Re: [PATCH v4 00/13] [RfC] fix tracing for modules

[Gerd Hoffmann]

On Wed, Jun 09, 2021 at 04:14:12PM +0100, Stefan Hajnoczi wrote:
> On Tue, Jun 01, 2021 at 03:24:01PM +0200, Gerd Hoffmann wrote:
> > First version that actually works.  Only qxl covered for this RfC,
> > other modules will follow once the basics are hashed out.
> > 
> > v4:
> >  - rebase to latest master.
> >  - fix systemtap tracing.
> >  - also cover virtio-gpu modules.
> >  - pick up some review tags.
> >  - misc minor tweaks.
> > 
> > v3:
> >  - handle initialization of modular tracepoints.
> > 
> > TODO:
> > Enabling modular tracepoints via -trace cmd line doesn't work yet.
> > Guess we need to store the list somewhere for later re-processing.
> > Error handling is tricky, specifically the "tracepoint doesn't exist"
> > error.  Suggestions / ideas are welcome.
> 
> Excellent! I think we discussed these TODOs in the past. Can we merge
> this series in close to its current form or does it degrade the tracing
> experience (e.g. does the -trace command-line no longer work for
> trace-events files that were split off into modules)?

Main focus for v4 was to make stap work.
The cmd line issue is still there.

Patches 1-5 can be cherry-picked without breaking something.

take care,
  Gerd