Re: [RFC v1 1/2] kbuild: add arch specific dependency for BTF support

[Masahiro Yamada]

Hi.

On Tue, Jan 28, 2020 at 4:36 AM Brendan Higgins
<brendanhiggins@xxxxxxxxxx> wrote:
>
> Some archs (like UM) do not build with CONFIG_DEBUG_INFO_BTF=y, so add
> an options for archs to select to opt-in or out of BTF typeinfo support.


Could you use a different subject prefix (e.g. "btf:") ?

This is unrelated to kbuild.

Thanks.


> Signed-off-by: Brendan Higgins <brendanhiggins@xxxxxxxxxx>
> ---
>  lib/Kconfig.debug | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
> index e4676b992eae9..f5bcb391f1b7d 100644
> --- a/lib/Kconfig.debug
> +++ b/lib/Kconfig.debug
> @@ -238,9 +238,12 @@ config DEBUG_INFO_DWARF4
>           But it significantly improves the success of resolving
>           variables in gdb on optimized code.
>
> +config ARCH_NO_BTF_TYPEINFO
> +       bool
> +
>  config DEBUG_INFO_BTF
>         bool "Generate BTF typeinfo"
> -       depends on DEBUG_INFO
> +       depends on DEBUG_INFO && !ARCH_NO_BTF_TYPEINFO
>         help
>           Generate deduplicated BTF type information from DWARF debug info.
>           Turning this on expects presence of pahole tool, which will convert
> --
> 2.25.0.341.g760bfbb309-goog
>


-- 
Best Regards
Masahiro Yamada