diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/lib/devcom.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/lib/devcom.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/devcom.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/devcom.c index 00e67910e3ee..e8e50563e956 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lib/devcom.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/devcom.c @@ -31,6 +31,7 @@ struct mlx5_devcom_comp { struct kref ref; bool ready; struct rw_semaphore sem; + struct lock_class_key lock_key; }; struct mlx5_devcom_comp_dev { @@ -119,6 +120,8 @@ mlx5_devcom_comp_alloc(u64 id, u64 key, mlx5_devcom_event_handler_t handler) comp->key = key; comp->handler = handler; init_rwsem(&comp->sem); + lockdep_register_key(&comp->lock_key); + lockdep_set_class(&comp->sem, &comp->lock_key); kref_init(&comp->ref); INIT_LIST_HEAD(&comp->comp_dev_list_head); @@ -133,6 +136,7 @@ mlx5_devcom_comp_release(struct kref *ref) mutex_lock(&comp_list_lock); list_del(&comp->comp_list); mutex_unlock(&comp_list_lock); + lockdep_unregister_key(&comp->lock_key); kfree(comp); } @@ -383,3 +387,24 @@ void *mlx5_devcom_get_next_peer_data_rcu(struct mlx5_devcom_comp_dev *devcom, *pos = tmp; return data; } + +void mlx5_devcom_comp_lock(struct mlx5_devcom_comp_dev *devcom) +{ + if (IS_ERR_OR_NULL(devcom)) + return; + down_write(&devcom->comp->sem); +} + +void mlx5_devcom_comp_unlock(struct mlx5_devcom_comp_dev *devcom) +{ + if (IS_ERR_OR_NULL(devcom)) + return; + up_write(&devcom->comp->sem); +} + +int mlx5_devcom_comp_trylock(struct mlx5_devcom_comp_dev *devcom) +{ + if (IS_ERR_OR_NULL(devcom)) + return 0; + return down_write_trylock(&devcom->comp->sem); +} |