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| author | Mykola Lysenko <[email protected]> | 2022-03-08 12:04:47 -0800 |
|---|---|---|
| committer | Andrii Nakryiko <[email protected]> | 2022-03-08 17:39:28 -0800 |
| commit | d4b540544499d90ac81695e21e354cd5c82fa67e (patch) | |
| tree | f3342707679848d8525ab111ca9c4f3b7870cfdf /tools/testing/selftests/bpf/prog_tests/send_signal.c | |
| parent | 7fd9fd46a459272e641be78c1cc36baab1921fa1 (diff) | |
Improve perf related BPF tests (sample_freq issue)
Linux kernel may automatically reduce kernel.perf_event_max_sample_rate
value when running tests in parallel on slow systems. Linux kernel checks
against this limit when opening perf event with freq=1 parameter set.
The lower bound is 1000. This patch reduces sample_freq value to 1000
in all BPF tests that use sample_freq to ensure they always can open
perf event.
Signed-off-by: Mykola Lysenko <[email protected]>
Signed-off-by: Andrii Nakryiko <[email protected]>
Acked-by: Yonghong Song <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/send_signal.c')
0 files changed, 0 insertions, 0 deletions