Re: [Bug #11954] sysprof tracer ABI regression in 2.6.28rc1

Ingo Molnar
2008-11-17T16:24:31Z

* Soeren Sandmann <sandmann-SSQ8kajmRZpknbxzx/v8hQ@public.gmane.org> wrote:

> There are no ABI guarantees for the sysprof tracer at this point,
> given that it is in debugfs [...]

to avoid situations like this, it would be nice to print out the
format string itself in the trace header, in printf format string
style. That way if there's a trivial expansion in trace format, it can
be detected (and even followed) by user-space - without some ugly
version based API.

Ingo