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Date: Mon, 4 Mar 2013 15:22:14 +0100
From: Stefan Hajnoczi <stefanha@gmail.com>
Message-ID: <20130304142214.GA3981@stefanha-thinkpad.redhat.com>
References: <20130301152934.22476.82209.stgit@fimbulvetr.bsc.es>
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Subject: Re: [Qemu-devel] [PATCH v11 0/7] trace: Generic event state
	description
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To: =?iso-8859-1?Q?Llu=EDs?= Vilanova <vilanova@ac.upc.edu>
Cc: Blue Swirl <blauwirbel@gmail.com>, qemu-devel@nongnu.org

On Fri, Mar 01, 2013 at 04:29:35PM +0100, Lluís Vilanova wrote:
> Provides a generic event state description structure (TraceEvent) and a more
> detailed event control and query interface.
> 
> This is achieved by creating a new "non-public" tracing backend (i.e., not
> selectable by the user at configure time) that will generate the appropriate
> event description information.
> 
> Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
> ---
> 
> Changes in v11:
> 
> * Rebase on a4bcea3 from master.

Hi Lluís,
Thanks for rebasing.  Unfortunately I still hit the hang on shutdown
with the simple trace backend.

Steps to reproduce:
$ ./configure --target-list=x86_64-softmmu --enable-trace-backend=simple
$ make
$ cat my-events
bdrv_open_common
$ x86_64-softmmu/qemu-system-x86_64 \
      -enable-kvm -m 1024 \
      -trace events=my-events \
      -drive if=virtio,cache=none,file=test.img
Ctrl-Alt-2
(qemu) quit
...hang...

Please let me know if you are able to reproduce it.  qemu.git/master
does not behave this way.

Stefan