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David Vernet says: ==================== This is v3 of the patchset [0]. v2 can be found at [1]. [0]: https://lore.kernel.org/bpf/Y7kCsjBZ%2FFrsWW%2Fe@maniforge.lan/T/ [1]: https://lore.kernel.org/lkml/20230123171506.71995-1-void@manifault.com/ Changelog: ---------- v2 -> v3: - Go back to the __bpf_kfunc approach from v1. The BPF_KFUNC macro received pushback as it didn't match the more typical EXPORT_SYMBOL* APIs used elsewhere in the kernel. It's the longer term plan, but for now we're proposing something less controversial to fix kfuncs and BTF encoding. - Add __bpf_kfunc macro to newly added cpumask kfuncs. - Add __bpf_kfunc macro to newly added XDP metadata kfuncs, which were failing to be BTF encoded in the thread in [2]. - Update patch description(s) to reference the discussions in [2]. - Add a selftest that validates that a static kfunc with unused args is properly BTF encoded and can be invoked. [2]: https://lore.kernel.org/all/fe5d42d1-faad-d05e-99ad-1c2c04776950@oracle.com/ v1 -> v2: - Wrap entire function signature in BPF_KFUNC macro instead of using __bpf_kfunc tag (Kumar) - Update all kfunc definitions to use this macro. - Update kfuncs.rst documentation to describe and illustrate the macro. - Also clean up a few small parts of kfuncs.rst, e.g. some grammar, and in general making it a bit tighter. ==================== Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> |
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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 Restructured Text 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.