From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:55211) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Qyhv6-00033C-2i for qemu-devel@nongnu.org; Wed, 31 Aug 2011 06:21:20 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Qyhv5-00041x-7G for qemu-devel@nongnu.org; Wed, 31 Aug 2011 06:21:20 -0400 Received: from mail-wy0-f173.google.com ([74.125.82.173]:56526) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Qyhv5-00041q-2v for qemu-devel@nongnu.org; Wed, 31 Aug 2011 06:21:19 -0400 Received: by wyf22 with SMTP id 22so419310wyf.4 for ; Wed, 31 Aug 2011 03:21:18 -0700 (PDT) Date: Wed, 31 Aug 2011 11:21:13 +0100 From: Stefan Hajnoczi Message-ID: <20110831102113.GD11497@stefanha-thinkpad.localdomain> References: <20110825191731.1413.26838.stgit@ginnungagap.bsc.es> <20110825191843.1413.61848.stgit@ginnungagap.bsc.es> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20110825191843.1413.61848.stgit@ginnungagap.bsc.es> Subject: Re: [Qemu-devel] [PATCH v7 11/13] trace-state: [simple] disable all trace points by default List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: =?iso-8859-1?Q?Llu=EDs?= Cc: qemu-devel@nongnu.org, chouteau@adacore.com On Thu, Aug 25, 2011 at 09:18:43PM +0200, Lluís wrote: > Note that this refers to the backend-specific state (whether the output must be > generated), not the event "disabled" property (which always uses the "nop" > backend). > > Signed-off-by: Lluís Vilanova > --- > scripts/tracetool | 9 ++------- > trace-events | 3 --- > 2 files changed, 2 insertions(+), 10 deletions(-) At this point the quickstart in docs/tracing.txt may be confusing since QEMU runs as normal but no events are recorded :). Please add a step before launching QEMU that creates a simple events file, like: bdrv_aio_readv bdrv_aio_writev This way people looking at the quickstart know they need to choose events that they would like to record and use -trace events=my-events. Stefan