From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: David Miller <davem@davemloft.net>
Cc: eric.lemoine@gmail.com, netdev@vger.kernel.org
Subject: Re: [patch sungem] improved locking
Date: Wed, 29 Nov 2006 11:19:34 +1100 [thread overview]
Message-ID: <1164759574.5350.115.camel@localhost.localdomain> (raw)
In-Reply-To: <20061128.154350.02290212.davem@davemloft.net>
On Tue, 2006-11-28 at 15:43 -0800, David Miller wrote:
> At least in theory the atomic + any necessary memory barriers
> would be cheaper than the extra PIO read we need otherwise.
Yes, IO reads are generally the worst case scenarios even on machines
with fairly slow locks.
Ben.
next prev parent reply other threads:[~2006-11-29 0:19 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-09 21:33 [patch sungem] improved locking Eric Lemoine
2006-11-09 23:04 ` David Miller
2006-11-10 13:28 ` Eric Lemoine
2006-11-10 20:37 ` Benjamin Herrenschmidt
2006-11-10 20:42 ` David Miller
2006-11-12 23:11 ` Eric Lemoine
2006-11-14 0:46 ` David Miller
2006-11-14 7:28 ` Eric Lemoine
2006-11-14 7:44 ` David Miller
2006-11-14 21:54 ` Eric Lemoine
2006-11-28 22:49 ` David Miller
2006-11-28 22:57 ` Benjamin Herrenschmidt
2006-11-28 23:43 ` David Miller
2006-11-29 0:19 ` Benjamin Herrenschmidt [this message]
2006-11-29 10:16 ` Eric Lemoine
2006-11-29 10:56 ` Eric Lemoine
2006-11-29 22:37 ` Eric Lemoine
2006-12-13 3:12 ` Benjamin Herrenschmidt
2006-12-13 3:24 ` Benjamin Herrenschmidt
2006-12-13 4:03 ` David Miller
2006-12-13 4:07 ` Benjamin Herrenschmidt
2006-12-29 5:05 ` David Miller
2006-12-29 21:36 ` Benjamin Herrenschmidt
2006-12-29 23:20 ` David Miller
2006-12-12 1:43 ` David Miller
2006-12-12 5:33 ` Eric Lemoine
2006-12-12 5:36 ` Benjamin Herrenschmidt
2006-12-12 5:49 ` Eric Lemoine
2006-12-15 0:59 ` Benjamin Herrenschmidt
2006-12-18 1:15 ` David Miller
2006-12-18 1:41 ` Benjamin Herrenschmidt
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