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94e55c0fda
Add output-only log_true_size field to bpf_prog_load_opts to return bpf_attr->log_true_size value back from bpf() syscall. Note, that we have to drop const modifier from opts in bpf_prog_load(). This could potentially cause compilation error for some users. But the usual practice is to define bpf_prog_load_ops as a local variable next to bpf_prog_load() call and pass pointer to it, so const vs non-const makes no difference and won't even come up in most (if not all) cases. There are no runtime and ABI backwards/forward compatibility issues at all. If user provides old struct bpf_prog_load_opts, libbpf won't set new fields. If old libbpf is provided new bpf_prog_load_opts, nothing will happen either as old libbpf doesn't yet know about this new field. Adding a new variant of bpf_prog_load() just for this seems like a big and unnecessary overkill. As a corroborating evidence is the fact that entire selftests/bpf code base required not adjustment whatsoever. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20230406234205.323208-16-andrii@kernel.org |
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| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .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.