X-Git-Url: https://jxself.org/git/?a=blobdiff_plain;f=include%2Flinux%2Fcompiler.h;h=e2656ae2cfc198270c956a8cdccdf1fb4139660b;hb=2cc794206920a0337c4f48b7717c22f3fe0d0974;hp=ec4edf7f66dde9c378cad379c021f4d2173ba5a9;hpb=0eb34487ee8e70ecb8e4ee2ed5092b2788eb7f26;p=carl9170fw.git

diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index ec4edf7..e2656ae 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -17,15 +17,16 @@
 #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 __section(s)	__attribute__((section("." # s)))
-#define __packed	__attribute__((packed))
+#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)
@@ -77,7 +78,7 @@
 
 #define container_of(ptr, type, member) ({			\
 	const typeof(((type *)0)->member) * __mptr = (ptr);	\
-	(type *)((char *)__mptr - offsetof(type, member)); })
+	(type *)(((unsigned long)__mptr - offsetof(type, member))); })
 
 #define MAX_ERRNO	4095
 
@@ -103,4 +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 */