selftests/bpf: Fix bpf_cookie and find_vma in nested VM

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bpf_cookie and find_vma are flaky in nested VMs, which is used by some CI
systems. It turns out these failures are caused by unreliable perf event
in nested VM. Fix these by:

  1. Use PERF_COUNT_SW_CPU_CLOCK in find_vma;
  2. Increase sample_freq in bpf_cookie.

Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240604070700.3032142-1-song@kernel.org

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Song Liu 2024-06-04 00:07:00 -07:00 • committed by Andrii Nakryiko

parent 49df0019f3

commit 61ce0ea759

2 changed files with 3 additions and 3 deletions

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2

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

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4

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

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