drm/amdgpu: map compute rings by least recently used pipe

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This patch provides a guarantee that the first n queues allocated by
an application will be on different pipes. Where n is the number of
pipes available from the hardware.

This helps avoid ring aliasing which can result in work executing in
time-sliced mode instead of truly parallel mode.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Andres Rodriguez <andresx7@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Andres Rodriguez 2017-09-26 17:43:14 -04:00 • committed by Alex Deucher

parent 4a75aefe3f

commit 35161bbc13

3 changed files with 28 additions and 10 deletions

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8

drivers/gpu/drm/amd/amdgpu/amdgpu_queue_mgr.c

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25

drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c

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5

drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h

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