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kbuild: reword help of LD_DEAD_CODE_DATA_ELIMINATION 

Since commit 5d20ee3192 ("kbuild: Allow LD_DEAD_CODE_DATA_ELIMINATION
to be selectable if enabled"), HAVE_LD_DEAD_CODE_DATA_ELIMINATION is
supposed to be selected by architectures that are capable of this
functionality.  LD_DEAD_CODE_DATA_ELIMINATION is now users' selection.
Update the help message.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada 2018-06-24 01:41:51 +09:00
parent ecd53ac2f2
commit 8b9d271240
1 changed files with 3 additions and 4 deletions
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7
init/Kconfig
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@ -1051,10 +1051,9 @@ config LD_DEAD_CODE_DATA_ELIMINATION
depends on HAVE_LD_DEAD_CODE_DATA_ELIMINATION
depends on EXPERT
help
Select this if the architecture wants to do dead code and
data elimination with the linker by compiling with
-ffunction-sections -fdata-sections, and linking with
--gc-sections.
Enable this if you want to do dead code and data elimination with
the linker by compiling with -ffunction-sections -fdata-sections,
and linking with --gc-sections.
This can reduce on disk and in-memory size of the kernel
code and static data, particularly for small configs and