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JP Kobryn says: ==================== allow kfuncs in tracepoint and perf event It is possible to call a cpumask kfunc within a raw tp_btf program but not possible within tracepoint or perf event programs. Currently, the verifier receives -EACCESS from fetch_kfunc_meta() as a result of not finding any kfunc hook associated with these program types. This patch series associates tracepoint and perf event program types with the tracing hook and includes test coverage. Pre-submission CI run: https://github.com/kernel-patches/bpf/pull/7674 v3: - map tracepoint and perf event progs to tracing kfunc hook - expand existing verifier tests for kfuncs - remove explicit registrations from v2 - no longer including kprobes v2: - create new kfunc hooks for tracepoint and perf event - map tracepoint, and perf event prog types to kfunc hooks - register cpumask kfuncs with prog types in focus - expand existing verifier tests for cpumask kfuncs v1: - map tracepoint type progs to tracing kfunc hook - new selftests for calling cpumask kfuncs in tracepoint prog --- ==================== Link: https://lore.kernel.org/r/20240905223812.141857-1-inwardvessel@gmail.com 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 reStructuredText 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.