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Date: Wed, 9 Sep 2015 23:40:42 +0200
From: Rasmus Villemoes <linux@...musvillemoes.dk>
To: Jason Baron <jbaron@...mai.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
Rasmus Villemoes <linux@...musvillemoes.dk>,
linux-kernel@...r.kernel.org
Subject: [PATCH] lib/dynamic_debug.c: use kstrdup_const
Using kstrdup_const, thus reusing .rodata when possible, saves around
2 kB of runtime memory on my laptop/.config combination.
Signed-off-by: Rasmus Villemoes <linux@...musvillemoes.dk>
---
lib/dynamic_debug.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index e491e02eff54..e3952e9c8ec0 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -42,7 +42,7 @@ extern struct _ddebug __stop___verbose[];
struct ddebug_table {
struct list_head link;
- char *mod_name;
+ const char *mod_name;
unsigned int num_ddebugs;
struct _ddebug *ddebugs;
};
@@ -841,12 +841,12 @@ int ddebug_add_module(struct _ddebug *tab, unsigned int n,
const char *name)
{
struct ddebug_table *dt;
- char *new_name;
+ const char *new_name;
dt = kzalloc(sizeof(*dt), GFP_KERNEL);
if (dt == NULL)
return -ENOMEM;
- new_name = kstrdup(name, GFP_KERNEL);
+ new_name = kstrdup_const(name, GFP_KERNEL);
if (new_name == NULL) {
kfree(dt);
return -ENOMEM;
@@ -907,7 +907,7 @@ int ddebug_dyndbg_module_param_cb(char *param, char *val, const char *module)
static void ddebug_table_free(struct ddebug_table *dt)
{
list_del_init(&dt->link);
- kfree(dt->mod_name);
+ kfree_const(dt->mod_name);
kfree(dt);
}
--
2.1.3
--
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