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51746f9486
Quentin Monnet says: ==================== This set adds a new command BPF_BTF_GET_NEXT_ID to the bpf() system call, adds the relevant API function in libbpf, and uses it in bpftool to list all BTF objects loaded on the system (and to dump the ids of maps and programs associated with them, if any). The main motivation of listing BTF objects is introspection and debugging purposes. By getting BPF program and map information, it should already be possible to list all BTF objects associated to at least one map or one program. But there may be unattached BTF objects, held by a file descriptor from a user space process only, and we may want to list them too. As a side note, it also turned useful for examining the BTF objects attached to offloaded programs, which would not show in program information because the BTF id is not copied when retrieving such info. A fix is in progress on that side. v2: - Rebase patch with new libbpf function on top of Andrii's changes regarding libbpf versioning. ==================== Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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.