diff options
| -rw-r--r-- | kernel/power/em_netlink.h | 14 | ||||
| -rw-r--r-- | kernel/power/energy_model.c | 38 |
2 files changed, 52 insertions, 0 deletions
diff --git a/kernel/power/em_netlink.h b/kernel/power/em_netlink.h index acd186c92d6b..8114b018c73b 100644 --- a/kernel/power/em_netlink.h +++ b/kernel/power/em_netlink.h @@ -10,7 +10,21 @@ #define _EM_NETLINK_H #if defined(CONFIG_ENERGY_MODEL) && defined(CONFIG_NET) +int for_each_em_perf_domain(int (*cb)(struct em_perf_domain*, void *), + void *data); +struct em_perf_domain *em_perf_domain_get_by_id(int id); #else +static inline +int for_each_em_perf_domain(int (*cb)(struct em_perf_domain*, void *), + void *data) +{ + return -EINVAL; +} +static inline +struct em_perf_domain *em_perf_domain_get_by_id(int id) +{ + return NULL; +} #endif #endif /* _EM_NETLINK_H */ diff --git a/kernel/power/energy_model.c b/kernel/power/energy_model.c index 756debf5406a..9e35aba4b113 100644 --- a/kernel/power/energy_model.c +++ b/kernel/power/energy_model.c @@ -17,6 +17,8 @@ #include <linux/sched/topology.h> #include <linux/slab.h> +#include "em_netlink.h" + /* * Mutex serializing the registrations of performance domains and letting * callbacks defined by drivers sleep. @@ -998,3 +1000,39 @@ void em_rebuild_sched_domains(void) */ schedule_work(&rebuild_sd_work); } + +#if defined(CONFIG_ENERGY_MODEL) && defined(CONFIG_NET) +int for_each_em_perf_domain(int (*cb)(struct em_perf_domain*, void *), + void *data) +{ + struct em_perf_domain *pd; + + lockdep_assert_not_held(&em_pd_mutex); + guard(mutex)(&em_pd_list_mutex); + + list_for_each_entry(pd, &em_pd_list, node) { + int ret; + + ret = cb(pd, data); + if (ret) + return ret; + } + + return 0; +} + +struct em_perf_domain *em_perf_domain_get_by_id(int id) +{ + struct em_perf_domain *pd; + + lockdep_assert_not_held(&em_pd_mutex); + guard(mutex)(&em_pd_list_mutex); + + list_for_each_entry(pd, &em_pd_list, node) { + if (pd->id == id) + return pd; + } + + return NULL; +} +#endif |