diff options
author | Ulf Hansson <ulf.hansson@linaro.org> | 2019-10-10 13:01:48 +0300 |
---|---|---|
committer | Ulf Hansson <ulf.hansson@linaro.org> | 2020-01-02 18:52:18 +0300 |
commit | 9c6ceecb6541954dfc410aa8883f872469326c73 (patch) | |
tree | 1599807edf38ae8b942b60e50efe1d19d16bb02f /drivers/base | |
parent | ce85aef570df406fc8cb360e7351024570ef7d4f (diff) | |
download | linux-9c6ceecb6541954dfc410aa8883f872469326c73.tar.xz |
cpuidle: psci: Support CPU hotplug for the hierarchical model
When the hierarchical CPU topology is used and when a CPU is put offline,
that CPU prevents its PM domain from being powered off, which is because
genpd observes the corresponding attached device as being active from a
runtime PM point of view. Furthermore, any potential master PM domains are
also prevented from being powered off.
To address this limitation, let's add add a new CPU hotplug state
(CPUHP_AP_CPU_PM_STARTING) and register up/down callbacks for it, which
allows us to deal with runtime PM accordingly.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Diffstat (limited to 'drivers/base')
0 files changed, 0 insertions, 0 deletions