Re: xenbus callback probe...

[Mukesh Rathor <mukesh.rathor@oracle.com>]

Thanks. Now, that I played around a bit, am going in circles trying to
figure how to keep very simple in my messaging driver. Basically,
I'd like to keep it symmetric, no frontend/backend, just one file,
dynamically loadable, kernel driver. When a driver is loaded in domU, it
broadcasts ring-ref/event-chnl and causes dom0 callback to wake up and
act on it. Since domU can't write to /local/domain/0/blah/bleh, is there
some other generic way to broadcast it? I'd like to avoid a user level
script. It almost appears xenbus_watch_path() may allow me to set
callback on /local/domain/*/blah/bleh, but I don't have the
xenbus_device ptr as it seems provided by xenbus_driver{} callbacks.

Thanks in advance,
Mukesh


Keir Fraser wrote:
 > On 11/12/2008 03:14, "Mukesh Rathor" <mukesh.rathor@oracle.com> wrote:
 >
 >> Hi,
 >>
 >> I'm trying to figure what causes a probe callback to happen, any quick
 >> example?
 >
 > New directories appearing in xenstore under /local/domain/x/device/
 >
 >  -- Keir
 >