From: Robert Love <rml@novell.com>
To: Joseph Seigh <jseigh_02@xemaps.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: What does atomic_read actually do?
Date: Sun, 19 Dec 2004 17:21:06 -0500 [thread overview]
Message-ID: <1103494866.6052.354.camel@localhost> (raw)
In-Reply-To: <opsi707edhs29e3l@grunion>
On Sat, 2004-12-18 at 15:43 -0500, Joseph Seigh wrote:
> > it does so on *x86
>
> Is this documented for gcc anywhere? Just because it does so doesn't
> mean it's guaranteed.
Listen to what Arjan is saying: It is not a compiler feature. x86
already guarantees that an aligned word-size read is atomic in the
nothing-can-interleave sense.
Robert Love
next prev parent reply other threads:[~2004-12-19 22:19 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-18 16:23 What does atomic_read actually do? Joseph Seigh
2004-12-18 17:11 ` Paolo Ornati
2004-12-18 18:14 ` Joseph Seigh
2004-12-18 18:34 ` Arjan van de Ven
2004-12-18 19:20 ` Joseph Seigh
2004-12-18 19:39 ` Joe Korty
2004-12-18 19:54 ` Arjan van de Ven
2004-12-18 20:43 ` Joseph Seigh
2004-12-18 21:03 ` Brian Gerst
2004-12-19 22:21 ` Robert Love [this message]
2004-12-19 23:50 ` Joseph Seigh
2004-12-20 11:51 ` Arjan van de Ven
2004-12-20 12:52 ` Andrea Arcangeli
2004-12-20 20:51 ` Joseph Seigh
2004-12-18 20:47 ` Brian Gerst
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