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Date:   Thu, 14 May 2020 17:09:20 -0700
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Joe Perches <joe@...ches.com>
Cc:     Alan Maguire <alan.maguire@...cle.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        bpf <bpf@...r.kernel.org>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>,
        Yonghong Song <yhs@...com>, Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>,
        Andrii Nakryiko <andriin@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...omium.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Network Development <netdev@...r.kernel.org>
Subject: Re: [PATCH v2 bpf-next 4/7] printk: add type-printing %pT format
 specifier which uses BTF

On Thu, May 14, 2020 at 04:43:24PM -0700, Joe Perches wrote:
>  The ``BTF_INT_BITS()`` specifies the number of actual bits held by this int
>  type. For example, a 4-bit bitfield encodes ``BTF_INT_BITS()`` equals to 4.
> diff --git a/include/uapi/linux/btf.h b/include/uapi/linux/btf.h
> index 5a667107ad2c..36f309209786 100644
> --- a/include/uapi/linux/btf.h
> +++ b/include/uapi/linux/btf.h
> @@ -90,6 +90,7 @@ struct btf_type {
>  #define BTF_INT_SIGNED	(1 << 0)
>  #define BTF_INT_CHAR	(1 << 1)
>  #define BTF_INT_BOOL	(1 << 2)
> +#define BTF_INT_HEX	(1 << 3)

Nack.
Hex is not a type.

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