On Wed, Apr 13, 2005 at 10:08:28PM +0200, Ingo Molnar wrote:
>
> * Siddha, Suresh B <[email protected]> wrote:
>
> > - for_each_domain(target_cpu, sd) {
> > + for_each_domain(target_cpu, sd)
> > if ((sd->flags & SD_LOAD_BALANCE) &&
> > - cpu_isset(busiest_cpu, sd->span)) {
> > - sd = tmp;
> > + cpu_isset(busiest_cpu, sd->span))
> > break;
> > - }
> > - }
>
> hm, the right fix i think is to do:
>
> for_each_domain(target_cpu, tmp) {
> if ((tmp->flags & SD_LOAD_BALANCE) &&
> cpu_isset(busiest_cpu, tmp->span)) {
> sd = tmp;
> break;
> }
> }
Your suggestion also looks similar to my patch. You are also breaking on the
first one.
> because when balancing we want to match the widest-scope domain, not the
> first one.
We want the first domain spanning both the cpu's. That is the domain where
normal load balance failed and we restore to active load balance.
thanks,
suresh
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