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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>
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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@@ -810,7 +810,7 @@ static int amdgpu_cs_vm_handling(struct amdgpu_cs_parser *p)
if (r)
return r;
r = amdgpu_sync_vm_fence(&p->job->sync, fpriv->prt_va->last_pt_update);
r = amdgpu_sync_fence(&p->job->sync, fpriv->prt_va->last_pt_update);
if (r)
return r;
@@ -821,7 +821,7 @@ static int amdgpu_cs_vm_handling(struct amdgpu_cs_parser *p)
if (r)
return r;
r = amdgpu_sync_vm_fence(&p->job->sync, bo_va->last_pt_update);
r = amdgpu_sync_fence(&p->job->sync, bo_va->last_pt_update);
if (r)
return r;
}
@@ -840,7 +840,7 @@ static int amdgpu_cs_vm_handling(struct amdgpu_cs_parser *p)
if (r)
return r;
r = amdgpu_sync_vm_fence(&p->job->sync, bo_va->last_pt_update);
r = amdgpu_sync_fence(&p->job->sync, bo_va->last_pt_update);
if (r)
return r;
}
@@ -853,7 +853,7 @@ static int amdgpu_cs_vm_handling(struct amdgpu_cs_parser *p)
if (r)
return r;
r = amdgpu_sync_vm_fence(&p->job->sync, vm->last_update);
r = amdgpu_sync_fence(&p->job->sync, vm->last_update);
if (r)
return r;