[PATCH v6 05/10] PM / EM: remove em_register_perf_domain

[Lukasz Luba]

Remove old function em_register_perf_domain which is no longer needed.
There is em_dev_register_perf_domain that covers old use cases and new as
well.

Signed-off-by: Lukasz Luba <lukasz.luba@xxxxxxx>
---
 include/linux/energy_model.h |  7 -------
 kernel/power/energy_model.c  | 25 -------------------------
 2 files changed, 32 deletions(-)

diff --git a/include/linux/energy_model.h b/include/linux/energy_model.h
index f6b8077cc875..73c43e4c8a3b 100644
--- a/include/linux/energy_model.h
+++ b/include/linux/energy_model.h
@@ -78,8 +78,6 @@ struct em_data_callback {
 struct em_perf_domain *em_cpu_get(int cpu);
 struct em_perf_domain *em_pd_get(struct device *dev);
 void em_pd_put(struct device *dev);
-int em_register_perf_domain(cpumask_t *span, unsigned int nr_states,
-						struct em_data_callback *cb);
 int em_dev_register_perf_domain(struct device *dev, unsigned int nr_states,
 				struct em_data_callback *cb, cpumask_t *span);
 void em_dev_unregister_perf_domain(struct device *dev);
@@ -181,11 +179,6 @@ static inline int em_pd_nr_perf_states(struct em_perf_domain *pd)
 struct em_data_callback {};
 #define EM_DATA_CB(_active_power_cb) { }
 
-static inline int em_register_perf_domain(cpumask_t *span,
-			unsigned int nr_states, struct em_data_callback *cb)
-{
-	return -EINVAL;
-}
 static inline
 int em_dev_register_perf_domain(struct device *dev, unsigned int nr_states,
 				struct em_data_callback *cb, cpumask_t *span)
diff --git a/kernel/power/energy_model.c b/kernel/power/energy_model.c
index 5967a21b56fc..506d3e39b553 100644
--- a/kernel/power/energy_model.c
+++ b/kernel/power/energy_model.c
@@ -500,31 +500,6 @@ static void _em_release(struct kref *ref)
 	kfree(em_dev);
 }
 
-/**
- * em_register_perf_domain() - Register the Energy Model of a performance domain
- * @span	: Mask of CPUs in the performance domain
- * @nr_states	: Number of capacity states to register
- * @cb		: Callback functions providing the data of the Energy Model
- *
- * Create Energy Model tables for a performance domain using the callbacks
- * defined in cb.
- *
- * If multiple clients register the same performance domain, all but the first
- * registration will be ignored.
- *
- * Return 0 on success
- */
-int em_register_perf_domain(cpumask_t *span, unsigned int nr_states,
-						struct em_data_callback *cb)
-{
-	struct device *cpu_dev;
-
-	cpu_dev = get_cpu_device(cpumask_first(span));
-
-	return em_dev_register_perf_domain(cpu_dev, nr_states, cb, span);
-}
-EXPORT_SYMBOL_GPL(em_register_perf_domain);
-
 /**
  * em_dev_unregister_perf_domain() - Unregister Energy Model (EM) for a device
  * @dev		: Device for which the EM is registered
-- 
2.17.1