699 	struct pid *leader_pid;
720 	struct pid *tty_old_pgrp;
1483 	pid_t pid;  member
1872 static inline struct pid *task_pid(struct task_struct *task)  in task_pid()
1874 	return task->pids[PIDTYPE_PID].pid;  in task_pid()
1877 static inline struct pid *task_tgid(struct task_struct *task)  in task_tgid()
1879 	return task->group_leader->pids[PIDTYPE_PID].pid;  in task_tgid()
1887 static inline struct pid *task_pgrp(struct task_struct *task)  in task_pgrp()
1889 	return task->group_leader->pids[PIDTYPE_PGID].pid;  in task_pgrp()
1892 static inline struct pid *task_session(struct task_struct *task)  in task_session()
1894 	return task->group_leader->pids[PIDTYPE_SID].pid;  in task_session()
1917 	return tsk->pid;  in task_pid_nr()
1948 	pid_t pid = 0;  in task_ppid_nr_ns()  local
1952 		pid = task_tgid_nr_ns(rcu_dereference(tsk->real_parent), ns);  in task_ppid_nr_ns()
1955 	return pid;  in task_ppid_nr_ns()
2004 	return p->pids[PIDTYPE_PID].pid != NULL;  in pid_alive()
2021 extern struct pid *cad_pid;
2397 	return p->pid == 0;  in is_idle_task()
2498 extern int __kill_pgrp_info(int sig, struct siginfo *info, struct pid *pgrp);
2499 extern int kill_pid_info(int sig, struct siginfo *info, struct pid *pid);
2500 extern int kill_pid_info_as_cred(int, struct siginfo *, struct pid *,
2502 extern int kill_pgrp(struct pid *pid, int sig, int priv);
2503 extern int kill_pid(struct pid *pid, int sig, int priv);
3113 extern long sched_setaffinity(pid_t pid, const struct cpumask *new_mask);
3114 extern long sched_getaffinity(pid_t pid, struct cpumask *mask);