Re: [PATCH 4/6] drivers:misc: sources for Init manager module

Greg KH
2010-03-24T16:25:51Z

On Wed, Mar 24, 2010 at 09:11:45AM -0700, Marcel Holtmann wrote:
> > I wanted to somehow put this in staging because then it would probably have a thorough architectural review process.
> > Some details about this driver -
> >
> > 1. This driver will be used by Bluetooth-BlueZ/FM-V4L2 and GPS (probably character device driver) using the EXPORTED symbols (-register/_unregister).
> >
> > 2. Much like the hciattach daemon which maintains N_HCI bluetooth line discipline, this driver will also have a User-Space N_TI_WL Init manager (UIM) maintaining the Line discipline.
>
> can you explain why you think this is needed and we can not interface
> this directly. If it is a serial port, what protocol does it talk?
>
> > 3. Because of the UIM should know when to install/uninstall line discipline, the /sys entry is created a root called UIM (a new kobject) and UIM daemon would write it's PID to it.
>
> I don't understand this. This sounds like a broken concept to me.

I also agree, those sysfs files are not acceptable, and will not work
as-designed due to the pid namespace issues :(

thanks,

greg k-h