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Subject[PATCH 3/3] s390:add missing CONFIG_STRICT_KERNEL_RWX for mark_rodata_ro
Date
mark_rodata_ro is only called by the function mark_readonly
when CONFIG_STRICT_KERNEL_RWX=y

if CONFIG_STRICT_KERNEL_RWX is not set
a compile warning may be triggered: unused function

Signed-off-by: nixiaoming <nixiaoming@huawei.com>
---
arch/s390/mm/init.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index 3fa3e53..a96fc3f 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -116,6 +116,7 @@ void __init paging_init(void)
free_area_init_nodes(max_zone_pfns);
}

+#ifdef CONFIG_STRICT_KERNEL_RWX
void mark_rodata_ro(void)
{
unsigned long size = __end_ro_after_init - __start_ro_after_init;
@@ -123,6 +124,7 @@ void mark_rodata_ro(void)
set_memory_ro((unsigned long)__start_ro_after_init, size >> PAGE_SHIFT);
pr_info("Write protected read-only-after-init data: %luk\n", size >> 10);
}
+#endif

void __init mem_init(void)
{
--
2.10.1
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