lockdep_ok
extern void add_taint(unsigned flag, enum lockdep_ok);
enum lockdep_ok lockdep_ok)
add_taint(flag, lockdep_ok);
void add_taint(unsigned flag, enum lockdep_ok lockdep_ok)
if (lockdep_ok == LOCKDEP_NOW_UNRELIABLE && __debug_locks_off())