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- ============
- LITMUS TESTS
- ============
- Each subdirectory contains litmus tests that are typical to describe the
- semantics of respective kernel 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.
- atomic (/atomic derectory)
- --------------------------
- Atomic-RMW+mb__after_atomic-is-stronger-than-acquire.litmus
- Test that an atomic RMW followed by a smp_mb__after_atomic() is
- stronger than a normal acquire: both the read and write parts of
- the RMW are ordered before the subsequential memory accesses.
- Atomic-RMW-ops-are-atomic-WRT-atomic_set.litmus
- Test that atomic_set() cannot break the atomicity of atomic RMWs.
- NOTE: Require herd7 7.56 or later which supports "(void)expr".
- RCU (/rcu directory)
- --------------------
- MP+onceassign+derefonce.litmus (under tools/memory-model/litmus-tests/)
- Demonstrates the use of rcu_assign_pointer() and rcu_dereference() to
- ensure that an RCU reader will not see pre-initialization garbage.
- RCU+sync+read.litmus
- RCU+sync+free.litmus
- Both the above litmus tests demonstrate the RCU grace period guarantee
- that an RCU read-side critical section can never span a grace period.
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