[PATCH tip/core/rcu 0/6] Documentation updates for 3.21^W4.1

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

Hello!

This series contains a few documentation updates:

1.	Record the fact that the rcutree.kthread_prio kernel boot parameter
	also controls the priority of the grace-period kthreads.

2.	Update the kernel-per-CPU-kthreads.txt documentation based on
	Christoph Lameter's on-demand vmstat workers commit.

3.	Update NO_HZ.txt documentation to reflect the fact that POSIX
	timers are no longer starved on adaptive-ticks CPUs.

4.	Update kernel-per-CPU-kthreads.txt documentation to reflect
	workqueue usage and nosoftlockup boot parameter.

5.	Clarify memory-barrier semantics of atomic operations.

6.	Clarify control-dependency pairing.

							Thanx, Paul

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

 b/Documentation/atomic_ops.txt              |   45 ++++++++++++++--------------
 b/Documentation/kernel-parameters.txt       |   14 +++++---
 b/Documentation/kernel-per-CPU-kthreads.txt |   34 +++++++++++++--------
 b/Documentation/memory-barriers.txt         |   42 ++++++++++++++++++--------
 b/Documentation/timers/NO_HZ.txt            |   10 +-----
 5 files changed, 85 insertions(+), 60 deletions(-)