From: Andrea Parri <parri.andrea@gmail.com>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: will@kernel.org, peterz@infradead.org, boqun.feng@gmail.com,
npiggin@gmail.com, dhowells@redhat.com, j.alglave@ucl.ac.uk,
luc.maranget@inria.fr, paulmck@kernel.org, akiyks@gmail.com,
dlustig@nvidia.com, joel@joelfernandes.org,
linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
hernan.poncedeleon@huaweicloud.com,
jonas.oberhauser@huaweicloud.com
Subject: Re: [PATCH] tools/memory-model: Document herd7 (internal) representation
Date: Mon, 27 May 2024 10:07:06 +0200 [thread overview]
Message-ID: <ZlQ/Ks3I2BYybykD@andrea> (raw)
In-Reply-To: <cf81a3c2-9754-4130-a67e-67d475678829@rowland.harvard.edu>
> It turns out the problem lies in the way lock.cat tries to calculate the
> rf relation for RU events (a spin_is_locked() that returns False). The
> method it uses amounts to requiring that such events must read from the
> lock's initial value or an LU event (a spin_unlock()) in a different
> thread. This clearly is wrong, and glaringly so in this litmus test
> since there are no other threads!
>
> A patch to fix the problem and reorganize the code a bit for greater
> readability is below. I'd appreciate it if people could try it out on
> various locking litmus tests in our archives.
Thanks for the quick solution, Alan. The results from our archives look
good.
Andrea
next prev parent reply other threads:[~2024-05-27 8:07 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-24 15:13 [PATCH] tools/memory-model: Document herd7 (internal) representation Andrea Parri
2024-05-24 15:37 ` Andrea Parri
2024-05-24 15:51 ` Alan Stern
2024-05-24 15:55 ` Andrea Parri
2024-05-24 20:04 ` Alan Stern
2024-05-25 19:37 ` Alan Stern
2024-05-27 8:07 ` Andrea Parri [this message]
2024-06-05 15:31 ` Alan Stern
2024-06-05 17:05 ` Andrea Parri
2024-06-05 19:26 ` Andrea Parri
2024-06-05 19:40 ` Alan Stern
2024-05-27 13:16 ` Jonas Oberhauser
2024-05-24 15:53 ` Alan Stern
2024-05-24 16:00 ` Andrea Parri
2024-05-27 12:25 ` Hernan Ponce de Leon
2024-05-27 13:14 ` Jonas Oberhauser
2024-05-27 13:32 ` Andrea Parri
2024-05-27 13:33 ` Alan Stern
2024-05-27 12:22 ` Hernan Ponce de Leon
2024-05-27 13:28 ` Andrea Parri
2024-05-27 13:37 ` Alan Stern
2024-05-27 13:47 ` Jonas Oberhauser
2024-05-27 13:40 ` Jonas Oberhauser
2024-05-28 17:58 ` Boqun Feng
2024-05-29 12:37 ` Jonas Oberhauser
2024-05-29 14:07 ` Alan Stern
2024-05-29 14:17 ` Jonas Oberhauser
2024-05-29 14:24 ` Alan Stern
2024-05-29 14:33 ` Jonas Oberhauser
2024-05-27 17:57 ` Hernan Ponce de Leon
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