__send_signal 1241 kernel/signal.c return __send_signal(sig, info, t, type, force); __send_signal 1538 kernel/signal.c ret = __send_signal(sig, &info, p, PIDTYPE_TGID, false); __send_signal 2001 kernel/signal.c __send_signal(sig, &info, tsk->parent, PIDTYPE_TGID, false);