On Mon, Feb 22, 2021 at 11:59 AM grantseltzer <grantseltzer@xxxxxxxxx> wrote:
>
> This adds both the CONFIG_DEBUG_INFO_BTF and CONFIG_DEBUG_INFO_BTF_MODULES
> kernel compile option to output of the bpftool feature command.
> This is relevant for developers that want to account for data structure
> definition differences between kernels.
>
> Signed-off-by: Grant Seltzer <grantseltzer@xxxxxxxxx>
> ---
Applied to bpf-next, but adjusted subject to shorter:
"Add kernel/modules BTF presence checks to bpftool feature command"
> tools/bpf/bpftool/feature.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/tools/bpf/bpftool/feature.c b/tools/bpf/bpftool/feature.c
> index 359960a8f..40a88df27 100644
> --- a/tools/bpf/bpftool/feature.c
> +++ b/tools/bpf/bpftool/feature.c
> @@ -336,6 +336,10 @@ static void probe_kernel_image_config(const char *define_prefix)
> { "CONFIG_BPF_JIT", },
> /* Avoid compiling eBPF interpreter (use JIT only) */
> { "CONFIG_BPF_JIT_ALWAYS_ON", },
> + /* Kernel BTF debug information available */
> + { "CONFIG_DEBUG_INFO_BTF", },
> + /* Kernel module BTF debug information available */
> + { "CONFIG_DEBUG_INFO_BTF_MODULES", },
>
> /* cgroups */
> { "CONFIG_CGROUPS", },
> --
> 2.29.2
>
