selftests/bpf: Test skipping stacktrace

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Add a test case for stacktrace with skip > 0 using a small sized
buffer.  It didn't support skipping entries greater than or equal to
the size of buffer and filled the skipped part with 0.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20220314182042.71025-2-namhyung@kernel.org

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Namhyung Kim 2022-03-14 11:20:42 -07:00 • committed by Alexei Starovoitov

parent ee2a098851

commit e1cc1f3998

2 changed files with 131 additions and 0 deletions

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63

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

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68

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

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