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| author | Paul E. McKenney <paulmck@kernel.org> | 2023-01-29 20:41:44 +0300 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2023-03-22 22:02:21 +0300 |
| commit | 02bae7a24257947fe95fcca80c78e6cb602e94bf (patch) | |
| tree | 2c8cade39b72d52e748157c284c7b47174879058 /tools/memory-model/linux-kernel.def | |
| parent | dd409de256333899b2632c769dc798b7db537397 (diff) | |
| download | linux-02bae7a24257947fe95fcca80c78e6cb602e94bf.tar.xz | |
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.def')
| -rw-r--r-- | tools/memory-model/linux-kernel.def | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/memory-model/linux-kernel.def b/tools/memory-model/linux-kernel.def index ef0f3c1850de..a6b6fbc9d0b2 100644 --- a/tools/memory-model/linux-kernel.def +++ b/tools/memory-model/linux-kernel.def @@ -24,6 +24,7 @@ smp_mb__before_atomic() { __fence{before-atomic}; } smp_mb__after_atomic() { __fence{after-atomic}; } smp_mb__after_spinlock() { __fence{after-spinlock}; } smp_mb__after_unlock_lock() { __fence{after-unlock-lock}; } +smp_mb__after_srcu_read_unlock() { __fence{after-srcu-read-unlock}; } barrier() { __fence{barrier}; } // Exchange |