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2024-05-10 10ebd8556b7990499c896a550e3d416b444211e6

 kernel/Documentation/gpu/introduction.rst
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 Also read the :ref:`guidelines for the kernel documentation at large <doc_guide>`.
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+Documentation Requirements for kAPI
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+-----------------------------------
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+
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+All kernel APIs exported to other modules must be documented, including their
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+datastructures and at least a short introductory section explaining the overall
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+concepts. Documentation should be put into the code itself as kerneldoc comments
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+as much as reasonable.
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+
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+Do not blindly document everything, but document only what's relevant for driver
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+authors: Internal functions of drm.ko and definitely static functions should not
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+have formal kerneldoc comments. Use normal C comments if you feel like a comment
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+is warranted. You may use kerneldoc syntax in the comment, but it shall not
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+start with a /** kerneldoc marker. Similar for data structures, annotate
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+anything entirely private with ``/* private: */`` comments as per the
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+documentation guide.
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+
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70
 Getting Started
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 ===============
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