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powerpc: pseries: Constify struct kobj_type

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'struct kobj_type' is not modified. It is only used in kobject_init()
which takes a 'const struct kobj_type *ktype' parameter.

Constifying this structure moves some data to a read-only section,
so increase over all security.

On a x86_64, compiled with ppc64 defconfig:
Before:
======
   text	   data	    bss	    dec	    hex	filename
   1885	    368	     16	   2269	    8dd	arch/powerpc/platforms/pseries/vas-sysfs.o

After:
======
   text	   data	    bss	    dec	    hex	filename
   1981	    272	     16	   2269	    8dd	arch/powerpc/platforms/pseries/vas-sysfs.o

Signed-off-by: Huang Xiaojia <huangxiaojia2@huawei.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240826150957.3500237-3-huangxiaojia2@huawei.com
This commit is contained in:
Huang Xiaojia 2024-08-26 23:09:57 +08:00 committed by Michael Ellerman
parent 7492ca369e
commit 6f2683274d
1 changed files with 2 additions and 2 deletions
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4
arch/powerpc/platforms/pseries/vas-sysfs.c
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@ -162,13 +162,13 @@ static const struct sysfs_ops vas_sysfs_ops = {
.store = vas_type_store,
};
static struct kobj_type vas_def_attr_type = {
static const struct kobj_type vas_def_attr_type = {
.release = vas_type_release,
.sysfs_ops = &vas_sysfs_ops,
.default_groups = vas_def_capab_groups,
};
static struct kobj_type vas_qos_attr_type = {
static const struct kobj_type vas_qos_attr_type = {
.release = vas_type_release,
.sysfs_ops = &vas_sysfs_ops,
.default_groups = vas_qos_capab_groups,