Re: Multiple kprobes per address

["Vamsi Krishna S ." <vamsi@in.ibm.com>]

Hi,

On Fri, Nov 08, 2002 at 01:00:26PM -0800, Rusty Lynch wrote:
> I noticed that kprobes is designed around the idea of only allowing
> a single probe point per probe address.  Why not allow multiple probe
> points for a given probe address?  Is it a way of limiting complexity?
> 
We didn't think it would be useful and conceptually, it is simpler to
think of one probe at an address.

> It looks like it would be fairly straight forward to change get_kprobe(addr)
> to be get_kprobes(addr) where it returns a list of probe points associated
> with the address, and then tweak do_int3 to work through the entire list.
> Would such a change be acceptable?
> 
It will be trivial to add this, but why? Is there a good reason
for wanting to do this (multiple kprobes at same address) as opposed 
to doing all you want done on a probe hit in a single handler?

Regards,
Vamsi.
-- 
Vamsi Krishna S.
Linux Technology Center,
IBM Software Lab, Bangalore.
Ph: +91 80 5044959
Internet: vamsi@in.ibm.com