bpf/selftests: Test for bpf_per_cpu_ptr() and bpf_this_cpu_ptr()

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Test bpf_per_cpu_ptr() and bpf_this_cpu_ptr(). Test two paths in the
kernel. If the base pointer points to a struct, the returned reg is
of type PTR_TO_BTF_ID. Direct pointer dereference can be applied on
the returned variable. If the base pointer isn't a struct, the
returned reg is of type PTR_TO_MEM, which also supports direct pointer
dereference.

Signed-off-by: Hao Luo <haoluo@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20200929235049.2533242-7-haoluo@google.com

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Hao Luo 2020-09-29 16:50:49 -07:00 • committed by Alexei Starovoitov

parent 63d9b80dcf

commit 00dc73e44a

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18

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

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32

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

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