[PATCH v2 4/4] usertools/dpdk-devbind: print NUMA node

[Robin Jarry]

Burakov, Anatoly, Aug 20, 2024 at 11:40:
> I have heard about driverctl for a long time in context of devbind, and 
> I quickly tried it out just now, and IMO while the *functionality* is 
> there, the usability of devbind is IMO far more friendly:
>
> - it filters by device types that are of interest to us (driverctl just 
> lists all pci devices)
> - it prints out user-friendly names, not just PCI addresses
> - it lists loaded drivers, but not alternatives etc. like devbind does
> - I didn't test this, but I suspect it would allow overriding driver for 
> an active NIC
> - after my changes, devbind displays NUMA socket, driverctl doesn't :)

Yes, that's fair. devbind is more a dev oriented tool. driverctl is 
really focused on reproducible and persistent driver override (it has 
a systemd service that will force a rebind of pci devices on reboot).

> What we maybe can do for e.g. next release (currently I do have better 
> things to do if I can help it), is to make devbind a wrapper around 
> driverctl? This way, we can still keep the usability bells and whistles 
> we have, but drop the driver overriding code and leave it to driverctl? 
> It seems like that would be a good compromise, with the only downside 
> being that we'll depend on driverctl being installed.

Honestly, I don't think the dependency would be a good idea. Also, 
driverctl does not have any option to make a driver override temporary. 
It will persist after reboot which is not what devbind does.