Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux

Merge commit 'linus' into x86/urgent, to pick up recent x86 changes

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

Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull RCU updates from Ingo Molnar:
"The changes in this cycle were:

- Adding transitivity uniformly to

Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull RCU updates from Ingo Molnar:
"The changes in this cycle were:

- Adding transitivity uniformly to rcu_node structure ->lock
acquisitions. (This is implemented by the first two commits on top
of v4.4-rc2 due to the pervasive nature of this change.)

- Documentation updates, including RCU requirements.

- Expedited grace-period changes.

- Miscellaneous fixes.

- Linked-list fixes, courtesy of KTSAN.

- Torture-test updates.

- Late-breaking fix to sysrq-generated crash.

One thing I should note is that these pieces of documentation are
fairly large files:

.../RCU/Design/Requirements/Requirements.html | 2897 ++++++++++++++++++++
.../RCU/Design/Requirements/Requirements.htmlx | 2741 ++++++++++++++++++

and are written in HTML, not the usual .txt style. I hope they are
fine"

Paul McKenney explains the html docs:
"For whatever it is worth, the reason for this unconventional choice
was that attempts to do the diagrams in ASCII art failed miserably.

And attempts to do ASCII art for the upcoming documentation of the
data structures failed even more miserably"

* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (49 commits)
sysrq: Fix warning in sysrq generated crash.
list: Add lockless list traversal primitives
rcu: Make rcu_gp_init() be bool rather than int
rcu: Move wakeup out from under rnp->lock
rcu: Fix comment for rcu_dereference_raw_notrace
rcu: Don't redundantly disable irqs in rcu_irq_{enter,exit}()
rcu: Make cpu_needs_another_gp() be bool
rcu: Eliminate unused rcu_init_one() argument
rcu: Remove TINY_RCU bloat from pointless boot parameters
torture: Place console.log files correctly from the get-go
torture: Abbreviate console error dump
rcutorture: Print symbolic name for ->gp_state
rcutorture: Print symbolic name for rcu_torture_writer_state
rcutorture: Remove CONFIG_RCU_USER_QS from rcutorture selftest doc
rcutorture: Default grace period to three minutes, allow override
rcutorture: Dump stack when GP kthread stalls
rcutorture: Flag nonexistent RCU GP kthread
rcutorture: Add batch number to script printout
Documentation/memory-barriers.txt: Fix ACCESS_ONCE thinko
documentation: Update RCU requirements based on expedited changes
...

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Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu

Pull RCU changes from Paul E. McKenney:

- Adding transitivity uniformly to rcu_node struct

Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu

Pull RCU changes from Paul E. McKenney:

- Adding transitivity uniformly to rcu_node structure ->lock
acquisitions. (This is implemented by the first two commits
on top of v4.4-rc2 due to the pervasive nature of this change.)

- Documentation updates, including RCU requirements.

- Expedited grace-period changes.

- Miscellaneous fixes.

- Linked-list fixes, courtesy of KTSAN.

- Torture-test updates.

- Late-breaking fix to sysrq-generated crash.

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

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documentation: Record RCU requirements

This commit adds RCU requirements as published in a 2015 LWN series.
Bringing these requirements in-tree allows them to be updated as changes
are discovered.

documentation: Record RCU requirements

This commit adds RCU requirements as published in a 2015 LWN series.
Bringing these requirements in-tree allows them to be updated as changes
are discovered.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
[ paulmck: Updates to charset and URLs as suggested by Josh Triplett. ]

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