On Tue, 16 Jun 2015, Thomas Gleixner wrote:

On Mon, 15 Jun 2015, Vikas Shivappa wrote:
On Mon, 15 Jun 2015, Peter Zijlstra wrote:
On Fri, Jun 12, 2015 at 11:17:08AM -0700, Vikas Shivappa wrote:
+       cpumask_and(&tmp, cpu_online_mask, mask);
+       cpumask_clear_cpu(cpu, &tmp);
+       return cpumask_any(&tmp);
+}

You had a good example in cpumask_any_but() copy that.

I saw the cpumask_any_but but wanted to avoid the for loop in the
cpumask_any_but , but now i see why from your previous comment. Without the
cpumask_t I will have to use the cpumask_any_but .. the two were related.

It can be done w/o a loop. Hint, you need a static cpumask in your
code anyway.

Ah thats right, I always need the tmp mask. Confused this with avoiding the cpumask_clear_cpu line in the code vs. using cpumask_any_but.

something like this just making it static then ?

        static cpumask_t tmp;

        cpumask_and(&tmp, cpu_online_mask, mask);
        cpumask_clear_cpu(cpu, &tmp);
        return cpumask_any(&tmp);

Thanks,
Vikas


Thanks

        tglx

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