kobject: Constify struct kset_uevent_ops

Constify struct kset_uevent_ops.

This is part of the ops structure constification
effort started by Arjan van de Ven et al.

Benefits of this constification:

 * prevents modification of data that is shared
   (referenced) by many other structure instances
   at runtime

 * detects/prevents accidental (but not intentional)
   modification attempts on archs that enforce
   read-only kernel data at runtime

 * potentially better optimized code as the compiler
   can assume that the const data cannot be changed

 * the compiler/linker move const data into .rodata
   and therefore exclude them from false sharing

Signed-off-by: Emese Revfy <re.emese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2 files changed, 3 insertions, 3 deletions

diff --git a/lib/kobject.c b/lib/kobject.c
index b512b746d2af..cecf5a0ef6e1 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -789,7 +789,7 @@ static struct kobj_type kset_ktype = {
  * If the kset was not able to be created, NULL will be returned.
  */
 static struct kset *kset_create(const char *name,
-                                struct kset_uevent_ops *uevent_ops,
+                                const struct kset_uevent_ops *uevent_ops,
                                 struct kobject *parent_kobj)
 {
         struct kset *kset;
@@ -832,7 +832,7 @@ static struct kset *kset_create(const char *name,
  * If the kset was not able to be created, NULL will be returned.
  */
 struct kset *kset_create_and_add(const char *name,
-                                 struct kset_uevent_ops *uevent_ops,
+                                 const struct kset_uevent_ops *uevent_ops,
                                  struct kobject *parent_kobj)
 {
         struct kset *kset;
diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 920a3ca6e259..c9d3a3e8405d 100644
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -95,7 +95,7 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
         const char *subsystem;
         struct kobject *top_kobj;
         struct kset *kset;
-        struct kset_uevent_ops *uevent_ops;
+        const struct kset_uevent_ops *uevent_ops;
         u64 seq;
         int i = 0;
         int retval = 0;