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[linux.git] / 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
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