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Message-ID: <2acf8de5-efe9-a205-cb62-04c4774008c0@gmail.com>
Date: Wed, 25 Nov 2020 20:34:47 +0900
From: Akira Yokosawa <akiyks@...il.com>
To: paulmck@...nel.org
Cc: linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
kernel-team@...com, mingo@...nel.org, stern@...land.harvard.edu,
parri.andrea@...il.com, will@...nel.org, peterz@...radead.org,
boqun.feng@...il.com, npiggin@...il.com, dhowells@...hat.com,
j.alglave@....ac.uk, luc.maranget@...ia.fr,
Akira Yokosawa <akiyks@...il.com>
Subject: Re: [PATCH memory-model 6/8] tools/memory-model: Add types to litmus
tests
On Thu, 5 Nov 2020 14:56:05 -0800, Paul E. McKenney wrote:
> On Fri, Nov 06, 2020 at 07:41:48AM +0900, Akira Yokosawa wrote:
>> Hi Paul,
>>
>> On 2020/11/06 7:00, paulmck@...nel.org wrote:
>>> From: "Paul E. McKenney" <paulmck@...nel.org>
>>>
>>> This commit adds type information for global variables in the litmus
>>> tests in order to allow easier use with klitmus7.
>>
>> IIUC, klitmus7 is happy with existing litmus tests under tools/memory-model.
>> So I don't think this change is necessary.
>>
>> As a matter of fact, I was preparing a patch set to empty most of the
>> initialization blocks in perfbook's CodeSamples/formal/ litmus tests.
>
> Heh! Someone asked for this change several months back, and I failed
> to record who it was. If they don't object, I will remove this patch.
Hi Paul,
I'm seeing this patch still alive in the updated for-mingo-lkmm branch.
Have you got some objection?
Thanks, Akira
>
> Thanx, Paul
>
>>>
>>> Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
>>> ---
>>> tools/memory-model/litmus-tests/CoRR+poonceonce+Once.litmus | 4 +++-
>>> tools/memory-model/litmus-tests/CoRW+poonceonce+Once.litmus | 4 +++-
>>> tools/memory-model/litmus-tests/CoWR+poonceonce+Once.litmus | 4 +++-
>>> tools/memory-model/litmus-tests/CoWW+poonceonce.litmus | 4 +++-
>>> .../litmus-tests/IRIW+fencembonceonces+OnceOnce.litmus | 5 ++++-
>>> tools/memory-model/litmus-tests/IRIW+poonceonces+OnceOnce.litmus | 5 ++++-
>>> .../litmus-tests/ISA2+pooncelock+pooncelock+pombonce.litmus | 7 ++++++-
>>> tools/memory-model/litmus-tests/ISA2+poonceonces.litmus | 6 +++++-
>>> .../ISA2+pooncerelease+poacquirerelease+poacquireonce.litmus | 6 +++++-
>>> .../litmus-tests/LB+fencembonceonce+ctrlonceonce.litmus | 5 ++++-
>>> .../litmus-tests/LB+poacquireonce+pooncerelease.litmus | 5 ++++-
>>> tools/memory-model/litmus-tests/LB+poonceonces.litmus | 5 ++++-
>>> .../litmus-tests/MP+fencewmbonceonce+fencermbonceonce.litmus | 5 ++++-
>>> tools/memory-model/litmus-tests/MP+onceassign+derefonce.litmus | 5 +++--
>>> .../litmus-tests/MP+polockmbonce+poacquiresilsil.litmus | 2 ++
>>> .../memory-model/litmus-tests/MP+polockonce+poacquiresilsil.litmus | 2 ++
>>> tools/memory-model/litmus-tests/MP+polocks.litmus | 6 +++++-
>>> tools/memory-model/litmus-tests/MP+poonceonces.litmus | 5 ++++-
>>> .../litmus-tests/MP+pooncerelease+poacquireonce.litmus | 5 ++++-
>>> tools/memory-model/litmus-tests/MP+porevlocks.litmus | 6 +++++-
>>> tools/memory-model/litmus-tests/R+fencembonceonces.litmus | 5 ++++-
>>> tools/memory-model/litmus-tests/R+poonceonces.litmus | 5 ++++-
>>> .../litmus-tests/S+fencewmbonceonce+poacquireonce.litmus | 5 ++++-
>>> tools/memory-model/litmus-tests/S+poonceonces.litmus | 5 ++++-
>>> tools/memory-model/litmus-tests/SB+fencembonceonces.litmus | 5 ++++-
>>> tools/memory-model/litmus-tests/SB+poonceonces.litmus | 5 ++++-
