Re: [PATCH tip/core/rcu 8/9] nohz_full: Add full-system-idle state machine

Yann E. MORIN
2013-09-08T10:32:56Z

Paul, All,

On 2013-09-07 11:57 -0700, Paul E. McKenney spake thusly:
> On Sat, Sep 07, 2013 at 11:13:48AM +0200, Yann E. MORIN wrote:
[--SNIP--]
> > I'll see if I can come up with a meaningfull construct that fixes your
> > use-case. Don't hold your breath, though! ;-)
>
> If not, we need to add NR_CPUS to the architectures lacking them...

Unfortunately, I was not able to come up with anything suitable.

I think your proposal to always define NR_CPUS=1 for architectures
without SMP support is a good solution.

After all, if !SMP because the architecture does not support it, I
believe it makes sense that NR_CPUS be defined to 1.

Unless NR_CPUS carries with it a hidden meaning about SMP being
possible, that is, which would probably be wrong anyway, since we have
SMP for this.

Regards,
Yann E. MORIN.

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