attribute_groups are not supposed to change at runtime. All functions working with attribute_groups provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const.
File size before: text data bss dec hex filename 1120 544 16 1680 690 kernel/ksysfs.o File size After adding 'const': text data bss dec hex filename 1160 480 16 1656 678 kernel/ksysfs.o Signed-off-by: Arvind Yadav <arvind.yadav...@gmail.com> --- kernel/ksysfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/ksysfs.c b/kernel/ksysfs.c index 23cd706..df1a9aa 100644 --- a/kernel/ksysfs.c +++ b/kernel/ksysfs.c @@ -234,7 +234,7 @@ static ssize_t notes_read(struct file *filp, struct kobject *kobj, NULL }; -static struct attribute_group kernel_attr_group = { +static const struct attribute_group kernel_attr_group = { .attrs = kernel_attrs, }; -- 1.9.1