child_wait        931 kernel/exit.c  	wait_queue_entry_t		child_wait;
child_wait       1401 kernel/exit.c  						child_wait);
child_wait       1426 kernel/exit.c  	init_waitqueue_func_entry(&wo->child_wait, child_wait_callback);
child_wait       1427 kernel/exit.c  	wo->child_wait.private = current;
child_wait       1428 kernel/exit.c  	add_wait_queue(&current->signal->wait_chldexit, &wo->child_wait);
child_wait       1469 kernel/exit.c  	remove_wait_queue(&current->signal->wait_chldexit, &wo->child_wait);