From: Ingo Molnar <mingo@elte.hu>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Esben Nielsen <simlo@phys.au.dk>, linux-kernel@vger.kernel.org
Subject: Re: PI patch against 2.6.16-rt9
Date: Wed, 29 Mar 2006 14:29:59 +0200 [thread overview]
Message-ID: <20060329122959.GA5175@elte.hu> (raw)
In-Reply-To: <1143590363.5344.257.camel@localhost.localdomain>
* Thomas Gleixner <tglx@linutronix.de> wrote:
> Btw, your get/put_task proposal adds two atomic ops. Atomic ops are
> implicit memory barriers and therefor you add two extra slow downs
> into the non conflict case.
i'm not that worried about this - the atomic ops are for already cached
cachelines, any sane CPU ought to execute them close to full speed.
(x86-ish cpus certainly do)
Ingo
prev parent reply other threads:[~2006-03-29 12:32 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-26 23:42 PI patch against 2.6.16-rt9 Esben Nielsen
2006-03-26 23:47 ` Ingo Molnar
2006-03-27 0:07 ` Esben Nielsen
2006-03-27 0:11 ` Esben Nielsen
2006-03-27 0:21 ` Ingo Molnar
2006-03-27 15:00 ` Esben Nielsen
2006-03-27 23:05 ` Esben Nielsen
2006-03-28 21:02 ` Ingo Molnar
2006-03-28 20:55 ` Ingo Molnar
2006-03-28 21:17 ` Esben Nielsen
2006-03-28 21:24 ` Ingo Molnar
2006-03-28 22:51 ` Esben Nielsen
2006-03-29 7:14 ` Ingo Molnar
2006-03-29 7:59 ` Esben Nielsen
2006-03-29 12:35 ` Ingo Molnar
2006-03-28 21:36 ` Thomas Gleixner
2006-03-28 22:23 ` Esben Nielsen
2006-03-28 22:42 ` Thomas Gleixner
2006-03-28 23:34 ` Esben Nielsen
2006-03-28 23:59 ` Thomas Gleixner
2006-03-29 12:29 ` Ingo Molnar [this message]
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