linux-kernel - [GIT PULL] LKMM changes for v6.11

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Message-ID: <583d22d2-a123-4131-b4ac-20980357592b@paulmck-laptop>
Date: Sun, 14 Jul 2024 09:28:43 -0700
From: "Paul E. McKenney" <paulmck@...nel.org>
To: torvalds@...ux-foundation.org
Cc: linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	lkmm@...ts.linux.dev, stern@...land.harvard.edu,
	parri.andrea@...il.com, will@...nel.org, peterz@...radead.org,
	boqun.feng@...il.com, npiggin@...il.com, dhowells@...hat.com,
	j.alglave@....ac.uk, luc.maranget@...ia.fr, akiyks@...il.com,
	dlustig@...dia.com, joel@...lfernandes.org
Subject: [GIT PULL] LKMM changes for v6.11

Hello, Linux,

When the merge window opens, please pull this LKMM update from:

  git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git tags/lkmm.2024.07.12a
  # HEAD: ea6ee1bac6034cb4e91bcc229ed1354ca1a024d5: tools/memory-model: Code reorganization in lock.cat (2024-06-06 11:24:58 -0700)

----------------------------------------------------------------
lkmm: Fix corner-case locking bug and improve documentation

A simple but odd single-process litmus test acquires and immediately
releases a lock, then calls spin_is_locked().  LKMM acts if it was
a deadlock due to an assumption that spin_is_locked() will follow a
spin_lock() or some other process's spin_unlock().  This litmus test
manages to violate this assumption because the spin_is_locked() follows
the same process's spin_unlock().

This series fixes this bug, reorganizes and optimizes the lock.cat model,
and updates documentation.

----------------------------------------------------------------
Alan Stern (2):
      tools/memory-model: Fix bug in lock.cat
      tools/memory-model: Code reorganization in lock.cat

Paul E. McKenney (2):
      tools/memory-model: Add KCSAN LF mentorship session citation
      tools/memory-model: Add access-marking.txt to README

 tools/memory-model/Documentation/README            |  4 ++
 .../memory-model/Documentation/access-marking.txt  | 10 ++--
 tools/memory-model/lock.cat                        | 62 +++++++++++++---------
 3 files changed, 49 insertions(+), 27 deletions(-)