[lttng-dev] [Qemu-devel] [PATCH 0/6] hypertrace: Lightweight guest-to-QEMU trace channel

Stefan Hajnoczi stefanha at redhat.com
Tue Aug 23 15:54:30 UTC 2016

On Sun, Aug 21, 2016 at 02:32:34PM +0200, LluĂ­s Vilanova wrote:
> Unfortuntely, I've been unable to to make dtrace recognise QEMU's events (I'm
> only able to see the host kernel events). If someone with more experience on it
> can help me use dtrace with QEMU's events, I'll also add the supporting library
> to let dtrace do the callout to QEMU's moitor interface and control the events,
> and add a prperly useful example of that on the hypertrace docs (which was my
> original intention).

Which "dtrace" and host OS are you using?

QEMU builds with static user-space probes.  You need to tell DTrace or
SystemTap to enable those probes in order to record trace data.

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