- * Initialize power management for a specific lcore. It will check and set the
- * governor to userspace for the lcore, get the available frequencies, and
- * prepare to set new lcore frequency.
+ * Set the default power management implementation. If this is not called prior
+ * to rte_power_init(), then auto-detect of the environment will take place.
+ * It is not thread safe.
+ *
+ * @param env
+ * env. The environment in which to initialise Power Management for.
+ *
+ * @return
+ * - 0 on success.
+ * - Negative on error.
+ */
+int rte_power_set_env(enum power_management_env env);
+
+/**
+ * Unset the global environment configuration.
+ * This can only be called after all threads have completed.
+ */
+void rte_power_unset_env(void);
+
+/**
+ * Get the default power management implementation.
+ *
+ * @return
+ * power_management_env The configured environment.
+ */
+enum power_management_env rte_power_get_env(void);
+
+/**
+ * Initialize power management for a specific lcore. If rte_power_set_env() has
+ * not been called then an auto-detect of the environment will start and
+ * initialise the corresponding resources.