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References: <20210325015124.1543397-1-kafai@fb.com> <CAM_iQpWGn000YOmF2x6Cm0FqCOSq0yUjc_+Up+Ek3r6NrBW3mw@mail.gmail.com>
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From:   Cong Wang <xiyou.wangcong@gmail.com>
Date:   Mon, 29 Mar 2021 13:18:20 -0700
Message-ID: <CAM_iQpUmkb9cbyWKcerQcJJAyGLzgtDus643FL1cyQL3FzTrfg@mail.gmail.com>
Subject: Re: [PATCH v2 bpf-next 00/14] bpf: Support calling kernel function
To:     Martin KaFai Lau <kafai@fb.com>
Cc:     Alexei Starovoitov <alexei.starovoitov@gmail.com>,
        bpf <bpf@vger.kernel.org>, Alexei Starovoitov <ast@kernel.org>,
        Daniel Borkmann <daniel@iogearbox.net>,
        kernel-team <kernel-team@fb.com>,
        Linux Kernel Network Developers <netdev@vger.kernel.org>
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On Sun, Mar 28, 2021 at 6:24 PM Martin KaFai Lau <kafai@fb.com> wrote:
> Could you also check the CONFIG_DYNAMIC_FTRACE and also try 'y' if it
> is not set?

On my side, with pahole==1.17, changing CONFIG_DYNAMIC_FTRACE
makes no difference. With pahole==1.20, CONFIG_DYNAMIC_FTRACE=y
makes it gone, but CONFIG_DYNAMIC_FTRACE=n not.

Thanks.