Re: Get number of CPU?

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On 6/27/05, Tetsuo Handa <from-kernelnewbies@xxxxxxxxxxxxxxxxxxx> wrote:
> > > I am writing a kernel module, and I want to get the number of CPU. If
> > > the machine is UP, the value returned will be 1, but if the machine is
> > > SMP, the value returned will be the number of CPU available.
> >
> > I think NR_CPUS give the number of the cpu in the system. You can use it
> 
> NR_CPUS is the max number that kernel supports.
> I think num_online_cpus() is what you want.
> http://lxr.linux.no/source/include/linux/cpumask.h#L349

Looks like num_online_cpus() is not exported, so it is impossible to
use it from a module, isnt it?


Thanks,
Hieu

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