lastdragon/linux-kernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Resguardo inicial

Browse Source
This commit is contained in:
lastdragon
2026-09-06 12:53:21 -06:00
parent 662efe3c2a
commit ad2088d178
94853 changed files with 43200404 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
linux-7.2.3/Documentation/litmus-tests/atomic/cmpxchg-fail-unordered-1.litmus
+34
View File
@@ -0,0 +1,34 @@
C cmpxchg-fail-unordered-1
(*
* Result: Sometimes
*
* Demonstrate that a failing cmpxchg() operation does not act as a
* full barrier. (In contrast, a successful cmpxchg() does act as a
* full barrier.)
*)
{}
P0(int *x, int *y, int *z)
{
int r0;
int r1;
WRITE_ONCE(*x, 1);
r1 = cmpxchg(z, 1, 0);
r0 = READ_ONCE(*y);
}
P1(int *x, int *y, int *z)
{
int r0;
int r1;
WRITE_ONCE(*y, 1);
r1 = cmpxchg(z, 1, 0);
r0 = READ_ONCE(*x);
}
locations[0:r1;1:r1]
exists (0:r0=0 /\ 1:r0=0)