kobject: convert kernel_kset to be a kobject

kernel_kset does not need to be a kset, but a much simpler kobject now
that we have kobj_attributes.

We also rename kernel_kset to kernel_kobj to catch all users of this
symbol with a build error instead of an easy-to-ignore build warning.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 files changed, 18 insertions, 19 deletions

diff --git a/fs/configfs/mount.c b/fs/configfs/mount.c
index c4ee7f05de8b..54bf0db0d4b0 100644
--- a/fs/configfs/mount.c
+++ b/fs/configfs/mount.c
@@ -140,7 +140,7 @@ static int __init configfs_init(void)
         if (!configfs_dir_cachep)
                 goto out;
 
-        config_kobj = kobject_create_and_add("config", &kernel_kset->kobj);
+        config_kobj = kobject_create_and_add("config", kernel_kobj);
         if (!config_kobj) {
                 kmem_cache_destroy(configfs_dir_cachep);
                 configfs_dir_cachep = NULL;
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index 5ce92c3d3b59..97f6381c36c2 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -432,7 +432,7 @@ static int __init debugfs_init(void)
 {
         int retval;
 
-        debug_kobj = kobject_create_and_add("debug", &kernel_kset->kobj);
+        debug_kobj = kobject_create_and_add("debug", kernel_kobj);
         if (!debug_kobj)
                 return -EINVAL;
 
diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c
index 0828beb2d35d..e64b0dc664f3 100644
--- a/fs/dlm/lockspace.c
+++ b/fs/dlm/lockspace.c
@@ -223,7 +223,7 @@ int dlm_lockspace_init(void)
         INIT_LIST_HEAD(&lslist);
         spin_lock_init(&lslist_lock);
 
-        dlm_kset = kset_create_and_add("dlm", NULL, &kernel_kset->kobj);
+        dlm_kset = kset_create_and_add("dlm", NULL, kernel_kobj);
         if (!dlm_kset) {
                 printk(KERN_WARNING "%s: can not create kset\n", __FUNCTION__);
                 return -ENOMEM;
diff --git a/fs/gfs2/locking/dlm/sysfs.c b/fs/gfs2/locking/dlm/sysfs.c
index 1a92b6f7bc10..e5a4fbf7265f 100644
--- a/fs/gfs2/locking/dlm/sysfs.c
+++ b/fs/gfs2/locking/dlm/sysfs.c
@@ -219,7 +219,7 @@ void gdlm_kobject_release(struct gdlm_ls *ls)
 
 int gdlm_sysfs_init(void)
 {
-        gdlm_kset = kset_create_and_add("lock_dlm", NULL, &kernel_kset->kobj);
+        gdlm_kset = kset_create_and_add("lock_dlm", NULL, kernel_kobj);
         if (!gdlm_kset) {
                 printk(KERN_WARNING "%s: can not create kset\n", __FUNCTION__);
                 return -ENOMEM;
diff --git a/include/linux/kobject.h b/include/linux/kobject.h
index 9da3523e4a65..0930efdcc094 100644
--- a/include/linux/kobject.h
+++ b/include/linux/kobject.h
@@ -198,8 +198,8 @@ extern struct kobject * kset_find_obj(struct kset *, const char *);
 #define set_kset_name(str)      .kset = { .kobj = { .k_name = str } }
 
 
-/* The global /sys/kernel/ kset for people to chain off of */
-extern struct kset *kernel_kset;
+/* The global /sys/kernel/ kobject for people to chain off of */
+extern struct kobject *kernel_kobj;
 /* The global /sys/hypervisor/ kobject for people to chain off of */
 extern struct kobject *hypervisor_kobj;
 /* The global /sys/power/ kset for people to chain off of */
diff --git a/kernel/ksysfs.c b/kernel/ksysfs.c
index 45e646585605..1081aff5fb9e 100644
--- a/kernel/ksysfs.c
+++ b/kernel/ksysfs.c
@@ -101,8 +101,8 @@ static struct bin_attribute notes_attr = {
         .read = &notes_read,
 };
 
-struct kset *kernel_kset;
-EXPORT_SYMBOL_GPL(kernel_kset);
+struct kobject *kernel_kobj;
+EXPORT_SYMBOL_GPL(kernel_kobj);
 
 static struct attribute * kernel_attrs[] = {
 #if defined(CONFIG_HOTPLUG) && defined(CONFIG_NET)
@@ -125,18 +125,18 @@ static int __init ksysfs_init(void)
 {
         int error;
 
-        kernel_kset = kset_create_and_add("kernel", NULL, NULL);
-        if (!kernel_kset) {
+        kernel_kobj = kobject_create_and_add("kernel", NULL);
+        if (!kernel_kobj) {
                 error = -ENOMEM;
                 goto exit;
         }
-        error = sysfs_create_group(&kernel_kset->kobj, &kernel_attr_group);
+        error = sysfs_create_group(kernel_kobj, &kernel_attr_group);
         if (error)
                 goto kset_exit;
 
         if (notes_size > 0) {
                 notes_attr.size = notes_size;
-                error = sysfs_create_bin_file(&kernel_kset->kobj, &notes_attr);
+                error = sysfs_create_bin_file(kernel_kobj, &notes_attr);
                 if (error)
                         goto group_exit;
         }
@@ -150,11 +150,11 @@ static int __init ksysfs_init(void)
 
 notes_exit:
         if (notes_size > 0)
-                sysfs_remove_bin_file(&kernel_kset->kobj, &notes_attr);
+                sysfs_remove_bin_file(kernel_kobj, &notes_attr);
 group_exit:
-        sysfs_remove_group(&kernel_kset->kobj, &kernel_attr_group);
+        sysfs_remove_group(kernel_kobj, &kernel_attr_group);
 kset_exit:
-        kset_unregister(kernel_kset);
+        kobject_unregister(kernel_kobj);
 exit:
         return error;
 }
diff --git a/kernel/user.c b/kernel/user.c
index 5a106f3fdf05..7f17e6e8fd65 100644
--- a/kernel/user.c
+++ b/kernel/user.c
@@ -201,7 +201,7 @@ done:
  */
 int __init uids_sysfs_init(void)
 {
-        uids_kset = kset_create_and_add("uids", NULL, &kernel_kset->kobj);
+        uids_kset = kset_create_and_add("uids", NULL, kernel_kobj);
         if (!uids_kset)
                 return -ENOMEM;
 
diff --git a/mm/slub.c b/mm/slub.c
index b6c79462157e..d26177fb293b 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -4091,8 +4091,7 @@ static int __init slab_sysfs_init(void)
         struct kmem_cache *s;
         int err;
 
-        slab_kset = kset_create_and_add("slab", &slab_uevent_ops,
-                                        &kernel_kset->kobj);
+        slab_kset = kset_create_and_add("slab", &slab_uevent_ops, kernel_kobj);
         if (!slab_kset) {
                 printk(KERN_ERR "Cannot register slab subsystem.\n");
                 return -ENOSYS;
diff --git a/security/inode.c b/security/inode.c
index dbe040ac0549..def0cc1b07f2 100644
--- a/security/inode.c
+++ b/security/inode.c
@@ -321,7 +321,7 @@ static int __init securityfs_init(void)
 {
         int retval;
 
-        security_kobj = kobject_create_and_add("security", &kernel_kset->kobj);
+        security_kobj = kobject_create_and_add("security", kernel_kobj);
         if (!security_kobj)
                 return -EINVAL;