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8b334d9183
Reduce log level of BTF loading error to INFO if BTF is not required. Andrii says: Nowadays the expectation is that the BPF program will have a valid .BTF section, so even though .BTF is "optional", I think it's fine to emit a warning for that case (any reasonably recent Clang will produce valid BTF). Ihor's patch is fixing the situation with an outdated host kernel that doesn't understand BTF. libbpf will try to "upload" the program's BTF, but if that fails and the BPF object doesn't use any features that require having BTF uploaded, then it's just an information message to the user, but otherwise can be ignored. Suggested-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Ihor Solodrai <ihor.solodrai@pm.me> Acked-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.