X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=include%2Flinux%2Fcompiler-gcc4.h;h=974f5b7bb205b749a0eb8b2e959b95e829244602;hb=98c99d7c27973538081a809c114b8d5c6195ecfa;hp=a03e9398a6c2ba0d986405f8bec84f7f0141b786;hpb=38cb162b7585d837083b8365da1eb32687c5164c;p=linux-2.6-omap-h63xx.git

diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h
index a03e9398a6c..974f5b7bb20 100644
--- a/include/linux/compiler-gcc4.h
+++ b/include/linux/compiler-gcc4.h
@@ -1,19 +1,11 @@
-/* Never include this file directly.  Include <linux/compiler.h> instead.  */
+#ifndef __LINUX_COMPILER_H
+#error "Please don't include <linux/compiler-gcc4.h> directly, include <linux/compiler.h> instead."
+#endif
 
 /* These definitions are for GCC v4.x.  */
 #include <linux/compiler-gcc.h>
 
-#ifdef CONFIG_FORCED_INLINING
-# undef inline
-# undef __inline__
-# undef __inline
-# define inline			inline		__attribute__((always_inline))
-# define __inline__		__inline__	__attribute__((always_inline))
-# define __inline		__inline	__attribute__((always_inline))
-#endif
-
 #define __used			__attribute__((__used__))
-#define __attribute_used__	__used			/* deprecated */
 #define __must_check 		__attribute__((warn_unused_result))
 #define __compiler_offsetof(a,b) __builtin_offsetof(a,b)
 #define __always_inline		inline __attribute__((always_inline))
@@ -23,3 +15,21 @@
  * code
  */
 #define uninitialized_var(x) x = x
+
+#if !(__GNUC__ == 4 && __GNUC_MINOR__ < 3)
+/* Mark functions as cold. gcc will assume any path leading to a call
+   to them will be unlikely.  This means a lot of manual unlikely()s
+   are unnecessary now for any paths leading to the usual suspects
+   like BUG(), printk(), panic() etc. [but let's keep them for now for
+   older compilers]
+
+   Early snapshots of gcc 4.3 don't support this and we can't detect this
+   in the preprocessor, but we can live with this because they're unreleased.
+   Maketime probing would be overkill here.
+
+   gcc also has a __attribute__((__hot__)) to move hot functions into
+   a special section, but I don't see any sense in this right now in
+   the kernel context */
+#define __cold			__attribute__((__cold__))
+
+#endif