Kernel/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2025-01-06 13:16:22 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

arm64: Constify struct kobj_type

Browse Source 
'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 arm defconfig:
Before:
======
   text	   data	    bss	    dec	    hex	filename
   5602	    548	    352	   6502	   1966	arch/arm64/kernel/cpuinfo.o

After:
======
   text    data     bss     dec     hex filename
   5650     500     352    6502    1966 arch/arm64/kernel/cpuinfo.o

Signed-off-by: Huang Xiaojia <huangxiaojia2@huawei.com>
Link: https://lore.kernel.org/r/20240826151250.3500302-1-huangxiaojia2@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Huang Xiaojia 2024-08-26 23:12:50 +08:00 committed by Will Deacon
parent fdfa588124
commit 684fbd42d3
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm64/kernel/cpuinfo.c
View File

@ -280,7 +280,7 @@ const struct seq_operations cpuinfo_op = {
};
static struct kobj_type cpuregs_kobj_type = {
static const struct kobj_type cpuregs_kobj_type = {
.sysfs_ops = &kobj_sysfs_ops,
};