This series aims to enable BACO by default on supported AMD platforms and ensures that the AMD Kernel Fusion Driver can co-exist with this feature when the GPU devices are runtime suspended and firmware pushes the envelop to save more power with BACO entry sequence. Current approach makes sure that if KFD is using GPU services for compute, it won't let AMDGPU driver suspend and if the AMDGPU driver is already runtime suspended with GPUs in deep power saving mode with BACO, the KFD driver wakes up the AMDGPU and then starts the compute workload execution. This series has been tested with a single GPU (fiji), Dual GPUs (fiji and fiji/tonga) and seems to work fine. I have not seen but expect some corner cases where for some reason a KFD client binds a process but is unable to complete the task within 60 seconds. Ideally we should put the runtime_put and auto_suspend code in some function which is logical opposite of bind_process_to_device but during my experiments, it ended up with random gpu hang, machine reboot etc so any comments for improvement are welcome. Todo: rebase on top of https://patchwork.freedesktop.org/patch/338037/ Rajneesh Bhardwaj (5): drm/amdgpu: always enable runtime power management drm/amdgpu: Fix missing error check in suspend drm/amdkfd: Introduce debugfs option to disable baco drm/amdkfd: show warning when kfd is locked drm/amdkfd: refactor runtime pm for baco drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c | 12 ++++----- drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h | 9 ++++--- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 7 +++-- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 3 +++ drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 9 +++---- drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 2 ++ drivers/gpu/drm/amd/amdkfd/kfd_debugfs.c | 27 +++++++++++++++++++ drivers/gpu/drm/amd/amdkfd/kfd_device.c | 31 +++++++++++++--------- drivers/gpu/drm/amd/amdkfd/kfd_iommu.c | 5 +++- drivers/gpu/drm/amd/amdkfd/kfd_process.c | 19 ++++++++++--- 10 files changed, 91 insertions(+), 33 deletions(-) -- 2.17.1 _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx
