From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754725AbYISLFQ (ORCPT ); Fri, 19 Sep 2008 07:05:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752921AbYISLFB (ORCPT ); Fri, 19 Sep 2008 07:05:01 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:40611 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752815AbYISLFA (ORCPT ); Fri, 19 Sep 2008 07:05:00 -0400 Date: Fri, 19 Sep 2008 13:04:49 +0200 From: Ingo Molnar To: =?iso-8859-1?Q?Fr=E9d=E9ric?= Weisbecker Cc: Steven Noonan , linux-kernel@vger.kernel.org Subject: Re: [PATCH -tip FIXED] ftrace: add nop tracer Message-ID: <20080919110449.GB30624@elte.hu> References: <1221818803-9616-1-git-send-email-steven@uplinklabs.net> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Frédéric Weisbecker wrote: > It seems we have two "none" tracers now. Why not seeing this nop > tracer as an improvment of the current "none tracer" ? > > As a result the none tracer contained in trace.c could be replaced by > this new one as the default tracer. And that's said, that will enable > trace_printk by default even when no tracer is selected by the user. > > What do you think about it? hmm ... good idea. There are some special properties of the none tracer (it inhibits trace output for example), and those should be discontinued i guess. Ingo