X-Git-Url: https://jxself.org/git/?a=blobdiff_plain;f=include%2Flinux%2Fcompiler.h;h=e2656ae2cfc198270c956a8cdccdf1fb4139660b;hb=f03a59a3d7d877ce0eb52e8a7fd199a0237df784;hp=f4c6ab1337ca61d11e82d142ac761a40b1294b58;hpb=dc6f07cd80678ff56077ce7d9b2d1bbded6caa2b;p=carl9170fw.git

diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index f4c6ab1..e2656ae 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -17,18 +17,17 @@
 #ifndef __SHARED_COMPILER_H
 #define __SHARED_COMPILER_H
 
-#define __noinline	__attribute__((noinline))
 #define __noreturn	__attribute__((noreturn))
 #define __inline	__attribute__((always_inline))
 #define __hot		__attribute__((hot))
 #define __cold		__attribute__((cold))
-#define __unused	__attribute__((unused))
 #define __force		__attribute__((force))
 #define __in_section(s)	__attribute__((section("." # s)))
-#define __aligned(a)	__attribute__((aligned(a)))
-#define __packed	__attribute__((packed))
 #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)
 
@@ -105,4 +104,42 @@ 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;
+}
+
+static inline unsigned int hweight16(unsigned int w)
+{
+        unsigned int res = w - ((w >> 1) & 0x5555);
+        res = (res & 0x3333) + ((res >> 2) & 0x3333);
+        res = (res + (res >> 4)) & 0x0F0F;
+        return (res + (res >> 8)) & 0x00FF;
+}
+
+/**
+ * DECLARE_FLEX_ARRAY() - Declare a flexible array usable in a union
+ *
+ * @TYPE: The type of each flexible array element
+ * @NAME: The name of the flexible array member
+ *
+ * In order to have a flexible array member in a union or alone in a
+ * struct, it needs to be wrapped in an anonymous struct with at least 1
+ * named member, but that member can be empty.
+ */
+#define DECLARE_FLEX_ARRAY(TYPE, NAME)	\
+	struct { \
+		struct { } __empty_ ## NAME; \
+		TYPE NAME[]; \
+	}
+
+#define __bf_shf(x) (__builtin_ffsll(x) - 1)
+
+#define FIELD_MAX(_mask)                                                \
+        ({                                                              \
+                (typeof(_mask))((_mask) >> __bf_shf(_mask));            \
+        })
+
 #endif /* __SHARED_COMPILER_H */