Re: [PATCH -tip perf/probes 00/10] x86 insn decoder bugfixes andperf-probe syntax changes

[Masami Hiramatsu]

Masami Hiramatsu wrote:
> Masami Hiramatsu wrote:
> > Ingo Molnar wrote:
> > > What we want here is two fold:
> > >
> > >     - enable kprobes event support when perf events is enabled and kprobes
> > >       is enabled. We dont want another config option for it.
> >
> > Sure, at least that combination should enable kprobe-tracer forcibly.
>
> Hmm, someone may not want to enables kprobe-tracer. Perhaps,
> "default y if (EVENT_PROFILE)" is enough, isn't it?

Oops, this causes recursive dependency error :-(

kernel/trace/Kconfig:90:error: found recursive dependency: TRACING ->
EVENT_TRACING -> EVENT_PROFILE -> KPROBE_TRACER -> GENERIC_TRACER -> TRACING

At this time, this kind of weak dependency may not supported by Kbuild yet.

Thank you,

--
Masami Hiramatsu

Software Engineer
Hitachi Computer Products (America), Inc.
Software Solutions Division

e-mail: mhiramat@xxxxxxxxxx

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