Re: [PATCH 17/20] SMP: Implement on_cpu()

[Andi Kleen]

> This defines on_cpu() which is similar to smp_call_function_single()
> except that it works if cpu happens to be the current cpu.  Can also be
> seen as a complement to on_each_cpu() (which also doesn't treat the
> current cpu specially).

I think it would be better to fix smp_call_function_single to just
handle this case transparently. There aren't that many callers yet because it is
fairly new.

-Andi
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