linux-kernel - Re: [PATCH bpf-next v3] bpf: Only provide bpf_sock_from_file with CONFIG

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Date:   Tue, 8 Dec 2020 22:58:48 +0100
From:   KP Singh <kpsingh@...nel.org>
To:     Martin KaFai Lau <kafai@...com>
Cc:     Florent Revest <revest@...omium.org>, bpf@...r.kernel.org,
        ast@...nel.org, daniel@...earbox.net, andrii@...nel.org,
        kpsingh@...omium.org, rdunlap@...radead.org,
        linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel test robot <lkp@...el.com>
Subject: Re: [PATCH bpf-next v3] bpf: Only provide bpf_sock_from_file with CONFIG_NET

On Tue, Dec 8, 2020 at 9:56 PM Martin KaFai Lau <kafai@...com> wrote:
>
> On Tue, Dec 08, 2020 at 06:36:23PM +0100, Florent Revest wrote:
> > This moves the bpf_sock_from_file definition into net/core/filter.c
> > which only gets compiled with CONFIG_NET and also moves the helper proto
> > usage next to other tracing helpers that are conditional on CONFIG_NET.
> >
> > This avoids
> >   ld: kernel/trace/bpf_trace.o: in function `bpf_sock_from_file':
> >   bpf_trace.c:(.text+0xe23): undefined reference to `sock_from_file'
> > When compiling a kernel with BPF and without NET.
> Acked-by: Martin KaFai Lau <kafai@...com>

Acked-by: KP Singh <kpsingh@...nel.org>