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From: Andrii Nakryiko <andrii@kernel.org>
To: <bpf@vger.kernel.org>, <netdev@vger.kernel.org>, <ast@fb.com>,
	<daniel@iogearbox.net>
Cc: <andrii@kernel.org>, <kernel-team@fb.com>
Subject: [PATCH bpf-next 1/6] selftests/bpf: document latest Clang fix expectations for linking tests
Date: Wed, 21 Apr 2021 18:45:51 -0700	[thread overview]
Message-ID: <20210422014556.3451936-2-andrii@kernel.org> (raw)
In-Reply-To: <20210422014556.3451936-1-andrii@kernel.org>

Document which fixes are required to generate correct static linking
selftests.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
---
 tools/testing/selftests/bpf/README.rst | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/tools/testing/selftests/bpf/README.rst b/tools/testing/selftests/bpf/README.rst
index 65fe318d1e71..3353778c30f8 100644
--- a/tools/testing/selftests/bpf/README.rst
+++ b/tools/testing/selftests/bpf/README.rst
@@ -193,3 +193,12 @@ Without it, the error from compiling bpf selftests looks like:
   libbpf: failed to find BTF for extern 'tcp_slow_start' [25] section: -2
 
 __ https://reviews.llvm.org/D93563
+
+Clang dependencies for static linking tests
+===========================================
+
+linked_vars, linked_maps, and linked_funcs tests depend on `Clang fix`__ to
+generate valid BTF information for weak variables. Please make sure you use
+Clang that contains the fix.
+
+__ https://reviews.llvm.org/D100362
-- 
2.30.2


  reply	other threads:[~2021-04-22  1:46 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-22  1:45 [PATCH bpf-next 0/6] BPF static linker: support static vars and maps Andrii Nakryiko
2021-04-22  1:45 ` Andrii Nakryiko [this message]
2021-04-22  1:45 ` [PATCH bpf-next 2/6] libbpf: rename static variables during linking Andrii Nakryiko
2021-04-22  1:45 ` [PATCH bpf-next 3/6] libbpf: support static map definitions Andrii Nakryiko
2021-04-22  1:45 ` [PATCH bpf-next 4/6] bpftool: handle transformed static map names in BPF skeleton Andrii Nakryiko
2021-04-22  1:45 ` [PATCH bpf-next 5/6] selftests/bpf: extend linked_vars selftests with static variables Andrii Nakryiko
2021-04-22  1:45 ` [PATCH bpf-next 6/6] selftests/bpf: extend linked_maps selftests with static maps Andrii Nakryiko

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