On powerpc, RODATA_TEST fails with message the following messages: [ 6.199505] Freeing unused kernel memory: 528K [ 6.203935] rodata_test: test data was not read only
This is because GCC allocates it to .data section: c0695034 g O .data 00000004 rodata_test_data Since commit 056b9d8a76924 ("mm: remove rodata_test_data export, add pr_fmt"), rodata_test_data is used only inside rodata_test.c By declaring it static, it gets properly allocated into .rodata section instead of .data: c04df710 l O .rodata 00000004 rodata_test_data Signed-off-by: Christophe Leroy <christophe.le...@c-s.fr> --- mm/rodata_test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/rodata_test.c b/mm/rodata_test.c index 6bb4deb12e78..d908c8769b48 100644 --- a/mm/rodata_test.c +++ b/mm/rodata_test.c @@ -14,7 +14,7 @@ #include <linux/uaccess.h> #include <asm/sections.h> -const int rodata_test_data = 0xC3; +static const int rodata_test_data = 0xC3; void rodata_test(void) { -- 2.13.3