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Add support for extracting API specifications from kernel-doc comments
and generating C macro invocations for the kernel API specification
framework.
Changes include:
- New kdoc_apispec.py module for generating API spec macros
- Updates to tools/docs/kernel-doc to support the -apispec output format
- Build system integration in Makefile.build
- Support for API-specific sections in kernel-doc comments
kernel-doc recognises the KAPI sections only in -apispec mode, so its
other output formats are unchanged. With CONFIG_KAPI_SPEC=y, Kbuild
generates <file>.apispec.h for each built source that has a contexts:
or context-flags: line plus another KAPI section, and force-includes it
when compiling that source.
Assisted-by: LLM
Signed-off-by: Sasha Levin <sashal@kernel.org>
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