From 4d4c41d673f9c3ebdb73c7d98c22df64d4310157 Mon Sep 17 00:00:00 2001 From: nbd Date: Sat, 16 Apr 2011 18:31:21 +0000 Subject: kernel: reorganize 2.6.37 patches git-svn-id: svn://svn.openwrt.org/openwrt/trunk@26692 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../patches-2.6.37/201-extra_optimization.patch | 24 ++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 target/linux/generic/patches-2.6.37/201-extra_optimization.patch (limited to 'target/linux/generic/patches-2.6.37/201-extra_optimization.patch') diff --git a/target/linux/generic/patches-2.6.37/201-extra_optimization.patch b/target/linux/generic/patches-2.6.37/201-extra_optimization.patch new file mode 100644 index 0000000000..a7811d78fc --- /dev/null +++ b/target/linux/generic/patches-2.6.37/201-extra_optimization.patch @@ -0,0 +1,24 @@ +--- a/Makefile ++++ b/Makefile +@@ -538,9 +538,9 @@ endif # $(dot-config) + all: vmlinux + + ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE +-KBUILD_CFLAGS += -Os ++KBUILD_CFLAGS += -Os -fno-caller-saves + else +-KBUILD_CFLAGS += -O2 ++KBUILD_CFLAGS += -O2 -fno-reorder-blocks -fno-tree-ch -fno-caller-saves + endif + + include $(srctree)/arch/$(SRCARCH)/Makefile +@@ -595,6 +595,9 @@ endif + NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) + CHECKFLAGS += $(NOSTDINC_FLAGS) + ++# improve gcc optimization ++CFLAGS += $(call cc-option,-funit-at-a-time,) ++ + # warn about C99 declaration after statement + KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) + -- cgit v1.2.3