linux-kernel - [PATCH v2 1/4] Documentation: LKMM: Move MP+onceassign+derefonce to new litmus-tests/rcu/

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Date:   Sun, 22 Mar 2020 21:57:32 -0400
From:   "Joel Fernandes (Google)" <joel@...lfernandes.org>
To:     linux-kernel@...r.kernel.org
Cc:     "Joel Fernandes (Google)" <joel@...lfernandes.org>,
        vpillai@...italocean.com, Jonathan Corbet <corbet@....net>,
        Alan Stern <stern@...land.harvard.edu>,
        Andrea Parri <parri.andrea@...il.com>,
        Will Deacon <will@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Boqun Feng <boqun.feng@...il.com>,
        Nicholas Piggin <npiggin@...il.com>,
        David Howells <dhowells@...hat.com>,
        Jade Alglave <j.alglave@....ac.uk>,
        Luc Maranget <luc.maranget@...ia.fr>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Akira Yokosawa <akiyks@...il.com>,
        Daniel Lustig <dlustig@...dia.com>, linux-doc@...r.kernel.org
Subject: [PATCH v2 1/4] Documentation: LKMM: Move MP+onceassign+derefonce to new litmus-tests/rcu/

Move MP+onceassign+derefonce to the new Documentation/litmus-tests/rcu/
directory.

More RCU-related litmus tests would be added here.

Signed-off-by: Joel Fernandes (Google) <joel@...lfernandes.org>

---
Cc: vpillai@...italocean.com

 Documentation/litmus-tests/README                        | 9 +++++++++
 .../litmus-tests/rcu}/MP+onceassign+derefonce.litmus     | 0
 tools/memory-model/litmus-tests/README                   | 3 ---
 3 files changed, 9 insertions(+), 3 deletions(-)
 create mode 100644 Documentation/litmus-tests/README
 rename {tools/memory-model/litmus-tests => Documentation/litmus-tests/rcu}/MP+onceassign+derefonce.litmus (100%)

diff --git a/Documentation/litmus-tests/README b/Documentation/litmus-tests/README
new file mode 100644
index 0000000000000..84208bc197f2e
--- /dev/null
+++ b/Documentation/litmus-tests/README
@@ -0,0 +1,9 @@
+============
+LITMUS TESTS
+============
+
+RCU (/rcu directory)
+--------------------
+MP+onceassign+derefonce.litmus
+    Demonstrates that rcu_assign_pointer() and rcu_dereference() to
+    ensure that an RCU reader will not see pre-initialization garbage.
diff --git a/tools/memory-model/litmus-tests/MP+onceassign+derefonce.litmus b/Documentation/litmus-tests/rcu/MP+onceassign+derefonce.litmus
similarity index 100%
rename from tools/memory-model/litmus-tests/MP+onceassign+derefonce.litmus
rename to Documentation/litmus-tests/rcu/MP+onceassign+derefonce.litmus
diff --git a/tools/memory-model/litmus-tests/README b/tools/memory-model/litmus-tests/README
index 681f9067fa9ed..79e1b1ed4929a 100644
--- a/tools/memory-model/litmus-tests/README
+++ b/tools/memory-model/litmus-tests/README
@@ -63,9 +63,6 @@ LB+poonceonces.litmus
 	As above, but with store-release replaced with WRITE_ONCE()
 	and load-acquire replaced with READ_ONCE().
 
-MP+onceassign+derefonce.litmus
-	As below, but with rcu_assign_pointer() and an rcu_dereference().
-
 MP+polockmbonce+poacquiresilsil.litmus
 	Protect the access with a lock and an smp_mb__after_spinlock()
 	in one process, and use an acquire load followed by a pair of
-- 
2.25.1.696.g5e7596f4ac-goog