>>> tools/memory-model/litmus-tests/SB+rfionceonce-poonceonces.litmus | 5 ++++-
>>> tools/memory-model/litmus-tests/WRC+poonceonces+Once.litmus | 5 ++++-
>>> .../litmus-tests/WRC+pooncerelease+fencermbonceonce+Once.litmus | 5 ++++-
>>> .../litmus-tests/Z6.0+pooncelock+poonceLock+pombonce.litmus | 7 ++++++-
>>> .../litmus-tests/Z6.0+pooncelock+pooncelock+pombonce.litmus | 7 ++++++-
>>> .../Z6.0+pooncerelease+poacquirerelease+fencembonceonce.litmus | 6 +++++-
>>> 32 files changed, 130 insertions(+), 31 deletions(-)
>>>
>>> diff --git a/tools/memory-model/litmus-tests/CoRR+poonceonce+Once.litmus b/tools/memory-model/litmus-tests/CoRR+poonceonce+Once.litmus
>>> index 967f9f2..772544f 100644
>>> --- a/tools/memory-model/litmus-tests/CoRR+poonceonce+Once.litmus
>>> +++ b/tools/memory-model/litmus-tests/CoRR+poonceonce+Once.litmus
>>> @@ -7,7 +7,9 @@ C CoRR+poonceonce+Once
>>> * reads from the same variable are ordered.
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> +}
>>>
>>> P0(int *x)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/CoRW+poonceonce+Once.litmus b/tools/memory-model/litmus-tests/CoRW+poonceonce+Once.litmus
>>> index 4635739..5faae98 100644
>>> --- a/tools/memory-model/litmus-tests/CoRW+poonceonce+Once.litmus
>>> +++ b/tools/memory-model/litmus-tests/CoRW+poonceonce+Once.litmus
>>> @@ -7,7 +7,9 @@ C CoRW+poonceonce+Once
>>> * a given variable and a later write to that same variable are ordered.
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> +}
>>>
>>> P0(int *x)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/CoWR+poonceonce+Once.litmus b/tools/memory-model/litmus-tests/CoWR+poonceonce+Once.litmus
>>> index bb068c9..77c9cc9 100644
>>> --- a/tools/memory-model/litmus-tests/CoWR+poonceonce+Once.litmus
>>> +++ b/tools/memory-model/litmus-tests/CoWR+poonceonce+Once.litmus
>>> @@ -7,7 +7,9 @@ C CoWR+poonceonce+Once
>>> * given variable and a later read from that same variable are ordered.
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> +}
>>>
>>> P0(int *x)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/CoWW+poonceonce.litmus b/tools/memory-model/litmus-tests/CoWW+poonceonce.litmus
>>> index 0d9f0a9..85ef746 100644
>>> --- a/tools/memory-model/litmus-tests/CoWW+poonceonce.litmus
>>> +++ b/tools/memory-model/litmus-tests/CoWW+poonceonce.litmus
>>> @@ -7,7 +7,9 @@ C CoWW+poonceonce
>>> * writes to the same variable are ordered.
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> +}
>>>
>>> P0(int *x)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/IRIW+fencembonceonces+OnceOnce.litmus b/tools/memory-model/litmus-tests/IRIW+fencembonceonces+OnceOnce.litmus
>>> index e729d27..87aa900 100644
>>> --- a/tools/memory-model/litmus-tests/IRIW+fencembonceonces+OnceOnce.litmus
>>> +++ b/tools/memory-model/litmus-tests/IRIW+fencembonceonces+OnceOnce.litmus
>>> @@ -10,7 +10,10 @@ C IRIW+fencembonceonces+OnceOnce
>>> * process? This litmus test exercises LKMM's "propagation" rule.
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> + int y;
>>> +}
>>>
>>> P0(int *x)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/IRIW+poonceonces+OnceOnce.litmus b/tools/memory-model/litmus-tests/IRIW+poonceonces+OnceOnce.litmus
>>> index 4b54dd6..f84022d 100644
>>> --- a/tools/memory-model/litmus-tests/IRIW+poonceonces+OnceOnce.litmus
>>> +++ b/tools/memory-model/litmus-tests/IRIW+poonceonces+OnceOnce.litmus
>>> @@ -10,7 +10,10 @@ C IRIW+poonceonces+OnceOnce
>>> * different process?
