> commit 26045ea1708c6551142fa4c155e708f9985b0114
> Author: Monty <monty@mariadb.org>
> Date:   Wed Aug 12 20:29:55 2020 +0300
>
>     Reduce usage of strlen()
>    
> diff --git a/storage/maria/ha_maria.cc b/storage/maria/ha_maria.cc
> index 3c43595533f..d949687283f 100644
> --- a/storage/maria/ha_maria.cc
> +++ b/storage/maria/ha_maria.cc
> @@ -407,13 +407,13 @@ static handler *maria_create_handler(handlerton *hton,
>  }
>  
>  
> -static void _ma_check_print(HA_CHECK *param, const char* msg_type,
> +static void _ma_check_print(HA_CHECK *param, const LEX_CSTRING *msg_type,
>                              const char *msgbuf)

I would also suggest passing LEX_CSTRING by value. Its size is not more than
two pointers, so it can be passed by registers by most ABIs.
Passing it by a pointer add a second dereference, which is costy

>  {
> -  if (msg_type == MA_CHECK_INFO)
> +  if (msg_type == &MA_CHECK_INFO)
>      sql_print_information("%s.%s: %s", param->db_name, param->table_name,
>                            msgbuf);
> -  else if (msg_type == MA_CHECK_WARNING)
> +  else if (msg_type == &MA_CHECK_WARNING)
>      sql_print_warning("%s.%s: %s", param->db_name, param->table_name,
>                        msgbuf);
>    else
> @@ -423,7 +423,7 @@ static void _ma_check_print(HA_CHECK *param, const char* msg_type,
>  
>  // collect errors printed by maria_check routines
>  
> -static void _ma_check_print_msg(HA_CHECK *param, const char *msg_type,
> +static void _ma_check_print_msg(HA_CHECK *param, const LEX_CSTRING *msg_type,
>                                  const char *fmt, va_list args)
>  {
>    THD *thd= (THD *) param->thd;