From: Max Krasnyanskiy <maxk@qualcomm.com>
To: Arjan van de Ven <arjan@infradead.org>
Cc: Paul Jackson <pj@sgi.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
menage@google.com, mingo@elte.hu, linux-kernel@vger.kernel.org
Subject: Re: IRQ affinities
Date: Wed, 21 May 2008 09:18:05 -0700 [thread overview]
Message-ID: <48344B3D.5010404@qualcomm.com> (raw)
In-Reply-To: <20080520214523.60323aae@infradead.org>
Arjan van de Ven wrote:
> On Tue, 20 May 2008 18:14:58 -0700
> Max Krasnyanskiy <maxk@qualcomm.co
>
>> For the IRQs specifically all I need is to be able to tell the kernel
>> to not route IRQs to certain CPUs. That's mostly works already via
>> /proc/irq/N/smp_affinity, the problem is dynamically allocated irqs
>> because /proc/irq/N directory does not exist until those IRQs are
>> allocated/enabled.
> \\
>
> why don't you tell irqbalance instead? it'll make sure the irq stays
> out of the wind...
>
That will be too late. By the time irqbalance sees that IRQ it may have
already fired (possibly several times) on the "wrong" processor.
Max
next prev parent reply other threads:[~2008-05-21 16:18 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-12 1:23 boot cgroup questions Max Krasnyansky
2008-03-12 1:27 ` Paul Menage
2008-03-12 2:34 ` Max Krasnyansky
2008-03-12 2:36 ` Paul Menage
2008-03-12 2:53 ` Max Krasnyansky
2008-03-12 3:09 ` Paul Menage
2008-03-12 3:39 ` Max Krasnyansky
2008-03-12 4:59 ` Paul Jackson
2008-03-12 18:24 ` Max Krasnyanskiy
2008-03-12 18:57 ` Paul Jackson
2008-03-12 19:11 ` Max Krasnyanskiy
2008-03-12 19:32 ` Paul Jackson
2008-03-12 20:08 ` Max Krasnyanskiy
2008-03-12 20:37 ` Paul Jackson
2008-03-12 22:29 ` Max Krasnyanskiy
2008-03-12 23:30 ` Paul Jackson
2008-03-13 0:57 ` Max Krasnyanskiy
2008-03-13 7:03 ` Paul Jackson
2008-04-10 18:03 ` Max Krasnyanskiy
2008-04-14 18:39 ` Paul Jackson
2008-05-09 10:45 ` Peter Zijlstra
2008-05-09 11:17 ` IRQ affinities (was: boot cgroup questions) Paul Jackson
2008-05-09 11:48 ` Peter Zijlstra
2008-05-09 12:03 ` Paul Jackson
2008-05-09 12:14 ` Peter Zijlstra
2008-05-09 12:36 ` Paul Jackson
2008-05-09 17:43 ` Paul Jackson
2008-05-21 1:21 ` IRQ affinities Max Krasnyanskiy
2008-05-21 1:14 ` Max Krasnyanskiy
2008-05-21 4:45 ` Arjan van de Ven
2008-05-21 16:18 ` Max Krasnyanskiy [this message]
2008-05-21 6:34 ` Paul Jackson
2008-05-21 17:58 ` Max Krasnyanskiy
2008-04-14 18:42 ` boot cgroup questions Paul Jackson
2008-03-13 7:12 ` Paul Jackson
2008-04-10 17:24 ` Max Krasnyanskiy
2008-04-10 17:37 ` Paul Jackson
2008-03-12 23:32 ` Paul Jackson
2008-03-13 0:46 ` Max Krasnyanskiy
2008-03-12 19:16 ` Paul Menage
2008-03-12 19:24 ` Paul Jackson
2008-03-12 19:30 ` Max Krasnyanskiy
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