diff options
Diffstat (limited to 'include/asm-sh/page.h')
| -rw-r--r-- | include/asm-sh/page.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/asm-sh/page.h b/include/asm-sh/page.h index 867c07122..24a374d4b 100644 --- a/include/asm-sh/page.h +++ b/include/asm-sh/page.h @@ -76,6 +76,21 @@ extern int console_loglevel; #define PAGE_BUG(page) do { \ BUG(); \ } while (0) + +/* Pure 2^n version of get_order */ +extern __inline__ 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 #endif /* __KERNEL__ */ |