Re: [PATCH 3/3] cpuidle/menu: add per cpu pm_qos_resume_latency consideration

From: Alex Shi
Date: Fri Jan 20 2017 - 03:36:10 EST




On 01/20/2017 05:43 AM, Rafael J. Wysocki wrote:
> The above may be problematic if the constraints change relatively
> often. It is global and it will affect all of the CPUs in the system
> every time and now think about systems with hundreds of them.

Yes, the disadvantage is waking up all idle cpus when value changed. As
to the multi core concern, maybe a per cpu notifier way is better? But
that's another story of pm_qos...

So Rafael, any comments for this patch version?

Regards
Alex