taglinefilesource code
wait_chldexit168include/linux/sched.hstruct wait_queue *wait_chldexit;  /* for wait4() */
wait_chldexit79kernel/exit.cwake_up_interruptible(&tsk->p_pptr->wait_chldexit);
wait_chldexit493kernel/exit.cadd_wait_queue(&current->wait_chldexit,&wait);
wait_chldexit565kernel/exit.cremove_wait_queue(&current->wait_chldexit,&wait);