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s390/uv: Refactor uv-sysfs creation

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Streamline the sysfs generation to make it more extensible.
Add a function to create a sysfs entry in the uv-sysfs dir.
Use this function for the query directory.

Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Christoph Schlameuss <schlameuss@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
Link: https://lore.kernel.org/r/20241015113940.3088249-2-seiden@linux.ibm.com
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Steffen Eiden 2024-10-15 13:39:39 +02:00 committed by Heiko Carstens
parent c3a04f7e28
commit bb4ad73a28
1 changed files with 22 additions and 10 deletions
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32
arch/s390/kernel/uv.c
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@ -753,7 +753,24 @@ static const struct attribute *uv_prot_virt_attrs[] = {
static struct kset *uv_query_kset;
static struct kobject *uv_kobj;
static int __init uv_info_init(void)
static int __init uv_sysfs_dir_init(const struct attribute_group *grp,
struct kset **uv_dir_kset, const char *name)
{
struct kset *kset;
int rc;
kset = kset_create_and_add(name, NULL, uv_kobj);
if (!kset)
return -ENOMEM;
*uv_dir_kset = kset;
rc = sysfs_create_group(&kset->kobj, grp);
if (rc)
kset_unregister(kset);
return rc;
}
static int __init uv_sysfs_init(void)
{
int rc = -ENOMEM;
@ -768,17 +785,12 @@ static int __init uv_info_init(void)
if (rc)
goto out_kobj;
uv_query_kset = kset_create_and_add("query", NULL, uv_kobj);
if (!uv_query_kset) {
rc = -ENOMEM;
rc = uv_sysfs_dir_init(&uv_query_attr_group, &uv_query_kset, "query");
if (rc)
goto out_ind_files;
}
rc = sysfs_create_group(&uv_query_kset->kobj, &uv_query_attr_group);
if (!rc)
return 0;
return 0;
kset_unregister(uv_query_kset);
out_ind_files:
sysfs_remove_files(uv_kobj, uv_prot_virt_attrs);
out_kobj:
@ -786,4 +798,4 @@ out_kobj:
kobject_put(uv_kobj);
return rc;
}
device_initcall(uv_info_init);
device_initcall(uv_sysfs_init);