From: peterz@infradead.org
To: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Matthew Wilcox <willy@infradead.org>,
Alan Stern <stern@rowland.harvard.edu>,
Dave Chinner <david@fromorbit.com>,
Eric Biggers <ebiggers@kernel.org>,
linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
linux-fsdevel@vger.kernel.org, Akira Yokosawa <akiyks@gmail.com>,
Andrea Parri <parri.andrea@gmail.com>,
Boqun Feng <boqun.feng@gmail.com>,
Daniel Lustig <dlustig@nvidia.com>,
"Darrick J . Wong" <darrick.wong@oracle.com>,
David Howells <dhowells@redhat.com>,
Jade Alglave <j.alglave@ucl.ac.uk>,
Luc Maranget <luc.maranget@inria.fr>,
Nicholas Piggin <npiggin@gmail.com>,
Will Deacon <will@kernel.org>
Subject: Re: [PATCH] tools/memory-model: document the "one-time init" pattern
Date: Mon, 20 Jul 2020 18:48:50 +0200 [thread overview]
Message-ID: <20200720164850.GF119549@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20200720160433.GQ9247@paulmck-ThinkPad-P72>
On Mon, Jul 20, 2020 at 09:04:34AM -0700, Paul E. McKenney wrote:
> 2. If we were to say "unlock" instead of "release", consistency
> would demand that we also say "lock" instead of "acquire".
> But "lock" is subtlely different than "acquire", and there is
> a history of people requesting further divergence.
This, acquire/release are RCpc, while (with the exception of Power)
LOCK/UNLOCK are RCsc.
( Or did we settle on RCtso for our release/acquire order? I have vague
memories of a long-ish thread, but seem to have forgotten the outcome,
if any. )
Lots of subtlety and head-aches right about there. Anyway, it would be
awesome if we can get Power into the RCsc locking camp :-)
next prev parent reply other threads:[~2020-07-20 16:48 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-17 4:44 [PATCH] tools/memory-model: document the "one-time init" pattern Eric Biggers
2020-07-17 5:49 ` Sedat Dilek
2020-07-17 12:35 ` Matthew Wilcox
2020-07-17 14:26 ` Alan Stern
2020-07-17 17:47 ` Matthew Wilcox
2020-07-17 17:51 ` Alan Stern
2020-07-18 1:02 ` Eric Biggers
2020-07-27 12:51 ` Matthew Wilcox
2020-07-17 21:05 ` Darrick J. Wong
2020-07-18 0:44 ` Darrick J. Wong
2020-07-18 1:38 ` Eric Biggers
2020-07-18 2:13 ` Matthew Wilcox
2020-07-18 5:28 ` Eric Biggers
2020-07-18 14:35 ` Alan Stern
2020-07-20 2:07 ` Dave Chinner
2020-07-20 9:00 ` Peter Zijlstra
2020-07-27 15:17 ` Alan Stern
2020-07-27 15:28 ` Matthew Wilcox
2020-07-27 16:01 ` Paul E. McKenney
2020-07-27 16:31 ` Alan Stern
2020-07-27 16:59 ` Matthew Wilcox
2020-07-27 19:13 ` Alan Stern
2020-07-17 20:53 ` Darrick J. Wong
2020-07-18 0:58 ` Eric Biggers
2020-07-18 1:25 ` Alan Stern
2020-07-18 1:40 ` Matthew Wilcox
2020-07-18 2:00 ` Dave Chinner
2020-07-18 14:21 ` Alan Stern
2020-07-18 2:00 ` Eric Biggers
2020-07-18 1:42 ` Dave Chinner
2020-07-18 14:08 ` Alan Stern
2020-07-20 1:33 ` Dave Chinner
2020-07-20 14:52 ` Alan Stern
2020-07-20 15:37 ` Darrick J. Wong
2020-07-20 15:39 ` Matthew Wilcox
2020-07-20 16:04 ` Paul E. McKenney
2020-07-20 16:48 ` peterz [this message]
2020-07-20 22:06 ` Paul E. McKenney
2020-07-20 16:12 ` Alan Stern
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