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a7b0fa352e
Declares and defines a pointer of the shadow type for each struct_ops map. The code generator will create an anonymous struct type as the shadow type for each struct_ops map. The shadow type is translated from the original struct type of the map. The user of the skeleton use pointers of them to access the values of struct_ops maps. However, shadow types only supports certain types of fields, including scalar types and function pointers. Any fields of unsupported types are translated into an array of characters to occupy the space of the original field. Function pointers are translated into pointers of the struct bpf_program. Additionally, padding fields are generated to occupy the space between two consecutive fields. The pointers of shadow types of struct_osp maps are initialized when *__open_opts() in skeletons are called. For a map called FOO, the user can access it through the pointer at skel->struct_ops.FOO. Signed-off-by: Kui-Feng Lee <thinker.li@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Reviewed-by: Quentin Monnet <quentin@isovalent.com> Link: https://lore.kernel.org/bpf/20240229064523.2091270-4-thinker.li@gmail.com |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
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| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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.