ERRNO_OFFSET       16 tools/lib/bpf/libbpf_errno.c #define ERRNO_OFFSET(e)		((e) - __LIBBPF_ERRNO__START)
ERRNO_OFFSET     1612 tools/perf/util/bpf-loader.c #define ERRNO_OFFSET(e)		((e) - __BPF_LOADER_ERRNO__START)