From: Arvind Sankar Date: Mon, 18 May 2020 19:06:57 +0000 (-0400) Subject: efi/libstub: Optimize for size instead of speed X-Git-Tag: v5.15~3781^2~1^2~24 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=bbf8e8b0fe0401e1952c77088692fd273a9635a1;p=platform%2Fkernel%2Flinux-starfive.git efi/libstub: Optimize for size instead of speed Reclaim the bloat from the addition of printf by optimizing the stub for size. With gcc 9, the text size of the stub is: ARCH before +printf -Os arm 35197 37889 34638 arm64 34883 38159 34479 i386 18571 21657 17025 x86_64 25677 29328 22144 Signed-off-by: Arvind Sankar Link: https://lore.kernel.org/r/20200518190716.751506-6-nivedita@alum.mit.edu Signed-off-by: Ard Biesheuvel --- diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile index fb34c9d..034d716 100644 --- a/drivers/firmware/efi/libstub/Makefile +++ b/drivers/firmware/efi/libstub/Makefile @@ -7,7 +7,7 @@ # cflags-$(CONFIG_X86_32) := -march=i386 cflags-$(CONFIG_X86_64) := -mcmodel=small -cflags-$(CONFIG_X86) += -m$(BITS) -D__KERNEL__ -O2 \ +cflags-$(CONFIG_X86) += -m$(BITS) -D__KERNEL__ \ -fPIC -fno-strict-aliasing -mno-red-zone \ -mno-mmx -mno-sse -fshort-wchar \ -Wno-pointer-sign \ @@ -25,7 +25,7 @@ cflags-$(CONFIG_ARM) := $(subst $(CC_FLAGS_FTRACE),,$(KBUILD_CFLAGS)) \ cflags-$(CONFIG_EFI_GENERIC_STUB) += -I$(srctree)/scripts/dtc/libfdt -KBUILD_CFLAGS := $(cflags-y) -DDISABLE_BRANCH_PROFILING \ +KBUILD_CFLAGS := $(cflags-y) -Os -DDISABLE_BRANCH_PROFILING \ -include $(srctree)/drivers/firmware/efi/libstub/hidden.h \ -D__NO_FORTIFY \ $(call cc-option,-ffreestanding) \