Re: [PATCH v12 2/4] PM / Domains: Add support for CPU devices to genpd

[Daniel Lezcano <daniel.lezcano@linaro.org>]

On 27/02/2019 20:58, Ulf Hansson wrote:
> To enable a device belonging to a CPU to be attached to a PM domain managed
> by genpd, let's do a few changes to it, as to make it convenient to manage
> the specifics around CPUs.
> 
> To be able to quickly find out what CPUs that are attached to a genpd,
> which typically becomes useful from a genpd governor as following changes
> is about to show, let's add a cpumask to the struct generic_pm_domain. At
> the point when a CPU device gets attached to a genpd, let's update the
> genpd's cpumask. Moreover, let's also propagate changes to the cpumask
> upwards in the topology to the master PM domains. In this way, the cpumask
> for a genpd hierarchically reflects all CPUs attached to the topology below
> it.
> 
> Finally, let's make this an opt-in feature, to avoid having to manage CPUs
> and the cpumask for a genpd that doesn't need it. For that reason, let's
> add a new genpd configuration bit, GENPD_FLAG_CPU_DOMAIN.
> 
> Cc: Lina Iyer <ilina@codeaurora.org>
> Co-developed-by: Lina Iyer <lina.iyer@linaro.org>
> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>

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