The "ENTRY" thing also deals with profiling - I don't know that adding the
   profiling prologue before an interrupt routine is a good idea or not; this
   is something best looked after by someone who does know positively. I
   merely report the error...


... if i'm profiling, i *espcially* want to know about
interrupt routines...

also, profile support should only be added for those
*asking* for it.


but i'll also defer to what pk has to say :)