Re: user-space tracing on Debian... or..?

[fche at redhat dot com (Frank Ch. Eigler)]

c.bezemer wrote:

> [...]  So is there another way to set probes on all function
> returns, rather than creating a new probe explicitly for every
> return using the line number?  [...]

With a basic facility missing in the kernel, systemtap users are
forced to wait for "uretprobes" to be finished / merged.

An alternative is the stap --runtime=dyninst backend, which would have
to be enabled in your systemtap build/distro, and is still relatively
young code.

(Another alternative is to use an older Fedora or any RHEL[56] distro,
where the kernel utrace patches were applied, and thus systemtap users
have full function-return-probing powers.)

- FChE