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kbuild: Add skip_encoding_btf_enum64 option to pahole
New pahole (version 1.24) generates by default new BTF_KIND_ENUM64 BTF tag, which is not supported by stable kernel. As a result the kernel with CONFIG_DEBUG_INFO_BTF option will fail to compile with following error: BTFIDS vmlinux FAILED: load BTF from vmlinux: Invalid argument New pahole provides --skip_encoding_btf_enum64 option to skip BTF_KIND_ENUM64 generation and produce BTF supported by stable kernel. Adding this option to scripts/pahole-flags.sh. This change does not have equivalent commit in linus tree, because linus tree has support for BTF_KIND_ENUM64 tag, so it does not need to be disabled. Signed-off-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -17,4 +17,8 @@ if [ "${pahole_ver}" -ge "121" ]; then
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extra_paholeopt="${extra_paholeopt} --btf_gen_floats"
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fi
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if [ "${pahole_ver}" -ge "124" ]; then
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extra_paholeopt="${extra_paholeopt} --skip_encoding_btf_enum64"
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fi
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echo ${extra_paholeopt}
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