From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755664Ab0JNQm0 (ORCPT ); Thu, 14 Oct 2010 12:42:26 -0400 Received: from mail.digium.com ([216.207.245.2]:42792 "EHLO mail.digium.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755467Ab0JNQmZ (ORCPT ); Thu, 14 Oct 2010 12:42:25 -0400 X-Greylist: delayed 1698 seconds by postgrey-1.27 at vger.kernel.org; Thu, 14 Oct 2010 12:42:25 EDT Message-ID: <4CB72BF3.4030601@digium.com> Date: Thu, 14 Oct 2010 11:12:35 -0500 From: Shaun Ruffell User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.12) Gecko/20100907 Fedora/3.0.7-1.fc12 Thunderbird/3.0.7 MIME-Version: 1.0 To: Venkatesh Pallipadi CC: linux-kernel@vger.kernel.org Subject: Re: Proper kernel irq time accounting -v4 References: <1286237003-12406-1-git-send-email-venki@google.com> In-Reply-To: <1286237003-12406-1-git-send-email-venki@google.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/04/2010 07:03 PM, Venkatesh Pallipadi wrote: > Solution to (1) involves adding extra timing on irq entry/exit to > get the fine granularity info and then exporting it to user. > The following patchset addresses this problem in a way similar to [2][3]. > Keeps most of the code that does the timing generic > (CONFIG_IRQ_TIME_ACCOUNTING), based off of sched_clock(). And adds support for > this in x86. This time is not yet exported to userspace yet. Patch for that > coming soon. > Would you be willing to share your thoughts on how you plan to export this information to userspace? I applied this set to one of my machines in hopes of seeing more accurate hi time before I noticed that in the quoted paragraph you said this is still forthcoming. Thanks, Shaun