diff mbox series

[bpf-next,v4,17/18] selftests/bpf: Clarify llvm dependency with possible selftest failures

Message ID 20220603020024.1195174-1-yhs@fb.com (mailing list archive)
State Superseded
Delegated to: BPF
Headers show
Series bpf: Add 64bit enum value support | expand

Checks

Context Check Description
bpf/vmtest-bpf-next-PR fail PR summary
netdev/tree_selection success Clearly marked for bpf-next, async
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count fail Series longer than 15 patches (and no cover letter)
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers warning 11 maintainers not CCed: netdev@vger.kernel.org songliubraving@fb.com nathan@kernel.org linux-kselftest@vger.kernel.org john.fastabend@gmail.com trix@redhat.com llvm@lists.linux.dev kafai@fb.com ndesaulniers@google.com shuah@kernel.org kpsingh@kernel.org
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 21 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
bpf/vmtest-bpf-next-VM_Test-3 fail Logs for Kernel LATEST on z15 with gcc
bpf/vmtest-bpf-next-VM_Test-1 fail Logs for Kernel LATEST on ubuntu-latest with gcc
bpf/vmtest-bpf-next-VM_Test-2 fail Logs for Kernel LATEST on ubuntu-latest with llvm-15

Commit Message

Yonghong Song June 3, 2022, 2 a.m. UTC 
Certain subtests in selftests core_reloc and core_reloc_btfgen
requires llvm ENUM64 support in llvm15. If an older compiler
is used, these subtests will fail. Make this requirement clear
in selftests README.rst file.

Acked-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Yonghong Song <yhs@fb.com>
---
 tools/testing/selftests/bpf/README.rst | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
diff mbox series

Patch

diff --git a/tools/testing/selftests/bpf/README.rst b/tools/testing/selftests/bpf/README.rst
index eb1b7541f39d..a83d78a58014 100644
--- a/tools/testing/selftests/bpf/README.rst
+++ b/tools/testing/selftests/bpf/README.rst
@@ -266,3 +266,21 @@  from running test_progs will look like:
   test_xdpwall:FAIL:Does LLVM have https://reviews.llvm.org/D109073? unexpected error: -4007
 
 __ https://reviews.llvm.org/D109073
+
+ENUM64 support and Clang version
+================================
+
+There are a few selftests requiring LLVM ENUM64 support. The LLVM ENUM64 is
+introduced in `Clang 15` [0_]. Without proper compiler support, the following selftests
+will fail:
+
+.. code-block:: console
+
+  #45 /73    core_reloc/enum64val:FAIL
+  #45 /74    core_reloc/enum64val___diff:FAIL
+  #45 /75    core_reloc/enum64val___val3_missing:FAIL
+  #46 /73    core_reloc_btfgen/enum64val:FAIL
+  #46 /74    core_reloc_btfgen/enum64val___diff:FAIL
+  #46 /75    core_reloc_btfgen/enum64val___val3_missing:FAIL
+
+.. _0: https://reviews.llvm.org/D124641