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Message-ID: <Pine.LNX.4.64.0708161743500.13267@kivilampi-30.cs.helsinki.fi>
Date: Thu, 16 Aug 2007 17:48:25 +0300 (EEST)
From: "Ilpo Järvinen" <ilpo.jarvinen@...sinki.fi>
To: Herbert Xu <herbert@...dor.apana.org.au>
cc: Paul Mackerras <paulus@...ba.org>,
Satyam Sharma <satyam@...radead.org>,
Christoph Lameter <clameter@....com>,
"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
Stefan Richter <stefanr@...6.in-berlin.de>,
Chris Snook <csnook@...hat.com>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
linux-arch@...r.kernel.org,
Linus Torvalds <torvalds@...ux-foundation.org>,
Netdev <netdev@...r.kernel.org>,
Andrew Morton <akpm@...ux-foundation.org>, ak@...e.de,
heiko.carstens@...ibm.com, David Miller <davem@...emloft.net>,
schwidefsky@...ibm.com, wensong@...ux-vs.org, horms@...ge.net.au,
wjiang@...ilience.com, cfriesen@...tel.com, zlynx@....org,
rpjday@...dspring.com, jesper.juhl@...il.com,
segher@...nel.crashing.org
Subject: Re: [PATCH 0/24] make atomic_read() behave consistently across all
architectures
On Thu, 16 Aug 2007, Herbert Xu wrote:
> We've been through that already. If it's a busy-wait it
> should use cpu_relax.
I looked around a bit by using some command lines and ended up wondering
if these are equal to busy-wait case (and should be fixed) or not:
./drivers/telephony/ixj.c
6674: while (atomic_read(&j->DSPWrite) > 0)
6675- atomic_dec(&j->DSPWrite);
...besides that, there are couple of more similar cases in the same file
(with braces)...
--
i.
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