netdev - Re: [PATCH] bpf: hide do_bpf_send

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Date:   Mon, 17 Jun 2019 08:26:29 -0700
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...hat.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andriin@...com>, Yonghong Song <yhs@...com>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>,
        Matt Mullins <mmullins@...com>,
        Network Development <netdev@...r.kernel.org>,
        bpf <bpf@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] bpf: hide do_bpf_send_signal when unused

On Mon, Jun 17, 2019 at 5:59 AM Arnd Bergmann <arnd@...db.de> wrote:
>
> When CONFIG_MODULES is disabled, this function is never called:
>
> kernel/trace/bpf_trace.c:581:13: error: 'do_bpf_send_signal' defined but not used [-Werror=unused-function]

hmm. it should work just fine without modules.
the bug is somewhere else.