On Sun, Mar 15, 2020 at 11:38:03AM +1100, matthew green wrote:
> "Andrew Doran" writes:
> > Module Name: src
> > Committed By: ad
> > Date: Sat Mar 14 13:34:44 UTC 2020
> >
> > Modified Files:
> > src/sys/arch/sparc/sparc: intr.c
> >
> > Log Message:
> > sparc cpu_intr_p(): try to work around l_cpu not being set early on by
> > using curcpu().
>
> ah, good idea. this will involve one fewer deref, curcpu()
> is mapped at a fixed address, so it might even be faster now
> than it used to be.
Oh, hm.. Given that it's a fixed address is there a way the compiler can
screw this up in the face of a kernel preemption (theoretical right now for
sparc*)? I don't think so.. None of the fanciness is required then.
bool
cpu_intr_p(void)
{
return curcpu()->ci_idepth != 0;
}
Andrew
