linux-kernel - Re: [PATCH] Use vprintk rather that vsnprintf where possible

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Date:	Fri, 5 Dec 2008 04:05:06 +0100
From:	"Kay Sievers" <kay.sievers@...y.org>
To:	"Matt Mackall" <mpm@...enic.com>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Use vprintk rather that vsnprintf where possible

On Thu, Dec 4, 2008 at 21:41, Matt Mackall <mpm@...enic.com> wrote:
> This does away with lots of large static and on-stack buffers as well
> as a few associated locks.

> -               len = snprintf(s, 256, KERN_DEBUG "%s: ", prefix);
> -
>                va_start(args, fmt);
> -               len += vsnprintf(&s[len], (256 - len), fmt, args);
> +               printk(KERN_DEBUG "%s: ", prefix);
> +               vprintk(fmt, args);

If we convert to two printk calls for a single line, does that not
possibly get mixed up with printks from other locations and lead to
hardly readable log output?

Thanks,
Kay
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