From: Yonghong Song <yonghong.song@linux.dev>
To: bpf@vger.kernel.org
Cc: Alexei Starovoitov <ast@kernel.org>,
Andrii Nakryiko <andrii@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
kernel-team@fb.com, Martin KaFai Lau <martin.lau@kernel.org>
Subject: [PATCH bpf-next] bpf: Sync uapi bpf.h header for the tooling infra
Date: Wed, 12 Feb 2025 21:04:27 -0800 [thread overview]
Message-ID: <20250213050427.2788837-1-yonghong.song@linux.dev> (raw)
Commit 0abff462d802 ("bpf: Add comment about helper freeze") missed the
tooling header sync. Fix it.
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
---
tools/include/uapi/linux/bpf.h | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 2acf9b336371..fff6cdb8d11a 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -6019,7 +6019,10 @@ union bpf_attr {
FN(user_ringbuf_drain, 209, ##ctx) \
FN(cgrp_storage_get, 210, ##ctx) \
FN(cgrp_storage_delete, 211, ##ctx) \
- /* */
+ /* This helper list is effectively frozen. If you are trying to \
+ * add a new helper, you should add a kfunc instead which has \
+ * less stability guarantees. See Documentation/bpf/kfuncs.rst \
+ */
/* backwards-compatibility macros for users of __BPF_FUNC_MAPPER that don't
* know or care about integer value that is now passed as second argument
--
2.43.5
next reply other threads:[~2025-02-13 5:04 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-13 5:04 Yonghong Song [this message]
2025-02-13 6:00 ` [PATCH bpf-next] bpf: Sync uapi bpf.h header for the tooling infra patchwork-bot+netdevbpf
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