Re: [PATCH 0/6] pmdomain/cpuidle-psci: Support s2idle/s2ram on PREEMPT_RT

[Sebastian Andrzej Siewior]

On 2024-04-29 16:05:25 [+0200], Ulf Hansson wrote:
> The hierarchical PM domain topology and the corresponding domain-idle-states
> are currently disabled on a PREEMPT_RT based configuration. The main reason is
> because spinlocks are turned into sleepable locks on PREEMPT_RT, which means
> genpd and runtime PM can't be use in the atomic idle-path when
> selecting/entering an idle-state.
> 
> For s2idle/s2ram this is an unnecessary limitation that this series intends to
> address. Note that, the support for cpuhotplug is left to future improvements.
> More information about this are available in the commit messages.
> 
> I have tested this on a Dragonboard 410c.

Have you tested this with PREEMPT_RT enabled and if so, which kernel?

> Kind regards
> Ulf Hansson

Sebastian