diff options
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/page.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/asm-generic/page.h b/include/asm-generic/page.h new file mode 100644 index 000000000000..a96b5d986b6e --- /dev/null +++ b/include/asm-generic/page.h @@ -0,0 +1,26 @@ +#ifndef _ASM_GENERIC_PAGE_H +#define _ASM_GENERIC_PAGE_H + +#ifdef __KERNEL__ +#ifndef __ASSEMBLY__ + +#include <linux/compiler.h> + +/* Pure 2^n version of get_order */ +static __inline__ __attribute_const__ int get_order(unsigned long size) +{ + int order; + + size = (size - 1) >> (PAGE_SHIFT - 1); + order = -1; + do { + size >>= 1; + order++; + } while (size); + return order; +} + +#endif /* __ASSEMBLY__ */ +#endif /* __KERNEL__ */ + +#endif /* _ASM_GENERIC_PAGE_H */ |