X-Git-Url: https://jxself.org/git/?a=blobdiff_plain;f=include%2Flinux%2Fcompiler.h;h=e40d8aec3c45f5ab284e03156bdcab93f31e97b5;hb=2391e7e514785584c32defb9a15d82c1dab837fa;hp=9ef76ec7311f25c79d9ed54d436501fe6f12b5b4;hpb=f3ef1af2e8ab1e66f16ca68a22a4089da0ee3b4e;p=carl9170fw.git

diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index 9ef76ec..e40d8ae 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -25,6 +25,9 @@
 #define __in_section(s)	__attribute__((section("." # s)))
 #define __visible	__attribute__((externally_visible))
 
+#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
+
+
 #define BUILD_BUG_ON(condition)	((void)sizeof(char[1 - 2*!!(condition)]))
 #define BUILD_BUG_ON_ZERO(e) (sizeof(char[1 - 2 * !!(e)]) - 1)
 
@@ -101,4 +104,11 @@ static inline long IS_ERR_OR_NULL(const void *ptr)
 	return !ptr || IS_ERR_VALUE((unsigned long)ptr);
 }
 
+static inline unsigned int hweight8(unsigned int w)
+{
+        unsigned int res = w - ((w >> 1) & 0x55);
+        res = (res & 0x33) + ((res >> 2) & 0x33);
+        return (res + (res >> 4)) & 0x0F;
+}
+
 #endif /* __SHARED_COMPILER_H */