Re: [PATCH 1/2] x86,sched: Add support for frequency invariance

[Quentin Perret]

On Tuesday 17 Sep 2019 at 16:27:46 (+0200), Giovanni Gherdovich wrote:
> I'll check what's the cost of static_cpu_has() and if it's non-negligible I'll
> do what you suggest (x86-specific version of arch_scale_freq_invariant().

In case this is indeed expensive to check, you could always add a static
key, set at boot time, to optimize things a bit ... That might be worth
it since this is called in latency-sensitive paths of the scheduler.

Thanks,
Quentin