On Fri, May 24, 2024 at 05:13:56PM +0200, Andrea Parri wrote: > tools/memory-model/ and herdtool7 are closely linked: the latter is > responsible for (pre)processing each C-like macro of a litmus test, > and for providing the LKMM with a set of events, or "representation", > corresponding to the given macro. Provide herd-representation.txt > to document the representation of synchronization macros, following > their "classification" in Documentation/atomic_t.txt. > > Suggested-by: Hernan Ponce de Leon <hernan.poncedeleon@xxxxxxxxxxxxxxx> > Signed-off-by: Andrea Parri <parri.andrea@xxxxxxxxx> > --- > + | rcu_dereference | R[once] | > + | rcu_assign_pointer | W[release] | > + | srcu_read_lock | R[srcu-lock] | > + | srcu_read_unlock | W[srcu-unlock] | > + | synchronize_srcu | SRCU[sync-srcu] | > + --------------------------------------------------------------------------- > + | RMW ops w/o return value | | > + --------------------------------------------------------------------------- > + | atomic_add | R*[noreturn] ->rmw W*[once] | What's the difference between R and R*, or between W and W*? Alan
