1 files changed, 5 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index f5582dcdf80d..a1cb88d9864e 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2992,6 +2992,11 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                         Set maximum number of finished RCU callbacks to
                         process in one batch.
 
+        rcutree.dump_tree=      [KNL]
+                        Dump the structure of the rcu_node combining tree
+                        out at early boot.  This is used for diagnostic
+                        purposes, to verify correct tree setup.
+
         rcutree.gp_cleanup_delay=       [KNL]
                         Set the number of jiffies to delay each step of
                         RCU grace-period cleanup.  This only has effect