extern void arm_backtrace(struct pt_regs * const regs, unsigned int depth);
extern int __init op_arm_init(struct oprofile_operations *ops, struct op_arm_model_spec *spec);
extern void arm_backtrace(struct pt_regs * const regs, unsigned int depth);
extern int __init op_arm_init(struct oprofile_operations *ops, struct op_arm_model_spec *spec);