[PATCH] lockdep: locking init debugging improvement

[karo-tx-linux.git] / kernel / module.c

diff --git a/kernel/module.c b/kernel/module.c
index 281172f01e9a032c6285ce6a43c2f8d97c42aa75..0351625767b112d4908eb74fabb03e4e868499ce 100644 (file)
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2159,6 +2159,29 @@ const struct exception_table_entry *search_module_extables(unsigned long addr)
        return e;
 }
 
+/*
+ * Is this a valid module address?
+ */
+int is_module_address(unsigned long addr)
+{
+       unsigned long flags;
+       struct module *mod;
+
+       spin_lock_irqsave(&modlist_lock, flags);
+
+       list_for_each_entry(mod, &modules, list) {
+               if (within(addr, mod->module_core, mod->core_size)) {
+                       spin_unlock_irqrestore(&modlist_lock, flags);
+                       return 1;
+               }
+       }
+
+       spin_unlock_irqrestore(&modlist_lock, flags);
+
+       return 0;
+}
+
+
 /* Is this a valid kernel address?  We don't grab the lock: we are oopsing. */
 struct module *__module_text_address(unsigned long addr)
 {