linux-kernel - Re: [PATCH v2 1/3] tools/nolibc/stdio: Implement vprintf()

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Date:   Thu, 6 Apr 2023 20:26:09 +0200
From:   Willy Tarreau <w@....eu>
To:     Mark Brown <broonie@...nel.org>,
        "Paul E. McKenney" <paulmck@...nel.org>
Cc:     Shuah Khan <shuah@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        linux-arm-kernel@...ts.infradead.org,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/3] tools/nolibc/stdio: Implement vprintf()

On Thu, Apr 06, 2023 at 05:19:10PM +0100, Mark Brown wrote:
> vprintf() is equivalent to vfprintf() to stdout so implement it as a simple
> wrapper for the existing vfprintf(), allowing us to build kselftest.h.
> 
> Suggested-by: Willy Tarreau <w@....eu>
> Signed-off-by: Mark Brown <broonie@...nel.org>
> ---
>  tools/include/nolibc/stdio.h | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/tools/include/nolibc/stdio.h b/tools/include/nolibc/stdio.h
> index 96ac8afc5aee..6cbbb52836a0 100644
> --- a/tools/include/nolibc/stdio.h
> +++ b/tools/include/nolibc/stdio.h
> @@ -273,6 +273,12 @@ int vfprintf(FILE *stream, const char *fmt, va_list args)
>  	return written;
>  }
>  
> +static __attribute__((unused))
> +int vprintf(const char *fmt, va_list args)
> +{
> +	return vfprintf(stdout, fmt, args);
> +}
> +
>  static __attribute__((unused, format(printf, 2, 3)))
>  int fprintf(FILE *stream, const char *fmt, ...)
>  {

Perfect, thank you Mark, I'm glad that it simplified the rest of
your series.

Acked-by: Willy Tarreau <w@....eu>

Paul, feel free to directly queue this one for 6.5. If you prefer I
can as well queue it on my side and send it later, it's just that I
have exactly zero extra value on top of this one ;-)

Thanks,
Willy