cpumap_kthread_cnt_map_fd 47 samples/bpf/xdp_redirect_cpu_user.c static int cpumap_kthread_cnt_map_fd; cpumap_kthread_cnt_map_fd 481 samples/bpf/xdp_redirect_cpu_user.c fd = cpumap_kthread_cnt_map_fd; cpumap_kthread_cnt_map_fd 647 samples/bpf/xdp_redirect_cpu_user.c cpumap_kthread_cnt_map_fd = cpumap_kthread_cnt_map_fd 661 samples/bpf/xdp_redirect_cpu_user.c cpumap_kthread_cnt_map_fd < 0 || cpus_available_map_fd < 0 ||