A recent discussion raises up the requirement for having test cases for atomic APIs: https://lore.kernel.org/lkml/20200213085849.GL14897@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/ , and since we already have a way to generate a test module from a litmus test with klitmus[1]. It makes sense that we add more litmus tests for atomic APIs into memory-model. So I begin to do this and the plan is to add the litmus tests we already use in atomic_t.txt, ones from Paul's litmus collection[2], and any other valuable litmus test we come up while adding the previous two kinds of tests. This patchset finishes the first part (adding atomic_t.txt litmus tests). I also improve the atomic_t.txt to make it consistent with the litmus tests. One thing to note is patch #2 requires a modification to herd and I just made a PR to Luc's repo: https://github.com/herd/herdtools7/pull/28 , so if this patchset looks good to everyone and someone plans to take it (and I assume is Paul), please wait until that PR is settled. And probably we need to bump the required herd version because of it. Comments and suggesions are welcome! Regards, Boqun [1]: http://diy.inria.fr/doc/litmus.html#klitmus [2]: https://github.com/paulmckrcu/litmus/tree/master/manual/atomic *** BLURB HERE *** Boqun Feng (3): Documentation/locking/atomic: Fix atomic-set litmus test tools/memory-model: Add a litmus test for atomic_set() tools/memory-model: Add litmus test for RMW + smp_mb__after_atomic() Documentation/atomic_t.txt | 14 ++++----- ...+mb__after_atomic-is-strong-acquire.litmus | 29 +++++++++++++++++++ .../Atomic-set-observable-to-RMW.litmus | 24 +++++++++++++++ tools/memory-model/litmus-tests/README | 8 +++++ 4 files changed, 68 insertions(+), 7 deletions(-) create mode 100644 tools/memory-model/litmus-tests/Atomic-RMW+mb__after_atomic-is-strong-acquire.litmus create mode 100644 tools/memory-model/litmus-tests/Atomic-set-observable-to-RMW.litmus -- 2.25.0
