mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-16 00:34:20 +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>
26 lines
324 B
Plaintext
26 lines
324 B
Plaintext
C CoWR+poonceonce+Once
|
|
|
|
(*
|
|
* Result: Never
|
|
*
|
|
* Test of write-read coherence, that is, whether or not a write to a
|
|
* given variable and a later read from that same variable are ordered.
|
|
*)
|
|
|
|
{}
|
|
|
|
P0(int *x)
|
|
{
|
|
int r0;
|
|
|
|
WRITE_ONCE(*x, 1);
|
|
r0 = READ_ONCE(*x);
|
|
}
|
|
|
|
P1(int *x)
|
|
{
|
|
WRITE_ONCE(*x, 2);
|
|
}
|
|
|
|
exists (x=1 /\ 0:r0=2)
|