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mm/slab: create sysfs attribute through default_groups

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The driver core can automatically create custom type attributes.
This makes the code and error-handling shorter.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Harry Yoo <harry.yoo@oracle.com>
Link: https://patch.msgid.link/20260223-sysfs-const-slub-v1-1-ff86ffc26fff@weissschuh.net
Signed-off-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
This commit is contained in:
Thomas Weißschuh
2026-02-23 22:37:43 +01:00
committed by Vlastimil Babka (SUSE)
parent 6de23f81a5
commit 5aa2a02b98
1 changed files with 2 additions and 10 deletions
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12
mm/slub.c
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@@ -9317,9 +9317,7 @@ static struct attribute *slab_attrs[] = {
NULL
};
static const struct attribute_group slab_attr_group = {
.attrs = slab_attrs,
};
ATTRIBUTE_GROUPS(slab);
static ssize_t slab_attr_show(struct kobject *kobj,
struct attribute *attr,
@@ -9366,6 +9364,7 @@ static const struct sysfs_ops slab_sysfs_ops = {
static const struct kobj_type slab_ktype = {
.sysfs_ops = &slab_sysfs_ops,
.release = kmem_cache_release,
.default_groups = slab_groups,
};
static struct kset *slab_kset;
@@ -9453,10 +9452,6 @@ static int sysfs_slab_add(struct kmem_cache *s)
if (err)
goto out;
err = sysfs_create_group(&s->kobj, &slab_attr_group);
if (err)
goto out_del_kobj;
if (!unmergeable) {
/* Setup first alias */
sysfs_slab_alias(s, s->name);
@@ -9465,9 +9460,6 @@ static int sysfs_slab_add(struct kmem_cache *s)
if (!unmergeable)
kfree(name);
return err;
out_del_kobj:
kobject_del(&s->kobj);
goto out;
}
void sysfs_slab_unlink(struct kmem_cache *s)