X-Git-Url: http://git.ozo.com/?a=blobdiff_plain;f=target%2Flinux%2Fgeneric-2.6%2Fpatches-2.6.31%2F012-extra_optimization.patch;fp=target%2Flinux%2Fgeneric-2.6%2Fpatches-2.6.31%2F012-extra_optimization.patch;h=e0ba51598e4a24569ac0be442bd21c34bfb70d7f;hb=ca1329b26cbf56d82efc682347f07f765d7f2dd6;hp=0000000000000000000000000000000000000000;hpb=38e85dcf7a457fd3b14f2bc4f055130955ce862d;p=openwrt-10.03%2F.git

diff --git a/target/linux/generic-2.6/patches-2.6.31/012-extra_optimization.patch b/target/linux/generic-2.6/patches-2.6.31/012-extra_optimization.patch
new file mode 100644
index 000000000..e0ba51598
--- /dev/null
+++ b/target/linux/generic-2.6/patches-2.6.31/012-extra_optimization.patch
@@ -0,0 +1,21 @@
+--- 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)
+ 
++# 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,)
+