linux-kernel - Re: [PATCH bpf-next v2 5/5] selftests/bpf: add testcase for FENTRY/FEXIT with 6+ arguments

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Message-ID: <CADxym3ZNwuYTmXyzTuyqhPbwerejJOC8_YuSBsyFwzogOjvagA@mail.gmail.com>
Date:   Mon, 5 Jun 2023 10:55:55 +0800
From:   Menglong Dong <menglong8.dong@...il.com>
To:     Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:     Jiri Olsa <olsajiri@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        David Ahern <dsahern@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <martin.lau@...ux.dev>,
        Song Liu <song@...nel.org>, Yonghong Song <yhs@...com>,
        KP Singh <kpsingh@...nel.org>, Jiri Olsa <jolsa@...nel.org>,
        X86 ML <x86@...nel.org>, Biao Jiang <benbjiang@...cent.com>,
        Network Development <netdev@...r.kernel.org>,
        bpf <bpf@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>
Subject: Re: [PATCH bpf-next v2 5/5] selftests/bpf: add testcase for
 FENTRY/FEXIT with 6+ arguments

On Sat, Jun 3, 2023 at 2:32 AM Alexei Starovoitov
<alexei.starovoitov@...il.com> wrote:
>
> On Fri, Jun 2, 2023 at 12:03 AM <menglong8.dong@...il.com> wrote:
> >
> > From: Menglong Dong <imagedong@...cent.com>
> >
> > Add test7/test12/test14 in fexit_test.c and fentry_test.c to test the
> > fentry and fexit whose target function have 7/12/14 arguments.
> >
> > And the testcases passed:
> >
> > ./test_progs -t fexit
> > $71      fentry_fexit:OK
> > $73/1    fexit_bpf2bpf/target_no_callees:OK
> > $73/2    fexit_bpf2bpf/target_yes_callees:OK
> > $73/3    fexit_bpf2bpf/func_replace:OK
> > $73/4    fexit_bpf2bpf/func_replace_verify:OK
> > $73/5    fexit_bpf2bpf/func_sockmap_update:OK
> > $73/6    fexit_bpf2bpf/func_replace_return_code:OK
> > $73/7    fexit_bpf2bpf/func_map_prog_compatibility:OK
> > $73/8    fexit_bpf2bpf/func_replace_multi:OK
> > $73/9    fexit_bpf2bpf/fmod_ret_freplace:OK
> > $73/10   fexit_bpf2bpf/func_replace_global_func:OK
> > $73/11   fexit_bpf2bpf/fentry_to_cgroup_bpf:OK
> > $73/12   fexit_bpf2bpf/func_replace_progmap:OK
> > $73      fexit_bpf2bpf:OK
> > $74      fexit_sleep:OK
> > $75      fexit_stress:OK
> > $76      fexit_test:OK
> > Summary: 5/12 PASSED, 0 SKIPPED, 0 FAILED
> >
> > ./test_progs -t fentry
> > $71      fentry_fexit:OK
> > $72      fentry_test:OK
> > $140     module_fentry_shadow:OK
> > Summary: 3/0 PASSED, 0 SKIPPED, 0 FAILED
> >
> > Reviewed-by: Jiang Biao <benbjiang@...cent.com>
> > Signed-off-by: Menglong Dong <imagedong@...cent.com>
> > ---
> >  net/bpf/test_run.c                            | 30 +++++++++++++++-
> >  .../testing/selftests/bpf/progs/fentry_test.c | 34 ++++++++++++++++++
> >  .../testing/selftests/bpf/progs/fexit_test.c  | 35 +++++++++++++++++++
> >  3 files changed, 98 insertions(+), 1 deletion(-)
> >
> > diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c
> > index c73f246a706f..e12a72311eca 100644
> > --- a/net/bpf/test_run.c
> > +++ b/net/bpf/test_run.c
> > @@ -536,6 +536,27 @@ int noinline bpf_fentry_test6(u64 a, void *b, short c, int d, void *e, u64 f)
> >         return a + (long)b + c + d + (long)e + f;
> >  }
> >
> > +noinline int bpf_fentry_test7(u64 a, void *b, short c, int d, void *e,
> > +                             u64 f, u64 g)
> > +{
> > +       return a + (long)b + c + d + (long)e + f + g;
> > +}
> > +
> > +noinline int bpf_fentry_test12(u64 a, void *b, short c, int d, void *e,
> > +                              u64 f, u64 g, u64 h, u64 i, u64 j,
> > +                              u64 k, u64 l)
> > +{
> > +       return a + (long)b + c + d + (long)e + f + g + h + i + j + k + l;
> > +}
> > +
> > +noinline int bpf_fentry_test14(u64 a, void *b, short c, int d, void *e,
> > +                              u64 f, u64 g, u64 h, u64 i, u64 j,
> > +                              u64 k, u64 l, u64 m, u64 n)
> > +{
> > +       return a + (long)b + c + d + (long)e + f + g + h + i + j + k + l +
> > +              m + n;
> > +}
>
> Please add test func to bpf_testmod instead of here.

Okay!

Thanks!
Menglong Dong