From: Paul E. McKenney <paul.mckenney@linaro.org>
Date: Mon, 16 Jan 2012 21:29:10 +0000 (-0800)
Subject: rcu: Print scheduling-clock information on RCU CPU stall-warning messages
X-Git-Tag: v3.4-rc1~194^2^2~19
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a858af2875fb291d0f4b0a4419fefbf03c2379c0;p=pandora-kernel.git

rcu: Print scheduling-clock information on RCU CPU stall-warning messages

There have been situations where RCU CPU stall warnings were caused by
issues in scheduling-clock timer initialization.  To make it easier to
track these down, this commit causes the RCU CPU stall-warning messages
to print out the number of scheduling-clock interrupts taken in the
current grace period for each stalled CPU.

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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