From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Zijlstra Subject: Re: [PATCH] tracing, perf: add more power related events Date: Wed, 22 Sep 2010 19:30:29 +0200 Message-ID: <1285176629.2275.1033.camel__37413.9781379656$1285176777$gmane$org@laptop> References: <201009171736.14170.trenn@suse.de> <20100917162412.GB3341@elte.hu> <201009180026.59482.trenn@suse.de> <4C9A21AD.1000800@linux.intel.com> <4C9A2FB3.105@linux.intel.com> <1285173835.2275.1026.camel@laptop> <4C9A37AE.2010509@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4C9A37AE.2010509@linux.intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-pm-bounces@lists.linux-foundation.org Errors-To: linux-pm-bounces@lists.linux-foundation.org To: Arjan van de Ven Cc: Len Brown , Jean Pihet , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, linux-trace-users@vger.kernel.org, linux-pm@lists.linux-foundation.org, Ingo Molnar , linux-omap@vger.kernel.org, arjan@infradead.org List-Id: linux-pm@vger.kernel.org On Wed, 2010-09-22 at 10:06 -0700, Arjan van de Ven wrote: > In this case we're talking about basically a suprious rename of > something that isn't really an improvement > (because it makes it harder to subscribe to only one type of event)... > that's not a good thing. People have been talking about more/more comprehensive power tracepoints for a while, and I think that's a valid goal, if its really a rename I'm sure you can work it out. That said, I really didn't read this discussion much, but your stance seems to be that any tracepoint you use must stay valid, and I object to that. What will do you do when we include a new scheduling policy and all the scheduler tracepoints need to change? (yes that's really going to happen) I'm not going to carry double tracepoints, and I'm not going to not merge that policy.