Index: linux-2.6.24.7/Makefile =================================================================== --- linux-2.6.24.7.orig/Makefile +++ linux-2.6.24.7/Makefile @@ -527,6 +527,9 @@ KBUILD_CFLAGS += $(call cc-optio 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,)