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> + int y;
>>> +}
>>>
>>> P0(int *x)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/ISA2+pooncelock+pooncelock+pombonce.litmus b/tools/memory-model/litmus-tests/ISA2+pooncelock+pooncelock+pombonce.litmus
>>> index 094d58d..398f624 100644
>>> --- a/tools/memory-model/litmus-tests/ISA2+pooncelock+pooncelock+pombonce.litmus
>>> +++ b/tools/memory-model/litmus-tests/ISA2+pooncelock+pooncelock+pombonce.litmus
>>> @@ -7,7 +7,12 @@ C ISA2+pooncelock+pooncelock+pombonce
>>> * (in P0() and P1()) is visible to external process P2().
>>> *)
>>>
>>> -{}
>>> +{
>>> + spinlock_t mylock;
>>> + int x;
>>> + int y;
>>> + int z;
>>> +}
>>>
>>> P0(int *x, int *y, spinlock_t *mylock)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/ISA2+poonceonces.litmus b/tools/memory-model/litmus-tests/ISA2+poonceonces.litmus
>>> index b321aa6..212a432 100644
>>> --- a/tools/memory-model/litmus-tests/ISA2+poonceonces.litmus
>>> +++ b/tools/memory-model/litmus-tests/ISA2+poonceonces.litmus
>>> @@ -9,7 +9,11 @@ C ISA2+poonceonces
>>> * of the smp_load_acquire() invocations are replaced by READ_ONCE()?
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> + int y;
>>> + int z;
>>> +}
>>>
>>> P0(int *x, int *y)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/ISA2+pooncerelease+poacquirerelease+poacquireonce.litmus b/tools/memory-model/litmus-tests/ISA2+pooncerelease+poacquirerelease+poacquireonce.litmus
>>> index 025b046..7afd856 100644
>>> --- a/tools/memory-model/litmus-tests/ISA2+pooncerelease+poacquirerelease+poacquireonce.litmus
>>> +++ b/tools/memory-model/litmus-tests/ISA2+pooncerelease+poacquirerelease+poacquireonce.litmus
>>> @@ -11,7 +11,11 @@ C ISA2+pooncerelease+poacquirerelease+poacquireonce
>>> * (AKA non-rf) link, so release-acquire is all that is needed.
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> + int y;
>>> + int z;
>>> +}
>>>
>>> P0(int *x, int *y)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/LB+fencembonceonce+ctrlonceonce.litmus b/tools/memory-model/litmus-tests/LB+fencembonceonce+ctrlonceonce.litmus
>>> index 4727f5a..c8a93c7 100644
>>> --- a/tools/memory-model/litmus-tests/LB+fencembonceonce+ctrlonceonce.litmus
>>> +++ b/tools/memory-model/litmus-tests/LB+fencembonceonce+ctrlonceonce.litmus
>>> @@ -11,7 +11,10 @@ C LB+fencembonceonce+ctrlonceonce
>>> * another control dependency and order would still be maintained.)
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> + int y;
>>> +}
>>>
>>> P0(int *x, int *y)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/LB+poacquireonce+pooncerelease.litmus b/tools/memory-model/litmus-tests/LB+poacquireonce+pooncerelease.litmus
>>> index 07b9904..2fa0295 100644
>>> --- a/tools/memory-model/litmus-tests/LB+poacquireonce+pooncerelease.litmus
>>> +++ b/tools/memory-model/litmus-tests/LB+poacquireonce+pooncerelease.litmus
>>> @@ -8,7 +8,10 @@ C LB+poacquireonce+pooncerelease
>>> * to the other?
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> + int y;
>>> +}
>>>
>>> P0(int *x, int *y)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/LB+poonceonces.litmus b/tools/memory-model/litmus-tests/LB+poonceonces.litmus
>>> index 74c49cb..2107306 100644
>>> --- a/tools/memory-model/litmus-tests/LB+poonceonces.litmus
>>> +++ b/tools/memory-model/litmus-tests/LB+poonceonces.litmus
>>> @@ -7,7 +7,10 @@ C LB+poonceonces
>>> * be prevented even with no explicit ordering?
