Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754449Ab0HXMkd (ORCPT ); Tue, 24 Aug 2010 08:40:33 -0400 Received: from casper.infradead.org ([85.118.1.10]:38249 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753155Ab0HXMkb convert rfc822-to-8bit (ORCPT ); Tue, 24 Aug 2010 08:40:31 -0400 Subject: Re: [PATCH 0/4] Finer granularity and task/cgroup irq time accounting From: Peter Zijlstra To: Martin Schwidefsky Cc: balbir@linux.vnet.ibm.com, Venkatesh Pallipadi , Ingo Molnar , "H. Peter Anvin" , Thomas Gleixner , Paul Menage , linux-kernel@vger.kernel.org, Paul Turner , Heiko Carstens , Paul Mackerras , Tony Luck In-Reply-To: <20100824140619.35850ae9@mschwide.boeblingen.de.ibm.com> References: <1279583835-22854-1-git-send-email-venki@google.com> <20100720095546.2f899e04@mschwide.boeblingen.de.ibm.com> <20100722131239.208d9501@mschwide.boeblingen.de.ibm.com> <1282636286.2605.2307.camel@laptop> <20100824080515.GK4684@balbir.in.ibm.com> <1282640953.2605.2428.camel@laptop> <20100824113801.GO4684@balbir.in.ibm.com> <1282650835.2605.2629.camel@laptop> <20100824140619.35850ae9@mschwide.boeblingen.de.ibm.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Date: Tue, 24 Aug 2010 14:39:56 +0200 Message-ID: <1282653596.2605.2679.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 733 Lines: 17 On Tue, 2010-08-24 at 14:06 +0200, Martin Schwidefsky wrote: > Well, I have sent a patch back in 2006 that stops adding the hardirq / > softirq time to the currently running process. See > http://lkml.org/lkml/2006/8/24/139 Time to maybe revisit that ;-) > It did not get very far, so that answer to the question if we need > accounting madness seems to be yes .. Well, that's only a little accounting, but trying to infer to what task to account IRQ time is going to become madness. -- 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/