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uselib: default depending if libc5 was used

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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 slightly 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

Signed-off-by: Riku Voipio <[email protected]>
Reviewed-by: Josh Triplett <[email protected]>
Acked-by: Geert Uytterhoeven <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Riku Voipio 2016-01-15 16:58:13 -08:00 • committed by Linus Torvalds
commit b2113a417c
1 changed files with 1 additions and 1 deletions
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2
init/Kconfig
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@ -285,7 +285,7 @@ config FHANDLE
config USELIB
bool "uselib syscall"
default y
def_bool ALPHA || M68K || SPARC || X86_32 || IA32_EMULATION
help
This option enables the uselib syscall, a system call used in the
dynamic linker from libc5 and earlier. glibc does not use this