From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arjan van de Ven Subject: Re: [PATCH 2/3] PERF(kernel): Cleanup power events Date: Sun, 24 Oct 2010 23:58:00 -0700 Message-ID: <4CC52A78.7060407@linux.intel.com> References: <1287488171-25303-1-git-send-email-trenn@suse.de> <1287488171-25303-3-git-send-email-trenn@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mga02.intel.com ([134.134.136.20]:39407 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751171Ab0JYG6E (ORCPT ); Mon, 25 Oct 2010 02:58:04 -0400 In-Reply-To: <1287488171-25303-3-git-send-email-trenn@suse.de> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Thomas Renninger Cc: Linus Torvalds , Andrew Morton , Thomas Gleixner , Masami Hiramatsu , Frank Eigler , Steven Rostedt , Kevin Hilman , Peter Zijlstra , linux-omap@vger.kernel.org, rjw@sisk.pl, linux-pm@lists.linux-foundation.org, linux-trace-users@vger.kernel.org, Jean Pihet , Pierre Tardy , Frederic Weisbecker , Tejun Heo , Mathieu Desnoyers , Ingo Molnar On 10/19/2010 4:36 AM, Thomas Renninger wrote: > New power trace events: > power:processor_idle > power:processor_frequency > power:machine_suspend > > > C-state/idle accounting events: > power:power_start > power:power_end > are replaced with: > power:processor_idle > I think you need two trace points for this one to enter idle one to exit because using magic encoding games to encode "exit"is a mistake; as can be seen in this patch. You're currently trying to use "0" to signal "end of idle", but "0" is also a valid idle state (namely that of polling)