From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arjan van de Ven Subject: Re: PATCH [0/4] perf: clean-up of power events API Date: Fri, 08 Oct 2010 06:17:27 -0700 Message-ID: <4CAF19E7.3070103@linux.intel.com> References: <1286205661-24448-1-git-send-email-jean.pihet@newoldbits.com> <201010062334.46971.trenn@suse.de> <20101007150825.GB12581@Krystal> <20101007155816.GA5351@nowhere> <4CAED2F0.9080801@kernel.org> <20101008083819.GA22385@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mga11.intel.com ([192.55.52.93]:35453 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755913Ab0JHNR3 (ORCPT ); Fri, 8 Oct 2010 09:17:29 -0400 In-Reply-To: <20101008083819.GA22385@elte.hu> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Ingo Molnar Cc: Tejun Heo , Frederic Weisbecker , Pierre Tardy , Mathieu Desnoyers , Thomas Renninger , Jean Pihet , linux-trace-users@vger.kernel.org, linux-pm@lists.linux-foundation.org, linux-perf-users@vger.kernel.org, rjw@sisk.pl, linux-omap@vger.kernel.org, Peter Zijlstra , Kevin Hilman , Steven Rostedt , Frank Eigler , Masami Hiramatsu , Thomas Gleixner , Andrew Morton , Linus Torvalds On 10/8/2010 1:38 AM, Ingo Molnar wrote: > > The fundamental thing about tracing/instrumentation is that there are no > deep ABI needs: it's all about analyzing development kernels (and a few > select versions that get the enterprise treatment) but otherwise the > half-life of this kind of information is very short. > > So we dont want to tie ourselves down with excessive ABIs. > ok I'll start working on a second mechanism then to export information that applications need ;-( it'll look a lot like tracing I suppose ;-(