From: Michael Schnell <mschnell@lumino.de>
To: "Leonidas ." <leonidas137@gmail.com>
Cc: Stefan Richter <stefanr@s5r6.in-berlin.de>,
Noah Watkins <noah@noahdesu.com>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: Difference between atomic operations and memory barriers
Date: Tue, 27 Oct 2009 11:21:12 +0100 [thread overview]
Message-ID: <4AE6C998.9040405@lumino.de> (raw)
In-Reply-To: <f22d86810910261205r232db5d4re97a54827c7adab3@mail.gmail.com>
Leonidas . wrote:
>
> any_t *ptr = something;
>
> is always atomic even on SMPs without using locks, barriers then my
> doubt is cleared. Thanks.
I assume that this only holds if the pointer (not the thing it points
to) is denoted as volatile.
-Michael
next prev parent reply other threads:[~2009-10-27 10:21 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-26 17:19 Difference between atomic operations and memory barriers Leonidas .
[not found] ` <7ADB5FD7-9C97-4987-BC20-997258B25FD2@noahdesu.com>
2009-10-26 18:22 ` Leonidas .
2009-10-26 18:54 ` Chris Friesen
2009-10-26 19:00 ` Leonidas .
2009-10-26 19:07 ` Noah Watkins
2009-10-26 19:34 ` Stefan Richter
2009-10-26 19:42 ` Noah Watkins
2009-10-27 11:51 ` Valdis.Kletnieks
2009-10-28 10:00 ` Boaz Harrosh
2009-10-28 13:26 ` Valdis.Kletnieks
2009-10-26 19:00 ` Stefan Richter
2009-10-26 19:05 ` Leonidas .
2009-10-27 10:21 ` Michael Schnell [this message]
2009-10-27 10:23 ` Leonidas .
2009-10-27 11:01 ` Michael Schnell
2009-10-27 14:57 ` Stefan Richter
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