add weak entry definition

Signed-off-by: David Feng <fenghua@phytium.com.cn>

diff --git a/include/linux/linkage.h b/include/linux/linkage.h
index 39c712eac5b912b6cd2bd1ece7abf17213125552..7435fcd0262bd4770159e1bd3ebf6d5a9444a54f 100644 (file)
--- a/include/linux/linkage.h
+++ b/include/linux/linkage.h
@@ -48,6 +48,10 @@
        .globl SYMBOL_NAME(name); \
        LENTRY(name)
 
+#define WEAK(name) \
+       .weak SYMBOL_NAME(name); \
+       LENTRY(name)
+
 #ifndef END
 #define END(name) \
        .size name, .-name