diff options
| author | Zheng Da <zhengda1936@gmail.com> | 2009-12-06 05:26:23 +0100 |
|---|---|---|
| committer | Zheng Da <zhengda1936@gmail.com> | 2009-12-06 05:26:23 +0100 |
| commit | 8a6d48c0542876eb3acfc0970c0ab7872db08d5f (patch) | |
| tree | 496e78bc728317ea779781b92f897d16936ee231 /libdde_linux26/contrib/include/linux/pfn.h | |
| parent | b4bffcfcdf3ab7a55d664e9aa5907f88da503f38 (diff) | |
check in the original version of dde linux26.
Diffstat (limited to 'libdde_linux26/contrib/include/linux/pfn.h')
| -rw-r--r-- | libdde_linux26/contrib/include/linux/pfn.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/libdde_linux26/contrib/include/linux/pfn.h b/libdde_linux26/contrib/include/linux/pfn.h new file mode 100644 index 00000000..76466372 --- /dev/null +++ b/libdde_linux26/contrib/include/linux/pfn.h @@ -0,0 +1,13 @@ +#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 |