Re: [PATCH -v2 12/17] sched,rt: Use cpumask_any*_distribute()

[Peter Zijlstra]

On Tue, Oct 06, 2020 at 04:55:27PM +0100, Qais Yousef wrote:
> > +int cpumask_any_distribute(const struct cpumask *srcp)
> > +{
> > +	int next, prev;
> > +
> > +	/* NOTE: our first selection will skip 0. */
> > +	prev = __this_cpu_read(distribute_cpu_mask_prev);
> 
> We had a discussion then that __this_cpu*() variant assumes preemption being
> disabled and it's safer to use this_cpu*() variant instead. Still holds true
> here?

I think we ended up with not caring. We wanted a 'random' value, we get
a 'random' value from a 'random' CPU, still works ;-)