[GIT PULL memory-model] LKMM commits for v5.9

[GIT PULL memory-model] LKMM commits for v5.9

[Paul E. McKenney]

Hello, Ingo!

This pull request contains Linux-Kernel Memory-Model commits for v5.9.
These have been subjected to LKML review:

	https://lore.kernel.org/lkml/20200623005152.GA27459@paulmck-ThinkPad-P72/

All of these have also been subjected to the kbuild test robot and
-next testing.  The following changes since v5.8-rc3 are available in
the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git lkmm

for you to fetch changes up to 5ef0a07a7928539d46fdb163acfad28c6d877a89:

  Documentation/litmus-tests: Add note on herd7 7.56 in atomic litmus test (2020-06-29 12:05:18 -0700)

----------------------------------------------------------------
Akira Yokosawa (5):
      tools/memory-model: Fix reference to litmus test in recipes.txt
      Documentation/litmus-tests: Merge atomic's README into top-level one
      tools/memory-model/README: Expand dependency of klitmus7
      tools/memory-model/README: Mention herdtools7 7.56 in compatibility table
      Documentation/litmus-tests: Add note on herd7 7.56 in atomic litmus test

Boqun Feng (4):
      tools/memory-model: Add an exception for limitations on _unless() family
      Documentation/litmus-tests: Introduce atomic directory
      Documentation/litmus-tests/atomic: Add a test for atomic_set()
      Documentation/litmus-tests/atomic: Add a test for smp_mb__after_atomic()

Joel Fernandes (Google) (4):
      Documentation: LKMM: Add litmus test for RCU GP guarantee where updater frees object
      Documentation: LKMM: Add litmus test for RCU GP guarantee where reader stores
      MAINTAINERS: Update maintainers for new Documentation/litmus-tests
      Documentation/litmus-tests: Cite an RCU litmus test

Marco Elver (1):
      tools/memory-model: Fix "conflict" definition

Paul E. McKenney (1):
      tools/memory-model: Add recent references

 Documentation/atomic_t.txt                         | 24 +++----
 Documentation/litmus-tests/README                  | 35 +++++++++
 ...b__after_atomic-is-stronger-than-acquire.litmus | 32 +++++++++
 ...Atomic-RMW-ops-are-atomic-WRT-atomic_set.litmus | 25 +++++++
 .../litmus-tests/rcu/RCU+sync+free.litmus          | 42 +++++++++++
 .../litmus-tests/rcu/RCU+sync+read.litmus          | 37 ++++++++++
 MAINTAINERS                                        |  2 +
 tools/memory-model/Documentation/explanation.txt   | 83 ++++++++++++----------
 tools/memory-model/Documentation/recipes.txt       |  2 +-
 tools/memory-model/Documentation/references.txt    | 21 +++++-
 tools/memory-model/README                          | 40 +++++++++--
 11 files changed, 285 insertions(+), 58 deletions(-)
 create mode 100644 Documentation/litmus-tests/README
 create mode 100644 Documentation/litmus-tests/atomic/Atomic-RMW+mb__after_atomic-is-stronger-than-acquire.litmus
 create mode 100644 Documentation/litmus-tests/atomic/Atomic-RMW-ops-are-atomic-WRT-atomic_set.litmus
 create mode 100644 Documentation/litmus-tests/rcu/RCU+sync+free.litmus
 create mode 100644 Documentation/litmus-tests/rcu/RCU+sync+read.litmus