module: Always have struct mod_tree_root

In order to separate text and data, we need to setup
two rb trees.

This means that struct mod_tree_root is required even without
MODULES_TREE_LOOKUP.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Aaron Tomlin <atomlin@atomlin.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>

kernel/module/internal.h

@@ -143,15 +143,17 @@ static inline void module_decompress_cleanup(struct load_info *info)
 }
 #endif
 
-#ifdef CONFIG_MODULES_TREE_LOOKUP
 struct mod_tree_root {
+#ifdef CONFIG_MODULES_TREE_LOOKUP
 	struct latch_tree_root root;
+#endif
 	unsigned long addr_min;
 	unsigned long addr_max;
 };
 
 extern struct mod_tree_root mod_tree;
 
+#ifdef CONFIG_MODULES_TREE_LOOKUP
 void mod_tree_insert(struct module *mod);
 void mod_tree_remove_init(struct module *mod);
 void mod_tree_remove(struct module *mod);

kernel/module/main.c

@@ -74,7 +74,6 @@ static void do_free_init(struct work_struct *w);
 static DECLARE_WORK(init_free_wq, do_free_init);
 static LLIST_HEAD(init_free_list);
 
-#ifdef CONFIG_MODULES_TREE_LOOKUP
 struct mod_tree_root mod_tree __cacheline_aligned = {
 	.addr_min = -1UL,
 };
@@ -82,10 +81,6 @@ struct mod_tree_root mod_tree __cacheline_aligned = {
 #define module_addr_min mod_tree.addr_min
 #define module_addr_max mod_tree.addr_max
 
-#else /* !CONFIG_MODULES_TREE_LOOKUP */
-static unsigned long module_addr_min = -1UL, module_addr_max;
-#endif /* CONFIG_MODULES_TREE_LOOKUP */
-
 struct symsearch {
 	const struct kernel_symbol *start, *stop;
 	const s32 *crcs;