1. 根目录:
2. arch
3. xtensa
4. include
5. asm
6. types.h

/*
 * include/asm-xtensa/types.h
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 2001 - 2005 Tensilica Inc.
 */
#ifndef _XTENSA_TYPES_H
#define _XTENSA_TYPES_H

#include <uapi/asm/types.h>

#ifndef __ASSEMBLY__
/*
 * These aren't exported outside the kernel to avoid name space clashes
 */

#define BITS_PER_LONG 32

#endif
#endif	/* _XTENSA_TYPES_H */