Re: [PATCH 1/9] ext4: Add -DDEBUG to Makefile

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On Fri, 2012-03-16 at 09:03 -0700, David Daney wrote:
> On 03/15/2012 05:07 PM, Joe Perches wrote:
> > Add -DDEBUG to enable future use of pr_debug.
> > No changes to objects as no DEBUG uses currently exist.
[]
> > diff --git a/fs/ext4/Makefile b/fs/ext4/Makefile
[]
> > +ccflags-$(CONFIG_EXT4_FS) := -DDEBUG

> In many other susbsystems/drivers, the definition of DEBUG is gated by a 
> separate Kconfig symbol used to select debugging just for that 
> susbsystem/driver (see CONFIG_MMC_DEBUG for example).
> 
> Why aren't you doing the same here?

It can be done later with an additional symbol if
desired.

For now the current code uses printk(KERN_DEBUG and a
straight conversion to pr_debug would eliminate the
KERN_DEBUG the output.

pr_debug without #define DEBUG or dynamic_debug is
compiled away to nothing.


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