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> + int y;
>>> +}
>>>
>>> P0(int *x, int *y)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/MP+fencewmbonceonce+fencermbonceonce.litmus b/tools/memory-model/litmus-tests/MP+fencewmbonceonce+fencermbonceonce.litmus
>>> index a273da9..e04b71b 100644
>>> --- a/tools/memory-model/litmus-tests/MP+fencewmbonceonce+fencermbonceonce.litmus
>>> +++ b/tools/memory-model/litmus-tests/MP+fencewmbonceonce+fencermbonceonce.litmus
>>> @@ -8,7 +8,10 @@ C MP+fencewmbonceonce+fencermbonceonce
>>> * is usually better to use smp_store_release() and smp_load_acquire().
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> + int y;
>>> +}
>>>
>>> P0(int *x, int *y)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/MP+onceassign+derefonce.litmus b/tools/memory-model/litmus-tests/MP+onceassign+derefonce.litmus
>>> index 97731b4..18df682 100644
>>> --- a/tools/memory-model/litmus-tests/MP+onceassign+derefonce.litmus
>>> +++ b/tools/memory-model/litmus-tests/MP+onceassign+derefonce.litmus
>>> @@ -10,8 +10,9 @@ C MP+onceassign+derefonce
>>> *)
>>>
>>> {
>>> -y=z;
>>> -z=0;
>>> + int x;
>>> + int *y=z;
>>> + int z=0;
>>> }
>>>
>>> P0(int *x, int **y)
>>> diff --git a/tools/memory-model/litmus-tests/MP+polockmbonce+poacquiresilsil.litmus b/tools/memory-model/litmus-tests/MP+polockmbonce+poacquiresilsil.litmus
>>> index 50f4d62..b1b1266 100644
>>> --- a/tools/memory-model/litmus-tests/MP+polockmbonce+poacquiresilsil.litmus
>>> +++ b/tools/memory-model/litmus-tests/MP+polockmbonce+poacquiresilsil.litmus
>>> @@ -11,6 +11,8 @@ C MP+polockmbonce+poacquiresilsil
>>> *)
>>>
>>> {
>>> + spinlock_t lo;
>>> + int x;
>>> }
>>>
>>> P0(spinlock_t *lo, int *x)
>>> diff --git a/tools/memory-model/litmus-tests/MP+polockonce+poacquiresilsil.litmus b/tools/memory-model/litmus-tests/MP+polockonce+poacquiresilsil.litmus
>>> index abf81e7..867c75d 100644
>>> --- a/tools/memory-model/litmus-tests/MP+polockonce+poacquiresilsil.litmus
>>> +++ b/tools/memory-model/litmus-tests/MP+polockonce+poacquiresilsil.litmus
>>> @@ -11,6 +11,8 @@ C MP+polockonce+poacquiresilsil
>>> *)
>>>
>>> {
>>> + spinlock_t lo;
>>> + int x;
>>> }
>>>
>>> P0(spinlock_t *lo, int *x)
>>> diff --git a/tools/memory-model/litmus-tests/MP+polocks.litmus b/tools/memory-model/litmus-tests/MP+polocks.litmus
>>> index 712a4fcd..63e0f67 100644
>>> --- a/tools/memory-model/litmus-tests/MP+polocks.litmus
>>> +++ b/tools/memory-model/litmus-tests/MP+polocks.litmus
>>> @@ -11,7 +11,11 @@ C MP+polocks
>>> * to see all prior accesses by those other CPUs.
>>> *)
>>>
>>> -{}
>>> +{
>>> + spinlock_t mylock;
>>> + int x;
>>> + int y;
>>> +}
>>>
>>> P0(int *x, int *y, spinlock_t *mylock)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/MP+poonceonces.litmus b/tools/memory-model/litmus-tests/MP+poonceonces.litmus
>>> index 172f014..68180a4 100644
>>> --- a/tools/memory-model/litmus-tests/MP+poonceonces.litmus
>>> +++ b/tools/memory-model/litmus-tests/MP+poonceonces.litmus
>>> @@ -7,7 +7,10 @@ C MP+poonceonces
>>> * no ordering at all?
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> + int y;
>>> +}
>>>
>>> P0(int *x, int *y)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/MP+pooncerelease+poacquireonce.litmus b/tools/memory-model/litmus-tests/MP+pooncerelease+poacquireonce.litmus
>>> index d52c684..19f3e68 100644
>>> --- a/tools/memory-model/litmus-tests/MP+pooncerelease+poacquireonce.litmus
>>> +++ b/tools/memory-model/litmus-tests/MP+pooncerelease+poacquireonce.litmus
>>> @@ -8,7 +8,10 @@ C MP+pooncerelease+poacquireonce
>>> * pattern.
