doc: Add CONFIG_RCU_STRICT_GRACE_PERIOD to checklist.rst

This commit adds CONFIG_RCU_STRICT_GRACE_PERIOD to the list of debugging
Kconfig options in checklist.rst.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>

diff --git a/Documentation/RCU/checklist.rst b/Documentation/RCU/checklist.rst
index 98a622f772481647a55d1af1e4d6c375526b514f..addd5c1547a420d2ea1ce8e66264d1cc8f9116e5 100644 (file)
--- a/Documentation/RCU/checklist.rst
+++ b/Documentation/RCU/checklist.rst
@@ -491,6 +491,12 @@ over a rather long period of time, but improvements are always welcome!
                since the last time that you passed that same object to
                call_rcu() (or friends).
 
+       CONFIG_RCU_STRICT_GRACE_PERIOD:
+               combine with KASAN to check for pointers leaked out
+               of RCU read-side critical sections.  This Kconfig
+               option is tough on both performance and scalability,
+               and so is limited to four-CPU systems.
+
        __rcu sparse checks:
                tag the pointer to the RCU-protected data structure
                with __rcu, and sparse will warn you if you access that