tree 12339f936fba7c5c2c152ce3dcd0dd427cfaeee4
parent da83616bcd3fa84233f6e37e2cf8cbfa979c6927
author Masahiro Yamada <masahiroy@kernel.org> 1614320748 +0900
committer Masahiro Yamada <masahiroy@kernel.org> 1614493161 +0900

kbuild: fix UNUSED_KSYMS_WHITELIST for Clang LTO

Commit fbe078d397b4 ("kbuild: lto: add a default list of used symbols")
does not work as expected if the .config file has already specified
CONFIG_UNUSED_KSYMS_WHITELIST="my/own/white/list" before enabling
CONFIG_LTO_CLANG.

So, the user-supplied whitelist and LTO-specific white list must be
independent of each other.

I refactored the shell script so CONFIG_MODVERSIONS and CONFIG_CLANG_LTO
handle whitelists in the same way.

Fixes: fbe078d397b4 ("kbuild: lto: add a default list of used symbols")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>