Merge branch 'rcu/next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck...

Pull RCU changes from Paul E. McKenney:

"The major changes for this series are:

 1.      Simplify RCU's grace-period and callback processing based on
         the new numbering for callbacks.  These were posted to LKML at
         https://lkml.org/lkml/2013/5/20/330.

 2.      Documentation updates.  These were posted to LKML at
         https://lkml.org/lkml/2013/5/20/348.

 3.      Miscellaneous fixes, including converting a few remaining printk()
         calls to pr_*().  These were posted to LKML at
         https://lkml.org/lkml/2013/5/20/324.

 4.      SRCU-related changes and fixes.  These were posted to LKML at
         https://lkml.org/lkml/2013/5/20/425.

 5.      Removal of TINY_PREEMPT_RCU in favor of TREE_PREEMPT_RCU for
         single-CPU low-latency systems.  These were posted to LKML at
         https://lkml.org/lkml/2013/5/20/427."

Signed-off-by: Ingo Molnar <mingo@kernel.org>