diff options
| author | Paul E. McKenney <paulmck@kernel.org> | 2023-01-29 09:41:44 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2023-03-22 12:02:21 -0700 |
| commit | 02bae7a24257947fe95fcca80c78e6cb602e94bf (patch) | |
| tree | 2c8cade39b72d52e748157c284c7b47174879058 /tools/memory-model/linux-kernel.cat | |
| parent | dd409de256333899b2632c769dc798b7db537397 (diff) | |
tools/memory-model: Add smp_mb__after_srcu_read_unlock()
This commit adds support for smp_mb__after_srcu_read_unlock(), which,
when combined with a prior srcu_read_unlock(), implies a full memory
barrier. No ordering is guaranteed to accesses between the two, and
placing accesses between is bad practice in any case.
Tests may be found at https://github.com/paulmckrcu/litmus in files
matching manual/kernel/C-srcu-mb-*.litmus.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'tools/memory-model/linux-kernel.cat')
| -rw-r--r-- | tools/memory-model/linux-kernel.cat | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/memory-model/linux-kernel.cat b/tools/memory-model/linux-kernel.cat index 6e531457bb73..3a4d3b49e85c 100644 --- a/tools/memory-model/linux-kernel.cat +++ b/tools/memory-model/linux-kernel.cat @@ -49,7 +49,8 @@ let mb = ([M] ; fencerel(Mb) ; [M]) | * also affected by the fence. *) ([M] ; po-unlock-lock-po ; - [After-unlock-lock] ; po ; [M]) + [After-unlock-lock] ; po ; [M]) | + ([M] ; po? ; [Srcu-unlock] ; fencerel(After-srcu-read-unlock) ; [M]) let gp = po ; [Sync-rcu | Sync-srcu] ; po? let strong-fence = mb | gp |