From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 12 Jan 2001 21:06:46 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 12 Jan 2001 21:06:36 -0500 Received: from isis.its.uow.edu.au ([130.130.68.21]:65206 "EHLO isis.its.uow.edu.au") by vger.kernel.org with ESMTP id ; Fri, 12 Jan 2001 21:06:28 -0500 Message-ID: <3A5FB997.7F366C3@uow.edu.au> Date: Sat, 13 Jan 2001 13:12:39 +1100 From: Andrew Morton X-Mailer: Mozilla 4.7 [en] (X11; I; Linux 2.4.0 i586) X-Accept-Language: en MIME-Version: 1.0 To: Linus Torvalds CC: Frank de Lange , Alan Cox , Manfred Spraul , dwmw2@infradead.org, linux-kernel@vger.kernel.org, mingo@elte.hu Subject: Re: QUESTION: Network hangs with BP6 and 2.4.x kernels, hardware In-Reply-To: <20010113014807.B29757@unternet.org> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Linus Torvalds wrote: > > On Sat, 13 Jan 2001, Frank de Lange wrote: > > > On Fri, Jan 12, 2001 at 04:36:33PM -0800, Linus Torvalds wrote: > > > It may well not be disable_irq() that is buggy. In fact, there's good > > > reason to believe that it's a hardware problem. > > > > I am inclined to believe it IS a hardware problem... If disable_irq were buggy, > > wouldn't the problem occur more frequently in other irq-heavy areas? A quick > > count shows that disable_irq* is used in 84 sourcefiles in the driver/* > > directory. This includes drivers which generate many interrupts in a short > > timeframe (like ide). > > IDE is not my favourite example of a "known stable driver". Also, in many > cases IDE is for historical reasons connected to an EDGE io-apic pin (ie > it's still considered an ISA interrupt). Which probably wouldn't show this > problem anyway. > 3c59x calls disable_irq() once per minute, and seems to be one of the most-affected drivers. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/