040000 tree bb0d9c3f133fc5f64d229aa8c535a8bdab367efd	Data-Structures
040000 tree c1a09446a80e9e057fd985509f8271e983c25f62	Expedited-Grace-Periods
040000 tree 735aa718840bd862420f2b85bd7c26c59ec29abd	Memory-Ordering
040000 tree 9bcdd392dc8e60eb35676bd2921e1d90aff12110	Requirements