From: Jiri Olsa <olsajiri@gmail.com>
To: Andrii Nakryiko <andrii@kernel.org>
Cc: bpf@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net,
martin.lau@kernel.org, kernel-team@meta.com
Subject: Re: [PATCH bpf-next 2/5] selftests/bpf: improve missed_kprobe_recursion test robustness
Date: Thu, 12 Oct 2023 15:22:22 +0200 [thread overview]
Message-ID: <ZSfzDk28TYohTv8z@krava> (raw)
In-Reply-To: <20231011223728.3188086-3-andrii@kernel.org>
On Wed, Oct 11, 2023 at 03:37:25PM -0700, Andrii Nakryiko wrote:
> Given missed_kprobe_recursion is non-serial and uses common testing
> kfuncs to count number of recursion misses it's possible that some other
> parallel test can trigger extraneous recursion misses. So we can't
> expect exactly 1 miss. Relax conditions and expect at least one.
>
> Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
jirka
> ---
> tools/testing/selftests/bpf/prog_tests/missed.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/tools/testing/selftests/bpf/prog_tests/missed.c b/tools/testing/selftests/bpf/prog_tests/missed.c
> index 24ade11f5c05..70d90c43537c 100644
> --- a/tools/testing/selftests/bpf/prog_tests/missed.c
> +++ b/tools/testing/selftests/bpf/prog_tests/missed.c
> @@ -81,10 +81,10 @@ static void test_missed_kprobe_recursion(void)
> ASSERT_EQ(topts.retval, 0, "test_run");
>
> ASSERT_EQ(get_missed_count(bpf_program__fd(skel->progs.test1)), 0, "test1_recursion_misses");
> - ASSERT_EQ(get_missed_count(bpf_program__fd(skel->progs.test2)), 1, "test2_recursion_misses");
> - ASSERT_EQ(get_missed_count(bpf_program__fd(skel->progs.test3)), 1, "test3_recursion_misses");
> - ASSERT_EQ(get_missed_count(bpf_program__fd(skel->progs.test4)), 1, "test4_recursion_misses");
> - ASSERT_EQ(get_missed_count(bpf_program__fd(skel->progs.test5)), 1, "test5_recursion_misses");
> + ASSERT_GE(get_missed_count(bpf_program__fd(skel->progs.test2)), 1, "test2_recursion_misses");
> + ASSERT_GE(get_missed_count(bpf_program__fd(skel->progs.test3)), 1, "test3_recursion_misses");
> + ASSERT_GE(get_missed_count(bpf_program__fd(skel->progs.test4)), 1, "test4_recursion_misses");
> + ASSERT_GE(get_missed_count(bpf_program__fd(skel->progs.test5)), 1, "test5_recursion_misses");
>
> cleanup:
> missed_kprobe_recursion__destroy(skel);
> --
> 2.34.1
>
>
next prev parent reply other threads:[~2023-10-12 13:22 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-11 22:37 [PATCH bpf-next 0/5] BPF verifier log improvements Andrii Nakryiko
2023-10-11 22:37 ` [PATCH bpf-next 1/5] selftests/bpf: improve percpu_alloc test robustness Andrii Nakryiko
2023-10-12 6:04 ` Yafang Shao
2023-10-12 16:37 ` Andrii Nakryiko
2023-10-11 22:37 ` [PATCH bpf-next 2/5] selftests/bpf: improve missed_kprobe_recursion " Andrii Nakryiko
2023-10-12 13:22 ` Jiri Olsa [this message]
2023-10-11 22:37 ` [PATCH bpf-next 3/5] selftests/bpf: make align selftests more robust Andrii Nakryiko
2023-10-11 22:37 ` [PATCH bpf-next 4/5] bpf: disambiguate SCALAR register state output in verifier logs Andrii Nakryiko
2023-10-12 5:33 ` John Fastabend
2023-10-12 16:22 ` Andrii Nakryiko
2023-10-12 16:59 ` John Fastabend
2023-10-12 17:45 ` Andrii Nakryiko
2023-10-11 22:37 ` [PATCH bpf-next 5/5] bpf: ensure proper register state printing for cond jumps Andrii Nakryiko
2023-10-12 5:40 ` [PATCH bpf-next 0/5] BPF verifier log improvements John Fastabend
2023-10-12 15:00 ` Eduard Zingerman
2023-10-16 12:00 ` patchwork-bot+netdevbpf
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