Commit a1b17c9a authored by Changwoo Min's avatar Changwoo Min Committed by Rafael J. Wysocki
Browse files

PM: EM: Notify an event when the performance domain changes 



Send an event to userspace when a performance domain is created or deleted,
or its energy model is updated.

Signed-off-by: default avatarChangwoo Min <changwoo@igalia.com>
Reviewed-by: default avatarLukasz Luba <lukasz.luba@arm.com>
Link: https://patch.msgid.link/20251020220914.320832-11-changwoo@igalia.com


Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent b95a0c02

kernel/power/energy_model.c

+5 −0
Original line number Diff line number Diff line
@@ -352,6 +352,8 @@ int em_dev_update_perf_domain(struct device *dev, 
	em_table_free(old_table);



	mutex_unlock(&em_pd_mutex);



	em_notify_pd_updated(pd);

	return 0;

}

EXPORT_SYMBOL_GPL(em_dev_update_perf_domain);
@@ -696,6 +698,7 @@ int em_dev_register_pd_no_update(struct device *dev, unsigned int nr_states, 
	list_add_tail(&dev->em_pd->node, &em_pd_list);

	mutex_unlock(&em_pd_list_mutex);



	em_notify_pd_created(dev->em_pd);

	return ret;

}

EXPORT_SYMBOL_GPL(em_dev_register_pd_no_update);
@@ -718,6 +721,8 @@ void em_dev_unregister_perf_domain(struct device *dev) 
	list_del_init(&dev->em_pd->node);

	mutex_unlock(&em_pd_list_mutex);



	em_notify_pd_deleted(dev->em_pd);



	/*

	 * The mutex separates all register/unregister requests and protects

	 * from potential clean-up/setup issues in the debugfs directories.