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authoracoul <acoul@3c298f89-4303-0410-b956-a3cf2f4a3e73>2010-11-03 16:13:33 +0000
committeracoul <acoul@3c298f89-4303-0410-b956-a3cf2f4a3e73>2010-11-03 16:13:33 +0000
commit8be1093039aa9942ec456dff0255c2b0c41f2cce (patch)
treee173de5498db08719c81621c36a6bbbdb0c67eb0 /target/linux/generic/patches-2.6.37/012-extra_optimization.patch
parentc588a703feb2241e803da3db71f685b57b408102 (diff)
target/linux: add preliminary 2.6.37 kernel support
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@23828 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/generic/patches-2.6.37/012-extra_optimization.patch')
-rw-r--r--target/linux/generic/patches-2.6.37/012-extra_optimization.patch21
1 files changed, 21 insertions, 0 deletions
diff --git a/target/linux/generic/patches-2.6.37/012-extra_optimization.patch b/target/linux/generic/patches-2.6.37/012-extra_optimization.patch
new file mode 100644
index 000000000..d7066486f
--- /dev/null
+++ b/target/linux/generic/patches-2.6.37/012-extra_optimization.patch
@@ -0,0 +1,21 @@
+--- a/Makefile
++++ b/Makefile
+@@ -540,7 +540,7 @@ 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
+@@ -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,)
+