arch/m68k/include/asm/setup_no.h - linux - Git at Google

 #ifdef __KERNEL__

 #include <asm/setup_mm.h>

 /* We have a bigger command line buffer. */
 #undef COMMAND_LINE_SIZE

 #endif  /*  __KERNEL__  */

 #define COMMAND_LINE_SIZE	512
	#ifdef __KERNEL__

	#include <asm/setup_mm.h>

	/* We have a bigger command line buffer. */
	#undef COMMAND_LINE_SIZE

	#endif /* __KERNEL__ */

	#define COMMAND_LINE_SIZE 512