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| author | Andrii Nakryiko <andrii@kernel.org> | 2021-08-15 00:06:09 -0700 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2021-08-17 00:45:08 +0200 |
| commit | 4bd11e08e0bb1862fe72495014e33795e412bffb (patch) | |
| tree | 52231ab0e774f99c6e66d5ca4ca9f2ffcdefc4a3 /tools/testing/selftests/bpf/trace_helpers.h | |
| parent | 5e3b8356de3623987ace530b1977ffeb9ecf5a8a (diff) | |
| download | lwn-4bd11e08e0bb1862fe72495014e33795e412bffb.tar.gz lwn-4bd11e08e0bb1862fe72495014e33795e412bffb.zip | |
selftests/bpf: Add ref_ctr_offset selftests
Extend attach_probe selftests to specify ref_ctr_offset for uprobe/uretprobe
and validate that its value is incremented from zero.
Turns out that once uprobe is attached with ref_ctr_offset, uretprobe for the
same location/function *has* to use ref_ctr_offset as well, otherwise
perf_event_open() fails with -EINVAL. So this test uses ref_ctr_offset for
both uprobe and uretprobe, even though for the purpose of test uprobe would be
enough.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210815070609.987780-17-andrii@kernel.org
Diffstat (limited to 'tools/testing/selftests/bpf/trace_helpers.h')
| -rw-r--r-- | tools/testing/selftests/bpf/trace_helpers.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/trace_helpers.h b/tools/testing/selftests/bpf/trace_helpers.h index 3d9435b3dd3b..d907b445524d 100644 --- a/tools/testing/selftests/bpf/trace_helpers.h +++ b/tools/testing/selftests/bpf/trace_helpers.h @@ -20,5 +20,6 @@ void read_trace_pipe(void); ssize_t get_uprobe_offset(const void *addr, ssize_t base); ssize_t get_base_addr(void); +ssize_t get_rel_offset(uintptr_t addr); #endif |