Commit 1c1c1d98 authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

doc: Use rcu_barrier() to rate-limit RCU callbacks 



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: default avatarPaul E. McKenney <paulmck@kernel.org>
parent ed336c6f

Documentation/RCU/checklist.rst

+2 −1
Original line number Diff line number Diff line
@@ -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().