File: pfn.h

package info (click to toggle)
linux-2.6 2.6.32-48squeeze6
  • links: PTS, VCS
  • area: main
  • in suites: squeeze
  • size: 492,732 kB
  • ctags: 1,415,173
  • sloc: ansic: 7,636,125; asm: 225,072; xml: 32,978; makefile: 19,313; perl: 11,533; sh: 3,561; cpp: 3,365; yacc: 2,964; python: 2,893; lex: 1,824; lisp: 218; pascal: 116; awk: 109; sed: 30
file content (13 lines) | stat: -rw-r--r-- 328 bytes parent folder | download | duplicates (25) 
1
2
3
4
5
6
7
8
9
10
11
12
13
 
#ifndef _LINUX_PFN_H_
#define _LINUX_PFN_H_

#ifndef __ASSEMBLY__
#include <linux/types.h>
#endif

#define PFN_ALIGN(x)	(((unsigned long)(x) + (PAGE_SIZE - 1)) & PAGE_MASK)
#define PFN_UP(x)	(((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
#define PFN_DOWN(x)	((x) >> PAGE_SHIFT)
#define PFN_PHYS(x)	((phys_addr_t)(x) << PAGE_SHIFT)

#endif