From: Arjan van de Ven <arjan@infradead.org>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>,
Dimitri Sivanich <sivanich@sgi.com>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Ingo Molnar <mingo@elte.hu>,
Suresh Siddha <suresh.b.siddha@intel.com>,
Yinghai Lu <yinghai@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Jesse Barnes <jbarnes@virtuousgeek.org>,
David Miller <davem@davemloft.net>,
Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>,
"H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [PATCH v6] x86/apic: limit irq affinity
Date: Tue, 24 Nov 2009 06:50:22 -0800 [thread overview]
Message-ID: <20091124065022.6933be1a@infradead.org> (raw)
In-Reply-To: <alpine.LFD.2.00.0911241443110.24119@localhost.localdomain>
On Tue, 24 Nov 2009 14:55:15 +0100 (CET)
> > Furthermore, the /sysfs topology information should include IRQ
> > routing data in this case.
>
> Hmm, not sure about that. You'd need to scan through all the nodes to
> find the set of CPUs where an irq can be routed to. I prefer to have
> the information exposed by the irq enumeration (which is currently in
> /proc/irq though).
yes please.
one device can have multiple irqs
one irq can be servicing multiple devices
expressing that in sysfs is a nightmare, while
sticking it in /proc/irq *where the rest of the info is* is
much nicer for apps like irqbalance
--
Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,
visit http://www.lesswatts.org
next prev parent reply other threads:[~2009-11-24 14:48 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-20 21:11 Dimitri Sivanich
2009-11-21 18:49 ` Eric W. Biederman
2009-11-22 1:14 ` Dimitri Sivanich
2009-11-24 13:20 ` Thomas Gleixner
2009-11-24 13:39 ` Peter Zijlstra
2009-11-24 13:55 ` Thomas Gleixner
2009-11-24 14:50 ` Arjan van de Ven [this message]
2009-11-24 17:41 ` Eric W. Biederman
2009-11-24 18:00 ` Peter P Waskiewicz Jr
2009-11-24 18:20 ` Ingo Molnar
2009-11-24 18:27 ` Yinghai Lu
2009-11-24 18:32 ` Peter Zijlstra
2009-11-24 18:59 ` Yinghai Lu
2009-11-24 21:41 ` Dimitri Sivanich
2009-11-24 21:51 ` Thomas Gleixner
2009-11-24 23:06 ` Eric W. Biederman
2009-11-25 1:23 ` Thomas Gleixner
2009-11-24 22:42 ` Eric W. Biederman
2009-11-25 15:40 ` Arjan van de Ven
2009-12-03 16:50 ` Dimitri Sivanich
2009-12-03 16:53 ` Waskiewicz Jr, Peter P
2009-12-03 17:01 ` Dimitri Sivanich
2009-12-03 17:07 ` Waskiewicz Jr, Peter P
2009-12-03 17:19 ` Dimitri Sivanich
2009-12-03 18:50 ` Waskiewicz Jr, Peter P
2009-12-04 16:42 ` Dimitri Sivanich
2009-12-04 21:17 ` Peter P Waskiewicz Jr
2009-12-04 23:12 ` Eric W. Biederman
2009-12-05 10:38 ` Peter P Waskiewicz Jr
2009-12-07 13:44 ` Dimitri Sivanich
2009-12-07 13:39 ` Dimitri Sivanich
2009-12-07 23:28 ` Peter P Waskiewicz Jr
2009-12-08 15:04 ` Dimitri Sivanich
2009-12-11 3:16 ` david
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