From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934288Ab0EEAdR (ORCPT ); Tue, 4 May 2010 20:33:17 -0400 Received: from mail-pv0-f174.google.com ([74.125.83.174]:55628 "EHLO mail-pv0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755144Ab0EEAdQ (ORCPT ); Tue, 4 May 2010 20:33:16 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=YmGHWxAg8v4R2WVCZ+pbtP7S7vUliaZOpJwJ+AhJR4oH4IYsIR4EU2PwlSKSrnrYC7 vToXgrUU52dq8tdL7ItG+N2FHzG8vdnW57Dk8kph6BAGUQawqXMEoPOHQGwdeO/1WERj NjYRTmNISZY04HbfeL1Nbxw9DjDd5LtGFrYXM= Message-ID: <4BE0BCC3.1090101@lwfinger.net> Date: Tue, 04 May 2010 19:33:07 -0500 From: Larry Finger User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100317 SUSE/3.0.4-1.11 Thunderbird/3.0.4 MIME-Version: 1.0 To: rostedt@goodmis.org CC: LKML Subject: Re: How to write marker info in MMIO trace from kernel References: <4BE06933.9080202@lwfinger.net> <1272998579.9739.235.camel@gandalf.stny.rr.com> <4BE09F42.9070909@lwfinger.net> <1273013889.22438.8.camel@gandalf.stny.rr.com> In-Reply-To: <1273013889.22438.8.camel@gandalf.stny.rr.com> Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/04/2010 05:58 PM, Steven Rostedt wrote: > On Tue, 2010-05-04 at 17:27 -0500, Larry Finger wrote: > >> Thanks for the info. One other question - when I write only mmiotrace to >> the current_tracer, the trace_printk() stuff does not end up in the >> buffer. I can get it by using the "sysprof" tracer, but that has a lot >> of stuff I do not want. Did I miss some configuration? My list of >> available tracers is "blk kmemtrace mmiotrace wakeup_rt wakeup function >> sysprof sched_switch nop". > > Ug, that's because the mmiotrace handles its own prints and ignores > anything it does not know about. Here, try this patch: > > -- Steve > > diff --git a/kernel/trace/trace_mmiotrace.c b/kernel/trace/trace_mmiotrace.c > index 017fa37..8652f28 100644 > --- a/kernel/trace/trace_mmiotrace.c > +++ b/kernel/trace/trace_mmiotrace.c > @@ -282,7 +282,7 @@ static enum print_line_t mmio_print_line(struct trace_iterator *iter) > case TRACE_PRINT: > return mmio_print_mark(iter); > default: > - return TRACE_TYPE_HANDLED; /* ignore unknown entries */ > + return TRACE_TYPE_UNHANDLED; > } > } That did the trick. Thanks a lot, Larry