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> + int y;
>>> +}
>>>
>>> P0(int *x, int *y)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/MP+porevlocks.litmus b/tools/memory-model/litmus-tests/MP+porevlocks.litmus
>>> index 72c9276..4ac189a 100644
>>> --- a/tools/memory-model/litmus-tests/MP+porevlocks.litmus
>>> +++ b/tools/memory-model/litmus-tests/MP+porevlocks.litmus
>>> @@ -11,7 +11,11 @@ C MP+porevlocks
>>> * see all prior accesses by those other CPUs.
>>> *)
>>>
>>> -{}
>>> +{
>>> + spinlock_t mylock;
>>> + int x;
>>> + int y;
>>> +}
>>>
>>> P0(int *x, int *y, spinlock_t *mylock)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/R+fencembonceonces.litmus b/tools/memory-model/litmus-tests/R+fencembonceonces.litmus
>>> index 222a0b8..af9463b 100644
>>> --- a/tools/memory-model/litmus-tests/R+fencembonceonces.litmus
>>> +++ b/tools/memory-model/litmus-tests/R+fencembonceonces.litmus
>>> @@ -9,7 +9,10 @@ C R+fencembonceonces
>>> * cause the resulting test to be allowed.
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> + int y;
>>> +}
>>>
>>> P0(int *x, int *y)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/R+poonceonces.litmus b/tools/memory-model/litmus-tests/R+poonceonces.litmus
>>> index 5386f12..bcd5574e 100644
>>> --- a/tools/memory-model/litmus-tests/R+poonceonces.litmus
>>> +++ b/tools/memory-model/litmus-tests/R+poonceonces.litmus
>>> @@ -8,7 +8,10 @@ C R+poonceonces
>>> * store propagation delays.
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> + int y;
>>> +}
>>>
>>> P0(int *x, int *y)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/S+fencewmbonceonce+poacquireonce.litmus b/tools/memory-model/litmus-tests/S+fencewmbonceonce+poacquireonce.litmus
>>> index 1847982..c36341d 100644
>>> --- a/tools/memory-model/litmus-tests/S+fencewmbonceonce+poacquireonce.litmus
>>> +++ b/tools/memory-model/litmus-tests/S+fencewmbonceonce+poacquireonce.litmus
>>> @@ -7,7 +7,10 @@ C S+fencewmbonceonce+poacquireonce
>>> * store against a subsequent store?
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> + int y;
>>> +}
>>>
>>> P0(int *x, int *y)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/S+poonceonces.litmus b/tools/memory-model/litmus-tests/S+poonceonces.litmus
>>> index 8c9c2f8..7775c23 100644
>>> --- a/tools/memory-model/litmus-tests/S+poonceonces.litmus
>>> +++ b/tools/memory-model/litmus-tests/S+poonceonces.litmus
>>> @@ -9,7 +9,10 @@ C S+poonceonces
>>> * READ_ONCE(), is ordering preserved?
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> + int y;
>>> +}
>>>
>>> P0(int *x, int *y)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/SB+fencembonceonces.litmus b/tools/memory-model/litmus-tests/SB+fencembonceonces.litmus
>>> index ed5fff1..833cdfe 100644
>>> --- a/tools/memory-model/litmus-tests/SB+fencembonceonces.litmus
>>> +++ b/tools/memory-model/litmus-tests/SB+fencembonceonces.litmus
>>> @@ -9,7 +9,10 @@ C SB+fencembonceonces
>>> * suffice, but not much else.)
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> + int y;
>>> +}
>>>
>>> P0(int *x, int *y)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/SB+poonceonces.litmus b/tools/memory-model/litmus-tests/SB+poonceonces.litmus
>>> index 10d5507..c92211e 100644
>>> --- a/tools/memory-model/litmus-tests/SB+poonceonces.litmus
>>> +++ b/tools/memory-model/litmus-tests/SB+poonceonces.litmus
>>> @@ -8,7 +8,10 @@ C SB+poonceonces
>>> * variable that the preceding process reads.
