C言語 デバッグ用マクロ

http://gcc.gnu.org/onlinedocs/gcc/Variadic-Macros.html#Variadic-Macros

#define DMSG_ERR( p_fmt, ...) printk(KERN_ERR "cpu:%d %s:%d (%s) " p_fmt, smp_processor_id(), __BASENAME__, __LINE__, __func__, ## __VA_ARGS__)
#define DMSG_WARNING(p_fmt, ...) printk(KERN_WARNING "cpu:%d %s:%d (%s) " p_fmt, smp_processor_id(), __BASENAME__, __LINE__, __func__, ## __VA_ARGS__)
#define DMSG_NOTICE( p_fmt, ...) printk(KERN_NOTICE "cpu:%d %s:%d (%s) " p_fmt, smp_processor_id(), __BASENAME__, __LINE__, __func__, ## __VA_ARGS__)
#define DMSG_INFO( p_fmt, ...) printk(KERN_INFO "cpu:%d %s:%d (%s) " p_fmt, smp_processor_id(), __BASENAME__, __LINE__, __func__, ## __VA_ARGS__)