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(parent: b6505de) | patch
rcu: Remove event tracing from rcu_cpu_notify(), used by offline CPUs
authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Sun, 1 Feb 2015 05:12:02 +0000 (21:12 -0800)
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Wed, 11 Mar 2015 20:22:39 +0000 (13:22 -0700)
commit999c286347538388170f919146d7cfa58689472e
treeeef4c1ae5e39c7c1db844dbecc3155be55daa92dtree | snapshot (tar.gz zip)
parentb6505deafa1397c81c3f268bfe0f349cf0be2b97commit | diff
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>
kernel/rcu/tree.c diff | blob | blame | history