move = MOVE_DOWN;
-			continue;
-		case MOVE_UP_FROM_RIGHT:
-			if (pred == root)
-				break;
-			pred = get_pred_parent(pred, preds,
-					       pred->parent, &move);
-			continue;
-		}
-		done = 1;
-	} while (!done);
+	return WALK_PRED_DEFAULT;
+}
+
+static int count_leafs(struct filter_pred *preds, struct filter_pred *root)
+{
+	int count = 0, ret;
 
+	ret = walk_pred_tree(preds, root, count_leafs_cb, &count);
+	WARN_ON(ret);
 	return count;
 }