module: replace VMLINUX_SYMBOL_STR() with __stringify() or string literal

With the special case handling for Blackfin and Metag was removed by
commit 94e58e0a ("export.h: remove code for prefixing symbols with
underscore"), VMLINUX_SYMBOL_STR() is now equivalent to __stringify().

Replace the remaining usages to prepare for the entire removal of
VMLINUX_SYMBOL_STR().
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Jessica Yu <jeyu@kernel.org>

include/linux/module.h

@@ -266,7 +266,7 @@ extern int modules_disabled; /* for sysctl */
 /* Get/put a kernel symbol (calls must be symmetric) */
 void *__symbol_get(const char *symbol);
 void *__symbol_get_gpl(const char *symbol);
-#define symbol_get(x) ((typeof(&x))(__symbol_get(VMLINUX_SYMBOL_STR(x))))
+#define symbol_get(x) ((typeof(&x))(__symbol_get(__stringify(x))))
 
 /* modules using other modules: kdb wants to see this. */
 struct module_use {
@@ -575,7 +575,7 @@ extern void __noreturn __module_put_and_exit(struct module *mod,
 #ifdef CONFIG_MODULE_UNLOAD
 int module_refcount(struct module *mod);
 void __symbol_put(const char *symbol);
-#define symbol_put(x) __symbol_put(VMLINUX_SYMBOL_STR(x))
+#define symbol_put(x) __symbol_put(__stringify(x))
 void symbol_put_addr(void *addr);
 
 /* Sometimes we know we already have a refcount, and it's easier not

kernel/module.c

@@ -1341,14 +1341,12 @@ static inline int check_modstruct_version(const struct load_info *info,
 	 * locking is necessary -- use preempt_disable() to placate lockdep.
 	 */
 	preempt_disable();
-	if (!find_symbol(VMLINUX_SYMBOL_STR(module_layout), NULL,
-			 &crc, true, false)) {
+	if (!find_symbol("module_layout", NULL, &crc, true, false)) {
 		preempt_enable();
 		BUG();
 	}
 	preempt_enable();
-	return check_version(info, VMLINUX_SYMBOL_STR(module_layout),
-			     mod, crc);
+	return check_version(info, "module_layout", mod, crc);
 }
 
 /* First part is kernel version, which we ignore if module has crcs. */