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| author | Felix Fietkau <nbd@openwrt.org> | 2009-09-22 18:00:35 +0000 |
|---|---|---|
| committer | Felix Fietkau <nbd@openwrt.org> | 2009-09-22 18:00:35 +0000 |
| commit | 6f4e700acd737903c12fee0f0790f84c39a28a19 (patch) | |
| tree | b1b28158e4f1c35a90d975f3362cd23d4cd360cd | |
| parent | 0754070949d428bf409e38b084431a9910d7b72a (diff) | |
| download | master-31e0f0ae-6f4e700acd737903c12fee0f0790f84c39a28a19.tar.gz master-31e0f0ae-6f4e700acd737903c12fee0f0790f84c39a28a19.tar.bz2 master-31e0f0ae-6f4e700acd737903c12fee0f0790f84c39a28a19.zip | |
when using -O2 instead of -Os, get rid of the two optimizations that are causing most of the extra bloat. brings kernel size close to the -Os size again
SVN-Revision: 17679
3 files changed, 27 insertions, 0 deletions
diff --git a/target/linux/generic-2.6/patches-2.6.28/004-extra_optimization.patch b/target/linux/generic-2.6/patches-2.6.28/004-extra_optimization.patch index d6866899c3..8827ed0c3d 100644 --- a/target/linux/generic-2.6/patches-2.6.28/004-extra_optimization.patch +++ b/target/linux/generic-2.6/patches-2.6.28/004-extra_optimization.patch @@ -1,5 +1,14 @@ --- a/Makefile +++ b/Makefile +@@ -512,7 +512,7 @@ all: vmlinux + ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE + KBUILD_CFLAGS += -Os + else +-KBUILD_CFLAGS += -O2 ++KBUILD_CFLAGS += -O2 -fno-reorder-blocks -fno-tree-ch + endif + + include $(srctree)/arch/$(SRCARCH)/Makefile @@ -549,6 +549,9 @@ endif NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) CHECKFLAGS += $(NOSTDINC_FLAGS) diff --git a/target/linux/generic-2.6/patches-2.6.30/004-extra_optimization.patch b/target/linux/generic-2.6/patches-2.6.30/004-extra_optimization.patch index 018e673e20..0b5174cbbd 100644 --- a/target/linux/generic-2.6/patches-2.6.30/004-extra_optimization.patch +++ b/target/linux/generic-2.6/patches-2.6.30/004-extra_optimization.patch @@ -1,5 +1,14 @@ --- a/Makefile +++ b/Makefile +@@ -529,7 +529,7 @@ all: vmlinux + ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE + KBUILD_CFLAGS += -Os + else +-KBUILD_CFLAGS += -O2 ++KBUILD_CFLAGS += -O2 -fno-reorder-blocks -fno-tree-ch + endif + + include $(srctree)/arch/$(SRCARCH)/Makefile @@ -567,6 +567,9 @@ endif NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) CHECKFLAGS += $(NOSTDINC_FLAGS) diff --git a/target/linux/generic-2.6/patches-2.6.31/004-extra_optimization.patch b/target/linux/generic-2.6/patches-2.6.31/004-extra_optimization.patch index 333acb612b..e0ba51598e 100644 --- a/target/linux/generic-2.6/patches-2.6.31/004-extra_optimization.patch +++ b/target/linux/generic-2.6/patches-2.6.31/004-extra_optimization.patch @@ -1,5 +1,14 @@ --- a/Makefile +++ b/Makefile +@@ -521,7 +521,7 @@ all: vmlinux + ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE + KBUILD_CFLAGS += -Os + else +-KBUILD_CFLAGS += -O2 ++KBUILD_CFLAGS += -O2 -fno-reorder-blocks -fno-tree-ch + endif + + include $(srctree)/arch/$(SRCARCH)/Makefile @@ -559,6 +559,9 @@ endif NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) CHECKFLAGS += $(NOSTDINC_FLAGS) |