ac_ppid 83 include/uapi/linux/acct.h __u32 ac_ppid; /* Parent Process ID */ ac_ppid 114 include/uapi/linux/taskstats.h __u32 ac_ppid; /* Parent process ID */ ac_ppid 508 kernel/acct.c ac.ac_ppid = task_tgid_nr_ns(rcu_dereference(current->real_parent), ac_ppid 56 kernel/tsacct.c stats->ac_ppid = pid_alive(tsk) ?