tools/include/linux/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