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> + int y;
>>> +}
>>>
>>> P0(int *x, int *y)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/SB+rfionceonce-poonceonces.litmus b/tools/memory-model/litmus-tests/SB+rfionceonce-poonceonces.litmus
>>> index 04a1660..84344b4 100644
>>> --- a/tools/memory-model/litmus-tests/SB+rfionceonce-poonceonces.litmus
>>> +++ b/tools/memory-model/litmus-tests/SB+rfionceonce-poonceonces.litmus
>>> @@ -6,7 +6,10 @@ C SB+rfionceonce-poonceonces
>>> * This litmus test demonstrates that LKMM is not fully multicopy atomic.
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> + int y;
>>> +}
>>>
>>> P0(int *x, int *y)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/WRC+poonceonces+Once.litmus b/tools/memory-model/litmus-tests/WRC+poonceonces+Once.litmus
>>> index 6a2bc12..4314947 100644
>>> --- a/tools/memory-model/litmus-tests/WRC+poonceonces+Once.litmus
>>> +++ b/tools/memory-model/litmus-tests/WRC+poonceonces+Once.litmus
>>> @@ -8,7 +8,10 @@ C WRC+poonceonces+Once
>>> * test has no ordering at all.
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> + int y;
>>> +}
>>>
>>> P0(int *x)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/WRC+pooncerelease+fencermbonceonce+Once.litmus b/tools/memory-model/litmus-tests/WRC+pooncerelease+fencermbonceonce+Once.litmus
>>> index e994725..554999c 100644
>>> --- a/tools/memory-model/litmus-tests/WRC+pooncerelease+fencermbonceonce+Once.litmus
>>> +++ b/tools/memory-model/litmus-tests/WRC+pooncerelease+fencermbonceonce+Once.litmus
>>> @@ -10,7 +10,10 @@ C WRC+pooncerelease+fencermbonceonce+Once
>>> * is A-cumulative in LKMM.
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> + int y;
>>> +}
>>>
>>> P0(int *x)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/Z6.0+pooncelock+poonceLock+pombonce.litmus b/tools/memory-model/litmus-tests/Z6.0+pooncelock+poonceLock+pombonce.litmus
>>> index 415248f..265a95f 100644
>>> --- a/tools/memory-model/litmus-tests/Z6.0+pooncelock+poonceLock+pombonce.litmus
>>> +++ b/tools/memory-model/litmus-tests/Z6.0+pooncelock+poonceLock+pombonce.litmus
>>> @@ -9,7 +9,12 @@ C Z6.0+pooncelock+poonceLock+pombonce
>>> * by CPUs not holding that lock.
>>> *)
>>>
>>> -{}
>>> +{
>>> + spinlock_t mylock;
>>> + int x;
>>> + int y;
>>> + int z;
>>> +}
>>>
>>> P0(int *x, int *y, spinlock_t *mylock)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/Z6.0+pooncelock+pooncelock+pombonce.litmus b/tools/memory-model/litmus-tests/Z6.0+pooncelock+pooncelock+pombonce.litmus
>>> index 10a2aa0..0c9aea8 100644
>>> --- a/tools/memory-model/litmus-tests/Z6.0+pooncelock+pooncelock+pombonce.litmus
>>> +++ b/tools/memory-model/litmus-tests/Z6.0+pooncelock+pooncelock+pombonce.litmus
>>> @@ -8,7 +8,12 @@ C Z6.0+pooncelock+pooncelock+pombonce
>>> * seen as ordered by a third process not holding that lock.
>>> *)
>>>
>>> -{}
>>> +{
>>> + spinlock_t mylock;
>>> + int x;
>>> + int y;
>>> + int z;
>>> +}
>>>
>>> P0(int *x, int *y, spinlock_t *mylock)
>>> {
>>> diff --git a/tools/memory-model/litmus-tests/Z6.0+pooncerelease+poacquirerelease+fencembonceonce.litmus b/tools/memory-model/litmus-tests/Z6.0+pooncerelease+poacquirerelease+fencembonceonce.litmus
>>> index 88e70b8..661f9aa 100644
>>> --- a/tools/memory-model/litmus-tests/Z6.0+pooncerelease+poacquirerelease+fencembonceonce.litmus
>>> +++ b/tools/memory-model/litmus-tests/Z6.0+pooncerelease+poacquirerelease+fencembonceonce.litmus
>>> @@ -14,7 +14,11 @@ C Z6.0+pooncerelease+poacquirerelease+fencembonceonce
>>> * involving locking.)
>>> *)
>>>
>>> -{}
>>> +{
>>> + int x;
>>> + int y;
>>> + int z;
>>> +}
>>>
>>> P0(int *x, int *y)
>>> {
>>>
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