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    SubjectRe: [PATCH v3 3/5] Documentation/locking/atomic: Introduce atomic-tests directory
    On Thu, 27 Feb 2020, Boqun Feng wrote:

    > Although we have atomic_t.txt and its friends to describe the semantics
    > of atomic APIs and lib/atomic64_test.c for build testing and testing in
    > UP mode, the tests for our atomic APIs in real SMP mode are still
    > missing. Since now we have the LKMM tool in kernel and litmus tests can
    > be used to generate kernel modules for testing purpose with "klitmus" (a
    > tool from the LKMM toolset), it makes sense to put a few typical litmus
    > tests into kernel so that
    >
    > 1) they are the examples to describe the conceptual mode of the
    > semantics of atomic APIs, and
    >
    > 2) they can be used to generate kernel test modules for anyone
    > who is interested to test the atomic APIs implementation (in
    > most cases, is the one who implements the APIs for a new arch)
    >
    > Therefore, introduce the atomic-tests directory for this purpose. The
    > directory is maintained by the LKMM group to make sure the litmus tests
    > are always aligned with our memory model.
    >
    > Signed-off-by: Boqun Feng <boqun.feng@gmail.com>

    Acked-by: Alan Stern <stern@rowland.harvard.edu>

    > ---
    > Documentation/atomic-tests/README | 4 ++++
    > MAINTAINERS | 1 +
    > 2 files changed, 5 insertions(+)
    > create mode 100644 Documentation/atomic-tests/README
    >
    > diff --git a/Documentation/atomic-tests/README b/Documentation/atomic-tests/README
    > new file mode 100644
    > index 000000000000..ae61201a4271
    > --- /dev/null
    > +++ b/Documentation/atomic-tests/README
    > @@ -0,0 +1,4 @@
    > +This directory contains litmus tests that are typical to describe the semantics
    > +of our atomic APIs. For more information about how to "run" a litmus test or
    > +how to generate a kernel test module based on a litmus test, please see
    > +tools/memory-model/README.
    > diff --git a/MAINTAINERS b/MAINTAINERS
    > index ffc7d5712735..ebca5f6263bb 100644
    > --- a/MAINTAINERS
    > +++ b/MAINTAINERS
    > @@ -9718,6 +9718,7 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev
    > F: tools/memory-model/
    > F: Documentation/atomic_bitops.txt
    > F: Documentation/atomic_t.txt
    > +F: Documentation/atomic-tests/
    > F: Documentation/core-api/atomic_ops.rst
    > F: Documentation/core-api/refcount-vs-atomic.rst
    > F: Documentation/memory-barriers.txt
    >

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