tree eef4c1ae5e39c7c1db844dbecc3155be55daa92d
parent b6505deafa1397c81c3f268bfe0f349cf0be2b97
author Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1422767522 -0800
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1426105359 -0700

rcu: Remove event tracing from rcu_cpu_notify(), used by offline CPUs

Offline CPUs cannot safely invoke trace events, but such CPUs do execute
within rcu_cpu_notify().  Therefore, this commit removes the trace events
from rcu_cpu_notify().  These trace events are for utilization, against
which rcu_cpu_notify() execution time should be negligible.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>