dm_report_get_interval_ms
dm_report_get_interval_ns
dm_report_set_interval_ms
dm_report_set_interval_ns
dm_report_wait
dm_size_to_string
dm_task_get_ioctl_timestamp
dm_task_set_record_timestamp
dm_timestamp_alloc
dm_timestamp_compare
dm_timestamp_delta
dm_timestamp_destroy
dm_timestamp_get