Where to place DISABLE/ENABLE INTERRUPT

[Heckler]

Hey Group,

I am writing some code that depends on interrupts for keeping time.
I am a bit confused in understanding where and how often I need to place the ENABLE and DISABLE INTERRUPT directive.

So if I have, say, several subroutines in my code and want to have INTERRUPTS ENABLED in each and all of them (or most of them) then do I need to place an ENABLE / DISABLE before and after each of the subroutines even if they are placed in my code IDE one after another? Or do I just need to ENABLE the whole block of subroutines? and then place a DISABLE at the end of the block?

for example...

ENABLE INTERRUPT

Sub1:
do some stuff
RETURN
'===========
Sub2:
do some other stuff
RETURN

DISABLE INTERRUPT

or do I need to do this...

ENABLE INTERRUPT

Sub1:
do some stuff
RETURN

DISABLE INTERRUPT
'===========
ENABLE INTERRUPT

Sub2:
do some other stuff
RETURN

DISABLE INTERRUPT

thanks in advance