Dave Marchevsky 391145ba2a bpf: Add __bpf_kfunc_{start,end}_defs macros ... BPF kfuncs are meant to be called from BPF programs. Accordingly, most kfuncs are not called from anywhere in the kernel, which the -Wmissing-prototypes warning is unhappy about. We've peppered __diag_ignore_all("-Wmissing-prototypes", ... everywhere kfuncs are defined in the codebase to suppress this warning. This patch adds two macros meant to bound one or many kfunc definitions. All existing kfunc definitions which use these __diag calls to suppress -Wmissing-prototypes are migrated to use the newly-introduced macros. A new __diag_ignore_all - for "-Wmissing-declarations" - is added to the __bpf_kfunc_start_defs macro based on feedback from Andrii on an earlier version of this patch [0] and another recent mailing list thread [1]. In the future we might need to ignore different warnings or do other kfunc-specific things. This change will make it easier to make such modifications for all kfunc defs. [0]: https://lore.kernel.org/bpf/CAEf4BzaE5dRWtK6RPLnjTW-MW9sx9K3Fn6uwqCTChK2Dcb1Xig@mail.gmail.com/ [1]: https://lore.kernel.org/bpf/ZT+2qCc%2FaXep0%2FLf@krava/ Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com> Suggested-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Cc: Jiri Olsa <olsajiri@gmail.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Acked-by: David Vernet <void@manifault.com> Acked-by: Yafang Shao <laoar.shao@gmail.com> Link: https://lore.kernel.org/r/20231031215625.2343848-1-davemarchevsky@fb.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>		2023-11-01 22:33:53 -07:00
..
libbpf	documentation/bpf: Document cgroup unix socket address hooks	2023-10-11 17:27:55 -07:00
standardization	bpf, docs: Define signed modulo as using truncated division	2023-10-19 01:36:12 +02:00
bpf_design_QA.rst	docs/bpf: Add documentation for new instructions	2023-07-27 18:54:17 -07:00
bpf_devel_QA.rst	bpf: Replace deprecated -target with --target= for Clang	2023-06-29 15:46:17 +02:00
bpf_iterators.rst	bpf, docs: BPF Iterator Document	2023-06-22 19:44:22 +02:00
bpf_licensing.rst	bpf: Document BPF licensing.	2021-09-22 23:13:13 +02:00
bpf_prog_run.rst	Documentation/bpf: Add documentation for BPF_PROG_RUN	2022-03-09 14:19:22 -08:00
btf.rst	docs/bpf: Fix "file doesn't exist" warnings in {llvm_reloc,btf}.rst	2023-09-01 15:56:48 +02:00
clang-notes.rst	bpf, docs: Explain helper functions	2023-03-10 13:02:00 -08:00
classic_vs_extended.rst	bpf, docs: Split the comparism to classic BPF from instruction-set.rst	2021-12-30 16:31:44 -08:00
cpumasks.rst	Documentation: Fix typos	2023-08-18 11:29:03 -06:00
drgn.rst	bpf: Document bpf_inspect drgn tool	2020-03-26 00:08:36 +01:00
faq.rst	bpf, docs: Fix ordering of bpf documentation	2021-11-17 23:24:01 +01:00
graph_ds_impl.rst	Documentation: Fix typos	2023-08-18 11:29:03 -06:00
helpers.rst	bpf, docs: Fix ordering of bpf documentation	2021-11-17 23:24:01 +01:00
index.rst	bpf, docs: Move linux-notes.rst to root bpf docs tree	2023-08-30 16:35:44 +02:00
kfuncs.rst	bpf: Add __bpf_kfunc_{start,end}_defs macros	2023-11-01 22:33:53 -07:00
linux-notes.rst	bpf, docs: Move linux-notes.rst to root bpf docs tree	2023-08-30 16:35:44 +02:00
llvm_reloc.rst	docs/bpf: Fix "file doesn't exist" warnings in {llvm_reloc,btf}.rst	2023-09-01 15:56:48 +02:00
map_array.rst	docs/bpf: Fix sphinx warnings in BPF map docs	2022-11-24 01:05:04 +01:00
map_bloom_filter.rst	docs/bpf: Document BPF_MAP_TYPE_BLOOM_FILTER	2022-11-23 22:47:32 +01:00
map_cgroup_storage.rst	Remove duplicate words inside documentation	2022-09-27 13:21:43 -06:00
map_cgrp_storage.rst	docs/bpf: Add documentation for new cgroup local storage	2022-10-25 23:19:20 -07:00
map_cpumap.rst	docs/bpf: Fix sphinx warnings for cpumap	2022-11-23 22:38:53 +01:00
map_devmap.rst	docs/bpf: Fix sphinx warnings for devmap	2022-11-23 22:40:27 +01:00
map_hash.rst	docs/bpf: Add LRU internals description and graph	2023-04-27 14:20:44 +02:00
map_lpm_trie.rst	docs/bpf: Fix sphinx warnings in BPF map docs	2022-11-24 01:05:04 +01:00
map_lru_hash_update.dot	docs/bpf: Add LRU internals description and graph	2023-04-27 14:20:44 +02:00
map_of_maps.rst	docs/bpf: Fix sphinx warnings in BPF map docs	2022-11-24 01:05:04 +01:00
map_queue_stack.rst	docs/bpf: Fix sphinx warnings in BPF map docs	2022-11-24 01:05:04 +01:00
map_sk_storage.rst	docs/bpf: Reword docs for BPF_MAP_TYPE_SK_STORAGE	2022-12-14 18:35:41 +01:00
map_sockmap.rst	sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)	2023-06-24 15:50:13 -07:00
map_xskmap.rst	Documentation: bpf: correct spelling	2023-01-28 12:22:20 -08:00
maps.rst	bpf, docs: Fix final bpf docs build failure	2023-03-02 22:36:10 -08:00
other.rst	bpf, documentation: Add graph documentation for non-owning refs	2023-02-13 19:40:53 -08:00
prog_cgroup_sockopt.rst	bpf: Document EFAULT changes for sockopt	2023-05-13 16:55:46 -07:00
prog_cgroup_sysctl.rst	bpf: Document BPF_PROG_TYPE_CGROUP_SYSCTL	2019-04-18 16:05:36 -07:00
prog_flow_dissector.rst	docs/bpf: update out-of-date doc in BPF flow dissector	2023-09-13 14:22:57 -07:00
prog_lsm.rst	lsm: move hook comments docs to security/security.c	2023-04-28 11:58:34 -04:00
prog_sk_lookup.rst	bpf: sk_lookup: Add user documentation	2020-08-24 14:46:50 -07:00
programs.rst	docs/bpf: Add table of BPF program types to libbpf docs	2022-11-23 13:31:20 -08:00
redirect.rst	bpf, docs: DEVMAPs and XDP_REDIRECT	2022-11-18 23:16:31 +01:00
ringbuf.rst	Documentation: bpf: correct spelling	2023-01-28 12:22:20 -08:00
s390.rst	bpf: Add s390 testing documentation	2019-10-30 16:25:31 +01:00
syscall_api.rst	bpf, docs: Fix ordering of bpf documentation	2021-11-17 23:24:01 +01:00
test_debug.rst	bpf, docs: Fix ordering of bpf documentation	2021-11-17 23:24:01 +01:00
verifier.rst	docs/bpf: Add description of register liveness tracking algorithm	2023-02-02 20:21:59 -08:00