diff options
Diffstat (limited to 'include/asm-sparc/page.h')
| -rw-r--r-- | include/asm-sparc/page.h | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/include/asm-sparc/page.h b/include/asm-sparc/page.h index 344640811..3c61eb636 100644 --- a/include/asm-sparc/page.h +++ b/include/asm-sparc/page.h @@ -1,4 +1,4 @@ -/* $Id: page.h,v 1.47 2000/01/29 00:41:49 anton Exp $ +/* $Id: page.h,v 1.48 2000/02/16 07:34:51 davem Exp $ * page.h: Various defines and such for MMU operations on the Sparc for * the Linux kernel. * @@ -129,6 +129,20 @@ BTFIXUPDEF_SETHI(sparc_unmapped_base) #define TASK_UNMAPPED_BASE BTFIXUP_SETHI(sparc_unmapped_base) +/* 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; +} + #else /* !(__ASSEMBLY__) */ #define __pgprot(x) (x) |