netdev - Re: [PATCH 1/1] libbpf: Delete an unneeded bool conversion

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Date:   Mon, 10 May 2021 11:00:29 -0700
From:   Andrii Nakryiko <andrii.nakryiko@...il.com>
To:     Zhen Lei <thunder.leizhen@...wei.com>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>, netdev <netdev@...r.kernel.org>,
        bpf <bpf@...r.kernel.org>
Subject: Re: [PATCH 1/1] libbpf: Delete an unneeded bool conversion

On Mon, May 10, 2021 at 5:43 AM Zhen Lei <thunder.leizhen@...wei.com> wrote:
>
> The result of an expression consisting of a single relational operator is
> already of the bool type and does not need to be evaluated explicitly.
>
> No functional change.
>
> Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
> ---

See [0] and [1].

  [0] https://lore.kernel.org/bpf/CAEf4BzYgLf5g3oztbA-CJR4gQ7AVKQAGrsHWCOgTtUMUM-Mxfg@mail.gmail.com/
  [1] https://lore.kernel.org/bpf/CAEf4BzZQ6=-h3g1duXFwDLr92z7nE6ajv8Rz_Zv=qx=-F3sRVA@mail.gmail.com/

>  tools/lib/bpf/libbpf.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
> index e2a3cf4378140f2..fa02213c451f4d2 100644
> --- a/tools/lib/bpf/libbpf.c
> +++ b/tools/lib/bpf/libbpf.c
> @@ -1504,7 +1504,7 @@ static int set_kcfg_value_tri(struct extern_desc *ext, void *ext_val,
>                                 ext->name, value);
>                         return -EINVAL;
>                 }
> -               *(bool *)ext_val = value == 'y' ? true : false;
> +               *(bool *)ext_val = value == 'y';
>                 break;
>         case KCFG_TRISTATE:
>                 if (value == 'y')
> --
> 2.26.0.106.g9fadedd
>
>