tree b9866241327c17a810c3c9ca9bac0f525762cb7e
parent 910b1b7e19a292ff685001caf1bf1a9775b771a1
author Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1280968272 -0700
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1282263484 -0700

rcu: Fix RCU_FANOUT help message

Commit cf244dc01bf68 added a fourth level to the TREE_RCU hierarchy,
but the RCU_FANOUT help message still said "cube root".  This commit
fixes this to "fourth root" and also emphasizes that production
systems are well-served by the default.  (Stress-testing RCU itself
uses small RCU_FANOUT values in order to test large-system code paths
on small(er) systems.)

Located-by: John Kacur <jkacur@redhat.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>