From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756489Ab2ECOM7 (ORCPT ); Thu, 3 May 2012 10:12:59 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122]:3711 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754773Ab2ECOM5 (ORCPT ); Thu, 3 May 2012 10:12:57 -0400 X-Authority-Analysis: v=2.0 cv=N/Wr5hBB c=1 sm=0 a=ZycB6UtQUfgMyuk2+PxD7w==:17 a=XQbtiDEiEegA:10 a=YECtLpki0LgA:10 a=5SG0PmZfjMsA:10 a=Q9fys5e9bTEA:10 a=Er_tMXHLL19sWfeMzaQA:9 a=PUjeQqilurYA:10 a=ZycB6UtQUfgMyuk2+PxD7w==:117 X-Cloudmark-Score: 0 X-Originating-IP: 74.67.80.29 Message-ID: <1336054375.14207.84.camel@gandalf.stny.rr.com> Subject: Re: [PATCH v6 1/3] trace: Make removal of ring buffer pages atomic From: Steven Rostedt To: Vaibhav Nagarnaik Cc: Frederic Weisbecker , Ingo Molnar , Laurent Chavey , Justin Teravest , David Sharp , linux-kernel@vger.kernel.org Date: Thu, 03 May 2012 10:12:55 -0400 In-Reply-To: <1336049840.14207.82.camel@gandalf.stny.rr.com> References: <1328212844-11889-2-git-send-email-vnagarnaik@google.com> <1335388704-26790-1-git-send-email-vnagarnaik@google.com> <1336010118.14207.75.camel@gandalf.stny.rr.com> <1336049840.14207.82.camel@gandalf.stny.rr.com> Content-Type: text/plain; charset="ISO-8859-15" X-Mailer: Evolution 3.2.2-1 Content-Transfer-Encoding: 7bit Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2012-05-03 at 08:57 -0400, Steven Rostedt wrote: > So it seems to be trace-cmd doing something different that prevents the > expand from happening. Not sure what it is. If I get time, I'll > investigate it a little more. Do the following: echo 0 > /debug/tracing/tracing_on echo nop > /debug/tracing/current_tracer then look at buffer_size_kb. It's also giving me errors when I try to enable events or anything else when tracing_on is disabled. -- Steve