[tip:locking/core] tools/memory-order: Improve key for SELF and SV

[tip-bot for Paul E. McKenney]

Commit-ID:  35bb6ee6790600d29c598ebbf262359341f34e38
Gitweb:     https://git.kernel.org/tip/35bb6ee6790600d29c598ebbf262359341f34e38
Author:     Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
AuthorDate: Mon, 14 May 2018 16:33:43 -0700
Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Tue, 15 May 2018 08:11:16 +0200

tools/memory-order: Improve key for SELF and SV

The key for "SELF" was missing completely and the key for "SV" was
a bit obtuse.  This commit therefore adds a key for "SELF" and improves
the one for "SV".

Reported-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Cc: akiyks@xxxxxxxxx
Cc: boqun.feng@xxxxxxxxx
Cc: dhowells@xxxxxxxxxx
Cc: j.alglave@xxxxxxxxx
Cc: linux-arch@xxxxxxxxxxxxxxx
Cc: luc.maranget@xxxxxxxx
Cc: npiggin@xxxxxxxxx
Cc: parri.andrea@xxxxxxxxx
Link: http://lkml.kernel.org/r/1526340837-12222-5-git-send-email-paulmck@xxxxxxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 tools/memory-model/Documentation/cheatsheet.txt | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/memory-model/Documentation/cheatsheet.txt b/tools/memory-model/Documentation/cheatsheet.txt
index c0eafdaddfa4..46fe79afc737 100644
--- a/tools/memory-model/Documentation/cheatsheet.txt
+++ b/tools/memory-model/Documentation/cheatsheet.txt
@@ -26,4 +26,5 @@ Key:	C:	Ordering is cumulative
 	DR:	Dependent read (address dependency)
 	DW:	Dependent write (address, data, or control dependency)
 	RMW:	Atomic read-modify-write operation
-	SV	Same-variable access
+	SELF:	Orders self, as opposed to accesses before and/or after
+	SV:	Orders later accesses to the same variable