On 10/15/2014 08:38 AM, Jarkko Sakkinen wrote:
> Trampoline code is only needed for SMP and in x86-64 for wakeup
> code. Make it conditional in order to minimize the kernel size.
>
> Signed-off-by: Jarkko Sakkinen <[email protected]>
> ---
> arch/x86/realmode/rm/Makefile | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/arch/x86/realmode/rm/Makefile b/arch/x86/realmode/rm/Makefile
> index 7c0d7be..82b7312 100644
> --- a/arch/x86/realmode/rm/Makefile
> +++ b/arch/x86/realmode/rm/Makefile
> @@ -20,7 +20,11 @@ wakeup-objs += video-vesa.o
> wakeup-objs += video-bios.o
>
> realmode-y += header.o
> +ifdef CONFIG_X86_64
> realmode-y += trampoline_$(BITS).o
> +else
> +realmode-$(CONFIG_SMP) += trampoline_$(BITS).o
> +endif
> realmode-y += stack.o
> realmode-y += reboot.o
> realmode-$(CONFIG_ACPI_SLEEP) += $(wakeup-objs)
>
It is usually preferred to make this a hidden config option (e.g.
CONFIG_X86_TRAMPOLINE) rather than use ifdef, especially since your
ifdef has another conditional inside it.
-hpa
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