[Bug] flops get wrong :'BatchNorm2d' object has no attribute '__flops__'

[jimuIee]

Prerequisite

• I have searched Issues and Discussions but cannot get the expected help.
• I have read the FAQ documentation but cannot get the expected help.
• The bug has not been fixed in the latest version (master) or latest version (3.x).

Task

I'm using the official example scripts/configs for the officially supported tasks/models/datasets.

Branch

master branch https://github.com/open-mmlab/mmdetection

Environment

mmcls 0.23.2
mmcv-full 1.5.0
mmdet 2.25.1 anaconda3/envs/openmmlab/lib/python3.8/site-packages/mmdet-2.25.1-py3.8.egg
model-index 0.1.11
nest-asyncio 1.5.5
networkx 2.8.7

Reproduces the problem - code sample

self.bn = nn.BatchNorm2d(channels)
i have add a new class in fpn.py and this new class hac include nn.BatchNorm2d

Reproduces the problem - command or script

python tools/analysis_tools/get_flops.py work_dirs/gfl_r50_fpn_1x_coco_res101/gfl_r50_fpn_1x_coco.py

Reproduces the problem - error message

'BatchNorm2d' object has no attribute 'flops'

Additional information

No response

[hhaAndroid]

@jimuIee Can you check if the official configuration provided is working? For example python tools/analysis_tools/get_flops.py configs/gfl/gfl_r50_fpn_1x_coco.py

[jimuIee]

@jimuIee Can you check if the official configuration provided is working? For example python tools/analysis_tools/get_flops.py configs/gfl/gfl_r50_fpn_1x_coco.py

YES the official config can working normally,but why did i add a "nn.batchnorm2d"made it fail?