summaryrefslogtreecommitdiffstats
path: root/target/linux/generic/patches-3.6/201-extra_optimization.patch
diff options
context:
space:
mode:
authorkaloz <kaloz@3c298f89-4303-0410-b956-a3cf2f4a3e73>2012-10-23 12:21:34 +0000
committerkaloz <kaloz@3c298f89-4303-0410-b956-a3cf2f4a3e73>2012-10-23 12:21:34 +0000
commit1c3d05cf739b54cf71010bb4d3e0ec70d7811a46 (patch)
tree413eb23081ae9b34b54a6ee479e5a2bf0085877d /target/linux/generic/patches-3.6/201-extra_optimization.patch
parentc373dbfcfb08c0662558cce38da2e05c7682714b (diff)
[generic]: linux 3.6 support (work in progress)
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33897 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/generic/patches-3.6/201-extra_optimization.patch')
-rw-r--r--target/linux/generic/patches-3.6/201-extra_optimization.patch24
1 files changed, 24 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.6/201-extra_optimization.patch b/target/linux/generic/patches-3.6/201-extra_optimization.patch
new file mode 100644
index 000000000..6fe8b0938
--- /dev/null
+++ b/target/linux/generic/patches-3.6/201-extra_optimization.patch
@@ -0,0 +1,24 @@
+--- a/Makefile
++++ b/Makefile
+@@ -559,9 +559,9 @@ 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
+@@ -620,6 +620,9 @@ 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,)
+