info_kill.sh

#!/bin/bash

function info_kill() {
  local frame=0
 
  while caller $frame; do
    ((frame++));
  done
 
  echo "kill $*"
}

function f() {
 info_kill 1
 return
}

echo '>>>> 0'
f 

echo '>>>> 1'
f

echo '>>>> 2'
f

The output is:

>>>> 0
14 f m.sh
19 main m.sh
kill 1
>>>> 1
14 f m.sh
22 main m.sh
kill 1
>>>> 2
14 f m.sh
25 main m.sh
kill 1