On Wed, Aug 29, 2018 at 11:39:12AM +0200, Daniel Lezcano wrote: > On 18/07/2018 09:49, Amit Kucheria wrote: > > One thermal zone per cpu is defined > > The thermal zones are very close, especially when the CPUs belong to the > same 'cluster'. Very likely the temperature will propagate from one core > to another core, so when one core reaches the trip0, there is good > chance the other cores will be close and cross the trip0 threshold too. > > Having multiple thermal zones, one per CPU, may trigger an interrupts > storm with the passive polling timer delay. > > Does this board have a cooling device per CPU also ? The cpufreq driver is still under development: https://lore.kernel.org/patchwork/patch/966833/ . It currently doesn't register cooling devices, but since CPUs from a 'cluster' use the same cpufreq policy I think there will be one cooling device per 'cluster'.
