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

Pavan Savoy
2010-03-24T14:54:09Z

--- On Wed, 24/3/10, Marcel Holtmann <marcel@holtmann.org> wrote:

> From: Marcel Holtmann <marcel@holtmann.org>
> Subject: Re: [PATCH 4/6] drivers:misc: sources for Init manager module
> To: "Greg KH" <gregkh@suse.de>
> Cc: "Savoy, Pavan" <pavan_savoy@ti.com>, "alan@lxorguk.ukuu.org.uk" <alan@lxorguk.ukuu.org.uk>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
> Date: Wednesday, 24 March, 2010, 1:34 PM
> Hi Greg,
>
> > > The source for this problem, was that I could not
> install line
> > > discipline from kernel space.  i.e make
> N_TI_SHARED line discipline
> > > the current ldisc from kernel space itself.
> >
> > Are you sure?  I thought the bluetooth core did
> this already.  Have you
> > looked at how that works?
>
> I didn't have time to look at it at all so far. However I
> think this
> should just go via a proper review process. And it might
> need some
> architecture review first. It is clearly not a candidate
> for staging
> since it is not really self-contained.
>
> Regards
>
> Marcel
>
>
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Marcel, Greg,

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.

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.

4. As Alan suggested, If I make it self-contained by pushing number of line disciplines to a slightly larger number, then would it be OK ?

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