Re: [PATCH -tip 0/8] perf-probe updates

[Arnaldo Carvalho de Melo]

Em Wed, Dec 09, 2009 at 04:41:39PM -0500, Masami Hiramatsu escreveu:
> Masami Hiramatsu wrote:
> >> Here the failure was because the symbol does not exist.
> > 
> > Yeah, so that's what I'm expecting to be implemented with below item :-)
> > 
> >    - Symbol search by libelf/kallsyms
> > 
> > I guess it will be done by using symbol.c.
> > (Actually, current
> 
> Oops, I might miss something, forgot it.
> actually, current perf probe doesn't decode kallsyms/elf, it just depends on
> kprobe-tracer. And kprobe-tracer will return -EINVAL not only if the symbol
> was not found, but also other reasons.
> 
> So, if we want to show below message, we need to decode elf or kallsyms.

Should be easy now with my latest patch :-)
 
> > >
> > > There's similar problems in most other failure cases. Trying to remove a
> > > non-existent probe gives:
> > >
> > >   # perf probe -d test
> > >   Warning: event "probe:test" is not found.
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