linux-kernel - [PATCH v7 0/7] Improve gpu_scheduler trace events + uAPI

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Message-ID: <20250131110328.706695-1-pierre-eric.pelloux-prayer@amd.com>
Date: Fri, 31 Jan 2025 12:02:58 +0100
From: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@....com>
To:
CC: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@....com>,
	<amd-gfx@...ts.freedesktop.org>, <dri-devel@...ts.freedesktop.org>,
	<etnaviv@...ts.freedesktop.org>, <freedreno@...ts.freedesktop.org>,
	<intel-xe@...ts.freedesktop.org>, <lima@...ts.freedesktop.org>,
	<linaro-mm-sig@...ts.linaro.org>, <linux-arm-msm@...r.kernel.org>,
	<linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-media@...r.kernel.org>, <nouveau@...ts.freedesktop.org>
Subject: [PATCH v7 0/7] Improve gpu_scheduler trace events + uAPI

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.

The last one adds a documentation entry in drm-uapi.rst.

Changes since v6:
* Addressed comments from Philipp, Tvrtko, Steven
* The commit storing drm_client_id in sched_fence adds an extra
field which looks like a duplicate of the owner field. Currently
amdgpu uses the owner field with some magic values, so we have to
have 2 separate fields for now, but ultimately one could be removed.
Similarly storing the drm_client_id in the sched_entity is not
really possible as there's nothing preventing a driver to use a
sched_entity with multiple drm_file instances.


Useful links:
- userspace tool using the updated events:
https://gitlab.freedesktop.org/tomstdenis/umr/-/merge_requests/37
- v6:
https://lists.freedesktop.org/archives/dri-devel/2024-November/477644.html

Pierre-Eric Pelloux-Prayer (7):
  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/doc: document some tracepoints as uAPI

 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/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   | 123 ++++++++++++++----
 drivers/gpu/drm/scheduler/sched_entity.c      |   8 +-
 drivers/gpu/drm/scheduler/sched_fence.c       |   4 +-
 drivers/gpu/drm/scheduler/sched_main.c        |   8 +-
 drivers/gpu/drm/v3d/v3d_submit.c              |   2 +-
 drivers/gpu/drm/xe/xe_sched_job.c             |   3 +-
 include/drm/gpu_scheduler.h                   |  12 +-
 28 files changed, 192 insertions(+), 64 deletions(-)

-- 
2.47.1