With a LTO kernel built with clang, I encountered two test failures,
ksyms and kprobe_multi_bench_attach/kernel. Both test failures are
due to static variable/function renaming due to cross-file inlining.
The solution is to either skip the test or filter out those renamed
functions. A helper function check_lto_kernel() is introduced to
identify whether the underlying kernel is built with LTO or not.
Please see each individual patches for details.
Yonghong Song (4):
selftests/bpf: Replace CHECK with ASSERT macros for ksyms test
selftests/bpf: Add check_lto_kernel() helper
selftests/bpf: Fix possible ksyms test failure with LTO kernel
selftests/bpf: Fix possible kprobe_multi_bench_attach test failure
with LTO kernel
.../bpf/prog_tests/kprobe_multi_test.c | 7 +++
.../testing/selftests/bpf/prog_tests/ksyms.c | 42 +++++++++--------
tools/testing/selftests/bpf/testing_helpers.c | 47 +++++++++++++++++++
tools/testing/selftests/bpf/testing_helpers.h | 1 +
4 files changed, 78 insertions(+), 19 deletions(-)
--
2.43.0
