linux-kernel - Re: [PATCH v7 0/7] Improve gpu

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Message-ID: <0b20e88a-9009-4fa2-b5cb-ab78ce834587@gmail.com>
Date: Fri, 31 Jan 2025 14:12:28 +0100
From: Christian König <ckoenig.leichtzumerken@...il.com>
To: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@....com>
Cc: 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: Re: [PATCH v7 0/7] Improve gpu_scheduler trace events + uAPI

I can't see patch #1 in my inbox for some reason, but I already know 
what it does from your repository.

Feel free to add Reviewed-by: Christian König <christian.koenig@....com> 
to the entire series.

Regards,
Christian.

Am 31.01.25 um 12:02 schrieb Pierre-Eric Pelloux-Prayer:
> 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(-)
>