Change the default purgatory sha256 code optimization from -O0 to -O2, and add a new arch specific makefile variable $(ARCH)_PURGATORY_SHA256_CFLAGS which can over ride this default. Set ia64_PURGATORY_SHA256_CFLAGS to -O0 to retain the previous optimization level for ia64. The purgatory sha256 code needs the be built with -O0 for the ia64 architecture. Currently this code is built with -O0 for all architectures, which slows down the calculations for architectures which could otherwise use -O2. On arm64, it takes around 20 second to verify SHA in purgatory when vmlinuz image is around 13MB and initramfs is around 30M with -O2 enabled. Otherwise, it takes more than 2 minutes. Cc: Pratyush Anand <panand at redhat.com> Signed-off-by: Geoff Levand <geoff at infradead.org> --- purgatory/Makefile | 4 +--- purgatory/arch/ia64/Makefile | 4 ++++ 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/purgatory/Makefile b/purgatory/Makefile index ca0443c..328904e 100644 --- a/purgatory/Makefile +++ b/purgatory/Makefile @@ -38,9 +38,7 @@ clean += $(PURGATORY_OBJS) $(PURGATORY_DEPS) $(PURGATORY) -include $(PURGATORY_DEPS) -# sha256.c needs to be compiled without optimization, else -# purgatory fails to execute on ia64. -purgatory/sha256.o: CFLAGS += -O0 +purgatory/sha256.o: CFLAGS += -O2 $($(ARCH)_PURGATORY_SHA256_CFLAGS) purgatory/sha256.o: $(srcdir)/util_lib/sha256.c mkdir -p $(@D) diff --git a/purgatory/arch/ia64/Makefile b/purgatory/arch/ia64/Makefile index 32c3d97..4a2564c 100644 --- a/purgatory/arch/ia64/Makefile +++ b/purgatory/arch/ia64/Makefile @@ -8,6 +8,10 @@ ia64_PURGATORY_SRCS += purgatory/arch/ia64/vga.c ia64_PURGATORY_EXTRA_CFLAGS = -ffixed-r28 +# sha256.c needs to be compiled without optimization, else +# purgatory fails to execute on ia64. +ia64_PURGATORY_SHA256_CFLAGS = -O0 + dist += purgatory/arch/ia64/Makefile $(ia64_PURGATORY_SRCS) \ purgatory/arch/ia64/io.h purgatory/arch/ia64/purgatory-ia64.h -- 2.9.3
