diff options
| -rw-r--r-- | Documentation/RCU/rcu.rst | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/Documentation/RCU/rcu.rst b/Documentation/RCU/rcu.rst index 3cfe01ba9a49..381cb86f657d 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? |