1 BPF_F_NO_PREALLOC 1 2 BPF_F_NO_COMMON_LRU 2 3 BPF_F_NUMA_NODE 4 4 BPF_F_RDONLY (1U << 3) 5 BPF_F_WRONLY (1U << 4) 6 BPF_F_STACK_BUILD_ID (1U << 5) 7
