Re: [PATCH] ARC: extable: Enable sorting at build time

[David Daney <ddaney@caviumnetworks.com>]

On 11/14/2013 10:45 PM, Vineet Gupta wrote:
> Avoids wasting cycles at boot specially on slower simulators
>
> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
> Cc: David Daney <david.daney@cavium.com>
> Cc: Michal Marek <mmarek@suse.cz>
> Cc: Francois Bedard <fbedard@synopsys.com>
> Cc: linux-kernel@vger.kernel.org

I haven't tested it, but this looks sane.

Acked-by: David Daney <david.daney@cavium.com>

I have no opinion about the path this should take towards Linus' tree.

> ---
>   arch/arc/Kconfig      | 1 +
>   scripts/sortextable.c | 5 +++++
>   2 files changed, 6 insertions(+)
>
> diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
> index 91dbb2757afd..080580216301 100644
> --- a/arch/arc/Kconfig
> +++ b/arch/arc/Kconfig
> @@ -8,6 +8,7 @@
>
>   config ARC
>   	def_bool y
> +	select BUILDTIME_EXTABLE_SORT
>   	select CLONE_BACKWARDS
>   	# ARC Busybox based initramfs absolutely relies on DEVTMPFS for /dev
>   	select DEVTMPFS if !INITRAMFS_SOURCE=""
> diff --git a/scripts/sortextable.c b/scripts/sortextable.c
> index 7c2310c5b996..e3fb1c36ed0f 100644
> --- a/scripts/sortextable.c
> +++ b/scripts/sortextable.c
> @@ -31,6 +31,10 @@
>   #include <tools/be_byteshift.h>
>   #include <tools/le_byteshift.h>
>
> +#ifndef EM_ARCOMPACT
> +#define EM_ARCOMPACT	93
> +#endif
> +
>   #ifndef EM_AARCH64
>   #define EM_AARCH64	183
>   #endif
> @@ -244,6 +248,7 @@ do_file(char const *const fname)
>   	case EM_S390:
>   		custom_sort = sort_relative_table;
>   		break;
> +	case EM_ARCOMPACT:
>   	case EM_ARM:
>   	case EM_AARCH64:
>   	case EM_MIPS:
>