diff options
| author | Huang Xiaojia <huangxiaojia2@huawei.com> | 2024-08-26 23:09:56 +0800 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2024-09-05 22:25:36 +1000 |
| commit | 7492ca369e98a45b55592456dc1b24d58b3392f5 (patch) | |
| tree | aaffcc4d2f26748b1713719a6b994f08824d069d /arch/powerpc | |
| parent | 7509c23770054fdaffd966926462248d44a323c1 (diff) | |
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 <huangxiaojia2@huawei.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240826150957.3500237-2-huangxiaojia2@huawei.com
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/platforms/powernv/opal-dump.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/powernv/opal-elog.c | 2 |
2 files changed, 2 insertions, 2 deletions
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, |