From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mikulas Patocka <mpatocka@redhat.com>,
Jens Axboe <axboe@kernel.dk>,
linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org
Subject: Re: [PATCH] percpu-rwsem: use barrier in unlock path
Date: Wed, 17 Oct 2012 10:56:35 +0100 [thread overview]
Message-ID: <20121017105635.7623af47@pyramind.ukuu.org.uk> (raw)
In-Reply-To: <CA+55aFyZ9uq_yfHn9PwpmM77X3xVd+xseEbjJmeCCqbFddtjWA@mail.gmail.com>
> a later stores, and stores are viewed in program order, so all x86
> stores have "release consistency" modulo the theoretical PPro bugs
> (that I don't think we actually ever saw in practice).
We did seem the for real. The PPro is on its way out however so I hardly
thing we care about optimising for that case.
Alan
next prev parent reply other threads:[~2012-10-17 9:51 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.64.1210151716310.10685@file.rdu.redhat.com>
[not found] ` <Pine.LNX.4.64.1210161924350.20581@file.rdu.redhat.com>
2012-10-17 2:23 ` [PATCH] percpu-rwsem: use barrier in unlock path Linus Torvalds
2012-10-17 5:58 ` Lai Jiangshan
2012-10-17 5:58 ` Lai Jiangshan
2012-10-17 15:07 ` Mikulas Patocka
2012-10-17 20:28 ` Steven Rostedt
2012-10-17 20:28 ` Steven Rostedt
2012-10-18 2:18 ` Lai Jiangshan
2012-10-18 4:13 ` Steven Rostedt
2012-10-18 16:17 ` Mikulas Patocka
2012-10-18 15:32 ` Mikulas Patocka
2012-10-18 19:56 ` Mikulas Patocka
2012-10-18 16:05 ` Mikulas Patocka
2012-10-17 9:56 ` Alan Cox [this message]
2012-10-18 16:00 ` Mikulas Patocka
2012-10-19 18:48 ` Linus Torvalds
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