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    SubjectRe: [PATCH v4 10/10] cpufreq: intel_pstate: Use CPPC to get max performance
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    On Thu, 2016-09-22 at 20:56 +0200, Thomas Gleixner wrote:
    > On Thu, 22 Sep 2016, Tim Chen wrote:
    > >
    > > On Wed, 2016-09-21 at 22:30 +0200, Rafael J. Wysocki wrote:
    > > >
    > > > My current understanding is that we need to rebuild sched domains
    > > > after setting the priorities, 
    > > No, that's not true.  We need to rebuild the sched domains only
    > > when the sched domain flags are changed, not when we are changing
    > > the priorities.  Only the sched domain flag is a property of
    > > the sched domain. CPU priority values are not part of sched domain.
    > >
    > > Morten had similar question about whether we need to rebuild sched domain
    > > when we change cpu priorities when we first post the patches. 
    > > Peter has explained that it wasn't necessary.
    > > http://lkml.iu.edu/hypermail/linux/kernel/1608.3/01753.html
    > And why is there no explanation in form of a comment in the code?

    Sure, I'll add a comment.

    Thanks.

    Tim


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