[GIT PULL lkmm] LKMM commits for v5.15

[Paul E. McKenney]

Hello, Ingo!

This pull request contains changes for the Linux-kernel memory model
(LKMM).  These changes focus on documentation, providing additional
examples and use cases.  These have been posted to LKML:

https://lore.kernel.org/lkml/20210721211003.869892-1-paulmck@xxxxxxxxxx/
https://lore.kernel.org/lkml/20210721211003.869892-2-paulmck@xxxxxxxxxx/
https://lore.kernel.org/lkml/20210721211003.869892-3-paulmck@xxxxxxxxxx/
https://lore.kernel.org/lkml/20210721211003.869892-4-paulmck@xxxxxxxxxx/

They have been exposed to -next and the kernel test robot, not that these
services do all that much for documentation changes.

The following changes since commit 2734d6c1b1a089fb593ef6a23d4b70903526fe0c:

  Linux 5.14-rc2 (2021-07-18 14:13:49 -0700)

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 87859a8e3f083bd57b34e6a962544d775a76b15f:

  tools/memory-model: Document data_race(READ_ONCE()) (2021-07-27 11:48:55 -0700)

----------------------------------------------------------------
Manfred Spraul (1):
      tools/memory-model: Heuristics using data_race() must handle all values

Paul E. McKenney (3):
      tools/memory-model: Make read_foo_diagnostic() more clearly diagnostic
      tools/memory-model: Add example for heuristic lockless reads
      tools/memory-model: Document data_race(READ_ONCE())

 .../memory-model/Documentation/access-marking.txt  | 151 ++++++++++++++++++---
 1 file changed, 135 insertions(+), 16 deletions(-)