[RFC PATCH 4/4] nvme: expose queue information via debugfs

[Sagi Grimberg]

On 20/04/2026 14:49, Nilay Shroff wrote:
> Add a new debugfs attribute "io_queue_info" to expose per-queue
> information for NVMe controllers. For NVMe-TCP, this includes the
> CPU handling each I/O queue and the associated TCP flow (source and
> destination address/port).
>
> This information can be useful for understanding and tuning the
> interaction between NVMe-TCP I/O queues and network stack components,
> such as IRQ affinity, RPS/RFS, XPS, or NIC flow steering (ntuple).
>
> The data is exported using seq_file interfaces to allow iteration
> over all controller queues.

Don't really mind having this. Not sure who will actually go through
the process of mangling RFS/RPS/XPS for based on this 5-tuple, but ok...