On Tue, 2020-11-10 at 10:49 +0100, Peter Zijlstra wrote:
> On Tue, Nov 10, 2020 at 09:39:34AM +0100, Giovanni Gherdovich wrote:
>
> > +#ifdef CONFIG_ACPI
> > +void init_freq_invariance_cppc(void)
> > +{
> > + init_freq_invariance(false, true);
> > +
> > + if
On Tue, Nov 10, 2020 at 09:39:34AM +0100, Giovanni Gherdovich wrote:
> +#ifdef CONFIG_ACPI
> +void init_freq_invariance_cppc(void)
> +{
> + init_freq_invariance(false, true);
> +
> + if (static_branch_likely(_scale_freq_key))
> + on_each_cpu(init_counter_refs, NULL, 0);
> +}
>
From: Nathan Fontenot
This is the first pass in creating the ability to calculate the
frequency invariance on AMD systems. This approach uses the CPPC
highest performance and nominal performance values that range from
0 - 255 instead of a high and base frquency. This is because we do
not have
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