Commit 6f268327 authored by Huang Xiaojia's avatar Huang Xiaojia Committed by Michael Ellerman
Browse files

powerpc: pseries: Constify struct kobj_type 



'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: default avatarHuang Xiaojia <huangxiaojia2@huawei.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240826150957.3500237-3-huangxiaojia2@huawei.com
parent 7492ca36

arch/powerpc/platforms/pseries/vas-sysfs.c

+2 −2
Original line number Diff line number Diff line
@@ -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,