kernel COMPILE 2.4.18 error

I am getting error as


init/main.c : in function 'profile_setup':
init/main.c :144 : 'prof_shift' undeclared (first use in this function)
init/main.c :144 : (each undeclared identifier reported only once)
init/main.c :in function 'start_kernel':
init/main.c :580 : 'prof_shift' undeclared(first use in this function)
init/main.c :583 : 'prof_len' undeclared(first use in this function)
init/main.c :587 : 'prof_buffer' undeclared(first use in this function)
make : **[init/main.o] Error 1


reply me to avoid it

.