[PATCH 4/4] powerpc: Allow LD_DEAD_CODE_DATA_ELIMINATION to be selected

[Nicholas Piggin]

On Mon, 7 May 2018 09:46:43 +0900
Masahiro Yamada <yamada.masahiro at socionext.com> wrote:

> Hi Nicholas,
> 
> 2018-04-20 19:41 GMT+09:00 Nicholas Piggin <npiggin at gmail.com>:
> > On Fri, 20 Apr 2018 12:00:49 +0200
> > Mathieu Malaterre <malat at debian.org> wrote:
> >  
> >> On Fri, Apr 20, 2018 at 9:34 AM, Nicholas Piggin <npiggin at gmail.com> wrote:  
> >> > This requires further changes to linker script to KEEP some tables
> >> > and wildcard compiler generated sections into the right place. This
> >> > includes pp32 modifications from Christophe Leroy.
> >> >
> >> > When compiling powernv_defconfig with this option:
> >> >
> >> > text       data      bss       dec        filename
> >> > 11827621   4810490   1341080   17979191   vmlinux
> >> > 11752437   4598858   1338776   17690071   vmlinux.dcde
> >> >
> >> > Resulting kernel is almost 400kB smaller (and still boots).
> >> >
> >> > [ppc32 numbers here]  
> >>
> >> ^^^
> >>
> >> Do you want somebody else to provide those numbers ?  
> >
> > If you have a booting kernel, yes some more numbers would be good.
> >
> > Thanks,
> > Nick  
> 
> 
> 
> I applied this series because I want it to be more tested in linux-next.

Thank you.


> Some requests:
> 
>  - Could you provide information to replace '[ppc32 numbers here]'?
>    (or just remove it)

Yes there were some numbers reported, I can give you an updated
changelog.

>  - V2 is welcome if you have code improvement.
>    (I thought so from your comments)

I'll see where it ended up and send you updated patches if necessary.

Thanks,
Nick