mgt.c:526:8: error: conflicting types for 'count_up'
  void count_up (struct proc *p, void *counter)
       ^
./proc.h:164:6: note: previous declaration is here
void count_up (void *);
     ^
mgt.c:526:48: error: expected ';' at end of declaration
  void count_up (struct proc *p, void *counter)
                                               ^
                                               ;
2 errors generated.