Hi, I want to clarify why IB device rename functionality didn't change debugfs and would like to ask what to do next. In drivers/infiniband/hw/*, we have 6 devices which are calling to debugfs_create_dir() in order to create debugfs root. The output is located in /sys/kernel/debug/. Such folders are created during driver module load and some of the drivers creates subfolders for every device initialized, during device probe. 1. PCI-based connection MLX5 and cxgb4 drivers separate the different device by their PCIs. [leonro@server ~]$ sudo ls /sys/kernel/debug/mlx5/ 0000:00:0c.0 2. Based on IB device name HFI1, ocrdma and qib create subfolders with device index embedded in it, like hfi1_0,...,hfi1_N 3. No-separation between devices USNIC like this. So device rename works seamlessly for type #1 and #3. Wile for type #2, the debugfs entries don't change. Right now, I see three options: 1. Do nothing. 2. Convert type #2 drivers to be type #1. 3. Add callback/extra implementation in IB/core to support one live driver (hfi1) and two frozen ones. Thanks
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