On 10/26/2015 04:42 PM, Nitish Ambastha wrote:
Dear All
Hi Nitish,
I am going through the EAS project work and trying to port them on my ARM based SMP system (3.10 Linux version) Could you please help me clarify, will EAS be helpful in terms of power/performance for SMP systems as well?
It depends on the topology (single/multi-cluster) and the cpufreq (per cpu/cluster frequency scaling)/cpuidle (per cpu/cluster power gating) capabilities of your platform. Could you share them with the list please?
Leo Yan (Linaro) is evaluating EAS on an dual-cluster SMP machine (hikey) with per-system !!! frequency scaling and per cpu power gating.
He already figured that some of the code paths in energy_aware_wake_cpu() have to be adapted to fully work for dual-cluster SMP systems (see email thread of 22/46 and 32/46 of EAS RFCv5 on LKML).
Do you really have to use 3.10? The back-port effort is IMHO way too high ...
-- Dietmar
[...]