From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756599Ab0JORUT (ORCPT ); Fri, 15 Oct 2010 13:20:19 -0400 Received: from casper.infradead.org ([85.118.1.10]:60869 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756371Ab0JORUS convert rfc822-to-8bit (ORCPT ); Fri, 15 Oct 2010 13:20:18 -0400 Subject: Re: Proper kernel irq time accounting -v4 From: Peter Zijlstra To: Venkatesh Pallipadi Cc: Ingo Molnar , "H. Peter Anvin" , Thomas Gleixner , Balbir Singh , Martin Schwidefsky , linux-kernel@vger.kernel.org, Paul Turner , Eric Dumazet In-Reply-To: References: <1286237003-12406-1-git-send-email-venki@google.com> <1287155513.29097.1526.camel@twins> <1287156451.29097.1531.camel@twins> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Date: Fri, 15 Oct 2010 19:20:05 +0200 Message-ID: <1287163205.1998.103.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 On Fri, 2010-10-15 at 10:13 -0700, Venkatesh Pallipadi wrote: > On Fri, Oct 15, 2010 at 8:27 AM, Peter Zijlstra wrote: > > On Fri, 2010-10-15 at 17:11 +0200, Peter Zijlstra wrote: > >> OK, I'll take this, but will frob 4 to simply add PF_KSOFTIRQD. > >> > >> We can do all additional changes, possibly including what Eric > >> suggested, at a later stage as increments. > >> > >> Thanks! > > > > *kablam!* > > > > booting with noirqtime doesn't work either, same explosion. > > This crash seems to be from patch 8/8 that changed irq_enter. Please > drop it for now and I will rework that. > I will also send the cleanup changes including one that Eric suggested > as incremental patches. There's also still the PF_flags rework patch from me: http://lkml.org/lkml/2010/9/20/170 Which I still need to rework based on comments from Linus/Andrew. The idea is to take out all PF_flags of the "I'm a $FOO" thread into their own field.