[PATCH 1/2] Documentation/memory-barriers.txt: cross-reference "tools/memory-model/"

[Andrea Parri <parri.andrea@gmail.com>]

Recent efforts led to the specification of a memory consistency model
for the Linux kernel [1], which "can (roughly speaking) be thought of
as an automated version of memory-barriers.txt" and which is (in turn)
"accompanied by extensive documentation on its use and its design".

Make sure that the (occasional) reader of memory-barriers.txt will be
aware of these developments.

[1] https://marc.info/?l=linux-kernel&m=151687290114799&w=2

Signed-off-by: Andrea Parri <parri.andrea@gmail.com>
---
 Documentation/memory-barriers.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/memory-barriers.txt b/Documentation/memory-barriers.txt
index a863009849a3b..8cc3f098f4a7d 100644
--- a/Documentation/memory-barriers.txt
+++ b/Documentation/memory-barriers.txt
@@ -17,7 +17,9 @@ meant as a guide to using the various memory barriers provided by Linux, but
 in case of any doubt (and there are many) please ask.
 
 To repeat, this document is not a specification of what Linux expects from
-hardware.
+hardware.  For such a specification, in the form of a memory consistency
+model, and for documentation about its usage and its design, the reader is
+referred to "tools/memory-model/".
 
 The purpose of this document is twofold:
 
-- 
2.7.4