[PATCH tip/core/rcu 0/14] Documentation updates for 4.6

[Paul E. McKenney]

Hello!

This series contains documentation updates as follows:

1.	Update the requirements design-level documentation to record RCU's
	responsibility to avoid injecting OS jitter onto nohz_full CPUs.

2.	Fix control-dependency summary of memory-barriers.txt to
	note that barrier() does not always prevent code reordering
	when both legs of an "if" statement begin with identical code.

3.	Fix memory-barriers.txt section references.

4.	Update the requirements design-level documentation to add
	synchronize_rcu_mult().

5.	Remove obsolete references to RCU-protected array indexes from
	memory-barriers.txt.

6.	Update memory-barriers.txt to explicitly state that
	rcu_dereference() orders writes to as well as reads from
	the RCU-protected data item.

7.	Update memory-barriers.txt to distinguish between local and
	global transitivity.

8.	Update memory-barriers.txt to add alternative outcome from
	release-acquire chain.

9.	Add design-level documentation for RCU's major data structures.

10.	Update the requirements design-level documentation to explain
	why rcu_read_lock() needs no barrier() for PREEMPT=n.

11.	Remove misleading statement that transitivity is cumulativity
	from memory-barriers.txt.

12.	Update the requirements design-level documentation to explicitly
	state that it is illegal to invoke call_rcu() from an offline CPU.

13.	Add text to the design-level documentation for RCU's major data
	structures stating how the combining tree keeps lock contention
	under control.

14.	Clarify compiler store-fusion example in memory-barriers.txt.

							Thanx, Paul

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

 RCU/Design/Data-Structures/BigTreeClassicRCU.svg            |  474 ++++
 RCU/Design/Data-Structures/BigTreeClassicRCUBH.svg          |  499 ++++
 RCU/Design/Data-Structures/BigTreeClassicRCUBHdyntick.svg   |  695 +++++
 RCU/Design/Data-Structures/BigTreePreemptRCUBHdyntick.svg   |  741 ++++++
 RCU/Design/Data-Structures/BigTreePreemptRCUBHdyntickCB.svg |  858 +++++++
 RCU/Design/Data-Structures/Data-Structures.html             | 1395 ++++++++++++
 RCU/Design/Data-Structures/Data-Structures.htmlx            | 1295 +++++++++++
 RCU/Design/Data-Structures/HugeTreeClassicRCU.svg           |  939 ++++++++
 RCU/Design/Data-Structures/TreeLevel.svg                    |  828 +++++++
 RCU/Design/Data-Structures/TreeMapping.svg                  |  305 ++
 RCU/Design/Data-Structures/TreeMappingLevel.svg             |  380 +++
 RCU/Design/Data-Structures/blkd_task.svg                    |  843 +++++++
 RCU/Design/Data-Structures/nxtlist.svg                      |  396 +++
 RCU/Design/Requirements/Requirements.html                   |  235 +-
 RCU/Design/Requirements/Requirements.htmlx                  |  121 +
 memory-barriers.txt                                         |  141 -
 16 files changed, 10074 insertions(+), 71 deletions(-)