lkml.org 
[lkml]   [2008]   [Apr]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH] Configure out DMI scanning code v2 (Linux Tiny)
Date
On Tuesday 01 April 2008 14:00:36 Andrew Morton wrote:
> text data bss dec hex filename
> 1614279 210524 159992 1984795 1e491b vmlinux
>
> but when I remove the ifdefs around the tables and rely on the compiler
> removing the code and data I get
>
> text data bss dec hex filename
> 1614447 210972 159992 1985411 1e4b83 vmlinux
>
> An additional 616 bytes of useless stuff.
>
> Ingo, I think there was some trick to making this work right. Do you
> recall?

Does bloat-o-meter say what the additional 616 bytes _is_?

scripts/bloat-o-meter vmlinux.old vmlinux.new

P.S. What busybox did:

ifneq ($(strip $(CONFIG_DEBUG)),y)
OPTIMIZATION+=$(call check_cc,
$(CC),-ffunction-sections -fdata-sections,)
CHECKED_LDFLAGS += $(call check_ld,$(LD),--gc-sections,)
endif

Tells gcc to put each function and each global into its own ELF section, and
then told the linker to garbage collect unused sections...

Rob
--
"One of my most productive days was throwing away 1000 lines of code."
- Ken Thompson.


\
 
 \ /
  Last update: 2008-04-01 22:13    [W:0.049 / U:0.100 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site