trace2:gvfs:experiment: add region around unpack_trees()

Signed-off-by: Jeff Hostetler <[email protected]>

Author: jeffhostetler

unpack-trees.c

@@ -1478,6 +1478,8 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
 	if (len > MAX_UNPACK_TREES)
 		die("unpack_trees takes at most %d trees", MAX_UNPACK_TREES);
 
+	trace2_region_enter("exp", "unpack_trees", NULL);
+
 	trace_performance_enter();
 	memset(&el, 0, sizeof(el));
 	if (!core_apply_sparse_checkout || !o->update)
@@ -1658,6 +1660,7 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
 done:
 	trace_performance_leave("unpack_trees");
 	clear_exclude_list(&el);
+	trace2_region_leave("exp", "unpack_trees", NULL);
 	return ret;
 
 return_failed: