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-rw-r--r--include/linux/compiler-gcc4.h8
1 files changed, 5 insertions, 3 deletions
diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h
index 974f5b7bb205..09992718f9e8 100644
--- a/include/linux/compiler-gcc4.h
+++ b/include/linux/compiler-gcc4.h
@@ -2,8 +2,10 @@
2#error "Please don't include <linux/compiler-gcc4.h> directly, include <linux/compiler.h> instead." 2#error "Please don't include <linux/compiler-gcc4.h> directly, include <linux/compiler.h> instead."
3#endif 3#endif
4 4
5/* These definitions are for GCC v4.x. */ 5/* GCC 4.1.[01] miscompiles __weak */
6#include <linux/compiler-gcc.h> 6#if __GNUC_MINOR__ == 1 && __GNUC_PATCHLEVEL__ <= 1
7# error Your version of gcc miscompiles the __weak directive
8#endif
7 9
8#define __used __attribute__((__used__)) 10#define __used __attribute__((__used__))
9#define __must_check __attribute__((warn_unused_result)) 11#define __must_check __attribute__((warn_unused_result))
@@ -16,7 +18,7 @@
16 */ 18 */
17#define uninitialized_var(x) x = x 19#define uninitialized_var(x) x = x
18 20
19#if !(__GNUC__ == 4 && __GNUC_MINOR__ < 3) 21#if __GNUC_MINOR__ >= 3
20/* Mark functions as cold. gcc will assume any path leading to a call 22/* Mark functions as cold. gcc will assume any path leading to a call
21 to them will be unlikely. This means a lot of manual unlikely()s 23 to them will be unlikely. This means a lot of manual unlikely()s
22 are unnecessary now for any paths leading to the usual suspects 24 are unnecessary now for any paths leading to the usual suspects