Re: devfs vs udev/hotplug

[esmith <esmith@xxxxxxxxxxxx>]

Diego Calleja García escribio:

> There's one thing that devfs did and udev can't do (and it won't
> do because it's not its task; but there's not a replacement)
>
> With devfs you can "unload" (or not load at all) modules, so when
> a program try to access ej: a (already connected) USB stick
> devfs loads its module and all works. udev however relies on
> all modules being loaded; if a module isn't loaded and a 
> program try to access that usb stick it will fail because
> nobody will load the module (and hence udev will not create
> the device node). This seems to be important on embedded
> devices where memory is a precious resource and you wouldn't
> want to load all the modules at the same time to save a few
> KB of mem.

I think the uSDE approach might address these types of embedded problems.