[PATCH memory-model 06/19] tools/memory-order: smp_mb__after_atomic() orders later RMW operations

From: Paul E. McKenney
Date: Mon May 14 2018 - 19:34:20 EST

The current cheat sheet does not claim that smp_mb__after_atomic()
orders later RMW atomic operations, which it must, at least against
earlier RMW atomic operations and whatever precedes them. This commit
therefore adds the needed "Y".

Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
tools/memory-model/Documentation/cheatsheet.txt | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/memory-model/Documentation/cheatsheet.txt b/tools/memory-model/Documentation/cheatsheet.txt
index 46fe79afc737..33ba98d72b16 100644
--- a/tools/memory-model/Documentation/cheatsheet.txt
+++ b/tools/memory-model/Documentation/cheatsheet.txt
@@ -14,7 +14,7 @@ smp_wmb() Y W Y Y W
smp_mb() & synchronize_rcu() CP Y Y Y Y Y Y Y Y
Successful full non-void RMW CP Y Y Y Y Y Y Y Y Y Y Y
smp_mb__before_atomic() CP Y Y Y a a a a Y
-smp_mb__after_atomic() CP a a Y Y Y Y Y
+smp_mb__after_atomic() CP a a Y Y Y Y Y Y

Key: C: Ordering is cumulative