netdev - Re: [PATCH v2 bpf-next] tools/resolve

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Date:   Mon, 29 Mar 2021 10:23:17 -0700
From:   Song Liu <song@...nel.org>
To:     Stanislav Fomichev <sdf@...gle.com>
Cc:     Networking <netdev@...r.kernel.org>, bpf <bpf@...r.kernel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>
Subject: Re: [PATCH v2 bpf-next] tools/resolve_btfids: Fix warnings

On Mon, Mar 29, 2021 at 9:46 AM Stanislav Fomichev <sdf@...gle.com> wrote:
>
> * make eprintf static, used only in main.c
> * initialize ret in eprintf
> * remove unused *tmp
> * remove unused 'int err = -1'
>
> Signed-off-by: Stanislav Fomichev <sdf@...gle.com>
> ---
>  tools/bpf/resolve_btfids/main.c | 7 +++----
>  1 file changed, 3 insertions(+), 4 deletions(-)
>
> diff --git a/tools/bpf/resolve_btfids/main.c b/tools/bpf/resolve_btfids/main.c
> index 80d966cfcaa1..be74406626b7 100644
> --- a/tools/bpf/resolve_btfids/main.c
> +++ b/tools/bpf/resolve_btfids/main.c
> @@ -115,10 +115,10 @@ struct object {
>
>  static int verbose;
>
> -int eprintf(int level, int var, const char *fmt, ...)
> +static int eprintf(int level, int var, const char *fmt, ...)
>  {
>         va_list args;
> -       int ret;
> +       int ret = 0;
>
>         if (var >= level) {
>                 va_start(args, fmt);
> @@ -403,10 +403,9 @@ static int symbols_collect(struct object *obj)
>          * __BTF_ID__* over .BTF_ids section.
>          */
>         for (i = 0; !err && i < n; i++) {
                    ^^^^ This err is also not used.

> -               char *tmp, *prefix;
> +               char *prefix;
>                 struct btf_id *id;
>                 GElf_Sym sym;
> -               int err = -1;
>
>                 if (!gelf_getsym(obj->efile.symbols, i, &sym))
>                         return -1;
> --
> 2.31.0.291.g576ba9dcdaf-goog
>