From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755280Ab0EWSeB (ORCPT ); Sun, 23 May 2010 14:34:01 -0400 Received: from mail.skyhub.de ([78.46.96.112]:42372 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755099Ab0EWSd7 (ORCPT ); Sun, 23 May 2010 14:33:59 -0400 Date: Sun, 23 May 2010 20:33:53 +0200 From: Borislav Petkov To: Peter Zijlstra Cc: Ingo Molnar , Frederic Weisbecker , Steven Rostedt , Arnaldo Carvalho de Melo , Lin Ming , linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/2] perf: Add persistent events Message-ID: <20100523183353.GB1408@liondog.tnic> Mail-Followup-To: Borislav Petkov , Peter Zijlstra , Ingo Molnar , Frederic Weisbecker , Steven Rostedt , Arnaldo Carvalho de Melo , Lin Ming , linux-kernel@vger.kernel.org References: <1274554806-28216-1-git-send-email-bp@alien8.de> <1274554806-28216-2-git-send-email-bp@alien8.de> <1274638513.1674.1727.camel@laptop> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <1274638513.1674.1727.camel@laptop> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Peter Zijlstra Date: Sun, May 23, 2010 at 08:15:13PM +0200 > On Sat, 2010-05-22 at 21:00 +0200, Borislav Petkov wrote: > > Register and enable events marked as persistent right after perf events > > has initialized. > > > > Not-yet-signed-off-by: Borislav Petkov > > Nah, this is totally wrong. > > A persistent event would simply be a regular event, but created by the > kernel and not tied to a file-desc's lifetime. So you're saying the trace_mce_record() tracepoint for example should be created completely internally in the kernel and cease to be a tracepoint? Will it still be able to be selected by perf -e? Please elaborate. -- Regards/Gruss, Boris.