From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752998AbYJ0Xg4 (ORCPT ); Mon, 27 Oct 2008 19:36:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751659AbYJ0Xgs (ORCPT ); Mon, 27 Oct 2008 19:36:48 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.124]:42261 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751527AbYJ0Xgr (ORCPT ); Mon, 27 Oct 2008 19:36:47 -0400 Date: Mon, 27 Oct 2008 19:36:46 -0400 (EDT) From: Steven Rostedt X-X-Sender: rostedt@gandalf.stny.rr.com To: =?ISO-8859-15?Q?Fr=E9d=E9ric_Weisbecker?= cc: Ingo Molnar , Linux Kernel Subject: Re: Ftrace doesn't work anymore on latest tip In-Reply-To: Message-ID: References: User-Agent: Alpine 1.10 (DEB 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 28 Oct 2008, Fr?d?ric Weisbecker wrote: > Hi, > > I tried to launch the function tracer with the latest -tip. > With DYNAMIC_FTRACE (I just tried one time), I set "function" to > current_trace and it blocks during writing. I can't > even switch to another console. > Without DYNAMIC_FTRACE I can set the tracer to function but it doesn't > produce any trace, even on trace or tracing_pipe. > > My config is in attachment. > I will try some revert...or some other tracers. > You might want to update your config (make oldconfig?) The latest tip has FUNCTION_TRACER instead of FTRACE. Also, the config you sent me, does not even have FTRACE on :-/ CONFIG_HAVE_FTRACE=y CONFIG_HAVE_DYNAMIC_FTRACE=y CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y CONFIG_TRACER_MAX_TRACE=y CONFIG_RING_BUFFER=y CONFIG_TRACING=y # CONFIG_FTRACE is not set # CONFIG_IRQSOFF_TRACER is not set # CONFIG_PREEMPT_TRACER is not set # CONFIG_SYSPROF_TRACER is not set CONFIG_SCHED_TRACER=y CONFIG_CONTEXT_SWITCH_TRACER=y -- Steve