On Fri, Nov 27, 2015 at 01:14:20PM +0200, Riku Voipio wrote:
> uselib hasn't been used since libc5; glibc does not use it.
> Deprecate uselib a bit more, by making the default y only
> if libc5 was widely used on the plaform.
>
> This makes arm64 kernel built with defconfig slighly smaller
>
> bloat-o-meter:
> add/remove: 0/3 grow/shrink: 0/2 up/down: 0/-1390 (-1390)
> function old new delta
> kernel_config_data 18164 18162 -2
> uselib_flags 20 - -20
> padzero 216 192 -24
> sys_uselib 380 - -380
> load_elf_library 964 - -964
One question below.
> v2: Disable on X86_64 if no 32bit support
> init/Kconfig | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/init/Kconfig b/init/Kconfig
> index c24b6f7..a4bc657 100644
> --- a/init/Kconfig
> +++ b/init/Kconfig
> @@ -285,7 +285,7 @@ config FHANDLE
>
> config USELIB
> bool "uselib syscall"
> - default y
> + def_bool ALPHA || M68K || SPARC || X86_32 || (X86_64 && IA32_EMULATION)
IA32_EMULATION depends on X86_64, so doesn't that reduce to:
def_bool ALPHA || M68K || SPARC || X86_32 || IA32_EMULATION
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