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drm/amdgpu: simplify VM update tracking a bit

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Store the 64bit sequence directly. Makes it simpler to use and saves a bit
of fence reference counting overhead.

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
2022-03-08 15:06:49 +01:00
committed by Alex Deucher
parent 184a69ca4d
commit e997b82745
4 changed files with 16 additions and 37 deletions
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9
drivers/gpu/drm/amd/amdgpu/amdgpu_sync.c
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@@ -51,7 +51,7 @@ static struct kmem_cache *amdgpu_sync_slab;
void amdgpu_sync_create(struct amdgpu_sync *sync)
{
hash_init(sync->fences);
sync->last_vm_update = NULL;
sync->last_vm_update = 0;
}
/**
@@ -184,7 +184,7 @@ int amdgpu_sync_vm_fence(struct amdgpu_sync *sync, struct dma_fence *fence)
if (!fence)
return 0;
amdgpu_sync_keep_later(&sync->last_vm_update, fence);
sync->last_vm_update = max(sync->last_vm_update, fence->seqno);
return amdgpu_sync_fence(sync, fence);
}
@@ -376,8 +376,7 @@ int amdgpu_sync_clone(struct amdgpu_sync *source, struct amdgpu_sync *clone)
}
}
dma_fence_put(clone->last_vm_update);
clone->last_vm_update = dma_fence_get(source->last_vm_update);
clone->last_vm_update = source->last_vm_update;
return 0;
}
@@ -419,8 +418,6 @@ void amdgpu_sync_free(struct amdgpu_sync *sync)
dma_fence_put(e->fence);
kmem_cache_free(amdgpu_sync_slab, e);
}
dma_fence_put(sync->last_vm_update);
}
/**