> "Paul E. McKenney" (on Fri, 2 May 2008 05:29:55 -0700) wrote:
> >OK -- for some reason, I was thinking that it was illegal to
> >invoke smp_call_function() with irqs disabled...
> >
> >Ah, I see it -- smp_call_function_mask() says:
> >
> > * You must not call this function with disabled interrupts or from a
> > * hardware interrupt handler or from a bottom half handler.
> >
> >So we have no problem with smp_call_function, then.
> >
> >OK, so smp_call_function() -can- be invoked with irqs disabled?
> >Hmmm... I will give this some thought.
>
> Doing any smp_call_function with interrupts disabled is a potential
> deadlock. See
http://lkml.org/lkml/2004/5/2/116.