diff --git a/kernel/Makefile b/kernel/Makefile
index 108f5bee0111..ccbe2239751a 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -122,9 +122,21 @@ $(obj)/configs.o: $(obj)/config_data.h
 
 # config_data.h contains the same information as ikconfig.h but gzipped.
 # Info from config_data can be extracted from /proc/config*
+ifdef CONFIG_AMLOGIC_MODIFY
+# Amlogic: there are too many sentences marked by '#' in .config flies
+# So we need to remove them when generate config.gz, this can help to save
+# about 20KB memory in ro data
+$(obj)/cfg_less.txt: $(KCONFIG_CONFIG) FORCE
+	$(shell sed '/#/d' $(KCONFIG_CONFIG) > $(src)/cfg_less.txt)
+
+targets += config_data.gz
+$(obj)/config_data.gz: $(obj)/cfg_less.txt FORCE
+	$(call if_changed,gzip)
+else
 targets += config_data.gz
 $(obj)/config_data.gz: $(KCONFIG_CONFIG) FORCE
 	$(call if_changed,gzip)
+endif
 
       filechk_ikconfiggz = (echo "static const char kernel_config_data[] __used = MAGIC_START"; cat $< | scripts/basic/bin2c; echo "MAGIC_END;")
 targets += config_data.h