[PATCH tip/core/rcu 2/3] tools/memory-model: Remove redundant initialization in litmus tests

From: paulmck
Date: Wed Jan 06 2021 - 12:37:31 EST

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From: Akira Yokosawa <akiyks@xxxxxxxxx>

This is a revert of commit 1947bfcf81a9 ("tools/memory-model: Add types
to litmus tests") with conflict resolutions.

klitmus7 [1] is aware of default types of "int" and "int*".
It accepts litmus tests for herd7 without extra type info unless
non-"int" variables are referenced by an "exists", "locations",
or "filter" directive.

[1]: Tested with klitmus7 versions 7.49 or later.

Suggested-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
Signed-off-by: Akira Yokosawa <akiyks@xxxxxxxxx>
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
---
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 | 4 +---
.../litmus-tests/MP+polockmbonce+poacquiresilsil.litmus | 5 +----
.../memory-model/litmus-tests/MP+polockonce+poacquiresilsil.litmus | 5 +----
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, 32 insertions(+), 134 deletions(-)

diff --git a/tools/memory-model/litmus-tests/CoRR+poonceonce+Once.litmus b/tools/memory-model/litmus-tests/CoRR+poonceonce+Once.litmus
index 772544f..967f9f2 100644
--- a/tools/memory-model/litmus-tests/CoRR+poonceonce+Once.litmus
+++ b/tools/memory-model/litmus-tests/CoRR+poonceonce+Once.litmus
@@ -7,9 +7,7 @@ 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 5faae98..4635739 100644
--- a/tools/memory-model/litmus-tests/CoRW+poonceonce+Once.litmus
+++ b/tools/memory-model/litmus-tests/CoRW+poonceonce+Once.litmus
@@ -7,9 +7,7 @@ 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 77c9cc9..bb068c9 100644
--- a/tools/memory-model/litmus-tests/CoWR+poonceonce+Once.litmus
+++ b/tools/memory-model/litmus-tests/CoWR+poonceonce+Once.litmus
@@ -7,9 +7,7 @@ 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 85ef746..0d9f0a9 100644
--- a/tools/memory-model/litmus-tests/CoWW+poonceonce.litmus
+++ b/tools/memory-model/litmus-tests/CoWW+poonceonce.litmus
@@ -7,9 +7,7 @@ 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 87aa900..e729d27 100644
--- a/tools/memory-model/litmus-tests/IRIW+fencembonceonces+OnceOnce.litmus
+++ b/tools/memory-model/litmus-tests/IRIW+fencembonceonces+OnceOnce.litmus
@@ -10,10 +10,7 @@ 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 f84022d..4b54dd6 100644
--- a/tools/memory-model/litmus-tests/IRIW+poonceonces+OnceOnce.litmus
+++ b/tools/memory-model/litmus-tests/IRIW+poonceonces+OnceOnce.litmus
@@ -10,10 +10,7 @@ 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 398f624..094d58d 100644
--- a/tools/memory-model/litmus-tests/ISA2+pooncelock+pooncelock+pombonce.litmus
+++ b/tools/memory-model/litmus-tests/ISA2+pooncelock+pooncelock+pombonce.litmus
@@ -7,12 +7,7 @@ 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 212a432..b321aa6 100644
--- a/tools/memory-model/litmus-tests/ISA2+poonceonces.litmus
+++ b/tools/memory-model/litmus-tests/ISA2+poonceonces.litmus
@@ -9,11 +9,7 @@ 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 7afd856..025b046 100644
--- a/tools/memory-model/litmus-tests/ISA2+pooncerelease+poacquirerelease+poacquireonce.litmus
+++ b/tools/memory-model/litmus-tests/ISA2+pooncerelease+poacquirerelease+poacquireonce.litmus
@@ -11,11 +11,7 @@ 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 c8a93c7..4727f5a 100644
--- a/tools/memory-model/litmus-tests/LB+fencembonceonce+ctrlonceonce.litmus
+++ b/tools/memory-model/litmus-tests/LB+fencembonceonce+ctrlonceonce.litmus
@@ -11,10 +11,7 @@ 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 2fa0295..07b9904 100644
--- a/tools/memory-model/litmus-tests/LB+poacquireonce+pooncerelease.litmus
+++ b/tools/memory-model/litmus-tests/LB+poacquireonce+pooncerelease.litmus
@@ -8,10 +8,7 @@ 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 2107306..74c49cb 100644
--- a/tools/memory-model/litmus-tests/LB+poonceonces.litmus
+++ b/tools/memory-model/litmus-tests/LB+poonceonces.litmus
@@ -7,10 +7,7 @@ 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 c5c168d..f8ca122 100644
--- a/tools/memory-model/litmus-tests/MP+fencewmbonceonce+fencermbonceonce.litmus
+++ b/tools/memory-model/litmus-tests/MP+fencewmbonceonce+fencermbonceonce.litmus
@@ -8,10 +8,7 @@ C MP+fencewmbonceonce+fencermbonceonce
* is usually better to use smp_store_release() and smp_load_acquire().
*)

