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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,)
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