Am 2022-01-12 um 2:48 a.m. schrieb yipechai:
> No longer insert ras blocks into ras_list if it already exists in ras_list.
>
> Signed-off-by: yipechai <YiPeng.Chai@xxxxxxx>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> index 62be0b4909b3..e6d3bb4b56e4 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> @@ -2754,9 +2754,17 @@ int amdgpu_ras_reset_gpu(struct amdgpu_device *adev)
> int amdgpu_ras_register_ras_block(struct amdgpu_device *adev,
> struct amdgpu_ras_block_object* ras_block_obj)
> {
> + struct amdgpu_ras_block_object *obj, *tmp;
> if (!adev || !amdgpu_ras_asic_supported(adev) || !ras_block_obj)
> return -EINVAL;
>
> + /* If the ras object had been in ras_list, doesn't add it to ras_list again */
> + list_for_each_entry_safe(obj, tmp, &adev->ras_list, node) {
> + if (obj == ras_block_obj) {
Instead of a loop, can't this be done more efficiently with "if
(!list_empty(&ras_block_obj->node))"?
Of course this would require that you move the INIT_LIST_HEAD to some
earlier stage so that list_empty is reliable.
Regards,
Felix
> + return 0;
> + }
> + }
> +
> INIT_LIST_HEAD(&ras_block_obj->node);
> list_add_tail(&ras_block_obj->node, &adev->ras_list);
>
