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

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Date: Fri, 24 May 2024 17:55:20 +0200
From: Andrea Parri <parri.andrea@...il.com>
To: Alan Stern <stern@...land.harvard.edu>
Cc: will@...nel.org, peterz@...radead.org, boqun.feng@...il.com,
	npiggin@...il.com, dhowells@...hat.com, j.alglave@....ac.uk,
	luc.maranget@...ia.fr, paulmck@...nel.org, akiyks@...il.com,
	dlustig@...dia.com, joel@...lfernandes.org,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	hernan.poncedeleon@...weicloud.com,
	jonas.oberhauser@...weicloud.com
Subject: Re: [PATCH] tools/memory-model: Document herd7 (internal)
 representation

> > $ cat T.litmus 
> > C T
> > 
> > {}
> > 
> > P0(spinlock_t *x)
> > {
> > 	int r0;
> > 
> > 	spin_lock(x);
> > 	spin_unlock(x);
> > 	r0 = spin_is_locked(x);
> > }
> 
> No "exists" clause?  Maybe that's your problem.

Nope, that doesn't seem to be it.  (Same result after adding one.)

  Andrea