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authorJonas Gorski <jogo@openwrt.org>2013-05-19 18:36:15 +0000
committerJonas Gorski <jogo@openwrt.org>2013-05-19 18:36:15 +0000
commitc0435a971e9c21ebf694b221717e7a73f12662ec (patch)
tree6daa92bd257c9376af180e7bb3649dca91589812 /target/linux/generic/patches-3.10/201-extra_optimization.patch
parent87203c404996884334a9584fce0d8a251bf9fb43 (diff)
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kernel: generic: add 3.10-rc1 support
Signed-off-by: Jonas Gorski <jogo@openwrt.org> SVN-Revision: 36663
Diffstat (limited to 'target/linux/generic/patches-3.10/201-extra_optimization.patch')
-rw-r--r--target/linux/generic/patches-3.10/201-extra_optimization.patch24
1 files changed, 24 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.10/201-extra_optimization.patch b/target/linux/generic/patches-3.10/201-extra_optimization.patch
new file mode 100644
index 0000000..051ede1
--- /dev/null
+++ b/target/linux/generic/patches-3.10/201-extra_optimization.patch
@@ -0,0 +1,24 @@
+--- a/Makefile
++++ b/Makefile
+@@ -571,9 +571,9 @@ endif # $(dot-config)
+ all: vmlinux
+
+ ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
+-KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,)
++KBUILD_CFLAGS += -Os -fno-caller-saves $(call cc-disable-warning,maybe-uninitialized,)
+ else
+-KBUILD_CFLAGS += -O2
++KBUILD_CFLAGS += -O2 -fno-reorder-blocks -fno-tree-ch -fno-caller-saves
+ endif
+
+ include $(srctree)/arch/$(SRCARCH)/Makefile
+@@ -647,6 +647,9 @@ 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,)
+