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SubjectRe: sched: Avoid SMT siblings in select_idle_sibling() if possible
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On Thu, 2011-11-17 at 02:59 +0100, Mike Galbraith wrote:
> On Wed, 2011-11-16 at 10:37 -0800, Suresh Siddha wrote:

> > It should be ok. Isn't it?
>
> Nope, wasn't ok.

Because you can't get to again: with a single E5620 package, it having
only SIBLING and MC domains.

again:
for_each_domain(target, sd) {
if (!smt && (sd->flags & SD_SHARE_CPUPOWER))
continue;

if (!(sd->flags & SD_SHARE_PKG_RESOURCES)) {
if (!smt) {
smt = 1;
goto again;



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