Andi Kleen wrote:

quoted

And the functions they call?
    

Yes. But you only really need it for the actual callback, not the bulk
of stop_machine_run() (which calls scheduler and lots of other stuff)
The actual callback should be pretty limited already so it shouldn't
be a big limitation.

-Andi
  

Hmm.  Seems dangerous to rely on this, because functions could change 
from inline to out of line without people noticing that it affects this 
very corner case for kprobes + paravirt + stop_machine.  Is there a way 
to cascade the __kprobes declaration to all called functions, perhaps 
with a static checker, like sparse?

Zach