Hi William > Is there a Kconfig option that can be used to disable the cpuidle > subsystem such that default_idle_call() is always used ? Is this what you're searching for ? https://elixir.bootlin.com/linux/v5.4-rc2/source/drivers/cpuidle/Kconfig -- « On ne résout pas un problème avec les modes de pensée qui l’ont engendré. » « You cannot solve a problem with the same thinking that created it. »