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Andrii Nakryiko 189f1a976e libbpf: Fix no-args func prototype BTF dumping syntax
For all these years libbpf's BTF dumper has been emitting not strictly
valid syntax for function prototypes that have no input arguments.

Instead of `int (*blah)()` we should emit `int (*blah)(void)`.

This is not normally a problem, but it manifests when we get kfuncs in
vmlinux.h that have no input arguments. Due to compiler internal
specifics, we get no BTF information for such kfuncs, if they are not
declared with proper `(void)`.

The fix is trivial. We also need to adjust a few ancient tests that
happily assumed `()` is correct.

Fixes: 351131b51c ("libbpf: add btf_dump API for BTF-to-C conversion")
Reported-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://lore.kernel.org/bpf/20240712224442.282823-1-andrii@kernel.org
2024-07-17 22:42:47 +02:00
arch Networking changes for 6.11. Not much excitement - a handful of large 2024-07-16 19:28:34 -07:00
block for-6.11/block-20240710 2024-07-15 14:20:22 -07:00
certs kbuild: use $(src) instead of $(srctree)/$(src) for source directory 2024-05-10 04:34:52 +09:00
crypto This push fixes a bug in the new ecc P521 code as well as a buggy 2024-05-20 08:47:54 -07:00
Documentation Networking changes for 6.11. Not much excitement - a handful of large 2024-07-16 19:28:34 -07:00
drivers eth: fbnic: fix s390 build. 2024-07-17 06:25:14 -07:00
fs Networking changes for 6.11. Not much excitement - a handful of large 2024-07-16 19:28:34 -07:00
include Networking changes for 6.11. Not much excitement - a handful of large 2024-07-16 19:28:34 -07:00
init gcc: disable '-Warray-bounds' for gcc-9 2024-06-15 10:43:04 -07:00
io_uring Networking changes for 6.11. Not much excitement - a handful of large 2024-07-16 19:28:34 -07:00
ipc ipc: mqueue: remove assignment from IS_ERR argument 2024-07-09 06:47:40 +02:00
kernel Networking changes for 6.11. Not much excitement - a handful of large 2024-07-16 19:28:34 -07:00
lib Networking changes for 6.11. Not much excitement - a handful of large 2024-07-16 19:28:34 -07:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
mm linux_kselftest-kunit-6.11-rc1 2024-07-16 17:42:14 -07:00
net Networking changes for 6.11. Not much excitement - a handful of large 2024-07-16 19:28:34 -07:00
rust for-6.11/block-20240710 2024-07-15 14:20:22 -07:00
samples bpf-next-for-netdev 2024-05-28 07:27:29 -07:00
scripts Networking changes for 6.11. Not much excitement - a handful of large 2024-07-16 19:28:34 -07:00
security Performance events changes for v6.11: 2024-07-16 17:13:31 -07:00
sound Updates for timers, timekeeping and related functionality: 2024-07-15 15:03:09 -07:00
tools libbpf: Fix no-args func prototype BTF dumping syntax 2024-07-17 22:42:47 +02:00
usr kbuild: use $(src) instead of $(srctree)/$(src) for source directory 2024-05-10 04:34:52 +09:00
virt KVM fixes for 6.10 2024-06-21 08:03:55 -04:00
.clang-format clang-format: Update with v6.7-rc4's for_each macro list 2023-12-08 23:54:38 +01:00
.cocciconfig
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore Add Jeff Kirsher to .get_maintainer.ignore 2024-03-08 11:36:54 +00:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore kbuild: create a list of all built DTB files 2024-02-19 18:20:39 +09:00
.mailmap MAINTAINERS: Update email address of Naveen 2024-07-17 19:27:18 +02:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS Scheduler changes for v6.11: 2024-07-16 17:00:50 -07:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS MAINTAINERS: Update powerpc BPF JIT maintainers 2024-07-17 19:27:18 +02:00
Makefile asm-generic updates for 6.11 2024-07-16 12:09:03 -07:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

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.