From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Message-ID: <1446842218.24647.42.camel@infradead.org> Subject: [PATCH] purgatory: Change default sha256 optimization to -O2 From: Geoff Levand Date: Fri, 06 Nov 2015 12:36:58 -0800 Mime-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: Simon Horman Cc: Scott Wood , kexec@lists.infradead.org, Petitboot@lists.ozlabs.org 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. Signed-off-by: Geoff Levand --- Tested on arm64. Seems to work OK. 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 -- 2.5.0 _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec