rcu: Print scheduling-clock information on RCU CPU stall-warning messages
authorPaul E. McKenney <paul.mckenney@linaro.org>
Mon, 16 Jan 2012 21:29:10 +0000 (13:29 -0800)
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Tue, 21 Feb 2012 17:03:49 +0000 (09:03 -0800)
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>
kernel/rcutree.c
kernel/rcutree.h
kernel/rcutree_plugin.h
lib/Kconfig.debug

Simple merge
Simple merge
Simple merge
Simple merge