kernel_helper.h

#ifndef __helper_h
#define __helper_h

// The name of this module (several options)
//#define MYNAME THIS_MODULE->name
#define MYNAME KBUILD_MODNAME
static const char myname[]=MYNAME;

// do we want debug information ?!?
//#define DO_DEBUG
// TODO - the macros here could (and should?!?) be turned into inline functions...

#ifdef DO_DEBUG
	#define DEBUG(fmt,args...) printk(KERN_DEBUG "DEBUG: %s %s %s %d: " fmt "\n",myname,__BASE_FILE__,__FUNCTION__,__LINE__,## args)
#else // DO_DEBUG
	#define DEBUG(fmt,args...)
#endif // DO_DEBUG

// warnings are always show as KERN_WARNING; WARNING does not do a BUG() (guaranteed)
#define WARNING(fmt,args...) printk(KERN_WARNING "WARNING: %s %s %s %d: " fmt "\n",myname,__BASE_FILE__,__FUNCTION__,__LINE__,## args);

// errors are always shown as KERN_ERR; ERROR does not do a BUG()
#define ERROR(fmt,args...) do { printk(KERN_ERR "ERROR: %s %s %s %d: " fmt "\n",myname,__BASE_FILE__,__FUNCTION__,__LINE__,## args); BUG(); } while(0)

// fatals are always shown as KERN_ERR; FATAL also does a BUG()
#define FATAL(fmt,args...) do { printk(KERN_ERR "FATAL: %s %s %s %d: " fmt "\n",myname,__BASE_FILE__,__FUNCTION__,__LINE__,## args); BUG(); } while(0)

// prints are always show as KERN_INFO 
#define PRINT(fmt,args...) printk(KERN_INFO "PRINT: %s %s %s %d: " fmt "\n",myname,__BASE_FILE__,__FUNCTION__,__LINE__,## args);

#endif // __helper_h