tmakin/tegra-linux-noble
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

tools/memory-model: Label MP tests' producers and consumers

Browse Source 
This commit adds comments that label the MP tests' producer and consumer
processes, and also that label the "exists" clause as the bad outcome.

Reported-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Paul E. McKenney
2020-11-05 13:39:28 -08:00
parent acc4bdc55d
commit b6ff30849c
8 changed files with 24 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tools/memory-model/litmus-tests/MP+fencewmbonceonce+fencermbonceonce.litmus
+3 -3
View File
@@ -13,14 +13,14 @@ C MP+fencewmbonceonce+fencermbonceonce
int flag;
}
P0(int *buf, int *flag)
P0(int *buf, int *flag) // Producer
{
WRITE_ONCE(*buf, 1);
smp_wmb();
WRITE_ONCE(*flag, 1);
}
P1(int *buf, int *flag)
P1(int *buf, int *flag) // Consumer
{
int r0;
int r1;
@@ -30,4 +30,4 @@ P1(int *buf, int *flag)
r1 = READ_ONCE(*buf);
}
exists (1:r0=1 /\ 1:r1=0)
exists (1:r0=1 /\ 1:r1=0) (* Bad outcome. *)
tools/memory-model/litmus-tests/MP+onceassign+derefonce.litmus
+3 -3
View File
@@ -15,13 +15,13 @@ C MP+onceassign+derefonce
int y=0;
}
P0(int *x, int **p)
P0(int *x, int **p) // Producer
{
WRITE_ONCE(*x, 1);
rcu_assign_pointer(*p, x);
}
P1(int *x, int **p)
P1(int *x, int **p) // Consumer
{
int *r0;
int r1;
@@ -32,4 +32,4 @@ P1(int *x, int **p)
rcu_read_unlock();
}
exists (1:r0=x /\ 1:r1=0)
exists (1:r0=x /\ 1:r1=0) (* Bad outcome. *)
tools/memory-model/litmus-tests/MP+polockmbonce+poacquiresilsil.litmus
+3 -3
View File
@@ -15,7 +15,7 @@ C MP+polockmbonce+poacquiresilsil
int x;
}
P0(spinlock_t *lo, int *x)
P0(spinlock_t *lo, int *x) // Producer
{
spin_lock(lo);
smp_mb__after_spinlock();
@@ -23,7 +23,7 @@ P0(spinlock_t *lo, int *x)
spin_unlock(lo);
}
P1(spinlock_t *lo, int *x)
P1(spinlock_t *lo, int *x) // Consumer
{
int r1;
int r2;
@@ -34,4 +34,4 @@ P1(spinlock_t *lo, int *x)
r3 = spin_is_locked(lo);
}
exists (1:r1=1 /\ 1:r2=0 /\ 1:r3=1)
exists (1:r1=1 /\ 1:r2=0 /\ 1:r3=1) (* Bad outcome. *)
tools/memory-model/litmus-tests/MP+polockonce+poacquiresilsil.litmus
+3 -3
View File
@@ -15,14 +15,14 @@ C MP+polockonce+poacquiresilsil
int x;
}
P0(spinlock_t *lo, int *x)
P0(spinlock_t *lo, int *x) // Producer
{
spin_lock(lo);
WRITE_ONCE(*x, 1);
spin_unlock(lo);
}
P1(spinlock_t *lo, int *x)
P1(spinlock_t *lo, int *x) // Consumer
{
int r1;
int r2;
@@ -33,4 +33,4 @@ P1(spinlock_t *lo, int *x)
r3 = spin_is_locked(lo);
}
exists (1:r1=1 /\ 1:r2=0 /\ 1:r3=1)
exists (1:r1=1 /\ 1:r2=0 /\ 1:r3=1) (* Bad outcome. *)
tools/memory-model/litmus-tests/MP+polocks.litmus
+3 -3
View File
@@ -17,7 +17,7 @@ C MP+polocks
int flag;
}
P0(int *buf, int *flag, spinlock_t *mylock)
P0(int *buf, int *flag, spinlock_t *mylock) // Producer
{
WRITE_ONCE(*buf, 1);
spin_lock(mylock);
@@ -25,7 +25,7 @@ P0(int *buf, int *flag, spinlock_t *mylock)
spin_unlock(mylock);
}
P1(int *buf, int *flag, spinlock_t *mylock)
P1(int *buf, int *flag, spinlock_t *mylock) // Consumer
{
int r0;
int r1;
@@ -36,4 +36,4 @@ P1(int *buf, int *flag, spinlock_t *mylock)
r1 = READ_ONCE(*buf);
}
exists (1:r0=1 /\ 1:r1=0)
exists (1:r0=1 /\ 1:r1=0) (* Bad outcome. *)
tools/memory-model/litmus-tests/MP+poonceonces.litmus
+3 -3
View File
@@ -12,13 +12,13 @@ C MP+poonceonces
int flag;
}
P0(int *buf, int *flag)
P0(int *buf, int *flag) // Producer
{
WRITE_ONCE(*buf, 1);
WRITE_ONCE(*flag, 1);
}
P1(int *buf, int *flag)
P1(int *buf, int *flag) // Consumer
{
int r0;
int r1;
@@ -27,4 +27,4 @@ P1(int *buf, int *flag)
r1 = READ_ONCE(*buf);
}
exists (1:r0=1 /\ 1:r1=0)
exists (1:r0=1 /\ 1:r1=0) (* Bad outcome. *)
tools/memory-model/litmus-tests/MP+pooncerelease+poacquireonce.litmus
+3 -3
View File
@@ -13,13 +13,13 @@ C MP+pooncerelease+poacquireonce
int flag;
}
P0(int *buf, int *flag)
P0(int *buf, int *flag) // Producer
{
WRITE_ONCE(*buf, 1);
smp_store_release(flag, 1);
}
P1(int *buf, int *flag)
P1(int *buf, int *flag) // Consumer
{
int r0;
int r1;
@@ -28,4 +28,4 @@ P1(int *buf, int *flag)
r1 = READ_ONCE(*buf);
}
exists (1:r0=1 /\ 1:r1=0)
exists (1:r0=1 /\ 1:r1=0) (* Bad outcome. *)
tools/memory-model/litmus-tests/MP+porevlocks.litmus
+3 -3
View File
@@ -17,7 +17,7 @@ C MP+porevlocks
int flag;
}
P0(int *buf, int *flag, spinlock_t *mylock)
P0(int *buf, int *flag, spinlock_t *mylock) // Consumer
{
int r0;
int r1;
@@ -28,7 +28,7 @@ P0(int *buf, int *flag, spinlock_t *mylock)
spin_unlock(mylock);
}
P1(int *buf, int *flag, spinlock_t *mylock)
P1(int *buf, int *flag, spinlock_t *mylock) // Producer
{
spin_lock(mylock);
WRITE_ONCE(*buf, 1);
@@ -36,4 +36,4 @@ P1(int *buf, int *flag, spinlock_t *mylock)
WRITE_ONCE(*flag, 1);
}
exists (0:r0=1 /\ 0:r1=0)
exists (0:r0=1 /\ 0:r1=0) (* Bad outcome. *)