* Masahiro Yamada <yamada.masah...@socionext.com> wrote:
> GCC 4.6 manual says:
>
> -funit-at-a-time
> This option is left for compatibility reasons. -funit-at-a-time has
> no effect, while -fno-unit-at-a-time implies -fno-toplevel-reorder
> and -fno-section-anchors.
> Enabled by default.
>
> Signed-off-by: Masahiro Yamada <yamada.masah...@socionext.com>
> ---
>
> arch/powerpc/Makefile | 4 ----
> arch/x86/Makefile | 4 ----
> arch/x86/Makefile.um | 5 -----
> 3 files changed, 13 deletions(-)
>
> diff --git a/arch/x86/Makefile b/arch/x86/Makefile
> index 88398fd..3508049 100644
> --- a/arch/x86/Makefile
> +++ b/arch/x86/Makefile
> @@ -130,10 +130,6 @@ else
>
> KBUILD_CFLAGS += -mno-red-zone
> KBUILD_CFLAGS += -mcmodel=kernel
> -
> - # -funit-at-a-time shrinks the kernel .text considerably
> - # unfortunately it makes reading oopses harder.
> - KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
> endif
>
> ifdef CONFIG_X86_X32
> diff --git a/arch/x86/Makefile.um b/arch/x86/Makefile.um
> index 577976b..1db7913 100644
> --- a/arch/x86/Makefile.um
> +++ b/arch/x86/Makefile.um
> @@ -26,9 +26,6 @@ cflags-y += $(call cc-option,-mpreferred-stack-boundary=2)
> # an unresolved reference.
> cflags-y += -ffreestanding
>
> -# gcc 4.3.0 needs -funit-at-a-time for extern inline functions.
> -KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
> -
> KBUILD_CFLAGS += $(cflags-y)
>
> else
> @@ -50,6 +47,4 @@ ELF_FORMAT := elf64-x86-64
> LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib64
> LINK-y += -m64
>
> -# Do unit-at-a-time unconditionally on x86_64, following the host
> -KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
> endif
Acked-by: Ingo Molnar <mi...@kernel.org>
Thanks,
Ingo
