From: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Date: Fri, 25 Jan 2008 20:08:24 +0000 (+0100)
Subject: Preempt-RCU: fix rcu_barrier for preemptive environment.
X-Git-Tag: v2.6.25-rc1~1237^2~36
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e0ecfa7917cafe72f4a75f87e8bb5d8d51dc534f;p=pandora-kernel.git

Preempt-RCU: fix rcu_barrier for preemptive environment.

Fix rcu_barrier() to work properly in preemptive kernel environment.
Also, the ordering of callback must be preserved while moving
callbacks to another CPU during CPU hotplug.

Signed-off-by: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Dipankar Sarma <dipankar@in.ibm.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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