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Commit dbacb0ef authored by Nicolas Pitre's avatar Nicolas Pitre
Browse files

kconfig option for TRIM_UNUSED_KSYMS 



The config option to enable it all.

Signed-off-by: default avatarNicolas Pitre <nico@linaro.org>
Acked-by: default avatarRusty Russell <rusty@rustcorp.com.au>
parent dd92478a

init/Kconfig

+16 −0
Original line number Original line Diff line number Diff line
@@ -2012,6 +2012,22 @@ config MODULE_COMPRESS_XZ 




endchoice

endchoice





config TRIM_UNUSED_KSYMS

	bool "Trim unused exported kernel symbols"

	depends on MODULES && !UNUSED_SYMBOLS

	help

	  The kernel and some modules make many symbols available for

	  other modules to use via EXPORT_SYMBOL() and variants. Depending

	  on the set of modules being selected in your kernel configuration,

	  many of those exported symbols might never be used.



	  This option allows for unused exported symbols to be dropped from

	  the build. In turn, this provides the compiler more opportunities

	  (especially when using LTO) for optimizing the code and reducing

	  binary size.  This might have some security advantages as well.



	  If unsure say N.



endif # MODULES

endif # MODULES





config MODULES_TREE_LOOKUP

config MODULES_TREE_LOOKUP