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

[Gerd Hoffmann]

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.

More context:
  https://bugzilla.redhat.com/show_bug.cgi?id=1898700
  https://bugzilla.redhat.com/show_bug.cgi?id=1869642

take care,
  Gerd

Gerd Hoffmann (13):
  qemu-trace-stap: changing SYSTEMTAP_TAPSET considered harmful.
  trace: iter init tweaks
  trace: add trace_event_iter_init_group
  trace/simple: pass iter to st_write_event_mapping
  trace/simple: add st_init_group
  meson: add trace_events_config[]
  meson: move up hw subdir (specifically before trace subdir)
  meson: add module_trace & module_trace_src
  trace/stap: build stap files for modules
  meson: move qxl trace events to separate file
  virtio-gpu: split trace points
  meson: move virtio trace events to separate file
  meson: move virtio-gl trace events to separate file

 hw/display/trace-qxl.h            |  1 +
 hw/display/trace-virtio-gl.h      |  1 +
 hw/display/trace-virtio.h         |  1 +
 trace/control.h                   | 30 ++++++++--
 trace/simple.h                    |  1 +
 hw/display/qxl-render.c           |  2 +-
 hw/display/qxl.c                  |  2 +-
 hw/display/virtio-gpu-base.c      |  2 +-
 hw/display/virtio-gpu-virgl.c     | 50 ++++++++--------
 hw/display/virtio-gpu.c           |  2 +-
 monitor/misc.c                    |  4 +-
 trace/control-target.c            |  2 +-
 trace/control.c                   | 39 ++++++++++---
 trace/qmp.c                       |  6 +-
 trace/simple.c                    | 22 +++++--
 hw/display/meson.build            | 12 ++++
 hw/display/trace-events           | 95 -------------------------------
 hw/display/trace-events-qxl       | 66 +++++++++++++++++++++
 hw/display/trace-events-virtio    | 16 ++++++
 hw/display/trace-events-virtio-gl | 18 ++++++
 meson.build                       | 43 +++++++++++++-
 scripts/qemu-trace-stap           | 14 ++---
 trace/meson.build                 | 36 +++++++++---
 23 files changed, 298 insertions(+), 167 deletions(-)
 create mode 100644 hw/display/trace-qxl.h
 create mode 100644 hw/display/trace-virtio-gl.h
 create mode 100644 hw/display/trace-virtio.h
 create mode 100644 hw/display/trace-events-qxl
 create mode 100644 hw/display/trace-events-virtio
 create mode 100644 hw/display/trace-events-virtio-gl

-- 
2.31.1