mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-21 10:05:00 +08:00
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>
30 lines
412 B
Plaintext
30 lines
412 B
Plaintext
C LB+poacquireonce+pooncerelease
|
|
|
|
(*
|
|
* Result: Never
|
|
*
|
|
* Does a release-acquire pair suffice for the load-buffering litmus
|
|
* test, where each process reads from one of two variables then writes
|
|
* to the other?
|
|
*)
|
|
|
|
{}
|
|
|
|
P0(int *x, int *y)
|
|
{
|
|
int r0;
|
|
|
|
r0 = READ_ONCE(*x);
|
|
smp_store_release(y, 1);
|
|
}
|
|
|
|
P1(int *x, int *y)
|
|
{
|
|
int r0;
|
|
|
|
r0 = smp_load_acquire(y);
|
|
WRITE_ONCE(*x, 1);
|
|
}
|
|
|
|
exists (0:r0=1 /\ 1:r0=1)
|