From: Paul E. McKenney <paul.mckenney@linaro.org>
Date: Sun, 19 Jun 2011 05:26:31 +0000 (-0700)
Subject: rcu: Event-trace markers for computing RCU CPU utilization
X-Git-Tag: v3.2-rc1~165^2^2~31
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=300df91ca9358f7f09298eec9503c12b32054ef7;p=pandora-kernel.git

rcu: Event-trace markers for computing RCU CPU utilization

This commit adds the trace_rcu_utilization() marker that is to be
used to allow postprocessing scripts compute RCU's CPU utilization,
give or take event-trace overhead.  Note that we do not include RCU's
dyntick-idle interface because event tracing requires RCU protection,
which is not available in dyntick-idle mode.

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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