netdev - Re: [PATCH bpf-next v8 11/11] selftests: Remove fmod_ret from benchmarks and test

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Message-ID: <CAEf4Bza8Omo6-f=ndMJiwxNma-G9EK6bnyHxTU0evCi=zSephg@mail.gmail.com>
Date:   Wed, 23 Sep 2020 10:40:04 -0700
From:   Andrii Nakryiko <andrii.nakryiko@...il.com>
To:     Toke Høiland-Jørgensen <toke@...hat.com>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        Andrii Nakryiko <andriin@...com>,
        John Fastabend <john.fastabend@...il.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Eelco Chaudron <echaudro@...hat.com>,
        KP Singh <kpsingh@...omium.org>,
        Networking <netdev@...r.kernel.org>, bpf <bpf@...r.kernel.org>
Subject: Re: [PATCH bpf-next v8 11/11] selftests: Remove fmod_ret from
 benchmarks and test_overhead

On Tue, Sep 22, 2020 at 11:39 AM Toke Høiland-Jørgensen <toke@...hat.com> wrote:
>
> From: Toke Høiland-Jørgensen <toke@...hat.com>
>
> The benchmark code and the test_overhead prog_test included fmod_ret
> programs that attached to various functions in the kernel. However, these
> functions were never listed as allowed for return modification, so this
> only worked because of the verifier skipping tests when a trampoline
> already existed for the attach point. Now that the verifier checks have
> been fixed, remove fmod_ret from the affected tests so they all work again.
>
> Fixes: 4eaf0b5c5e04 ("selftest/bpf: Fmod_ret prog and implement test_overhead as part of bench")
> Signed-off-by: Toke Høiland-Jørgensen <toke@...hat.com>
> ---

Acked-by: Andrii Nakryiko <andriin@...com>

>  tools/testing/selftests/bpf/bench.c                |    5 -----
>  tools/testing/selftests/bpf/benchs/bench_rename.c  |   17 -----------------
>  tools/testing/selftests/bpf/benchs/bench_trigger.c |   17 -----------------
>  .../selftests/bpf/prog_tests/test_overhead.c       |   14 +-------------
>  tools/testing/selftests/bpf/progs/test_overhead.c  |    6 ------
>  tools/testing/selftests/bpf/progs/trigger_bench.c  |    7 -------
>  6 files changed, 1 insertion(+), 65 deletions(-)
>

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