linux-kernel - Re: dynamic-debug not built into scx200_acb, scx200

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Message-ID: <1313020216.11924.129.camel@Joe-Laptop>
Date:	Wed, 10 Aug 2011 16:50:16 -0700
From:	Joe Perches <joe@...ches.com>
To:	Jim Cromie <jim.cromie@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, linux-i2c@...r.kernel.org
Subject: Re: dynamic-debug not built into scx200_acb, scx200_i2c

On Wed, 2011-08-10 at 15:06 -0600, Jim Cromie wrote:
> scx200_acb has several pr_debugs, but theyre not available via dynamic-debug
> 
> Ive been unable to figure out why.
> Any ideas ?

-DDEBUG forces pr_debug to be output and doesn't
allow dynamic_debug for those outputs.

from drivers/i2c/busses/Makefile:

ccflags-$(CONFIG_I2C_DEBUG_BUS) := -DDEBUG

from printk.h:

/* If you are writing a driver, please use dev_dbg instead */
#if defined(DEBUG)
#define pr_debug(fmt, ...) \
	printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
#elif defined(CONFIG_DYNAMIC_DEBUG)
/* dynamic_pr_debug() uses pr_fmt() internally so we don't need it here */
#define pr_debug(fmt, ...) \
	dynamic_pr_debug(fmt, ##__VA_ARGS__)



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