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lib/dynamic_debug.c: use kstrdup_const

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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@rasmusvillemoes.dk>
Cc: Jason Baron <jbaron@akamai.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Rasmus Villemoes 2015-11-06 16:30:15 -08:00 committed by Linus Torvalds
parent eac44a5e07
commit 3e406b1d7c
1 changed files with 4 additions and 4 deletions
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8
lib/dynamic_debug.c
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@ -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);
}