1 #ifndef _ASM_GENERIC_PAGE_H 2 #define _ASM_GENERIC_PAGE_H 3 4 #ifdef __KERNEL__ 5 #ifndef __ASSEMBLY__ 6 7 #include <linux/compiler.h> 8 9 /* Pure 2^n version of get_order */ 10 static __inline__ __attribute_const__ int get_order(unsigned long size) 11 { 12 int order; 13 14 size = (size - 1) >> (PAGE_SHIFT - 1); 15 order = -1; 16 do { 17 size >>= 1; 18 order++; 19 } while (size); 20 return order; 21 } 22 23 #endif /* __ASSEMBLY__ */ 24 #endif /* __KERNEL__ */ 25 26 #endif /* _ASM_GENERIC_PAGE_H */ 27