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[06/15] doc: Update rcu.rst

Message ID 20230105000955.1767218-6-paulmck@kernel.org (mailing list archive)
State Accepted
Commit 647dd4cd7c2137194811d8585a7500dab3d328c0
Headers show
Series Documentation updates for v6.3 | expand

Commit Message

Paul E. McKenney Jan. 5, 2023, 12:09 a.m. UTC 
This commit provides a couple of updates based on the inexorable passage
of time.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
 Documentation/RCU/rcu.rst | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/Documentation/RCU/rcu.rst b/Documentation/RCU/rcu.rst
index 3cfe01ba9a494..381cb86f657d8 100644
--- a/Documentation/RCU/rcu.rst
+++ b/Documentation/RCU/rcu.rst
@@ -77,12 +77,13 @@  Frequently Asked Questions
   search for the string "Patent" in Documentation/RCU/RTFP.txt to find them.
   Of these, one was allowed to lapse by the assignee, and the
   others have been contributed to the Linux kernel under GPL.
+  Many (but not all) have long since expired.
   There are now also LGPL implementations of user-level RCU
   available (https://liburcu.org/).
 
 - I hear that RCU needs work in order to support realtime kernels?
 
-  Realtime-friendly RCU can be enabled via the CONFIG_PREEMPT_RCU
+  Realtime-friendly RCU are enabled via the CONFIG_PREEMPTION
   kernel configuration parameter.
 
 - Where can I find more information on RCU?