Specified memory pool allocation check

I want to check memory pool allocation status for tag 'ObFl', 'FMis', 'Cbrb' which are associated with ring0 callbacks. I'm doing this to check if kernel callback is properly exists on callback table or linked list.

Easily, you can understand as I want to make windbg's !pool command on driver.
If I input kernel object address(always memory pool), returns allocation status and kernel pool tag. I would be really appreciated if you have solutions.