forked from Minki/linux
5c587f9b9c
This is a revert of commit 1947bfcf81 ("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@kernel.org>
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
38 lines
598 B
Plaintext
38 lines
598 B
Plaintext
C ISA2+poonceonces
|
|
|
|
(*
|
|
* Result: Sometimes
|
|
*
|
|
* Given a release-acquire chain ordering the first process's store
|
|
* against the last process's load, is ordering preserved if all of the
|
|
* smp_store_release() invocations are replaced by WRITE_ONCE() and all
|
|
* of the smp_load_acquire() invocations are replaced by READ_ONCE()?
|
|
*)
|
|
|
|
{}
|
|
|
|
P0(int *x, int *y)
|
|
{
|
|
WRITE_ONCE(*x, 1);
|
|
WRITE_ONCE(*y, 1);
|
|
}
|
|
|
|
P1(int *y, int *z)
|
|
{
|
|
int r0;
|
|
|
|
r0 = READ_ONCE(*y);
|
|
WRITE_ONCE(*z, 1);
|
|
}
|
|
|
|
P2(int *x, int *z)
|
|
{
|
|
int r0;
|
|
int r1;
|
|
|
|
r0 = READ_ONCE(*z);
|
|
r1 = READ_ONCE(*x);
|
|
}
|
|
|
|
exists (1:r0=1 /\ 2:r0=1 /\ 2:r1=0)
|