Re: EXPORT_SYMBOL_NOVERS question

[Rusty Russell]

On Wed, 2004-11-03 at 00:10 -0800, vlobanov wrote:
> Hi,
> 
> I was looking over the /include/linux/module.h file, and the
> EXPORT_SYMBOL_NOVERS macro caught my eye. To quote the source:
> 
>   /* We don't mangle the actual symbol anymore, so no need for
>    * special casing EXPORT_SYMBOL_NOVERS.  FIXME: Deprecated */
>   #define EXPORT_SYMBOL_NOVERS(sym) EXPORT_SYMBOL(sym)
> 
> A quick grep through the tree brought up no usage cases for this macro.
> Is there any reason to keep it around, instead of cutting it out, as the
> FIXME comment seems to suggest?

Yep, it's time.

Rusty.

Name: Remove EXPORT_SYMBOL_NOVERS
Status: Trivial
Signed-off-by: Rusty Russell <rusty@xxxxxxxxxxxxxxx>

Vadim Lobanov points out that EXPORT_SYMBOL_NOVERS is no longer used;
in fact, SH still uses it, but once we fix that, the kernel is clean.
Remove it.

Index: linux-2.6.10-rc2-bk11-Module/arch/sh/kernel/sh_ksyms.c
===================================================================
--- linux-2.6.10-rc2-bk11-Module.orig/arch/sh/kernel/sh_ksyms.c	2004-11-16 15:29:12.000000000 +1100
+++ linux-2.6.10-rc2-bk11-Module/arch/sh/kernel/sh_ksyms.c	2004-11-29 09:38:48.007889896 +1100
@@ -89,7 +89,7 @@
 
 EXPORT_SYMBOL(__div64_32);
 
-#define DECLARE_EXPORT(name) extern void name(void);EXPORT_SYMBOL_NOVERS(name)
+#define DECLARE_EXPORT(name) extern void name(void);EXPORT_SYMBOL(name)
 
 /* These symbols are generated by the compiler itself */
 DECLARE_EXPORT(__udivsi3);
@@ -100,7 +100,7 @@
 DECLARE_EXPORT(__lshrdi3);
 DECLARE_EXPORT(__movstr);
 
-EXPORT_SYMBOL_NOVERS(strcpy);
+EXPORT_SYMBOL(strcpy);
 
 #ifdef CONFIG_CPU_SH4
 DECLARE_EXPORT(__movstr_i4_even);
Index: linux-2.6.10-rc2-bk11-Module/Makefile
===================================================================
--- linux-2.6.10-rc2-bk11-Module.orig/Makefile	2004-11-29 07:48:40.000000000 +1100
+++ linux-2.6.10-rc2-bk11-Module/Makefile	2004-11-29 09:39:06.146132464 +1100
@@ -1166,7 +1166,7 @@
 quiet_cmd_tags = MAKE   $@
 define cmd_tags
 	rm -f $@; \
-	CTAGSF=`ctags --version | grep -i exuberant >/dev/null && echo "-I __initdata,__exitdata,EXPORT_SYMBOL,EXPORT_SYMBOL_NOVERS"`; \
+	CTAGSF=`ctags --version | grep -i exuberant >/dev/null && echo "-I __initdata,__exitdata,EXPORT_SYMBOL,EXPORT_SYMBOL_GPL"`; \
 	$(all-sources) | xargs ctags $$CTAGSF -a
 endef
 
Index: linux-2.6.10-rc2-bk11-Module/include/linux/module.h
===================================================================
--- linux-2.6.10-rc2-bk11-Module.orig/include/linux/module.h	2004-11-29 07:48:57.000000000 +1100
+++ linux-2.6.10-rc2-bk11-Module/include/linux/module.h	2004-11-29 09:39:31.970206608 +1100
@@ -206,10 +206,6 @@
 
 #endif
 
-/* We don't mangle the actual symbol anymore, so no need for
- * special casing EXPORT_SYMBOL_NOVERS.  FIXME: Deprecated */
-#define EXPORT_SYMBOL_NOVERS(sym) EXPORT_SYMBOL(sym)
-
 struct module_ref
 {
 	local_t count;
@@ -449,7 +445,6 @@
 #else /* !CONFIG_MODULES... */
 #define EXPORT_SYMBOL(sym)
 #define EXPORT_SYMBOL_GPL(sym)
-#define EXPORT_SYMBOL_NOVERS(sym)
 
 /* Given an address, look for it in the exception tables. */
 static inline const struct exception_table_entry *

-- 
A bad analogy is like a leaky screwdriver -- Richard Braakman

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