int cfs_trace_copyout_string(char __user *usr_buffer, int usr_buffer_nob,
const char *knl_str, char *append);
-int cfs_trace_allocate_string_buffer(char **str, int nob);
int cfs_trace_dump_debug_buffer_usrstr(void __user *usr_str, int usr_str_nob);
int cfs_trace_daemon_command(char *str);
int cfs_trace_daemon_command_usrstr(void __user *usr_str, int usr_str_nob);