rcu: Allow expedited grace periods to be disabled at init
authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Thu, 26 Nov 2015 02:56:00 +0000 (18:56 -0800)
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Fri, 4 Dec 2015 20:26:54 +0000 (12:26 -0800)
commit3e42ec1aa716f10c68294b8492ae3ea684528699
treebe431b624157914bd08d965fed9423fe267ff927
parent967dcb8fe6a9a75be346400539261e0416baf370
rcu: Allow expedited grace periods to be disabled at init

Expedited grace periods can speed up boot, but are undesirable in
aggressive real-time systems.  This commit therefore introduces a
kernel parameter rcupdate.rcu_normal_after_boot that disables
expedited grace periods just before init is spawned.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Documentation/kernel-parameters.txt
kernel/rcu/update.c