commit 353af9c9a866b07492b15a4efd18ec93123d3a1d
author Paul Gortmaker <paul.gortmaker@windriver.com> Thu Dec 20 09:35:02 2012 -0800
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> Tue Jan 08 14:12:18 2013 -0800
tree a514865e4134796a7a1b2cf1ae85e5c89e821eee
parent d1c3ed669a2d452cacfb48c2d171a1f364dae2ed

rcu: Prevent soft-lockup complaints about no-CBs CPUs

The wait_event() at the head of the rcu_nocb_kthread() can result in
soft-lockup complaints if the CPU in question does not register RCU
callbacks for an extended period.  This commit therefore changes
the wait_event() to a wait_event_interruptible().

Reported-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>