From: Arjan van de Ven <arjanv@redhat.com>
To: Chris Wright <chrisw@osdl.org>
Cc: linux-kernel@vger.kernel.org, chas@cmf.nrl.navy.mil, torvalds@osdl.org
Subject: Re: [PATCH 2/13] use cpu_relax() in busy loop
Date: Fri, 19 Sep 2003 09:33:50 +0200 [thread overview]
Message-ID: <1063956829.5394.1.camel@laptop.fenrus.com> (raw)
In-Reply-To: <20030918162748.F16499@osdlab.pdx.osdl.net>
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On Fri, 2003-09-19 at 01:27, Chris Wright wrote:
> [PATCH 2/13] use cpu_relax() in busy loop
>
> Replace busy loop nop with cpu_relax().
>
> ===== drivers/atm/fore200e.c 1.19 vs edited =====
> --- 1.19/drivers/atm/fore200e.c Tue Sep 2 11:07:59 2003
> +++ edited/drivers/atm/fore200e.c Thu Sep 18 10:42:17 2003
> @@ -248,7 +248,8 @@
> fore200e_spin(int msecs)
> {
> unsigned long timeout = jiffies + MSECS(msecs);
> - while (time_before(jiffies, timeout));
> + while (time_before(jiffies, timeout))
> + cpu_relax();
> }
ehmmm how about making this use mdelay instead ?
(not to speak of maybe making it sleep, but that's a less obvious
transformation)
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next prev parent reply other threads:[~2003-09-19 7:36 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-18 23:25 [PATCH 1/13] " Chris Wright
2003-09-18 23:27 ` [PATCH 2/13] " Chris Wright
2003-09-18 23:29 ` [PATCH 3/13] " Chris Wright
2003-09-18 23:31 ` [PATCH 4/13] " Chris Wright
2003-09-18 23:33 ` [PATCH 5/13] " Chris Wright
2003-09-18 23:34 ` [PATCH 6/13] " Chris Wright
2003-09-18 23:35 ` [PATCH 7/13] " Chris Wright
2003-09-18 23:36 ` [PATCH 8/13] " Chris Wright
2003-09-18 23:37 ` [PATCH 9/13] " Chris Wright
2003-09-18 23:40 ` [PATCH 10/13] " Chris Wright
2003-09-18 23:41 ` [PATCH 11/13] " Chris Wright
2003-09-18 23:43 ` [PATCH 12/13] " Chris Wright
2003-09-18 23:46 ` [PATCH 13/13] " Chris Wright
2003-09-20 7:37 ` [PATCH 9/13] " David S. Miller
2003-09-19 7:37 ` [PATCH 7/13] " Arjan van de Ven
2003-09-19 19:49 ` Chris Wright
2003-09-19 7:34 ` [PATCH 4/13] " Arjan van de Ven
2003-09-19 19:48 ` Chris Wright
2003-09-19 19:54 ` Arjan van de Ven
2003-09-19 7:33 ` Arjan van de Ven [this message]
2003-09-19 19:49 ` [PATCH 2/13] " Chris Wright
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