On Fri, Oct 28, 2016 at 12:10:41AM -0700, Vikram Mulukutla wrote: > +static int cpu_is_waiting_on_io(struct rq *rq) > +{ > + if (!walt_io_is_busy) > + return 0; > + > + return atomic_read(&rq->nr_iowait); > +}
This is just drug induced nonsense. The per-cpu nr_iowait number is completely without meaning.