amap_fd 242 tools/testing/selftests/bpf/test_progs.c int compare_stack_ips(int smap_fd, int amap_fd, int stack_trace_len) amap_fd 256 tools/testing/selftests/bpf/test_progs.c err = bpf_map_lookup_elem(amap_fd, next_key_p, val_buf2); amap_fd 133 tools/testing/selftests/bpf/test_progs.h int compare_stack_ips(int smap_fd, int amap_fd, int stack_trace_len);