drm/amdkfd: allow users to target recommended SDMA engines

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Certain GPUs have better copy performance over xGMI on specific
SDMA engines depending on the source and destination GPU.
Allow users to create SDMA queues on these recommended engines.
Close to 2x overall performance has been observed with this
optimization.

Signed-off-by: Jonathan Kim <jonathan.kim@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Jonathan Kim 2024-05-21 13:22:15 -04:00 • committed by Alex Deucher

parent 60c30ba7ba

commit e06b71b231

7 changed files with 116 additions and 3 deletions

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16

drivers/gpu/drm/amd/amdkfd/kfd_chardev.c

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38

drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c

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5

drivers/gpu/drm/amd/amdkfd/kfd_priv.h

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1

drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c

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52

drivers/gpu/drm/amd/amdkfd/kfd_topology.c

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1

drivers/gpu/drm/amd/amdkfd/kfd_topology.h

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6

include/uapi/linux/kfd_ioctl.h

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