234 struct pid *session_of_pgrp(struct pid *pgrp)  in session_of_pgrp()
237 	struct pid *sid = NULL;  in session_of_pgrp()
256 static int will_become_orphaned_pgrp(struct pid *pgrp, struct task_struct *ignored_task)  in will_become_orphaned_pgrp()
285 static int has_stopped_jobs(struct pid *pgrp)  in has_stopped_jobs()
307 	struct pid *pgrp = task_pgrp(tsk);  in kill_orphaned_pgrp()
367 void __set_special_pids(struct pid *pid)  in __set_special_pids()  argument
370 	pid_t nr = pid_nr(pid);  in __set_special_pids()
372 	if (task_session(curr) != pid) {  in __set_special_pids()
373 		change_pid(curr, PIDTYPE_SID, pid);  in __set_special_pids()
376 	if (task_pgrp(curr) != pid) {  in __set_special_pids()
377 		change_pid(curr, PIDTYPE_PGID, pid);  in __set_special_pids()
382 static void set_special_pids(struct pid *pid)  in set_special_pids()  argument
385 	__set_special_pids(pid);  in set_special_pids()
1025 	if (unlikely(!tsk->pid))  in do_exit()
1209 static struct pid *task_pid_type(struct task_struct *task, enum pid_type type)  in task_pid_type()
1211 	struct pid *pid = NULL;  in task_pid_type()  local
1213 		pid = task->pids[type].pid;  in task_pid_type()
1215 		pid = task->group_leader->pids[type].pid;  in task_pid_type()
1216 	return pid;  in task_pid_type()
1219 static int eligible_child(enum pid_type type, struct pid *pid, int options,  in eligible_child()  argument
1225 		if (task_pid_type(p, type) != pid)  in eligible_child()
1245 static int wait_noreap_copyout(struct task_struct *p, pid_t pid, uid_t uid,  in wait_noreap_copyout()  argument
1260 		retval = put_user(pid, &infop->si_pid);  in wait_noreap_copyout()
1266 		retval = pid;  in wait_noreap_copyout()
1282 	pid_t pid = task_pid_vnr(p);  in wait_task_zombie()  local
1301 		return wait_noreap_copyout(p, pid, uid, why,  in wait_task_zombie()
1407 		retval = put_user(pid, &infop->si_pid);  in wait_task_zombie()
1411 		retval = pid;  in wait_task_zombie()
1449 	pid_t pid;  in wait_task_stopped()  local
1489 	pid = task_pid_vnr(p);  in wait_task_stopped()
1494 		return wait_noreap_copyout(p, pid, uid,  in wait_task_stopped()
1510 		retval = put_user(pid, &infop->si_pid);  in wait_task_stopped()
1514 		retval = pid;  in wait_task_stopped()
1532 	pid_t pid;  in wait_task_continued()  local
1552 	pid = task_pid_vnr(p);  in wait_task_continued()
1562 			retval = pid;  in wait_task_continued()
1564 		retval = wait_noreap_copyout(p, pid, uid,  in wait_task_continued()
1584 			      enum pid_type type, struct pid *pid, int options,  in wait_consider_task()  argument
1588 	int ret = eligible_child(type, pid, options, p);  in wait_consider_task()
1645 			  enum pid_type type, struct pid *pid, int options,  in do_wait_thread()  argument
1657 						     type, pid, options,  in do_wait_thread()
1668 			  enum pid_type type, struct pid *pid, int options,  in ptrace_do_wait()  argument
1681 					     type, pid, options,  in ptrace_do_wait()
1690 static long do_wait(enum pid_type type, struct pid *pid, int options,  in do_wait()  argument
1698 	trace_sched_process_wait(pid);  in do_wait()
1708 	if ((type < PIDTYPE_MAX) && (!pid || hlist_empty(&pid->tasks[type])))  in do_wait()
1716 						type, pid, options,  in do_wait()
1720 						    type, pid, options,  in do_wait()
1777 	struct pid *pid = NULL;  in SYSCALL_DEFINE5()  local
1805 		pid = find_get_pid(upid);  in SYSCALL_DEFINE5()
1806 	ret = do_wait(type, pid, options, infop, NULL, ru);  in SYSCALL_DEFINE5()
1807 	put_pid(pid);  in SYSCALL_DEFINE5()
1817 	struct pid *pid = NULL;  in SYSCALL_DEFINE4()  local
1829 		pid = find_get_pid(-upid);  in SYSCALL_DEFINE4()
1832 		pid = get_pid(task_pgrp(current));  in SYSCALL_DEFINE4()
1835 		pid = find_get_pid(upid);  in SYSCALL_DEFINE4()
1838 	ret = do_wait(type, pid, options | WEXITED, NULL, stat_addr, ru);  in SYSCALL_DEFINE4()
1839 	put_pid(pid);  in SYSCALL_DEFINE4()
1852 SYSCALL_DEFINE3(waitpid, pid_t, pid, int __user *, stat_addr, int, options)  in SYSCALL_DEFINE3()  argument
1854 	return sys_wait4(pid, stat_addr, options, NULL);  in SYSCALL_DEFINE3()