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

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Message-ID: <4F63646D.1040700@cavium.com>
Date:	Fri, 16 Mar 2012 09:03:57 -0700
From:	David Daney <david.daney@...ium.com>
To:	Joe Perches <joe@...ches.com>
CC:	Theodore Ts'o <tytso@....edu>,
	Andreas Dilger <adilger.kernel@...ger.ca>,
	linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/9] ext4: Add -DDEBUG to Makefile

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.
>
> Signed-off-by: Joe Perches<joe@...ches.com>
> ---
>   fs/ext4/Makefile |    2 ++
>   1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/fs/ext4/Makefile b/fs/ext4/Makefile
> index 56fd8f86..617a5d8 100644
> --- a/fs/ext4/Makefile
> +++ b/fs/ext4/Makefile
> @@ -2,6 +2,8 @@
>   # Makefile for the linux ext4-filesystem routines.
>   #
>
> +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?

David Daney
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