pfn.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _TOOLS_LINUX_PFN_H_
 3#define _TOOLS_LINUX_PFN_H_
 4
 5#include <linux/mm.h>
 6
 7#define PFN_UP(x)	(((x) + PAGE_SIZE - 1) >> PAGE_SHIFT)
 8#define PFN_DOWN(x)	((x) >> PAGE_SHIFT)
 9#define PFN_PHYS(x)	((phys_addr_t)(x) << PAGE_SHIFT)
10#define PHYS_PFN(x)	((unsigned long)((x) >> PAGE_SHIFT))
11#endif