Messages in this thread | | | Subject | Re: [PATCH v2] [media] v4l: omap4iss: Add DEBUG compiler flag | From | Joe Perches <> | Date | Wed, 05 Mar 2014 16:28:03 -0800 |
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On Thu, 2014-03-06 at 00:50 +0100, Laurent Pinchart wrote:
> Please note that -DDEBUG is equivalent to '#define DEBUG', not to '#define > CONFIG_DEBUG'. 'DEBUG' needs to be defined for dev_dbg() to have any effect.
Not quite. If CONFIG_DYNAMIC_DEBUG is set, these dev_dbg statements are compiled in but not by default set to emit output. Output can be enabled by using dynamic_debug controls like:
# echo -n 'file omap4iss/* +p' > <debugfs>/dynamic_debug/control
See Documentation/dynamic-debug-howto.txt for more details.
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