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 <riku.voi...@linaro.org>
Cc: Josh Triplett <j...@joshtriplett.org>
---
v3: only depend on IA32_EMULATION to catch X86_64 with 32bit case
v2: Disable uselib 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..5a7f375 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 || 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
--
2.6.2
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