Hi Joe,
On Wednesday 05 March 2014 19:25:47 Joe Perches wrote:
> On Thu, 2014-03-06 at 02:52 +0100, Laurent Pinchart wrote:
> > I've thought about that, but it would require iss.h to be included before
> > all other headers. I've also thought about creating an iss-debug.h header
> > to be included first just to #define DEBUG, but decided to go for
> > handling the OMAP4 ISS debug option in the Makefile instead. If that's
> > ugly and discouraged as reported by Mauro I can try to come up with
> > something else.
>
> Unless debugging logging statements are in system level static inlines,
> adding #define DEBUG to iss.h should otherwise produce the same output
> as -DDEBUG in a Makefile.
dev_dbg() is defined in include/linux/device.h as
#if defined(CONFIG_DYNAMIC_DEBUG)
#define dev_dbg(dev, format, ...) \
do { \
dynamic_dev_dbg(dev, format, ##__VA_ARGS__); \
} while (0)
#elif defined(DEBUG)
#define dev_dbg(dev, format, arg...) \
dev_printk(KERN_DEBUG, dev, format, ##arg)
#else
#define dev_dbg(dev, format, arg...) \
({ \
if (0) \
dev_printk(KERN_DEBUG, dev, format, ##arg); \
0; \
})
#endif
We thus need the #define DEBUG it appear before the first time device.h is
included, either directly or indirectly. Adding #define DEBUG to iss.h won't
work now as iss.h is included after all system includes (which is the usual
practice, #include <...> come before #include "...").
--
Regards,
Laurent Pinchart
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