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da927466a1
Andrii Nakryiko says: ==================== This patch set generalizes libbpf's CO-RE relocation support. In addition to existing field's byte offset relocation, libbpf now supports field existence relocations, which are emitted by Clang when using __builtin_preserve_field_info(<field>, BPF_FIELD_EXISTS). A convenience bpf_core_field_exists() macro is added to bpf_core_read.h BPF-side header, along the bpf_field_info_kind enum containing currently supported types of field information libbpf supports. This list will grow as libbpf gains support for other relo kinds. This patch set upgrades the format of .BTF.ext's relocation record to match latest Clang's format (12 -> 16 bytes). This is not a breaking change, as the previous format hasn't been released yet as part of official Clang version release. v1->v2: - unify bpf_field_info_kind enum and naming changes (Alexei); - added bpf_core_field_exists() to bpf_core_read.h. ==================== Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
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| net | ||
| samples | ||
| scripts | ||
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| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
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| Kbuild | ||
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| 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.