PM: EM: Introduce em_dev_update_perf_domain() for EM updates

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Add API function em_dev_update_perf_domain() which allows the EM to be
changed safely.

Concurrent updaters are serialized with a mutex and the removal of memory
that will not be used any more is carried out with the help of RCU.

Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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Lukasz Luba 2024-02-08 11:55:45 +00:00 • committed by Rafael J. Wysocki

parent ffcf9bce7a

commit 977230d5d5

2 changed files with 52 additions and 0 deletions

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8

include/linux/energy_model.h

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44

kernel/power/energy_model.c

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