-{
- int buf;
- int flag;
-}
+{}

P0(int *buf, int *flag) // Producer
{
diff --git a/tools/memory-model/litmus-tests/MP+onceassign+derefonce.litmus b/tools/memory-model/litmus-tests/MP+onceassign+derefonce.litmus
index 20ff626..d84160b 100644
--- a/tools/memory-model/litmus-tests/MP+onceassign+derefonce.litmus
+++ b/tools/memory-model/litmus-tests/MP+onceassign+derefonce.litmus
@@ -10,9 +10,7 @@ C MP+onceassign+derefonce
*)

{
- int *p=y;
- int x;
- int y=0;
+p=y;
}

P0(int *x, int **p) // Producer
diff --git a/tools/memory-model/litmus-tests/MP+polockmbonce+poacquiresilsil.litmus b/tools/memory-model/litmus-tests/MP+polockmbonce+poacquiresilsil.litmus
index 153917a..ba91cc6 100644
--- a/tools/memory-model/litmus-tests/MP+polockmbonce+poacquiresilsil.litmus
+++ b/tools/memory-model/litmus-tests/MP+polockmbonce+poacquiresilsil.litmus
@@ -10,10 +10,7 @@ C MP+polockmbonce+poacquiresilsil
* executed before the lock was acquired (loosely speaking).
*)

-{
- spinlock_t lo;
- int x;
-}
+{}

P0(spinlock_t *lo, int *x) // Producer
{
diff --git a/tools/memory-model/litmus-tests/MP+polockonce+poacquiresilsil.litmus b/tools/memory-model/litmus-tests/MP+polockonce+poacquiresilsil.litmus
index aad6439..a5ea3ed 100644
--- a/tools/memory-model/litmus-tests/MP+polockonce+poacquiresilsil.litmus
+++ b/tools/memory-model/litmus-tests/MP+polockonce+poacquiresilsil.litmus
@@ -10,10 +10,7 @@ C MP+polockonce+poacquiresilsil
* speaking).
*)

-{
- spinlock_t lo;
- int x;
-}
+{}

P0(spinlock_t *lo, int *x) // Producer
{
diff --git a/tools/memory-model/litmus-tests/MP+polocks.litmus b/tools/memory-model/litmus-tests/MP+polocks.litmus
index 21cbca6..e6af05f 100644
--- a/tools/memory-model/litmus-tests/MP+polocks.litmus
+++ b/tools/memory-model/litmus-tests/MP+polocks.litmus
@@ -11,11 +11,7 @@ C MP+polocks
* to see all prior accesses by those other CPUs.
*)

-{
- spinlock_t mylock;
- int buf;
- int flag;
-}
+{}

P0(int *buf, int *flag, spinlock_t *mylock) // Producer
{
diff --git a/tools/memory-model/litmus-tests/MP+poonceonces.litmus b/tools/memory-model/litmus-tests/MP+poonceonces.litmus
index 9f9769d..ba9c99c6 100644
--- a/tools/memory-model/litmus-tests/MP+poonceonces.litmus
+++ b/tools/memory-model/litmus-tests/MP+poonceonces.litmus
@@ -7,10 +7,7 @@ C MP+poonceonces
* no ordering at all?
*)

