From: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Date: Tue, 1 Jul 2014 19:22:23 +0000 (-0700)
Subject: rcu: Add synchronous grace-period waiting for RCU-tasks
X-Git-Tag: fixes-against-v3.18-rc2~103^2~1^2~15^2~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=53c6d4edf874d3cbc031a53738c6cba9277faea5;p=pandora-kernel.git

rcu: Add synchronous grace-period waiting for RCU-tasks

It turns out to be easier to add the synchronous grace-period waiting
functions to RCU-tasks than to work around their absense in rcutorture,
so this commit adds them.  The key point is that the existence of
call_rcu_tasks() means that rcutorture needs an rcu_barrier_tasks().

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