Re: New module loader makes kernel debugging much harder

[Rusty Russell <rusty@rustcorp.com.au>]

On Sun, 24 Nov 2002 12:18:46 +1100
Keith Owens <kaos@ocs.com.au> wrote:
> One possibility the new loader opens up is the ability to replicate the
> pure module data (rodata and text) for each node of a NUMA box.  There
> is already an option to replicate the kernel text on each node to cut
> down inter-node traffic.  Replicating the pure module data would be
> nice as well.  I guarantee that will result in something that is not
> "simply mapped".

Ewww, you are a sick lad 8)

But I'm not sure that there is any interface which wouldn't break horribly
when faced with that possibility.

The patch to restore /proc/ksyms is trivial.  As is the addition of a start
entry /proc/modules.  When combined with rth's simplified loader, it should
be sufficient for both ksymoops and oprofile.

kgdb needs a patch to work, anyway: you might want to restore /proc/ksyms
in that patch?  (I don't use kgdb, so my ignorance here is complete).

Rusty.
-- 
   there are those who do and those who hang on and you don't see too
   many doers quoting their contemporaries.  -- Larry McVoy