| Message ID | 20220831180625.2692892-3-paulmck@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | RCU documentation updates for v6.1 | expand |
diff --git a/Documentation/RCU/checklist.rst b/Documentation/RCU/checklist.rst index 2db206fc3465f..178ca7547b987 100644 --- a/Documentation/RCU/checklist.rst +++ b/Documentation/RCU/checklist.rst @@ -305,7 +305,8 @@ over a rather long period of time, but improvements are always welcome! the machine. d. Periodically invoke synchronize_rcu(), permitting a limited - number of updates per grace period. + number of updates per grace period. Better yet, periodically + invoke rcu_barrier() to wait for all outstanding callbacks. The same cautions apply to call_srcu() and kfree_rcu().
The checklist.rst document advises periodic synchronize_rcu() invocations to prevent callback flooding. However, rcu_barrier() is often a better choice. This commit therefore adds words to this effect. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> --- Documentation/RCU/checklist.rst | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)