From: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Date: Wed, 21 Jul 2010 13:52:40 +0000 (-0700)
Subject: rcu: restrict TREE_RCU to SMP builds with !PREEMPT
X-Git-Tag: v2.6.37-rc1~215^2~14^2~13
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=687d7a960aea46e016182c7ce346d62c4dbd0366;p=pandora-kernel.git

rcu: restrict TREE_RCU to SMP builds with !PREEMPT

Because both TINY_RCU and TREE_PREEMPT_RCU have been in mainline for
several releases, it is time to restrict the use of TREE_RCU to SMP
non-preemptible systems.  This reduces testing/validation effort.  This
commit is a first step towards driving the selection of RCU implementation
directly off of the SMP and PREEMPT configuration parameters.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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