[PATCH tip/core/rcu 0/4] rcu: suppress RCU lockdep early-boot warnings and fixes

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

Hello!

This patch series suppresses early-boot RCU-lockdep warnings and fixes
a couple of other RCU lockdep issues:

1.	Use a wrapper function to query lockdep about tasklist_lock
	instead of (re-)exporting tasklist_lock to modules.

2.	Suppress early-boot RCU-lockdep warnings.

3.	Revert an earlier lockdep-RCU patch that manually checked for
	early boot.

4.	Add a couple of variables to the lockdep_rcu_dereference()
	output.

Testing identified a couple of lockdep splats that I thought were due
to early boot issues, but which turned out to be not -quite- that early.
These will be dealt with by a pair of later patches.

							Thanx, Paul

 include/linux/cgroup.h   |    2 --
 include/linux/cred.h     |    2 +-
 include/linux/rcupdate.h |   35 ++++++++++++++++++++++++++---------
 include/linux/sched.h    |    4 ++++
 kernel/exit.c            |    2 +-
 kernel/fork.c            |    9 ++++++++-
 kernel/lockdep.c         |    2 +-
 kernel/pid.c             |    5 +++--
 lib/locking-selftest.c   |    6 +++++-
 9 files changed, 49 insertions(+), 18 deletions(-)