teach helgrind about simple_mtx
It is annoying to force simple_mtx fallback to mtx to run helgrind. But it looks like we can teach helgrind about this, in a similar way to how we teach valgrind about GEM bo's
It is annoying to force simple_mtx fallback to mtx to run helgrind. But it looks like we can teach helgrind about this, in a similar way to how we teach valgrind about GEM bo's