[PATCH v3 0/7] Fix multiple GPU resets in XGMI hive.

[Andrey Grodzovsky <andrey.grodzovsky@amd.com>]

Problem:
During hive reset caused by command timing out on a ring
extra resets are generated by triggered by KFD which is
unable to accesses registers on the resetting ASIC.

Fix: Rework GPU reset to actively stop any pending reset
works while another in progress. 

v2: Switch from generic list as was in v1[1] to eplicit 
stopping of each reset request from each reset source
per each request submitter. 

v3: Switch back to work_struct from delayed_work (Christian)

[1] - https://lore.kernel.org/all/20220504161841.24669-1-andrey.grodzovsky@amd.com/

Andrey Grodzovsky (7):
  Revert "workqueue: remove unused cancel_work()"
  drm/amdgpu: Cache result of last reset at reset domain level.
  drm/admgpu: Serialize RAS recovery work directly into reset domain
    queue.
  drm/amdgpu: Add work_struct for GPU reset from debugfs
  drm/amdgpu: Add work_struct for GPU reset from kfd.
  drm/amdgpu: Rename amdgpu_device_gpu_recover_imp back to
    amdgpu_device_gpu_recover
  drm/amdgpu: Stop any pending reset if another in progress.

 drivers/gpu/drm/amd/amdgpu/amdgpu.h        |  4 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c | 15 +++++-
 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h |  1 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 62 +++++++++++-----------
 drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c  | 19 ++++++-
 drivers/gpu/drm/amd/amdgpu/amdgpu_job.c    |  2 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c    |  4 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c  |  1 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h  |  1 +
 drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c      |  2 +-
 drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c      |  2 +-
 drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c      |  2 +-
 include/linux/workqueue.h                  |  1 +
 kernel/workqueue.c                         |  9 ++++
 14 files changed, 84 insertions(+), 41 deletions(-)

-- 
2.25.1