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SubjectRe: [PATCH] nds32: linker script: GCOV kernel may refers data in __exit
On Tue,  4 Sep 2018 15:54:19 +0800
Greentime Hu <green.hu@gmail.com> wrote:

> This patch is used to fix nds32 allmodconfig/allyesconfig build error
> because GCOV kernel embeds counters in the kernel for each line
> and a part of that embed in __exit text. So we need to keep the
> EXIT_TEXT and EXIT_DATA if CONFIG_GCOV_KERNEL=y.

Yes, that is exactly what I did for arm.

Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>

Thanks!

>
> Link: https://lkml.org/lkml/2018/9/1/125
> Signed-off-by: Greentime Hu <greentime@andestech.com>
> ---
> arch/nds32/kernel/vmlinux.lds.S | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/arch/nds32/kernel/vmlinux.lds.S b/arch/nds32/kernel/vmlinux.lds.S
> index 288313b886ef..9e90f30a181d 100644
> --- a/arch/nds32/kernel/vmlinux.lds.S
> +++ b/arch/nds32/kernel/vmlinux.lds.S
> @@ -13,14 +13,26 @@ OUTPUT_ARCH(nds32)
> ENTRY(_stext_lma)
> jiffies = jiffies_64;
>
> +#if defined(CONFIG_GCOV_KERNEL)
> +#define NDS32_EXIT_KEEP(x) x
> +#else
> +#define NDS32_EXIT_KEEP(x)
> +#endif
> +
> SECTIONS
> {
> _stext_lma = TEXTADDR - LOAD_OFFSET;
> . = TEXTADDR;
> __init_begin = .;
> HEAD_TEXT_SECTION
> + .exit.text : {
> + NDS32_EXIT_KEEP(EXIT_TEXT)
> + }
> INIT_TEXT_SECTION(PAGE_SIZE)
> INIT_DATA_SECTION(16)
> + .exit.data : {
> + NDS32_EXIT_KEEP(EXIT_DATA)
> + }
> PERCPU_SECTION(L1_CACHE_BYTES)
> __init_end = .;
>
> --
> 2.18.0
>


--
Masami Hiramatsu <mhiramat@kernel.org>

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