[PATCH RFC LKMM 2/7] doc: Replace smp_cond_acquire() with smp_cond_load_acquire()

From: Paul E. McKenney
Date: Wed Aug 29 2018 - 17:11:09 EST

From: Andrea Parri <andrea.parri@xxxxxxxxxxxxxxxxxxxx>

Amend commit 1f03e8d2919270 ("locking/barriers: Replace smp_cond_acquire()
with smp_cond_load_acquire()") by updating the documentation accordingly.
Also remove some obsolete information related to the implementation.

Signed-off-by: Andrea Parri <andrea.parri@xxxxxxxxxxxxxxxxxxxx>
Cc: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Boqun Feng <boqun.feng@xxxxxxxxx>
Cc: Nicholas Piggin <npiggin@xxxxxxxxx>
Cc: David Howells <dhowells@xxxxxxxxxx>
Cc: Jade Alglave <j.alglave@xxxxxxxxx>
Cc: Luc Maranget <luc.maranget@xxxxxxxx>
Cc: "Paul E. McKenney" <paulmck@xxxxxxxxxxxxxxxxxx>
Cc: Akira Yokosawa <akiyks@xxxxxxxxx>
Cc: Daniel Lustig <dlustig@xxxxxxxxxx>
Cc: Jonathan Corbet <corbet@xxxxxxx>
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
Documentation/memory-barriers.txt | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/Documentation/memory-barriers.txt b/Documentation/memory-barriers.txt
index 0d8d7ef131e9..c1d913944ad8 100644
--- a/Documentation/memory-barriers.txt
+++ b/Documentation/memory-barriers.txt
@@ -471,8 +471,7 @@ And a couple of implicit varieties:
operations after the ACQUIRE operation will appear to happen after the
ACQUIRE operation with respect to the other components of the system.
ACQUIRE operations include LOCK operations and both smp_load_acquire()
- and smp_cond_acquire() operations. The later builds the necessary ACQUIRE
- semantics from relying on a control dependency and smp_rmb().
+ and smp_cond_load_acquire() operations.

Memory operations that occur before an ACQUIRE operation may appear to
happen after it completes.