bpf/selftests: Test using global cpumask kptr with RCU

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Now that struct bpf_cpumask * is considered an RCU-safe type according
to the verifier, we should add tests that validate its common usages.
This patch adds those tests to the cpumask test suite. A subsequent
changes will remove bpf_cpumask_kptr_get(), and will adjust the selftest
and BPF documentation accordingly.

Signed-off-by: David Vernet <void@manifault.com>
Link: https://lore.kernel.org/r/20230316054028.88924-4-void@manifault.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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David Vernet 2023-03-16 00:40:26 -05:00 • committed by Alexei Starovoitov

parent 63d2d83d21

commit a5a197df58

4 changed files with 102 additions and 0 deletions

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1

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

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tools/testing/selftests/bpf/progs/cpumask_common.h

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

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

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