From: Arjan van de Ven <arjan@infradead.org>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Ingo Molnar <mingo@elte.hu>, Jens Axboe <jens.axboe@oracle.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Rusty Russell <rusty@rustcorp.com.au>
Subject: Re: [PATCH RFC 3/3] x86: use mwait for trigger API
Date: Sat, 16 Aug 2008 10:44:04 -0700 [thread overview]
Message-ID: <20080816104404.070e0c14@infradead.org> (raw)
In-Reply-To: <48A70192.7020002@goop.org>
On Sat, 16 Aug 2008 09:34:26 -0700
Jeremy Fitzhardinge <jeremy@goop.org> wrote:
> If the cpu implements monitor/mwait, use it for the trigger API.
>
> TODO: work out if any mwait hints are going to be useful here.
monitor/mwait is rather really expensive.. are we really sure we want
to use this?
(from an Intel cpu perspective the answer is very likely no; but I don't
know what AMD does here)
--
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next prev parent reply other threads:[~2008-08-16 17:46 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-16 16:34 [PATCH RFC 3/3] x86: use mwait for trigger API Jeremy Fitzhardinge
2008-08-16 17:44 ` Arjan van de Ven [this message]
2008-08-16 21:50 ` Jeremy Fitzhardinge
2008-08-16 22:31 ` Arjan van de Ven
2008-08-28 12:25 ` Christian Borntraeger
2008-08-28 17:33 ` Jeremy Fitzhardinge
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