diff options
Diffstat (limited to 'include/linux/energy_model.h')
| -rw-r--r-- | include/linux/energy_model.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/energy_model.h b/include/linux/energy_model.h index 5f842da3bb0c..27911dc1887e 100644 --- a/include/linux/energy_model.h +++ b/include/linux/energy_model.h @@ -5,6 +5,7 @@ #include <linux/device.h> #include <linux/jump_label.h> #include <linux/kobject.h> +#include <linux/kref.h> #include <linux/rcupdate.h> #include <linux/sched/cpufreq.h> #include <linux/sched/topology.h> @@ -39,10 +40,12 @@ struct em_perf_state { /** * struct em_perf_table - Performance states table * @rcu: RCU used for safe access and destruction + * @kref: Reference counter to track the users * @state: List of performance states, in ascending order */ struct em_perf_table { struct rcu_head rcu; + struct kref kref; struct em_perf_state state[]; }; @@ -184,6 +187,8 @@ int em_dev_register_perf_domain(struct device *dev, unsigned int nr_states, struct em_data_callback *cb, cpumask_t *span, bool microwatts); void em_dev_unregister_perf_domain(struct device *dev); +struct em_perf_table __rcu *em_table_alloc(struct em_perf_domain *pd); +void em_table_free(struct em_perf_table __rcu *table); /** * em_pd_get_efficient_state() - Get an efficient performance state from the EM @@ -365,6 +370,12 @@ static inline int em_pd_nr_perf_states(struct em_perf_domain *pd) { return 0; } +static inline +struct em_perf_table __rcu *em_table_alloc(struct em_perf_domain *pd) +{ + return NULL; +} +static inline void em_table_free(struct em_perf_table __rcu *table) {} #endif #endif |