| Date | Tue, 24 Mar 2015 14:14:39 +0100 | From | Peter Zijlstra <> | Subject | Re: [RFCv3 PATCH 36/48] sched: Count number of shallower idle-states in struct sched_group_energy |
| |
On Wed, Feb 04, 2015 at 06:31:13PM +0000, Morten Rasmussen wrote: > cpuidle associates all idle-states with each cpu while the energy model > associates them with the sched_group covering the cpus coordinating > entry to the idle-state. To get idle-state power consumption it is > therefore necessary to translate from cpuidle idle-state index to energy > model index. For this purpose it is helpful to know how many idle-states > that are listed in lower level sched_groups (in struct > sched_group_energy).
I think this could use some text to describe how that number is useful.
I suspect is has something to do with bigger domains having more idle modes (package C states etc..).
|