From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751408Ab3HSVfu (ORCPT ); Mon, 19 Aug 2013 17:35:50 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122]:24484 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751070Ab3HSVfq (ORCPT ); Mon, 19 Aug 2013 17:35:46 -0400 X-Authority-Analysis: v=2.0 cv=e9yEuNV/ c=1 sm=0 a=Sro2XwOs0tJUSHxCKfOySw==:17 a=Drc5e87SC40A:10 a=Ciwy3NGCPMMA:10 a=iKlYmpTFJ6IA:10 a=5SG0PmZfjMsA:10 a=bbbx4UPp9XUA:10 a=meVymXHHAAAA:8 a=KGjhK52YXX0A:10 a=_-yd4YAFh8UA:10 a=0G-pJu9H_6PBYHEStYQA:9 a=Sro2XwOs0tJUSHxCKfOySw==:117 X-Cloudmark-Score: 0 X-Authenticated-User: X-Originating-IP: 67.255.60.225 Message-Id: <20130819213324.405942342@goodmis.org> User-Agent: quilt/0.60-1 Date: Mon, 19 Aug 2013 17:33:24 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org, linux-rt-users Cc: Thomas Gleixner , Carsten Emde , Sebastian Andrzej Siewior , John Kacur , Clark Williams Subject: [PATCH RT 0/3] hwlat-detector: Have it actually find hardware latency Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Thi patch series fixes up hwlat-detector to check the entire path of time for a latency being hit, instead of the quick check between two time stamps. It also uses the trace_local_clock() if available, which is much lighter weight than ktime_get() which might produce false positives. As the trace clock is used to detect irq latencies, it's suitable for hardware latency. Finally, stop machine is removed and the test is run by a single thread.