From 684fbd42d323c9c4a69a905451ea270678e36d1e Mon Sep 17 00:00:00 2001 From: Huang Xiaojia Date: Mon, 26 Aug 2024 23:12:50 +0800 Subject: [PATCH] arm64: 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 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 Link: https://lore.kernel.org/r/20240826151250.3500302-1-huangxiaojia2@huawei.com Signed-off-by: Will Deacon --- arch/arm64/kernel/cpuinfo.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/kernel/cpuinfo.c b/arch/arm64/kernel/cpuinfo.c index 09eeaa24d4560..369dd72a8b229 100644 --- a/arch/arm64/kernel/cpuinfo.c +++ b/arch/arm64/kernel/cpuinfo.c @@ -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, }; -- 2.39.5