From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from [140.186.70.92] (port=49549 helo=eggs.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43) id 1OsboL-0002n1-3A
	for qemu-devel@nongnu.org; Mon, 06 Sep 2010 09:32:38 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69)
	(envelope-from <stefanha@gmail.com>) id 1OsboJ-0003bh-Rn
	for qemu-devel@nongnu.org; Mon, 06 Sep 2010 09:32:36 -0400
Received: from mail-vw0-f45.google.com ([209.85.212.45]:49451)
	by eggs.gnu.org with esmtp (Exim 4.69)
	(envelope-from <stefanha@gmail.com>) id 1OsboJ-0003bc-NX
	for qemu-devel@nongnu.org; Mon, 06 Sep 2010 09:32:35 -0400
Received: by vws19 with SMTP id 19so3417935vws.4
	for <qemu-devel@nongnu.org>; Mon, 06 Sep 2010 06:32:35 -0700 (PDT)
MIME-Version: 1.0
In-Reply-To: <20100905073023.GA16215@redhat.com>
References: <1281609395-17621-1-git-send-email-stefanha@linux.vnet.ibm.com>
	<20100905073023.GA16215@redhat.com>
Date: Mon, 6 Sep 2010 14:32:34 +0100
Message-ID: <AANLkTikHSLZmotUFPZce3VLHeXY_YPjfetA=jMMnOzc1@mail.gmail.com>
Subject: Re: [Qemu-devel] Re: [PATCH 00/14] trace: Add static tracing to QEMU
From: Stefan Hajnoczi <stefanha@gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
List-Id: qemu-devel.nongnu.org
List-Unsubscribe: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Julien Desfossez <ju@klipix.org>, Prerna Saxena <prerna@linux.vnet.ibm.com>, Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>, qemu-devel@nongnu.org

On Sun, Sep 5, 2010 at 8:30 AM, Michael S. Tsirkin <mst@redhat.com> wrote:
> On Thu, Aug 12, 2010 at 11:36:21AM +0100, Stefan Hajnoczi wrote:
>> 2. The built-in 'simple' trace backend writes binary traces to
>> =A0 =A0/tmp/trace-<pid>.
>
> Saving files with predictable names in /tmp is usually not a good idea,
> see e.g. http://en.wikipedia.org/wiki/Symlink_race.
> Put them in $HOME or something like that.

Let's default to the current working directory (which it already does
on Windows).  If QEMU is run as a daemon or in another environment
where this doesn't make sense, then it needs to be configured
appropriately:
$ ./configure --trace-file=3D/var/qemu/trace

Stefan