Re: [PATCH 0/5] trace: inroduce qmp: trace namespace
Stefan Hajnoczi <stefanha(a)redhat.com> writes:
On Thu, Oct 14, 2021 at 06:22:32PM +0300, Vladimir
Sementsov-Ogievskiy wrote:
> 12.10.2021 14:49, Markus Armbruster wrote:
> > Vladimir Sementsov-Ogievskiy <vsementsov(a)virtuozzo.com> writes:
[...]
> Another possible way is to update QAPI code generator to insert a
personal
> trace point for each qmp command.. That seems more complicated to implement,
> but I can try.
That's what came to mind when I saw this series too. The QAPI generator
can create a trace event for each QMP command. That way each command has
a dedicated trace event that can be enabled/disabled in the usual way
(e.g. built-in "trace" monitor command, SystemTap scripts, etc) without
introducing special syntax.
I like how this way stays entirely within the existing interface. I
couldn't tell you how to implement it, though :)