linux-kernel - Re: [PATCH] lib/vsprintf: add _

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Date:   Sun, 29 Aug 2021 16:36:13 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Yury Norov <yury.norov@...il.com>
Cc:     Petr Mladek <pmladek@...e.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Sergey Senozhatsky <senozhatsky@...omium.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] lib/vsprintf: add __putchar()


On Fri, Aug 27, 2021 at 10:11:55AM -0700, Yury Norov wrote:
> There are 26 occurrences of the code snippet like this in the file :
> 	if (buf < end)
> 	        *buf = separator;
> 	++buf;
> 
> This patch adds a helper function __putchar() to replace opencoding.
> It adds a lot to readability, and also saves 43 bytes of text on x86.

Last time I tried similar it failed the compilation.

Anyway, while you remove a lot of code I'm not sure it makes the code better
to read and understand. Also, we use the same idiom outside of this file.

I would ask Rasmus' opinion on this.

-- 
With Best Regards,
Andy Shevchenko