[systemd-devel] Network Interface Names: solution for a desktop OS

[Greg KH]

On Wed, Apr 13, 2016 at 02:42:29AM +0200, Xen wrote:
> When you say that probing on the PCI bus never ends, and if we are
> talking not about some form of hotplugging, then I really wonder what
> you're on about ;-) because I do think the kernel has a limited set of
> probes that it can perform, and at some point it is going to quit.

Not if it is interrupt driven, the kernel only responds to devices when
they show up, it doesn't know how many devices are going to be ever
found.

> It seems clear that some things are only going to be done once.

"once"?

> So I am not sure what you are alluding to. If there is some theoretical
> tail (and it has not to do with hotplugging) I'm not sure if it is ever
> going to be relevant here. If there is a theoretical tail, the system
> cannot wait for it anyway.

The issue is that you need to create a system that allows devices to
show up whenever they decide to show up, you can't "wait around" for
anything as you never know just how long, or what will, or will not,
show up.

You have to design a system that is event driven, as that is how
hardware works, and is the only way your system can work properly due to
it possibly changing all the time (devices added / removed between
boots, etc.)

good luck!

greg k-h