include/asm-x86_64/setup.h - kernel/common - Git at Google

 #ifndef _x8664_SETUP_H
 #define _x8664_SETUP_H

 #define COMMAND_LINE_SIZE	256

 #endif
	#ifndef _x8664_SETUP_H
	#define _x8664_SETUP_H

	#define COMMAND_LINE_SIZE 256

	#endif