netdev - Re: [PATCH bpf-next 2/5] bpf: factor out a helper to prepare trampoline for struct

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Message-ID: <20211001173932.d6tknlfnqg2o6uu3@kafai-mbp>
Date:   Fri, 1 Oct 2021 10:39:32 -0700
From:   Martin KaFai Lau <kafai@...com>
To:     Hou Tao <houtao1@...wei.com>
CC:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>, <netdev@...r.kernel.org>,
        <bpf@...r.kernel.org>
Subject: Re: [PATCH bpf-next 2/5] bpf: factor out a helper to prepare
 trampoline for struct_ops prog

On Thu, Sep 30, 2021 at 06:17:33PM +0800, Hou Tao wrote:
> >> +int bpf_prepare_st_ops_prog(struct bpf_tramp_progs *tprogs,
> >> +			    struct bpf_prog *prog,
> >> +			    const struct btf_func_model *model,
> >> +			    void *image, void *image_end)
> > The existing struct_ops functions in the kernel now have naming like
> > bpf_struct_ops_.*().  How about renaming it to
> > bpf_struct_ops_prepare_trampoline()?
> bpf_struct_ops_prepare_trampoline() may be a little long, and it will make
> the indentations of its parameters look ugly, so how about
> bpf_struct_ops_prep_prog() ?
hmm... naming is hard...
but it is preparing the trampoline instead of preparing the
prog, and most other bpf funcs are using 'prepare' instead of 'prep'.
My preference is a better naming on what the func does and a
consistent naming with others.  The indentation looks fine also.

It is not too bad ;)
bpf_struct_ops_prepare_prog()
arch_prepare_bpf_trampoline()
bpf_struct_ops_prepare_trampoline()

The params indentation looks fine and within 80 cols:

int bpf_struct_ops_prepare_trampoline(struct bpf_tramp_progs *tprogs,
				      struct bpf_prog *prog,
				      const struct btf_func_model *model,
				      void *image, void *image_end0
{

}