From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757395Ab0FVHxD (ORCPT ); Tue, 22 Jun 2010 03:53:03 -0400 Received: from he.sipsolutions.net ([78.46.109.217]:57574 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753649Ab0FVHxA (ORCPT ); Tue, 22 Jun 2010 03:53:00 -0400 Subject: Re: [rfc] Describe events in a structured way via sysfs From: Johannes Berg To: Lin Ming Cc: Ingo Molnar , Peter Zijlstra , Greg KH , Corey Ashford , Frederic Weisbecker , Paul Mundt , "eranian@gmail.com" , "Gary.Mohr@Bull.com" , "arjan@linux.intel.com" , "Zhang, Yanmin" , Paul Mackerras , "David S. Miller" , Russell King , Arnaldo Carvalho de Melo , Will Deacon , Maynard Johnson , Carl Love , Kay Sievers , lkml , Thomas Gleixner In-Reply-To: <1277192877.5025.9.camel@minggr.sh.intel.com> References: <1274233602.3036.84.camel@localhost> <20100518200524.GA20223@kroah.com> <1274236496.3603.22.camel@minggr.sh.intel.com> <20100519024823.GA25229@kroah.com> <1274253276.5605.10124.camel@twins> <20100520184213.GB21030@kroah.com> <20100520201418.GB11470@elte.hu> <20100520231229.GB8335@kroah.com> <1274429038.1674.1684.camel@laptop> <20100521094053.GA4658@elte.hu> <1277110509.18390.28.camel@minggr.sh.intel.com> <1277112858.3618.16.camel@jlt3.sipsolutions.net> <1277187920.4467.3.camel@minggr.sh.intel.com> <1277189971.3637.5.camel@jlt3.sipsolutions.net> <1277191359.5025.4.camel@minggr.sh.intel.com> <1277192007.3637.8.camel@jlt3.sipsolutions.net> <1277192877.5025.9.camel@minggr.sh.intel.com> Content-Type: text/plain; charset="UTF-8" Date: Tue, 22 Jun 2010 09:52:25 +0200 Message-ID: <1277193145.3637.12.camel@jlt3.sipsolutions.net> Mime-Version: 1.0 X-Mailer: Evolution 2.30.1.2 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2010-06-22 at 15:47 +0800, Lin Ming wrote: > So it can only trace the whole hardware piece rather than a specific > interface? > > If yes, then will change to > - /sys/devices/pci0000:00/0000:00:1c.1/0000:03:00.0/net/wlan0/events/iwlwifi_dev_ioread32/ > + /sys/devices/pci0000:00/0000:00:1c.1/0000:03:00.0/events/iwlwifi_dev_ioread32/ Yes, I guess you were right from the start and I was just thinking about it the wrong way. So presumably you'll somehow have to "instantiate" tracepoints for a given device? johannes