PID_MAX_LIMIT 3320 fs/proc/base.c if (pos >= PID_MAX_LIMIT + TGID_OFFSET) PID_MAX_LIMIT 3355 fs/proc/base.c ctx->pos = PID_MAX_LIMIT + TGID_OFFSET; PID_MAX_LIMIT 37 kernel/cgroup/pids.c #define PIDS_MAX (PID_MAX_LIMIT + 1ULL) PID_MAX_LIMIT 30 kernel/hung_task.c int __read_mostly sysctl_hung_task_check_count = PID_MAX_LIMIT; PID_MAX_LIMIT 65 kernel/pid.c int pid_max_max = PID_MAX_LIMIT; PID_MAX_LIMIT 527 kernel/pid.c BUILD_BUG_ON(PID_MAX_LIMIT >= PIDNS_ADDING); PID_MAX_LIMIT 6516 kernel/trace/ftrace.c #define FTRACE_NO_PIDS (void *)(PID_MAX_LIMIT + 1)