Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755731AbYJBWdw (ORCPT ); Thu, 2 Oct 2008 18:33:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754402AbYJBWdS (ORCPT ); Thu, 2 Oct 2008 18:33:18 -0400 Received: from casper.infradead.org ([85.118.1.10]:50168 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755602AbYJBWdR (ORCPT ); Thu, 2 Oct 2008 18:33:17 -0400 Date: Thu, 2 Oct 2008 15:33:05 -0700 From: Arjan van de Ven To: Greg KH Cc: Andi Kleen , Thomas Gleixner , LKML , Linus Torvalds , Andrew Morton , Ingo Molnar , Benjamin Herrenschmidt , Steven Rostedt , Jon Masters , Sven Dietrich Subject: Re: [RFC patch 0/5] genirq: add infrastructure for threaded interrupt handlers Message-ID: <20081002153305.057cf6d9@infradead.org> In-Reply-To: <20081002213146.GA9201@kroah.com> References: <20081001223213.078984344@linutronix.de> <873ajfoy1a.fsf@basil.nowhere.org> <20081002213146.GA9201@kroah.com> Organization: Intel X-Mailer: Claws Mail 3.5.0 (GTK+ 2.12.12; i386-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: 1176 Lines: 32 On Thu, 2 Oct 2008 14:31:46 -0700 Greg KH wrote: > On Thu, Oct 02, 2008 at 04:46:09PM +0200, Andi Kleen wrote: > > Thomas Gleixner writes: > > > > > > - move long running handlers out of the hard interrupt context > > > > I'm not sure I'm really looking forward to this brave new world > > of very long running interrupt handlers. e.g. what do you > > do for example when some handler blocks for a very long time? > > We have this issue today with some irqs (USB is known for issue > here...) > > So I don't think this is a big issue, and in the end, a better idea as > it might force us to confront some of the big abusers and fix them. > one of the things irq threads gives you is that 'top' will show you which ones are eating cpu ;-) -- 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/