linux-kernel - Re: [PATCH v2] [media] v4l: omap4iss: Add DEBUG compiler flag

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Date:	Wed, 05 Mar 2014 17:00:37 -0800
From:	Joe Perches <joe@...ches.com>
To:	Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc:	Mauro Carvalho Chehab <m.chehab@...sung.com>,
	Paul Bolle <pebolle@...cali.nl>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-media@...r.kernel.org, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] [media] v4l: omap4iss: Add DEBUG compiler flag

On Thu, 2014-03-06 at 01:48 +0100, Laurent Pinchart wrote:
> Would you recommend to drop driver-specific Kconfig options related to 
> debugging and use CONFIG_DYNAMIC_DEBUG instead ?

For development, sure, if there's sufficient memory.

For embedded systems with limited memory, using
dynamic_debug isn't always possible or effective.

Also, there are sometimes reasons to have debugging
messages always enabled or emitted.

For those cases, either adding #define DEBUG or using
printk(KERN_DEBUG would be fine.


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