tree 26786609cbbbecadbcd427571b07afef2cf4d907
parent fd2a37e8a922a403efe0e32c18d71fa0d41d5195
author Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1425484384 -0800
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1425588414 -0800

rcu: Create an immutable rcu_data_p pointer to default rcu_data structure

This commit creates an immutable rcu_data_p pointer that references
rcu_preempt_data for TREE_PREEMPT_RCU builds and that references
rcu_sched_data for TREE_RCU builds.  This rcu_data_p pointer will enable
more code to move from #ifdef to IS_ENABLED().

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>