kernel: use -fno-caller-saves
authorFelix Fietkau <nbd@openwrt.org>
Sat, 26 Mar 2011 01:07:16 +0000 (01:07 +0000)
committerFelix Fietkau <nbd@openwrt.org>
Sat, 26 Mar 2011 01:07:16 +0000 (01:07 +0000)
SVN-Revision: 26301

target/linux/generic/patches-2.6.37/012-extra_optimization.patch
target/linux/generic/patches-2.6.38/012-extra_optimization.patch

index d706648..4ffa26e 100644 (file)
@@ -1,15 +1,18 @@
 --- a/Makefile
 +++ b/Makefile
-@@ -540,7 +540,7 @@ all: vmlinux
+@@ -538,9 +538,9 @@
+ all: vmlinux
  ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
- KBUILD_CFLAGS += -Os
+-KBUILD_CFLAGS += -Os
++KBUILD_CFLAGS += -Os -fno-caller-saves
  else
 -KBUILD_CFLAGS += -O2
-+KBUILD_CFLAGS += -O2 -fno-reorder-blocks -fno-tree-ch
++KBUILD_CFLAGS += -O2 -fno-reorder-blocks -fno-tree-ch -fno-caller-saves
  endif
  
  include $(srctree)/arch/$(SRCARCH)/Makefile
-@@ -595,6 +595,9 @@ endif
+@@ -595,6 +595,9 @@
  NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
  CHECKFLAGS     += $(NOSTDINC_FLAGS)
  
index 4984fad..d173e4c 100644 (file)
@@ -1,11 +1,14 @@
 --- a/Makefile
 +++ b/Makefile
-@@ -541,7 +541,7 @@ all: vmlinux
+@@ -539,9 +539,9 @@ endif # $(dot-config)
+ all: vmlinux
  ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
- KBUILD_CFLAGS += -Os
+-KBUILD_CFLAGS += -Os
++KBUILD_CFLAGS += -Os -fno-caller-saves
  else
 -KBUILD_CFLAGS += -O2
-+KBUILD_CFLAGS += -O2 -fno-reorder-blocks -fno-tree-ch
++KBUILD_CFLAGS += -O2 -fno-reorder-blocks -fno-tree-ch -fno-caller-saves
  endif
  
  include $(srctree)/arch/$(SRCARCH)/Makefile