From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>,
Andrew Morton <akpm@linux-foundation.org>,
Nigel Cunningham <nigel@nigel.suspend2.net>,
Uli Luckas <u.luckas@road.de>, Oleg Nesterov <oleg@tv-sign.ru>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH -mm] PM: Prevent frozen user mode helpers from failing the freezing of tasks (rev. 2)
Date: Tue, 03 Jul 2007 15:31:26 +1000 [thread overview]
Message-ID: <1183440686.10386.68.camel@localhost.localdomain> (raw)
In-Reply-To: <20070626084854.GA4594@elf.ucw.cz>
On Tue, 2007-06-26 at 10:48 +0200, Pavel Machek wrote:
> > The problem, as far as I understand it, is that the instructions can
> get
> > reordered if there are no barriers in there.
>
> Are you sure? I thought atomic variables have barrirers built-in.
bzzzt. they don't.
Ben.
next prev parent reply other threads:[~2007-07-03 5:44 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-25 21:52 [PATCH -mm] PM: Prevent frozen user mode helpers from failing the freezing of tasks (rev. 2) Rafael J. Wysocki
2007-06-25 21:50 ` Nigel Cunningham
2007-06-25 21:55 ` Pavel Machek
2007-06-25 22:27 ` Rafael J. Wysocki
2007-06-26 8:48 ` Pavel Machek
2007-07-03 5:31 ` Benjamin Herrenschmidt [this message]
2007-06-26 12:02 ` Oleg Nesterov
2007-07-03 5:30 ` Benjamin Herrenschmidt
2007-07-03 13:19 ` Rafael J. Wysocki
2007-07-03 13:36 ` Rafael J. Wysocki
2007-07-03 17:45 ` Oleg Nesterov
2007-07-03 21:19 ` Benjamin Herrenschmidt
2007-06-26 8:07 ` Uli Luckas
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