about __BITS_PER_LONG

[Guan Xuetao]

Hi, Arnd:

  When using asm-generic/bitsperlong.h, I think that __BITS_PER_LONG could be the
same as BITS_PER_LONG if-not-defined. And this could avoid the duplicated macros
in almost all architectures.

Regards.

Guan Xuetao

---
diff --git a/include/asm-generic/bitsperlong.h b/include/asm-generic/bitsperlong.h
index 4ae54e0..31d032a 100644
--- a/include/asm-generic/bitsperlong.h
+++ b/include/asm-generic/bitsperlong.h
@@ -9,7 +9,11 @@
  * to decide it, but rather check a compiler provided macro.
  */
 #ifndef __BITS_PER_LONG
-#define __BITS_PER_LONG 32
+#   ifdef CONFIG_64BIT
+#	define __BITS_PER_LONG 64
+#   else
+#	define __BITS_PER_LONG 32
+#   endif /* CONFIG_64BIT */
 #endif
 
 #ifdef __KERNEL__

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