-{
- int buf;
- int flag;
-}
+{}

P0(int *buf, int *flag) // Producer
{
diff --git a/tools/memory-model/litmus-tests/MP+pooncerelease+poacquireonce.litmus b/tools/memory-model/litmus-tests/MP+pooncerelease+poacquireonce.litmus
index cbe28e7..f174bfe 100644
--- a/tools/memory-model/litmus-tests/MP+pooncerelease+poacquireonce.litmus
+++ b/tools/memory-model/litmus-tests/MP+pooncerelease+poacquireonce.litmus
@@ -8,10 +8,7 @@ C MP+pooncerelease+poacquireonce
* pattern.
*)

-{
- int buf;
- int flag;
-}
+{}

P0(int *buf, int *flag) // Producer
{
diff --git a/tools/memory-model/litmus-tests/MP+porevlocks.litmus b/tools/memory-model/litmus-tests/MP+porevlocks.litmus
index 012041b..b959914 100644
--- a/tools/memory-model/litmus-tests/MP+porevlocks.litmus
+++ b/tools/memory-model/litmus-tests/MP+porevlocks.litmus
@@ -11,11 +11,7 @@ C MP+porevlocks
* see all prior accesses by those other CPUs.
*)

-{
- spinlock_t mylock;
- int buf;
- int flag;
-}
+{}

P0(int *buf, int *flag, spinlock_t *mylock) // Consumer
{
diff --git a/tools/memory-model/litmus-tests/R+fencembonceonces.litmus b/tools/memory-model/litmus-tests/R+fencembonceonces.litmus
index af9463b..222a0b8 100644
--- a/tools/memory-model/litmus-tests/R+fencembonceonces.litmus
+++ b/tools/memory-model/litmus-tests/R+fencembonceonces.litmus
@@ -9,10 +9,7 @@ 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 bcd5574e..5386f12 100644
--- a/tools/memory-model/litmus-tests/R+poonceonces.litmus
+++ b/tools/memory-model/litmus-tests/R+poonceonces.litmus
@@ -8,10 +8,7 @@ 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 c36341d..1847982 100644
--- a/tools/memory-model/litmus-tests/S+fencewmbonceonce+poacquireonce.litmus
+++ b/tools/memory-model/litmus-tests/S+fencewmbonceonce+poacquireonce.litmus
@@ -7,10 +7,7 @@ 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 7775c23..8c9c2f8 100644
--- a/tools/memory-model/litmus-tests/S+poonceonces.litmus
+++ b/tools/memory-model/litmus-tests/S+poonceonces.litmus
@@ -9,10 +9,7 @@ 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 833cdfe..ed5fff1 100644
--- a/tools/memory-model/litmus-tests/SB+fencembonceonces.litmus
+++ b/tools/memory-model/litmus-tests/SB+fencembonceonces.litmus
@@ -9,10 +9,7 @@ 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 c92211e..10d5507 100644
--- a/tools/memory-model/litmus-tests/SB+poonceonces.litmus
+++ b/tools/memory-model/litmus-tests/SB+poonceonces.litmus
@@ -8,10 +8,7 @@ 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 84344b4..04a1660 100644
--- a/tools/memory-model/litmus-tests/SB+rfionceonce-poonceonces.litmus
+++ b/tools/memory-model/litmus-tests/SB+rfionceonce-poonceonces.litmus
@@ -6,10 +6,7 @@ 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 4314947..6a2bc12 100644
--- a/tools/memory-model/litmus-tests/WRC+poonceonces+Once.litmus
+++ b/tools/memory-model/litmus-tests/WRC+poonceonces+Once.litmus
@@ -8,10 +8,7 @@ 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 554999c..e994725 100644
--- a/tools/memory-model/litmus-tests/WRC+pooncerelease+fencermbonceonce+Once.litmus
+++ b/tools/memory-model/litmus-tests/WRC+pooncerelease+fencermbonceonce+Once.litmus
@@ -10,10 +10,7 @@ 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 265a95f..415248f 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
@@ -9,12 +9,7 @@ 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 0c9aea8..10a2aa0 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
@@ -8,12 +8,7 @@ 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 661f9aa..88e70b8 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
@@ -14,11 +14,7 @@ C Z6.0+pooncerelease+poacquirerelease+fencembonceonce
* involving locking.)
*)

-{
- int x;
- int y;
- int z;
-}
+{}

P0(int *x, int *y)
{
--
2.9.5

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