drm/amdgpu: rework TLB flushing

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Instead of tracking the VM updates through the dependencies just use a
sequence counter for page table updates which indicates the need to
flush the TLB.

This reduces the need to flush the TLB drastically.

v2: squash in NULL check fix (Christian)

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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This commit is contained in:

Christian König 2022-03-15 15:27:45 +01:00 • committed by Alex Deucher

parent e997b82745

commit 5255e146c9

6 changed files with 76 additions and 32 deletions

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8

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

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6

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

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20

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

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2

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

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57

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

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15

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

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