linux-kernel - [PATCH 1/6] dyndbg: recode for stronger precondition

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Date:   Wed, 29 Sep 2021 12:37:30 -0600
From:   Jim Cromie <jim.cromie@...il.com>
To:     jbaron@...mai.com, gregkh@...uxfoundation.org,
        linux-kernel@...r.kernel.org
Cc:     Jim Cromie <jim.cromie@...il.com>
Subject: [PATCH 1/6] dyndbg: recode for stronger precondition

The table of struct _ddebugs, due to its construction by the linker,
has an important property; namely that its "equal" fields have actual
ptr-equality, not just strcmp-equality.  Lets recognize that truth in
dynamic_debug_init(), while slicing the builtin table into a
per-module list.
---
 lib/dynamic_debug.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index cb5abb42c16a..817a87e9c37f 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -1101,7 +1101,7 @@ static int __init dynamic_debug_init(void)
 	iter_start = iter;
 	for (; iter < __stop___dyndbg; iter++) {
 		entries++;
-		if (strcmp(modname, iter->modname)) {
+		if (modname != iter->modname) {
 			modct++;
 			ret = ddebug_add_module(iter_start, n, modname);
 			if (ret)
-- 
2.31.1