From: Paul E. McKenney <paul.mckenney@linaro.org>
Date: Thu, 5 Jan 2012 22:44:39 +0000 (-0800)
Subject: rcu: Add diagnostic for misaligned rcu_head structures
X-Git-Tag: v3.4-rc1~194^2^2~44
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0bb7b59d6e2b8440cd7097097dd4bbfc4d76ed07;p=pandora-kernel.git

rcu: Add diagnostic for misaligned rcu_head structures

The push for energy efficiency will require that RCU tag rcu_head
structures to indicate whether or not their invocation is time critical.
This tagging is best carried out in the bottom bits of the ->next
pointers in the rcu_head structures.  This tagging requires that the
rcu_head structures be properly aligned, so this commit adds the required
diagnostics.

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