From: Paul E. McKenney <paul.mckenney@linaro.org>
Date: Fri, 24 Feb 2012 01:13:19 +0000 (-0800)
Subject: rcu: Make RCU_FAST_NO_HZ use timer rather than hrtimer
X-Git-Tag: v3.5-rc1~164^2^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2ee3dc80660ac8285a37e662fd91b2e45c46f06a;p=pandora-kernel.git

rcu: Make RCU_FAST_NO_HZ use timer rather than hrtimer

The RCU_FAST_NO_HZ facility uses an hrtimer to wake up a CPU when
it is allowed to go into dyntick-idle mode, which is almost always
cancelled soon after.  This is not what hrtimers are good at, so
this commit switches to the timer wheel.

Reported-by: Steven Rostedt <rostedt@goodmis.org>
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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