Changeset 679 for GPL/trunk/include/asm/page.h

Timestamp:

Mar 18, 2021, 8:57:36 PM (4 years ago)

Author:

David Azarewicz

Message:

Merge changes from Paul's uniaud32next branch.

Location:

GPL/trunk

Files:

• . (modified) (1 prop)
• include/asm/page.h (modified) (1 diff)

GPL/trunk/include/asm/page.h

@@ -71 +71 @@
 #define page_to_pfn(page)       (page_to_phys(page) >> PAGE_SHIFT)
 
+/* Pure 2^n version of get_order */
+static 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 /* _I386_PAGE_H */