Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030326AbWHOOpq (ORCPT ); Tue, 15 Aug 2006 10:45:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030324AbWHOOpq (ORCPT ); Tue, 15 Aug 2006 10:45:46 -0400 Received: from outpipe-village-512-1.bc.nu ([81.2.110.250]:15077 "EHLO lxorguk.ukuu.org.uk") by vger.kernel.org with ESMTP id S1030327AbWHOOpo (ORCPT ); Tue, 15 Aug 2006 10:45:44 -0400 Subject: Re: What determines which interrupts are shared under Linux? From: Alan Cox To: Roger Heflin Cc: Linux-Kernel , linux-ide@vger.kernel.org In-Reply-To: <44E1D760.6070600@atipa.com> References: <44E1D760.6070600@atipa.com> Content-Type: text/plain Content-Transfer-Encoding: 7bit Date: Tue, 15 Aug 2006 16:06:19 +0100 Message-Id: <1155654379.24077.286.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.6.2 (2.6.2-1.fc5.5) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 905 Lines: 21 Ar Maw, 2006-08-15 am 09:17 -0500, ysgrifennodd Roger Heflin: > On Linux when interrupts are defined similar to below, what defines say > ide2, ide3 to be on the same interrupt? The bios, linux, the driver using > the interrupt? And can that be controlled/overrode at the > kernel/driver level? Only with a soldering iron. They are the way the system is wired. Moving boards between slots may change the IRQ allocation. > I have identified that the disks that are shared on ide2, ide3 do funny > things when both are being heavily used (dma_expiry), this is an older > driver versions That could be occuring just through lack of PCI bus bandwidth. - 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/