diff options
| author | Felix Kuehling <Felix.Kuehling@amd.com> | 2019-01-02 23:47:39 +0100 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-01-14 21:59:50 +0100 |
| commit | bbdf514fe5648566b0754476cbcb92ac3422dde2 (patch) | |
| tree | 54532b8f43554fbbb5231278d6a662f81f11989c /drivers/gpu | |
| parent | drm/amdkfd: Allow building KFD on ARM64 (v2) (diff) | |
| download | linux-bbdf514fe5648566b0754476cbcb92ac3422dde2.tar.xz linux-bbdf514fe5648566b0754476cbcb92ac3422dde2.zip | |
drm/amdkfd: Don't assign dGPUs to APU topology devices
dGPUs need their own topology devices. Don't assign them to APU topology
devices with CPU cores.
Bug: https://github.com/RadeonOpenCompute/ROCK-Kernel-Driver/issues/66
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Tested-by: Elias Konstantinidis <ekondis@gmail.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_topology.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c index 4734f1a35516..09da91644f9f 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c @@ -1093,8 +1093,6 @@ static uint32_t kfd_generate_gpu_id(struct kfd_dev *gpu) * the GPU device is not already present in the topology device * list then return NULL. This means a new topology device has to * be created for this GPU. - * TODO: Rather than assiging @gpu to first topology device withtout - * gpu attached, it will better to have more stringent check. */ static struct kfd_topology_device *kfd_assign_gpu(struct kfd_dev *gpu) { @@ -1102,12 +1100,20 @@ static struct kfd_topology_device *kfd_assign_gpu(struct kfd_dev *gpu) struct kfd_topology_device *out_dev = NULL; down_write(&topology_lock); - list_for_each_entry(dev, &topology_device_list, list) + list_for_each_entry(dev, &topology_device_list, list) { + /* Discrete GPUs need their own topology device list + * entries. Don't assign them to CPU/APU nodes. + */ + if (!gpu->device_info->needs_iommu_device && + dev->node_props.cpu_cores_count) + continue; + if (!dev->gpu && (dev->node_props.simd_count > 0)) { dev->gpu = gpu; out_dev = dev; break; } + } up_write(&topology_lock); return out_dev; } |