what does nr_iowait_cpu() do?

[Andev]

On Mon, Jul 14, 2014 at 10:10 AM, Mohammad Merajul Islam Molla
<meraj.enigma at gmail.com> wrote:
> Hello,
>
> I was looking into the code of cpuidle menu governor and it uses a
> function nr_iowait_cpu(int cpu).
> I could not find out what this function does.
>
> Can someone please explain what nr_iowait_cpu(int cpu) and variant
> nr_iowait() do?
>
> --

In all its glory:

unsigned long nr_iowait_cpu(int cpu)
{
    struct rq *this = cpu_rq(cpu);
    return atomic_read(&this->nr_iowait);
}


> Thanks,
> -Meraj
>
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-- 
Andev