[PATCH v2 5/7] sched: add a new SD_SHARE_POWERDOMAIN for sched_domain

Vincent Guittot vincent.guittot at linaro.org
Wed Mar 19 08:29:00 EDT 2014

On 19 March 2014 13:01, Peter Zijlstra <peterz at infradead.org> wrote:
> On Tue, Mar 18, 2014 at 06:56:47PM +0100, Vincent Guittot wrote:
>> A new flag SD_SHARE_POWERDOMAIN is created to reflect whether groups of CPUs
>> in a sched_domain level can or not reach different power state. As an example,
>> the flag should be cleared at CPU level if groups of cores can be power gated
>> independently. This information can be used to add load balancing level between
>> group of CPUs than can power gate independantly. The default behavior of the
>> scheduler is to spread tasks across CPUs and groups of CPUs
>> so the flag is set into all sched_domains.
> I suppose that is the part Preeti stumbled over; as did I. Its not set
> at all.

yes, it's confusing. i'm going to update the commit message

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