From: Paul E. McKenney <paul.mckenney@linaro.org>
Date: Tue, 28 Sep 2010 00:25:23 +0000 (-0700)
Subject: rcu: priority boosting for TINY_PREEMPT_RCU
X-Git-Tag: v2.6.38-rc1~492^2^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=24278d148316d2180be6df40e06db013d8b232b8;p=pandora-kernel.git

rcu: priority boosting for TINY_PREEMPT_RCU

Add priority boosting, but only 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 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>
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