Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933146AbZKXOs4 (ORCPT ); Tue, 24 Nov 2009 09:48:56 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932972AbZKXOsz (ORCPT ); Tue, 24 Nov 2009 09:48:55 -0500 Received: from casper.infradead.org ([85.118.1.10]:55275 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932208AbZKXOsz (ORCPT ); Tue, 24 Nov 2009 09:48:55 -0500 Date: Tue, 24 Nov 2009 06:50:22 -0800 From: Arjan van de Ven To: Thomas Gleixner Cc: Peter Zijlstra , Dimitri Sivanich , "Eric W. Biederman" , Ingo Molnar , Suresh Siddha , Yinghai Lu , LKML , Jesse Barnes , David Miller , Peter P Waskiewicz Jr , "H. Peter Anvin" Subject: Re: [PATCH v6] x86/apic: limit irq affinity Message-ID: <20091124065022.6933be1a@infradead.org> In-Reply-To: References: <20091120211139.GB19106@sgi.com> <20091122011457.GA16910@sgi.com> <1259069986.4531.1453.camel@laptop> Organization: Intel X-Mailer: Claws Mail 3.7.3 (GTK+ 2.16.6; i586-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1006 Lines: 28 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/