xref: /kernel/linux/linux-5.10/tools/memory-model/litmus-tests/LB+poonceonces.litmus (revision 8c2ecf20)
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18c2ecf20Sopenharmony_ciC LB+poonceonces
28c2ecf20Sopenharmony_ci
38c2ecf20Sopenharmony_ci(*
48c2ecf20Sopenharmony_ci * Result: Sometimes
58c2ecf20Sopenharmony_ci *
68c2ecf20Sopenharmony_ci * Can the counter-intuitive outcome for the load-buffering pattern
78c2ecf20Sopenharmony_ci * be prevented even with no explicit ordering?
88c2ecf20Sopenharmony_ci *)
98c2ecf20Sopenharmony_ci
108c2ecf20Sopenharmony_ci{}
118c2ecf20Sopenharmony_ci
128c2ecf20Sopenharmony_ciP0(int *x, int *y)
138c2ecf20Sopenharmony_ci{
148c2ecf20Sopenharmony_ci	int r0;
158c2ecf20Sopenharmony_ci
168c2ecf20Sopenharmony_ci	r0 = READ_ONCE(*x);
178c2ecf20Sopenharmony_ci	WRITE_ONCE(*y, 1);
188c2ecf20Sopenharmony_ci}
198c2ecf20Sopenharmony_ci
208c2ecf20Sopenharmony_ciP1(int *x, int *y)
218c2ecf20Sopenharmony_ci{
228c2ecf20Sopenharmony_ci	int r0;
238c2ecf20Sopenharmony_ci
248c2ecf20Sopenharmony_ci	r0 = READ_ONCE(*y);
258c2ecf20Sopenharmony_ci	WRITE_ONCE(*x, 1);
268c2ecf20Sopenharmony_ci}
278c2ecf20Sopenharmony_ci
288c2ecf20Sopenharmony_ciexists (0:r0=1 /\ 1:r0=1)
29

Indexes created Thu Nov 07 10:32:03 CST 2024