[v8,00/10] Improve gpu_scheduler trace events + UAPI

Message

Pierre-Eric Pelloux-Prayer March 20, 2025, 9:57 a.m. UTC

Hi,

The initial goal of this series was to improve the drm and amdgpu
trace events to be able to expose more of the inner workings of
the scheduler and drivers to developers via tools.

Then, the series evolved to become focused only on gpu_scheduler.
The changes around vblank events will be part of a different
series, as well as the amdgpu ones.

Moreover Sima suggested to make some trace events stable uAPI,
so tools can rely on them long term.

The first patches extend and cleanup the gpu scheduler events,
then add a documentation entry in drm-uapi.rst.

The last 2 patches are new in v8. One is based on a suggestion
from Tvrtko and gets rid of drm_sched_job::id. The other is a
cleanup of amdgpu trace events to use the fence=%llu:%llu format.

The drm_sched_job patches don't affect gpuvis which has code to parse
the gpu_scheduler events but these events are not enabled.

Changes since v7:
* uint64_t -> u64
* reworked dependencies tracing (Tvrtko)
* use common name prefix for all events (Tvrtko)
* dropped drm_sched_job::id (Tvrtko)

Useful links:
- userspace tool using the updated events:
https://gitlab.freedesktop.org/tomstdenis/umr/-/merge_requests/37
- v7:
https://lists.freedesktop.org/archives/dri-devel/2025-January/488117.html

Pierre-Eric Pelloux-Prayer (10):
  drm/debugfs: output client_id in in drm_clients_info
  drm/sched: store the drm client_id in drm_sched_fence
  drm/sched: add device name to the drm_sched_process_job event
  drm/sched: cleanup gpu_scheduler trace events
  drm/sched: trace dependencies for gpu jobs
  drm/sched: add the drm_client_id to the drm_sched_run/exec_job events
  drm/sched: cleanup event names
  drm/doc: document some tracepoints as uAPI
  drm: get rid of drm_sched_job::id
  drm/amdgpu: update trace format to match gpu_scheduler_trace

 Documentation/gpu/drm-uapi.rst                |  19 ++++
 drivers/accel/amdxdna/aie2_ctx.c              |   3 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c    |   2 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c        |   3 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_job.c       |   8 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_job.h       |   3 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h     |  32 ++----
 drivers/gpu/drm/drm_debugfs.c                 |  10 +-
 drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c  |   2 +-
 drivers/gpu/drm/imagination/pvr_job.c         |   2 +-
 drivers/gpu/drm/imagination/pvr_queue.c       |   5 +-
 drivers/gpu/drm/imagination/pvr_queue.h       |   2 +-
 drivers/gpu/drm/lima/lima_gem.c               |   2 +-
 drivers/gpu/drm/lima/lima_sched.c             |   6 +-
 drivers/gpu/drm/lima/lima_sched.h             |   3 +-
 drivers/gpu/drm/msm/msm_gem_submit.c          |   8 +-
 drivers/gpu/drm/nouveau/nouveau_sched.c       |   3 +-
 drivers/gpu/drm/panfrost/panfrost_drv.c       |   2 +-
 drivers/gpu/drm/panthor/panthor_drv.c         |   3 +-
 drivers/gpu/drm/panthor/panthor_mmu.c         |   2 +-
 drivers/gpu/drm/panthor/panthor_sched.c       |   5 +-
 drivers/gpu/drm/panthor/panthor_sched.h       |   3 +-
 .../gpu/drm/scheduler/gpu_scheduler_trace.h   | 103 +++++++++++++-----
 drivers/gpu/drm/scheduler/sched_entity.c      |  16 ++-
 drivers/gpu/drm/scheduler/sched_fence.c       |   4 +-
 drivers/gpu/drm/scheduler/sched_internal.h    |   2 +-
 drivers/gpu/drm/scheduler/sched_main.c        |  11 +-
 drivers/gpu/drm/v3d/v3d_submit.c              |   2 +-
 drivers/gpu/drm/xe/xe_sched_job.c             |   3 +-
 include/drm/gpu_scheduler.h                   |  13 ++-
 30 files changed, 186 insertions(+), 96 deletions(-)