> > Also, have you considered using:
> > 
> > [root@zoo ~]# perf list exceptions:page_fault*
> >   exceptions:page_fault_user                         [Tracepoint event]
> >   exceptions:page_fault_kernel                       [Tracepoint event]
> > [root@zoo ~]#
> > 
> > Instead? I need to check if they're completely equivalent to what we
> > need here...
> Hm, didn't know there are two kinds of fault events :-/
> But it seems these are x86 only.
Maybe we can use these x86 only events to trace userspace fault duration?
It seems we can pair exceptions:page_fault_user and
context_tracking:user_enter. But it's just a theory, need to verify...
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