selftests/bpf: Test kernel module ksym externs

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Add per-CPU variable to bpf_testmod.ko and use those from new selftest to
validate it works end-to-end.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Acked-by: Hao Luo <haoluo@google.com>
Link: https://lore.kernel.org/bpf/20210112075520.4103414-8-andrii@kernel.org

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Andrii Nakryiko 2021-01-11 23:55:20 -08:00 • committed by Alexei Starovoitov

parent 284d2587ea

commit 430d97a8a7

3 changed files with 60 additions and 0 deletions

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3

tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c

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31

tools/testing/selftests/bpf/prog_tests/ksyms_module.c

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26

tools/testing/selftests/bpf/progs/test_ksyms_module.c

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