Re: Help with netlink needed

[Vara Prasad <prasadav at us dot ibm dot com>]

Ulrich Drepper wrote:

> Martin Hunt wrote:
>
> > We really need to start getting the kernel <-> user space data transport
> > code into the runtime library soon.  I have not done any work with this,
> > so help would be greatly appreciated.
>
>
> There are special filesystems available for this kind of work.  And
> don't confuse this with netlink.  netlink is, I think, really the wrong
> approach here.
>
> I think the relayfs might do:
>
> http://lwn.net/Articles/19391/
>
> (Might not be the most recent description.)
>
> But you really need to get kernel people's input, since they are the
> once deciding about inclusion of such code.
>
> I would not spend much time coming up with a brand-new mechanism of your
> own.
>
> --
> â Ulrich Drepper â Red Hat, Inc. â 444 Castro St â Mountain View, CA â

As we discussed on the call two weeks back for supporting debugging and 
performance
analysis goals of systemtap we need a high speed and low overhead 
transport mechanism.
Relayfs specifically designed for this purpose. Now that it has gone 
through community
review and on it's way to mainline we should definitely consider that.  
I agree
that we should not invent a new filesystem for this, but we should make
enhancements if needed to the existing ones.