From: Huang Xiaojia Date: Mon, 26 Aug 2024 15:09:56 +0000 (+0800) Subject: powerpc: powernv: Constify struct kobj_type X-Git-Tag: v6.12-rc1~135^2~14 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=7492ca369e98a45b55592456dc1b24d58b3392f5;p=linux-block.git powerpc: powernv: 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 3775 256 8 4039 fc7 arch/powerpc/platforms/powernv/opal-dump.o 2679 260 8 2947 b83 arch/powerpc/platforms/powernv/opal-elog.o After: ====== text data bss dec hex filename 3823 208 8 4039 fc7 arch/powerpc/platforms/powernv/opal-dump.o 2727 212 8 2947 b83 arch/powerpc/platforms/powernv/opal-elog.o Signed-off-by: Huang Xiaojia Signed-off-by: Michael Ellerman Link: https://msgid.link/20240826150957.3500237-2-huangxiaojia2@huawei.com --- diff --git a/arch/powerpc/platforms/powernv/opal-dump.c b/arch/powerpc/platforms/powernv/opal-dump.c index 16c5860f1372..608e4b68c5ea 100644 --- a/arch/powerpc/platforms/powernv/opal-dump.c +++ b/arch/powerpc/platforms/powernv/opal-dump.c @@ -210,7 +210,7 @@ static struct attribute *dump_default_attrs[] = { }; ATTRIBUTE_GROUPS(dump_default); -static struct kobj_type dump_ktype = { +static const struct kobj_type dump_ktype = { .sysfs_ops = &dump_sysfs_ops, .release = &dump_release, .default_groups = dump_default_groups, diff --git a/arch/powerpc/platforms/powernv/opal-elog.c b/arch/powerpc/platforms/powernv/opal-elog.c index 554fdd7f88b8..5db1e733143b 100644 --- a/arch/powerpc/platforms/powernv/opal-elog.c +++ b/arch/powerpc/platforms/powernv/opal-elog.c @@ -146,7 +146,7 @@ static struct attribute *elog_default_attrs[] = { }; ATTRIBUTE_GROUPS(elog_default); -static struct kobj_type elog_ktype = { +static const struct kobj_type elog_ktype = { .sysfs_ops = &elog_sysfs_ops, .release = &elog_release, .default_groups = elog_default_groups,