[PATCH RFC tip/core/rcu 0/2] rcu: make RCU lockdep handle early boot in organized manner

["Paul E. McKenney" <paulmck@linux.vnet.ibm.com>]

Hello!

This patch set makes RCU lockdep handle early boot in an organized
manner:

1.	Make rcu_read_lock_held(), rcu_read_lock_bh_held(),
	rcu_read_lock_sched_held(), and rcu_dereference_check()
	suppress complaints if !rcu_scheduler_active.  The rationale
	for this approach is that RCU grace periods are handled very
	differently during early boot, and rcu_scheduler_active marks
	the point that normal runtime RCU behavior starts.

2.	Remove the !rcu_scheduler_active check from calls to
	rcu_dereference_check(), because rcu_dereference_check() already
	does the check in question.

Testing in progress, but want to get these out for review.

							Thanx, Paul

------------------------------------------------------------------------

 cgroup.h   |    2 --
 rcupdate.h |   27 +++++++++++++++++----------
 2 files changed, 17 insertions(+), 12 deletions(-)