patch-2.3.46 linux/include/asm-alpha/page.h
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- Lines: 21
- Date:
Mon Feb 14 15:34:21 2000
- Orig file:
v2.3.45/linux/include/asm-alpha/page.h
- Orig date:
Tue Dec 7 09:32:49 1999
diff -u --recursive --new-file v2.3.45/linux/include/asm-alpha/page.h linux/include/asm-alpha/page.h
@@ -109,6 +109,20 @@
#define BUG() __asm__ __volatile__("call_pal 129 # bugchk")
#define PAGE_BUG(page) BUG()
+/* 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 /* !ASSEMBLY */
/* to align the pointer to the (next) page boundary */
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