Extern or forward variable declaration at include/linux/pid.h, line 102 References: arch/x86/kernel/cpu/resctrl/rdtgroup.c, line 777 arch/x86/kernel/fpu/xstate.c, line 1280 fs/fuse/fuse_i.h, line 545 fs/locks.c, line 2197 fs/locks.c, line 2720 fs/locks.c, line 2819 fs/proc/array.c, line 142 fs/proc/array.c, line 426 fs/proc/array.c, line 452 fs/proc/array.c, line 646 fs/proc/array.c, line 652 fs/proc/array.c, line 658 fs/proc/base.c, line 385 fs/proc/base.c, line 425 fs/proc/base.c, line 473 fs/proc/base.c, line 547 fs/proc/base.c, line 593 fs/proc/base.c, line 637 fs/proc/base.c, line 766 fs/proc/base.c, line 1440 fs/proc/base.c, line 2413 fs/proc/base.c, line 2988 fs/proc/base.c, line 2994 fs/proc/base.c, line 3133 fs/proc/base.c, line 3145 fs/proc/base.c, line 3154 fs/proc/base.c, line 3369 fs/proc/base.c, line 3407 fs/proc/base.c, line 3437 fs/proc/base.c, line 3669 fs/proc/base.c, line 3713 fs/proc/base.c, line 3782 fs/proc/internal.h, line 88 fs/proc/internal.h, line 152 fs/proc/internal.h, line 154 fs/proc/internal.h, line 156 fs/proc/internal.h, line 158 fs/proc/root.c, line 33 include/linux/cgroup.h, line 120 include/linux/cpuset.h, line 102 include/linux/fs_context.h, line 23 include/linux/perf_event.h, line 758 include/linux/pid.h, line 56 include/linux/pid.h, line 111 include/linux/pid.h, line 112 include/linux/pid.h, line 126 include/linux/pid.h, line 133 include/linux/pid.h, line 135 include/linux/pid.h, line 138 include/linux/pid.h, line 150 include/linux/pid.h, line 152 include/linux/pid.h, line 188 include/linux/pid_namespace.h, line 19 include/linux/pid_namespace.h, line 26 include/linux/pid_namespace.h, line 36 include/linux/pid_namespace.h, line 41 include/linux/pid_namespace.h, line 41 include/linux/pid_namespace.h, line 48 include/linux/pid_namespace.h, line 49 include/linux/pid_namespace.h, line 50 include/linux/pid_namespace.h, line 51 include/linux/pid_namespace.h, line 52 include/linux/pid_namespace.h, line 57 include/linux/pid_namespace.h, line 57 include/linux/pid_namespace.h, line 62 include/linux/pid_namespace.h, line 63 include/linux/pid_namespace.h, line 70 include/linux/pid_namespace.h, line 74 include/linux/pid_namespace.h, line 79 include/linux/pid_namespace.h, line 85 include/linux/proc_fs.h, line 62 include/linux/proc_fs.h, line 148 include/linux/proc_fs.h, line 217 include/linux/ptrace.h, line 187 include/linux/sched.h, line 56 include/linux/sched.h, line 1524 include/linux/sched.h, line 1531 include/linux/sched.h, line 1562 include/linux/sched.h, line 1573 include/linux/sched.h, line 1583 include/linux/sched.h, line 1593 include/linux/sched.h, line 1909 ipc/shm.c, line 1739 ipc/util.c, line 775 ipc/util.c, line 779 kernel/acct.c, line 91 kernel/acct.c, line 144 kernel/acct.c, line 197 kernel/acct.c, line 297 kernel/acct.c, line 503 kernel/acct.c, line 573 kernel/acct.c, line 590 kernel/bpf/helpers.c, line 572 kernel/bpf/task_iter.c, line 13 kernel/bpf/task_iter.c, line 24 kernel/bpf/task_iter.c, line 140 kernel/bpf/task_iter.c, line 310 kernel/cgroup/cgroup-v1.c, line 182 kernel/cgroup/cgroup-v1.c, line 285 kernel/cgroup/cgroup.c, line 5934 kernel/cgroup/cpuset.c, line 3680 kernel/exit.c, line 522 kernel/fork.c, line 1831 kernel/pid.c, line 75 kernel/pid.c, line 107 kernel/pid.c, line 135 kernel/pid.c, line 159 kernel/pid.c, line 165 kernel/pid.c, line 302 kernel/pid.c, line 309 kernel/pid.c, line 413 kernel/pid.c, line 472 kernel/pid.c, line 493 kernel/pid.c, line 507 kernel/pid.c, line 518 kernel/pid_namespace.c, line 71 kernel/pid_namespace.c, line 72 kernel/pid_namespace.c, line 74 kernel/pid_namespace.c, line 126 kernel/pid_namespace.c, line 126 kernel/pid_namespace.c, line 134 kernel/pid_namespace.c, line 142 kernel/pid_namespace.c, line 143 kernel/pid_namespace.c, line 152 kernel/pid_namespace.c, line 154 kernel/pid_namespace.c, line 166 kernel/pid_namespace.c, line 262 kernel/pid_namespace.c, line 300 kernel/pid_namespace.c, line 329 kernel/pid_namespace.c, line 331 kernel/pid_namespace.c, line 336 kernel/pid_namespace.c, line 349 kernel/pid_namespace.c, line 378 kernel/pid_namespace.c, line 379 kernel/pid_namespace.c, line 409 kernel/pid_namespace.c, line 410 kernel/pid_namespace.c, line 453 kernel/reboot.c, line 314 kernel/sched/debug.c, line 946 kernel/seccomp.c, line 2378 kernel/signal.c, line 3780 kernel/signal.c, line 3781 kernel/taskstats.c, line 156 kernel/tsacct.c, line 21 net/ipv6/ip6_flowlabel.c, line 747