linux-kernel - Re: [PATCH] i2c: add missing KERN

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Date:	Sat, 07 Feb 2009 11:37:48 +0100
From:	Frank Seidel <fseidel@...e.de>
To:	Jean Delvare <khali@...ux-fr.org>
Cc:	Uwe Kleine-König <ukleinek@...len.de>,
	linux kernel <linux-kernel@...r.kernel.org>,
	akpm@...ux-foundation.org, ben-linux@...ff.org,
	linux-i2c@...r.kernel.org, frank@...eidel.de,
	w.sang@...gutronix.de, "David S. Miller" <davem@...emloft.net>,
	Frans Pop <elendil@...net.nl>,
	Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>
Subject: Re: [PATCH] i2c: add missing KERN_* constants to printks

Jean Delvare wrote:
> Default log level? That's news to me. Care to elaborate?

printk (in kernel/printk.c) uses vprintk and vprintk:
asmlinkage int vprintk(const char *fmt, va_list args)
{
        int printed_len = 0;
        int current_log_level = default_message_loglevel;
...
and default_message_loglevel in include/linux/kernel.h:

#define default_message_loglevel (console_printk[1])

and console_printk[1] is (in kernel/printk.c)
DEFAULT_MESSAGE_LOGLEVEL

and in kernel/printk.c:
#define DEFAULT_MESSAGE_LOGLEVEL 4 /* KERN_WARNING */

=> so as far as i could see KERN_WARNING is the
default loglevel of messages.

Thanks,
Frank
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