From: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Date: Fri, 1 Apr 2011 14:15:14 +0000 (-0700)
Subject: rcu: create new rcu_access_index() and use in mce
X-Git-Tag: v2.6.39-rc2~22^2^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a4dd99250dc49031e6a92a895dbcc230a4832083;p=pandora-kernel.git

rcu: create new rcu_access_index() and use in mce

The MCE subsystem needs to sample an RCU-protected index outside of
any protection for that index.  If this was a pointer, we would use
rcu_access_pointer(), but there is no corresponding rcu_access_index().
This commit therefore creates an rcu_access_index() and applies it
to MCE.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: Zdenek Kabelac <zkabelac@redhat.com>
---

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