diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2020-10-06 16:54:35 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-10-05 17:49:39 -0400 |
| commit | 7a41ed8b59ba74ae36adc7f4688feff9e710cf76 (patch) | |
| tree | ff893d4a068196d39880df3103f6f2b39a1a4082 /drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | |
| parent | 9cff0879aefeca6eba586f02cad337e409e4f2b0 (diff) | |
drm/amdgpu: add new INFO ioctl query for the last GPU page fault
Add a interface to query the last GPU page fault for the process.
Useful for debugging context lost errors.
v2: split vmhub representation between kernel and userspace
v3: add locking when fetching fault info in INFO IOCTL
Mesa MR: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23238
libdrm MR: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23238
Cc: samuel.pitoiset@gmail.com
Reviewed-by: Christian König <christian.koenig@amd.com>
Acked-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c index 081bd28e2443..6cd77c21048b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c @@ -1224,6 +1224,26 @@ int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) return copy_to_user(out, max_ibs, min((size_t)size, sizeof(max_ibs))) ? -EFAULT : 0; } + case AMDGPU_INFO_GPUVM_FAULT: { + struct amdgpu_fpriv *fpriv = filp->driver_priv; + struct amdgpu_vm *vm = &fpriv->vm; + struct drm_amdgpu_info_gpuvm_fault gpuvm_fault; + unsigned long flags; + + if (!vm) + return -EINVAL; + + memset(&gpuvm_fault, 0, sizeof(gpuvm_fault)); + + xa_lock_irqsave(&adev->vm_manager.pasids, flags); + gpuvm_fault.addr = vm->fault_info.addr; + gpuvm_fault.status = vm->fault_info.status; + gpuvm_fault.vmhub = vm->fault_info.vmhub; + xa_unlock_irqrestore(&adev->vm_manager.pasids, flags); + + return copy_to_user(out, &gpuvm_fault, + min((size_t)size, sizeof(gpuvm_fault))) ? -EFAULT : 0; + } default: DRM_DEBUG_KMS("Invalid request %d\n", info->query); return -EINVAL; |