Re: [PATCH 0/3] cpufreq: Replace timers with utilization update callbacks

From: Peter Zijlstra
Date: Thu Feb 11 2016 - 10:29:45 EST


On Thu, Feb 11, 2016 at 01:08:28PM +0100, Rafael J. Wysocki wrote:
> > Not really pretty though. It blows a bit that you require this callback
> > to be periodic (in order to replace a timer).
>
> We need it for now, but that's because of how things work on the cpufreq side.

Right, maybe stick a big comment on cpufreq_trigger_update() noting its
a big ugly hack and will go away 'soon'.

> The last version is here:
>
> https://patchwork.kernel.org/patch/8275271/
>
> but it has the additional hooks for RT/DL which you seem to be
> thinking are a mistake.

As long as we make sure everbody knows they're a band-aid and will be
taken out back and shot that should be fine for a little while I
suppose.