Re: [PATCH] sched/cpufreq: Align trace event behavior of fast switching

[Rafael J. Wysocki]

On Wed, Aug 7, 2019 at 5:34 PM Douglas RAILLARD
<douglas.raillard@xxxxxxx> wrote:
>
> Fast switching path only emits an event for the CPU of interest, whereas the
> regular path emits an event for all the CPUs that had their frequency changed,
> i.e. all the CPUs sharing the same policy.
>
> With the current behavior, looking at cpu_frequency event for a given CPU that
> is using the fast switching path will not give the correct frequency signal.

Do you actually have any systems where that is a problem?  If so, then
what are they?