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| author | Paul E. McKenney <paulmck@kernel.org> | 2021-04-16 16:53:16 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2021-05-10 16:22:54 -0700 |
| commit | 3d3a0d1b508dcc47e82b0e12cde6585bc088b0cc (patch) | |
| tree | c186d317780c59edad911127324db8d506112842 /kernel/rcu/srcutree.c | |
| parent | 2f20de99a63b0de9bcceedafc3281e65fbf7d4fd (diff) | |
rcu: Point to documentation of ordering guarantees
Add comments to synchronize_rcu() and friends that point to
Documentation/RCU/Design/Memory-Ordering/Tree-RCU-Memory-Ordering.rst.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu/srcutree.c')
| -rw-r--r-- | kernel/rcu/srcutree.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/rcu/srcutree.c b/kernel/rcu/srcutree.c index e26547b34ad3..f8340c3b1c00 100644 --- a/kernel/rcu/srcutree.c +++ b/kernel/rcu/srcutree.c @@ -1000,6 +1000,9 @@ EXPORT_SYMBOL_GPL(synchronize_srcu_expedited); * synchronize_srcu(), srcu_read_lock(), and srcu_read_unlock() are * passed the same srcu_struct structure. * + * Implementation of these memory-ordering guarantees is similar to + * that of synchronize_rcu(). + * * If SRCU is likely idle, expedite the first request. This semantic * was provided by Classic SRCU, and is relied upon by its users, so TREE * SRCU must also provide it. Note that detecting idleness is heuristic |