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SubjectRe: [rfc][patch] x86-64 new smp_call_function design

* Nick Piggin <npiggin@suse.de> wrote:

> > the two structures are quite similar in size and role - why not have
> > a type field and handle them largely together? I think we should try
> > to preserve a single queue and a single vector - that would remove a
> > number of ugly special-cases from the patch.
>
> A single queue will kill one of the big fundamental scalability
> improvements of the call_single. That's the problem.

hm, indeed. Then how about the other way around: couldnt the normal
all-cpus SMP function call be implemented transparently via using
smp_call_single() calls? The vector duplication is really ugly and feels
wrong.

Ingo


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