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padata: Constify padata_sysfs_entry structs

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These structs are never modified.

To prevent malicious or accidental modifications due to bugs,
mark them as const.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Thomas Weißschuh
2025-12-26 17:03:18 +01:00
committed by Herbert Xu
parent a3f8e00991
commit c1b12cd933
1 changed files with 11 additions and 11 deletions
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22
kernel/padata.c
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@@ -819,7 +819,7 @@ static void __padata_free(struct padata_instance *pinst)
#define kobj2pinst(_kobj) \
container_of(_kobj, struct padata_instance, kobj)
#define attr2pentry(_attr) \
container_of(_attr, struct padata_sysfs_entry, attr)
container_of_const(_attr, struct padata_sysfs_entry, attr)
static void padata_sysfs_release(struct kobject *kobj)
{
@@ -829,13 +829,13 @@ static void padata_sysfs_release(struct kobject *kobj)
struct padata_sysfs_entry {
struct attribute attr;
ssize_t (*show)(struct padata_instance *, struct attribute *, char *);
ssize_t (*store)(struct padata_instance *, struct attribute *,
ssize_t (*show)(struct padata_instance *, const struct attribute *, char *);
ssize_t (*store)(struct padata_instance *, const struct attribute *,
const char *, size_t);
};
static ssize_t show_cpumask(struct padata_instance *pinst,
struct attribute *attr, char *buf)
const struct attribute *attr, char *buf)
{
struct cpumask *cpumask;
ssize_t len;
@@ -853,7 +853,7 @@ static ssize_t show_cpumask(struct padata_instance *pinst,
}
static ssize_t store_cpumask(struct padata_instance *pinst,
struct attribute *attr,
const struct attribute *attr,
const char *buf, size_t count)
{
cpumask_var_t new_cpumask;
@@ -880,10 +880,10 @@ out:
}
#define PADATA_ATTR_RW(_name, _show_name, _store_name) \
static struct padata_sysfs_entry _name##_attr = \
static const struct padata_sysfs_entry _name##_attr = \
__ATTR(_name, 0644, _show_name, _store_name)
#define PADATA_ATTR_RO(_name, _show_name) \
static struct padata_sysfs_entry _name##_attr = \
#define PADATA_ATTR_RO(_name, _show_name) \
static const struct padata_sysfs_entry _name##_attr = \
__ATTR(_name, 0400, _show_name, NULL)
PADATA_ATTR_RW(serial_cpumask, show_cpumask, store_cpumask);
@@ -894,7 +894,7 @@ PADATA_ATTR_RW(parallel_cpumask, show_cpumask, store_cpumask);
* serial_cpumask [RW] - cpumask for serial workers
* parallel_cpumask [RW] - cpumask for parallel workers
*/
static struct attribute *padata_default_attrs[] = {
static const struct attribute *const padata_default_attrs[] = {
&serial_cpumask_attr.attr,
&parallel_cpumask_attr.attr,
NULL,
@@ -904,8 +904,8 @@ ATTRIBUTE_GROUPS(padata_default);
static ssize_t padata_sysfs_show(struct kobject *kobj,
struct attribute *attr, char *buf)
{
const struct padata_sysfs_entry *pentry;
struct padata_instance *pinst;
struct padata_sysfs_entry *pentry;
ssize_t ret = -EIO;
pinst = kobj2pinst(kobj);
@@ -919,8 +919,8 @@ static ssize_t padata_sysfs_show(struct kobject *kobj,
static ssize_t padata_sysfs_store(struct kobject *kobj, struct attribute *attr,
const char *buf, size_t count)
{
const struct padata_sysfs_entry *pentry;
struct padata_instance *pinst;
struct padata_sysfs_entry *pentry;
ssize_t ret = -EIO;
pinst = kobj2pinst(kobj);