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Re: backwards compability of systemtap

"John Liang" <jliang@ibrix.com> writes:

> [...]  I am wondering if there is a way to run the compiled the
> module/C code of version 0.5.8 on redhat 4 update 3. If yes, then it
> means I can use the most recent features of systemtap to old version
> of redhat releases.

We haven't tested this configuration.  In theory, it could work.  It's
equivalent to simply building a modern systemtap natively on your
RHEL4U3 machine.

> When I try this, I got the following message from /var/log/messages:
> Mar 12 09:51:19 perf8 kernel: stap_7948: disagrees about version of symbol
> register_kprobe
> Mar 12 09:51:19 perf8 kernel: stap_7948: Unknown symbol register_kprobe

However, sometimes kernel API changes pop up.  If someone provides a
patch to let systemtap (again) create modules against this older API,
we could merge it.

- FChE
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