Re: [Qemu-devel] [PATCH v4 1/2] trace: [qmp] Add commands to query and control event tracing state

[Eric Blake]

On 08/25/2014 05:19 AM, Lluís Vilanova wrote:
> Signed-off-by: Lluís Vilanova <address@hidden>
> ---
>  qapi-schema.json    |    3 ++
>  qapi/trace.json     |   65 ++++++++++++++++++++++++++++++++++++++++++++
>  qmp-commands.hx     |   35 ++++++++++++++++++++++++
>  trace/Makefile.objs |    1 +
>  trace/qmp.c         |   75 
> +++++++++++++++++++++++++++++++++++++++++++++++++++
>  5 files changed, 179 insertions(+)
>  create mode 100644 qapi/trace.json
>  create mode 100644 trace/qmp.c

> +##
> +# @trace-event-set-state:
> +#
> +# Set the dynamic tracing state of events.
> +#
> +# @name: Event name pattern (case-sensitive glob).
> +# @enable: Whether to enable tracing.
> +# @ignore-unavailable: #optional Do not match unavailable events with @name.

Would be nice to state that this bool defaults to false (at least,
that's my assumption).


> +
> +Query the state of events.
> +
> +Example:
> +
> +-> { "execute": "trace-event-get-state", "arguments": { "name": 
> "qemu_memalign" } }
> +<- { "return": [ { "name": "qemu_memalign", "state": "disabled" } ] }

It would be nice to use a glob in the "name" of the example, and show a
multi-element array as the result.

Those changes can be done in a followup patch, since Stefan has already
queued this patch.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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