tree a66584d2cb68cebda327313f78b8f4eb602ed4ef
parent a26ac2455ffcf3be5c6ef92bc6df7182700f2114
author Paul E. McKenney <paul.mckenney@linaro.org> 1297111635 -0800
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1304662615 -0700

rcu: priority boosting for TREE_PREEMPT_RCU

Add priority boosting for TREE_PREEMPT_RCU, similar to that for
TINY_PREEMPT_RCU.  This is enabled by the default-off RCU_BOOST
kernel parameter.  The priority to which to boost preempted
RCU readers is controlled by the RCU_BOOST_PRIO kernel parameter
(defaulting to real-time priority 1) and the time to wait before
boosting the readers who are blocking a given grace period is
controlled by the RCU_BOOST_DELAY kernel parameter (defaulting to
500 milliseconds).

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