* Andi Kleen <[email protected]> wrote:
> "Jan Beulich" <[email protected]> writes:
>
> > There's nothing stack trace/unwind related among the functions listed at all afaics.
> > I don't know much about how profiling works, is it perhaps just missing something?
>
> Perhaps lockdep calls them with interrupts off? The old profiler
> doesn't support profiling with interrupts off. oprofile does, but it
> cannot be used at early boot.
Yes, lockdep does everything that changes the dependency graph(s) with
irqs off. Jan, i bounced you the mail with the function traces included,
that should show you the overhead points.
Ingo
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