I have yet to digest the rest of the discussion, however:
On Fri, Jun 22, 2018 at 02:09:04PM -0400, Alan Stern wrote: > The LKMM uses the same CAT code for acquire/release and lock/unlock. > (In essence, it considers a lock to be an acquire and an unlock to be a > release; everything else follows from that.) Treating one differently > from the other in these tests would require some significant changes. > It wouldn't be easy. That is problematic, acquire+release are very much simpler operations than lock+unlock. At the very least, lock includes a control-dependency, where acquire does not.
