4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Behan Webster <behanw@xxxxxxxxxxxxxxxxxx> commit 6748cb3c299de1ffbe56733647b01dbcc398c419 upstream. This generates smaller resulting object code when compiled with clang. Signed-off-by: Behan Webster <behanw@xxxxxxxxxxxxxxxxxx> Signed-off-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx> Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx> Signed-off-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/Makefile +++ b/Makefile @@ -644,7 +644,8 @@ KBUILD_CFLAGS += $(call cc-option,-fdata endif ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE -KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,) +KBUILD_CFLAGS += $(call cc-option,-Oz,-Os) +KBUILD_CFLAGS += $(call cc-disable-warning,maybe-uninitialized,) else ifdef CONFIG_PROFILE_ALL_BRANCHES KBUILD_CFLAGS += -O2 $(call cc-disable-warning,maybe-uninitialized,)
