Re: [PATCH] tools/memory-model: Document herd7 (internal) representation

[Jonas Oberhauser]

Am 5/24/2024 um 5:37 PM schrieb Andrea Parri:
> > - While checking the information below using herd7, I've observed some
> >    "strange" behavior with spin_is_locked() (perhaps, unsurprisingly...);
> >    IAC, that's also excluded from this table/submission.
>
> For completeness, the behavior in question:
>
> $ cat T.litmus
> C T
>
> {}
>
> P0(spinlock_t *x)
> {
> 	int r0;
>
> 	spin_lock(x);
> 	spin_unlock(x);
> 	r0 = spin_is_locked(x);
> }

Since 0 executions are generated, possibly herd things there's a deadlock.

Could be either a problem with the deadlock definition, or do you need 
to initialize the lock somehow?