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SubjectRe: [2.5-bk] Module loader compile bug
Date
In message <20021112050319.GA3651@paypal.com> you write:
> I realize you're still working on this, but current bk is broken if
> you turn off module unload support. In include/linux/module.h we get:
>
> #else /*!CONFIG_MODULE_UNLOAD*/
> <snip>
> #define symbol_put_addr(p) do { } while(0)
>
> #endif /* CONFIG_MODULE_UNLOAD */
>
> Which upsets this line in kernel/module.c
>
> void symbol_put_addr(void *addr)
>
> After the preprocessor gets a hold of it all, gcc doesn't know what to
> make of "void do { } while(0)".

Yep, symbol_put_addr() in module.c should be moved under __symbol_put.

Patch is fairly trivial, does this work for you?
Rusty.
--
Anyone who quotes me in their sig is an idiot. -- Rusty Russell.

--- working-2.5.47-module-alias/kernel/module.c.~1~ 2002-11-12 22:10:43.000000000 +1100
+++ working-2.5.47-module-alias/kernel/module.c 2002-11-13 04:22:47.000000000 +1100
@@ -492,6 +492,28 @@ void __symbol_put(const char *symbol)
}
EXPORT_SYMBOL(__symbol_put);

+void symbol_put_addr(void *addr)
+{
+ struct kernel_symbol_group *ks;
+ unsigned long flags;
+
+ spin_lock_irqsave(&modlist_lock, flags);
+ list_for_each_entry(ks, &symbols, list) {
+ unsigned int i;
+
+ for (i = 0; i < ks->num_syms; i++) {
+ if (ks->syms[i].value == (unsigned long)addr) {
+ module_put(ks->owner);
+ spin_unlock_irqrestore(&modlist_lock, flags);
+ return;
+ }
+ }
+ }
+ spin_unlock_irqrestore(&modlist_lock, flags);
+ BUG();
+}
+EXPORT_SYMBOL_GPL(symbol_put_addr);
+
#else /* !CONFIG_MODULE_UNLOAD */
static void print_unload_info(struct seq_file *m, struct module *mod)
{
@@ -716,28 +738,6 @@ void *__symbol_get(const char *symbol)
}
EXPORT_SYMBOL_GPL(__symbol_get);

-void symbol_put_addr(void *addr)
-{
- struct kernel_symbol_group *ks;
- unsigned long flags;
-
- spin_lock_irqsave(&modlist_lock, flags);
- list_for_each_entry(ks, &symbols, list) {
- unsigned int i;
-
- for (i = 0; i < ks->num_syms; i++) {
- if (ks->syms[i].value == (unsigned long)addr) {
- module_put(ks->owner);
- spin_unlock_irqrestore(&modlist_lock, flags);
- return;
- }
- }
- }
- spin_unlock_irqrestore(&modlist_lock, flags);
- BUG();
-}
-EXPORT_SYMBOL_GPL(symbol_put_addr);
-
/* Transfer one ELF section to the correct (init or core) area. */
static void *copy_section(const char *name,
void *base,
-
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